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Guo L, Yang N, Gao W, Tao H, Cui B, Liu P, Zou F, Lu L, Fang Y, Wu Z. Self-healing properties of retrograded starch films with enzyme-treated waxy maize starch as healing agent. Carbohydr Polym 2023; 299:120238. [PMID: 36876769 DOI: 10.1016/j.carbpol.2022.120238] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/24/2022] [Accepted: 10/14/2022] [Indexed: 11/05/2022]
Abstract
Waxy maize starch (WMS) was modified using sequential α-amylase and transglucosidase to create enzyme-treated waxy maize starch (EWMS) with higher branching degree and lower viscosity as an ideal healing agent. Self-healing properties of retrograded starch films with microcapsules containing WMS (WMC) and EWMS (EWMC) were investigated. The results indicated that EWMS-16 had the maximum branching degree of 21.88 % after transglucosidase treatment time of 16 h, and A chain of 12.89 %, B1 chain of 60.76 %, B2 chain of 18.82 % and B3 chain of 7.52 %. The particle sizes of EWMC ranged from 2.754 to 5.754 μm. The embedding rate of EWMC was 50.08 %. Compared to retrograded starch films with WMC, water vapor transmission coefficients of retrograded starch films with EWMC were lower, while tensile strength and elongation at break values of retrograded starch films were almost similar. Retrograded starch films with EWMC had higher healing efficiency of 58.33 % as compared to that Retrograded starch films retrograded starch films with WMC was 44.65 %.
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Affiliation(s)
- Li Guo
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China.
| | - Na Yang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Wei Gao
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Haiteng Tao
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Bo Cui
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China.
| | - Pengfei Liu
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Feixue Zou
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Lu Lu
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Yishan Fang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Zhengzong Wu
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
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2
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Jacob S, Chen R, Nair S, Valentage J. BROMINATED ISOBUTYLENE-CO-PARAMETHYLSTYRENE WITH SUPERIOR IMPERMEABILITY FOR TIRE INNERLINER APPLICATIONS. RUBBER CHEMISTRY AND TECHNOLOGY 2021. [DOI: 10.5254/rct.21.80998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
ABSTRACT
Isobutylene elastomers are of great commercial importance in tire applications because of their notable low gas permeability properties, owing to their efficient molecular packing. Brominated isobutylene-co-para-methylstyrene (BIMSM) elastomers are a special class of isobutylene elastomers synthesized by random cationic polymerization of isobutylene and para-methylstyrene (pMS), followed by a selective bromination of the methyl group of the pMS units. BIMSM elastomer, commercially known as Exxpro™ specialty elastomer, exhibits superior heat resistance and aging properties and is much more resistant to chemicals and ozone than butyl- or halobutyl polymers because of its fully saturated backbone structure. The permeability properties of BIMSM elastomers can be tuned by the level of pMS comonomer present in the polymer chain. The pMS comonomer increases the glass transition temperature of the copolymer, and polymers with very low gas permeability needed for demanding tire air retention applications can be produced by suitably selecting the pMS content. A single type of benzylic bromide, but with a versatile functional group, allows for precise control of vulcanization chemistry, potential for other chemical transformations to achieve other reactive groups, and grafting reactions. We present the new material developments to meet the growing market demands and requirements for low maintenance, low inflation pressure loss rate tires and tires for connected autonomous shared electric vehicles.
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Affiliation(s)
- Sunny Jacob
- Global Polymers SE&B Product Technology, ExxonMobil Chemical, Houston, TX 77079
| | - Ray Chen
- Global Polymers SE&B Product Technology, ExxonMobil Chemical, Houston, TX 77079
| | - Sujith Nair
- Global SE&B Marketing, ExxonMobil Chemical, Houston, TX 77079
| | - Jeff Valentage
- Global SE&B Marketing, ExxonMobil Chemical, Houston, TX 77079
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3
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Guo L, Zhu Y, Li J, Gui Y, Tao H, Zou F, Liu P, Janaswamy S, Cui B. The effects of wheat amylose ratios on the structural and physicochemical properties of waxy rice starch using branching enzyme and glucoamylase. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106410] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4
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Wang J, Liu T, Bian X, Hua Z, Chen G, Wu X. Structural characterization and physicochemical properties of starch from four aquatic vegetable varieties in China. Int J Biol Macromol 2021; 172:542-549. [PMID: 33454327 DOI: 10.1016/j.ijbiomac.2021.01.078] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/23/2020] [Accepted: 01/12/2021] [Indexed: 12/19/2022]
Abstract
Nelumbo nucifera Gaertn., Eleocharis dulcis, Sagittaria sagittifolia L., and Trapa bispinosa Roxb. are common aquatic vegetables that are rich in starch. Starches from these four aquatic vegetables and their applications in edible films were studied to facilitate full use of starch resources. Significant differences in transparency, freeze-thaw stability, water solubility index, swelling power, water and oil absorption capacities, starch particle morphology, and rheology were observed among the starches from these four aquatic vegetables. All starches exhibited a typical "A" type diffraction pattern. N. nucifera, E. dulcis, and S. sagittifolia starches have similar thermal properties, while T. bispinosa starch has a higher gelatinization temperature. S. sagittifolia starch film has the highest transparency and lower WVP and water solubility. These results will promote the development of products based on starch obtained from aquatic vegetables.
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Affiliation(s)
- Jizhong Wang
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, PR China.
| | - Tingting Liu
- The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an 223002, Jiangsu, PR China
| | - Xuyun Bian
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, PR China
| | - Zhichao Hua
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, PR China
| | - Guodong Chen
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, PR China
| | - Xinxin Wu
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, PR China
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5
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The Impact of AN Contribution on the Thermal Characteristics and Molecular Dynamics of Novel Acrylonitrile-Styrene-Styrene Sodium Sulfonate Terpolymers. Polymers (Basel) 2021; 13:polym13030420. [PMID: 33525542 PMCID: PMC7865383 DOI: 10.3390/polym13030420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 01/25/2021] [Accepted: 01/25/2021] [Indexed: 12/04/2022] Open
Abstract
We performed a free radical solution polymerization of new acrylonitrile (AN), styrene (St) and styrene sodium sulfonate (SSS) acceptor–donor acceptor monomer systems. The compositions and structures of the produced terpolymers were elucidated using CHNS elemental analysis, and Fourier transform infrared (FTIR) spectroscopies. Three terpolymers candidates were chosen for detailed thermal investigations, where the AN molar ratio varied almost threefold (from ~6.9% to ~17.4%) while the molar ratios of St and SSS varied slightly, at average values around 76.0% and 12.9%, respectively. The glass transition (Tg) values of the terpolymers were measured calorimetrically. In addition, thermal gravimetric analyses (TGA) of the samples were conducted in the temperature range from room temperature to 800 °C. All terpolymers exhibited a single Tg value, indicating random copolymerization of the monomeric species. TGA results revealed that variation of the AN molar ratio had a significant influence on the thermal stabilities of the terpolymers. The impact of AN contribution on the molecular dynamics of the glass transition in the terpolymers was explained quantitatively in a framework of a molecular model.
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6
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Tanaka Y, Takabata T. Model Calculation for Enthalpy Relaxation of Polystyrene to Estimate the Size of Cooperative Rearranging Region for Glass Transition. CHEM LETT 2020. [DOI: 10.1246/cl.200063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yutaka Tanaka
- Department of Material Science and Biotechnologies, Faculty of Engineering, University of Fukui, Fukui 910-8507, Japan
| | - Takashi Takabata
- Department of Material Science and Biotechnologies, Faculty of Engineering, University of Fukui, Fukui 910-8507, Japan
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7
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Rheological and pasting characteristics of wheat starch modified with sequential triple enzymes. Carbohydr Polym 2020; 230:115667. [DOI: 10.1016/j.carbpol.2019.115667] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/22/2019] [Accepted: 11/24/2019] [Indexed: 12/26/2022]
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8
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Li H, Gui Y, Li J, Zhu Y, Cui B, Guo L. Modification of rice starch using a combination of autoclaving and triple enzyme treatment: Structural, physicochemical and digestibility properties. Int J Biol Macromol 2020; 144:500-508. [DOI: 10.1016/j.ijbiomac.2019.12.112] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 11/28/2019] [Accepted: 12/14/2019] [Indexed: 12/14/2022]
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9
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Copolymerization of Styrene and Pentadecylphenylmethacrylate (PDPMA): Synthesis, Characterization, Thermomechanical and Adhesion Properties. Polymers (Basel) 2020; 12:polym12010097. [PMID: 31947916 PMCID: PMC7023656 DOI: 10.3390/polym12010097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/20/2019] [Accepted: 12/22/2019] [Indexed: 11/16/2022] Open
Abstract
The copolymerization of styrene (St) with a bioderived monomer, pentadecylphenyl methacrylate (PDPMA), via atom transfer radical polymerization (ATRP) was studied in this work. The copolymerization reactivity ratio was calculated using the composition data obtained from 1H NMR spectroscopy, applying Kelen-Tudos and Finemann-Ross methods. The reactivity ratio of styrene (r1 = 0.93) and PDPMA (r2 = 0.05) suggested random copolymerization of the two monomers with alternation. The copolymerization conversion increased with increasing PDPMA concentration of the feed, upto 70 wt % PDPMA, but decreased thereafter. The molecular weight determined by gel permeation chromatography was lower than the theoretical values and the polydispersity increased from 1.32 to 2.19, with increasing PDPMA content in the feed. The influence of styrene content on the glass transition and thermal decomposition behavior of the copolymers was studied by differential scanning calorimetry (DSC) and thermogravimetric analysis, respectively. Morphological characterization by transmission electron microscopy (TEM) revealed a phase separated soft core-hard shell type structure. The complex viscosity and adhesion properties like peel strength and lap shear strength of the copolymer on different substrates increased with increasing styrene content.
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10
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Guo L, Deng Y, Lu L, Zou F, Cui B. Synergistic effects of branching enzyme and transglucosidase on the modification of potato starch granules. Int J Biol Macromol 2019; 130:499-507. [DOI: 10.1016/j.ijbiomac.2019.02.160] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 02/20/2019] [Accepted: 02/27/2019] [Indexed: 11/25/2022]
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11
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Li H, Cui B, Janaswamy S, Guo L. Structural and functional modifications of kudzu starch modified by branching enzyme. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2019. [DOI: 10.1080/10942912.2019.1619576] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Hui Li
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Shandong Academy of Sciences, Qilu University of Technology, Jinan, SD, China
| | - Bo Cui
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Shandong Academy of Sciences, Qilu University of Technology, Jinan, SD, China
| | - Srinivas Janaswamy
- Dairy and Food Science Department, South Dakota State University, Brookings, SD, USA
| | - Li Guo
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Shandong Academy of Sciences, Qilu University of Technology, Jinan, SD, China
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12
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Guo L, Li H, Lu L, Zou F, Tao H, Cui B. The Role of Sequential Enzyme Treatments on Structural and Physicochemical Properties of Cassava Starch Granules. STARCH-STARKE 2019. [DOI: 10.1002/star.201800258] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Li Guo
- State Key Laboratory of Biobased Material and Green PapermakingSchool of Food Sciences and EngineeringQilu University of TechnologyShandong Academy of SciencesJinan250353P. R. China
| | - Hui Li
- State Key Laboratory of Biobased Material and Green PapermakingSchool of Food Sciences and EngineeringQilu University of TechnologyShandong Academy of SciencesJinan250353P. R. China
| | - Lu Lu
- State Key Laboratory of Biobased Material and Green PapermakingSchool of Food Sciences and EngineeringQilu University of TechnologyShandong Academy of SciencesJinan250353P. R. China
| | - Feixue Zou
- State Key Laboratory of Biobased Material and Green PapermakingSchool of Food Sciences and EngineeringQilu University of TechnologyShandong Academy of SciencesJinan250353P. R. China
| | - Haiteng Tao
- State Key Laboratory of Biobased Material and Green PapermakingSchool of Food Sciences and EngineeringQilu University of TechnologyShandong Academy of SciencesJinan250353P. R. China
| | - Bo Cui
- State Key Laboratory of Biobased Material and Green PapermakingSchool of Food Sciences and EngineeringQilu University of TechnologyShandong Academy of SciencesJinan250353P. R. China
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13
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Guo L, Tao H, Cui B, Janaswamy S. The effects of sequential enzyme modifications on structural and physicochemical properties of sweet potato starch granules. Food Chem 2019; 277:504-514. [DOI: 10.1016/j.foodchem.2018.11.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 10/17/2018] [Accepted: 11/01/2018] [Indexed: 11/26/2022]
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14
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15
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Guo L. Role of entanglement concentration in dynamic viscoelasticity and film-forming property of cereal starches. Int J Biol Macromol 2018; 108:1357-1363. [DOI: 10.1016/j.ijbiomac.2017.11.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 10/26/2017] [Accepted: 11/09/2017] [Indexed: 10/18/2022]
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16
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Guo L, Cui B. The relationship between entanglement concentration and physicochemical properties of potato and sweet potato starch dispersions. Int J Food Sci Technol 2017. [DOI: 10.1111/ijfs.13590] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Li Guo
- School of Food Sciences and Engineering; Qilu University of Technology; No. 3501 Daxue Rd., Changqing District Jinan Shandong Province 250353 China
| | - Bo Cui
- School of Food Sciences and Engineering; Qilu University of Technology; No. 3501 Daxue Rd., Changqing District Jinan Shandong Province 250353 China
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17
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Casalini R, Zhu L, Baer E, Roland C. Segmental dynamics and the correlation length in nanoconfined PMMA. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.02.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Codou A, Moncel M, van Berkel JG, Guigo N, Sbirrazzuoli N. Glass transition dynamics and cooperativity length of poly(ethylene 2,5-furandicarboxylate) compared to poly(ethylene terephthalate). Phys Chem Chem Phys 2016; 18:16647-58. [DOI: 10.1039/c6cp01227b] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The glass transition of poly(ethylene 2,5-furandicarboxylate) (PEF), an emergent bio-based polyester, was investigated in comparison to one of its chemical analogues: poly(ethylene terephthalate) (PET).
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Affiliation(s)
- Amandine Codou
- Université Nice Sophia Antipolis
- CNRS
- Laboratoire de Physique de la Matière Condensée (LPMC)
- Nice
- France
| | - Matthieu Moncel
- Université Nice Sophia Antipolis
- CNRS
- Laboratoire de Physique de la Matière Condensée (LPMC)
- Nice
- France
| | - Jesper Gabriël van Berkel
- Université Nice Sophia Antipolis
- CNRS
- Laboratoire de Physique de la Matière Condensée (LPMC)
- Nice
- France
| | - Nathanaël Guigo
- Université Nice Sophia Antipolis
- CNRS
- Laboratoire de Physique de la Matière Condensée (LPMC)
- Nice
- France
| | - Nicolas Sbirrazzuoli
- Université Nice Sophia Antipolis
- CNRS
- Laboratoire de Physique de la Matière Condensée (LPMC)
- Nice
- France
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19
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Li S, Zhang X, Gu Z, Cao H, Ding X, Zheng K, Chen L, Tian X. Strain rate-regulated sub-Rouse transition in polystyrene via dynamic mechanical spectroscopy. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3732-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Lv Y, Lin Y, Chen F, Li F, Shangguan Y, Zheng Q. Chain entanglement and molecular dynamics of solution-cast PMMA/SMA blend films affected by hydrogen bonding between casting solvents and polymer chains. RSC Adv 2015. [DOI: 10.1039/c5ra06663h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effects of intermolecular interaction between casting solvents and polymer chains on molecular entanglement and dynamics in solution-cast PMMA/SMA films were probed by rheological, dielectric and modulated DSC methods.
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Affiliation(s)
- Yuhua Lv
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
| | - Yu Lin
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
| | - Feng Chen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
| | - Fang Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
| | - Yonggang Shangguan
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
| | - Qiang Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
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21
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Wu X, Liu CS, Ngai KL. Origin of the crossover in dynamics of the sub-Rouse modes at the same temperature as the structural α-relaxation in polymers. SOFT MATTER 2014; 10:9324-9333. [PMID: 25341184 DOI: 10.1039/c4sm01658k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The nature of the liquid-glass transition remains an unsolved fundamental problem. One aspect is the striking change in dynamics of the structural α-relaxation generally observed at a temperature T(B) above Tg in all glass-formers. More intriguing in the case of polymers is that the change of dynamics occurs not only in the structural α-relaxation but also in the sub-Rouse modes, i.e. chain modes in between the α-relaxation and the Rouse modes. However, the nature of the dynamic crossover of the sub-Rouse modes remains unclear. In this paper, the dynamics of a series of poly(n-alkyl methacrylates) with different molecular weights and microstructures studied by mechanical spectroscopy are reported. We demonstrate that the sub-Rouse modes exhibit a similar crossover of dynamics at the same T(B) as the α-relaxation. This property shared by the two viscoelastic mechanisms is remarkable. By invoking the results from the studies using positron annihilation spectroscopy and adiabatic calorimetry, we show that both viscoelastic mechanisms are coupled to density, correlated with the change of the configuration entropy, and are intermolecularly cooperative. The time scale of sub-Rouse modes at T(B) of the polymers studied is approximately independent of molecular weight and micro-structure of the polymers studied. The findings enhance the understanding of the sub-Rouse modes and their manifestation in the viscoelasticity of polymers in the glass-rubber transition region.
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Affiliation(s)
- Xuebang Wu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, P.O. Box 1129, Hefei, Anhui, People's Republic of China.
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22
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Zhang R, He X, Yu H, Chen K. Detecting the Rouse and Sub-Rouse Modes in Poly(Butyl Acrylate) and Poly(Ethyl Acrylate) Through Two-Dimensional Dynamic Mechanical Spectra. J MACROMOL SCI B 2014. [DOI: 10.1080/00222348.2014.951831] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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23
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He XR, Yu H, Zhang R, Yang CH. Enhance Slower Relaxation Process of Poly(ethyl acrylate) through Internal Plasticization. INT POLYM PROC 2014. [DOI: 10.3139/217.2882] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
In this paper, we report a chemical way to resolve longer motions units in the glass-rubber transition region of poly (ethyl acrylate) (PEA), so called internal plasticization. The ethyl acrylate (EA) monomers were copolymerized with little amount of isoprene (IP) monomers. We propose that the single bonds adjunct to double bonds would have better flexible activity than usual single bonds, so the motion units located between two adjunct double bonds would be enhanced. The dynamic mechanical spectra of internally plasticized PEA (IPPEA) and PEA show that the tan δ of IPPEA is asymmetric, while the tan δ of PEA is symmetric. Furthermore, the results of 2D-DMAS show that the LSM, SRM and RM of IPPEA are located at 7 °C, 12 °C and 36 °C. The shoulder peak of tan δ of IPPEA at higher temperature side was confirmed that it contains sub-rouse mode (SRM) and rouse mode (RM). Thus, internal plasticization is an effective way to resolve modes above Tg.
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Affiliation(s)
- X. R. He
- College of Materials Science and Engineering , State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu , PRC
| | - H. Yu
- College of Materials Science and Engineering , State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu , PRC
- Guangdong Vocational College of Posts and Telecom , Guangzhou , PRC
| | - R. Zhang
- College of Materials Science and Engineering , State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu , PRC
| | - C. H. Yang
- College of Materials Science and Engineering , State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu , PRC
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24
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Banc A, Genix AC, Chirat M, Dupas C, Caillol S, Sztucki M, Oberdisse J. Tuning Structure and Rheology of Silica–Latex Nanocomposites with the Molecular Weight of Matrix Chains: A Coupled SAXS–TEM–Simulation Approach. Macromolecules 2014. [DOI: 10.1021/ma500465n] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Amélie Banc
- Laboratoire
Charles Coulomb, UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire
Charles Coulomb, UMR 5221, CNRS, F-34 095, Montpellier, France
| | - Anne-Caroline Genix
- Laboratoire
Charles Coulomb, UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire
Charles Coulomb, UMR 5221, CNRS, F-34 095, Montpellier, France
| | - Mathieu Chirat
- Laboratoire
Charles Coulomb, UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire
Charles Coulomb, UMR 5221, CNRS, F-34 095, Montpellier, France
| | - Christelle Dupas
- Laboratoire
Charles Coulomb, UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire
Charles Coulomb, UMR 5221, CNRS, F-34 095, Montpellier, France
| | - Sylvain Caillol
- UMR
5253 CNRS-UM2-ENSCM-UM1, Equipe I.A.M., Institut Charles Gerhardt Montpellier, 8 rue de l’Ecole Normale, F-34 296 Montpellier Cedex 5, France
| | - Michael Sztucki
- European Synchrotron Radiation Facility, ESRF, 6 rue Jules Horowitz, BP 220, F-38
043, Grenoble, Cedex 9, France
| | - Julian Oberdisse
- Laboratoire
Charles Coulomb, UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire
Charles Coulomb, UMR 5221, CNRS, F-34 095, Montpellier, France
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25
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Zhang R, He X, Huang G. Dynamics of Poly (butyl acrylate) and Poly (ethyl acrylate) with internal double bonds. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0388-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Wu X, Wang H, Zhu Z, Liu CS. Quantifying Changes in the Low-Frequency Dynamics of Amorphous Polymers by 2D Correlation Mechanical Spectroscopy. J Phys Chem B 2012; 117:467-72. [DOI: 10.1021/jp311652h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xuebang Wu
- Key Laboratory of Materials Physics,
Institute of Solid
State Physics, Chinese Academy of Sciences, P.O. Box 1129, Hefei 230031, P. R. China
| | - Huaguang Wang
- Key Laboratory of Materials Physics,
Institute of Solid
State Physics, Chinese Academy of Sciences, P.O. Box 1129, Hefei 230031, P. R. China
| | - Zhengang Zhu
- Key Laboratory of Materials Physics,
Institute of Solid
State Physics, Chinese Academy of Sciences, P.O. Box 1129, Hefei 230031, P. R. China
| | - C. S. Liu
- Key Laboratory of Materials Physics,
Institute of Solid
State Physics, Chinese Academy of Sciences, P.O. Box 1129, Hefei 230031, P. R. China
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27
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Ngai KL, Prevosto D, Grassia L. Viscoelasticity of nanobubble-inflated ultrathin polymer films: Justification by the coupling model. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23201] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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28
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Li C, Liu J, Li J, Shen F, Huang Q, Xu H. Studies of 4,4′-diphenylmethane diisocyanate (MDI)/1,4-butanediol (BDO) based TPUs by in situ and moving-window two-dimensional correlation infrared spectroscopy: Understanding of multiple DSC endotherms from intermolecular interactions and motions level. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.09.030] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Wu J, Huang G, Wang X, He X, Xu B. Changes in the Viscoelastic Mechanisms of Polyisobutylene by Plasticization. Macromolecules 2012. [DOI: 10.1021/ma3001274] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jinrong Wu
- College of Polymer Science and
Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Guangsu Huang
- College of Polymer Science and
Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xiaoan Wang
- College of Polymer Science and
Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xiaojun He
- College of Polymer Science and
Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Ben Xu
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United
States
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30
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Thermal ageing behavior of styrene–butadiene random copolymer: A study on the ageing mechanism and relaxation properties. Polym Degrad Stab 2012. [DOI: 10.1016/j.polymdegradstab.2012.06.015] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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31
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Buchenau U. Bulk and shear relaxation in glasses and highly viscous liquids. J Chem Phys 2012; 136:224512. [DOI: 10.1063/1.4726459] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Wang X, He X, Huang G, Wu J. Correlations between alkyl side chain length and dynamic mechanical properties of poly(n-alkyl acrylates) and poly(n-alkyl methacrylates). POLYMER 2012. [DOI: 10.1016/j.polymer.2011.11.059] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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33
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Wu J, Huang G, Wang X, He X, Lei H. Molecular dynamics in chlorinated butyl rubber containing organophilic montmorillonite nanoparticles. JOURNAL OF POLYMER RESEARCH 2011. [DOI: 10.1007/s10965-011-9632-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Johari GP. Comment on “Heat capacity, enthalpy fluctuations, and configurational entropy in broken ergodic systems” [J. Chem. Phys. 133, 164503 (2010)]. J Chem Phys 2011; 134:147101; author reply 147102. [PMID: 21495772 DOI: 10.1063/1.3577842] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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35
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Wu X, Liu C, Zhu Z, Ngai KL, Wang LM. Nature of the Sub-Rouse Modes in the Glass−Rubber Transition Zone of Amorphous Polymers. Macromolecules 2011. [DOI: 10.1021/ma102897e] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xuebang Wu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, P.O. Box1129, Hefei, Anhui, People’s Republic of China
| | - Changsong Liu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, P.O. Box1129, Hefei, Anhui, People’s Republic of China
| | - Zhengang Zhu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, P.O. Box1129, Hefei, Anhui, People’s Republic of China
| | - K. L. Ngai
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei, 066004, People’s Republic of China
- CNR-IPCF Associate, Dipartimento di Fisica, Università di Pisa, Largo Bruno Pontecorvo 3, I-56127, Pisa, Italy
| | - Li-Min Wang
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei, 066004, People’s Republic of China
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36
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Wang X, Huang G, Wu J, Nie Y, He X. Using Two-Dimensional Correlation Dynamic Mechanical Spectroscopy to Detect Different Modes of Molecular Motions in the Glass−Rubber Transition Region in Polyisobutylene. J Phys Chem B 2011; 115:1775-9. [DOI: 10.1021/jp110890n] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaoan Wang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China
| | - Guangsu Huang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China
| | - Jinrong Wu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China
| | - Yijing Nie
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China
| | - Xiaojun He
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China
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37
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Hamieh T. Determination of the transition phenomena of poly(α-n-alkyl) methacrylates adsorbed on silica by inverse gas chromatography (IGC). JOURNAL OF POLYMER RESEARCH 2010. [DOI: 10.1007/s10965-010-9519-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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38
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Neumann MG, Schmitt CC, Goi BE. Thioxanthone sensitized photodegradation of poly(alkyl methacrylate) films. J Appl Polym Sci 2010. [DOI: 10.1002/app.30758] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Russina O, Beiner M, Pappas C, Russina M, Arrighi V, Unruh T, Mullan CL, Hardacre C, Triolo A. Temperature Dependence of the Primary Relaxation in 1-Hexyl-3-methylimidazolium bis{(trifluoromethyl)sulfonyl}imide. J Phys Chem B 2009; 113:8469-74. [DOI: 10.1021/jp900142m] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Olga Russina
- Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Salita Sperone, C. da Papardo, 98158 Faro Superiore, Messina, Italy, Department of Physics, Martin-Luther-University Halle-Wittenberg, D-06099 Halle, Germany, Helmholtz Zentrum Berlin für Materialen und Energien, SF1-BENSC, Glienicker Str. 100, D-14109 Berlin, Germany, School of Engineering and Physical Sciences, Chemistry, Heriot-Watt University, EH14 4AS Edinburgh, U.K., Technische Universitaet Muenchen,
| | - Mario Beiner
- Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Salita Sperone, C. da Papardo, 98158 Faro Superiore, Messina, Italy, Department of Physics, Martin-Luther-University Halle-Wittenberg, D-06099 Halle, Germany, Helmholtz Zentrum Berlin für Materialen und Energien, SF1-BENSC, Glienicker Str. 100, D-14109 Berlin, Germany, School of Engineering and Physical Sciences, Chemistry, Heriot-Watt University, EH14 4AS Edinburgh, U.K., Technische Universitaet Muenchen,
| | - Catherine Pappas
- Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Salita Sperone, C. da Papardo, 98158 Faro Superiore, Messina, Italy, Department of Physics, Martin-Luther-University Halle-Wittenberg, D-06099 Halle, Germany, Helmholtz Zentrum Berlin für Materialen und Energien, SF1-BENSC, Glienicker Str. 100, D-14109 Berlin, Germany, School of Engineering and Physical Sciences, Chemistry, Heriot-Watt University, EH14 4AS Edinburgh, U.K., Technische Universitaet Muenchen,
| | - Margarita Russina
- Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Salita Sperone, C. da Papardo, 98158 Faro Superiore, Messina, Italy, Department of Physics, Martin-Luther-University Halle-Wittenberg, D-06099 Halle, Germany, Helmholtz Zentrum Berlin für Materialen und Energien, SF1-BENSC, Glienicker Str. 100, D-14109 Berlin, Germany, School of Engineering and Physical Sciences, Chemistry, Heriot-Watt University, EH14 4AS Edinburgh, U.K., Technische Universitaet Muenchen,
| | - Valeria Arrighi
- Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Salita Sperone, C. da Papardo, 98158 Faro Superiore, Messina, Italy, Department of Physics, Martin-Luther-University Halle-Wittenberg, D-06099 Halle, Germany, Helmholtz Zentrum Berlin für Materialen und Energien, SF1-BENSC, Glienicker Str. 100, D-14109 Berlin, Germany, School of Engineering and Physical Sciences, Chemistry, Heriot-Watt University, EH14 4AS Edinburgh, U.K., Technische Universitaet Muenchen,
| | - Tobias Unruh
- Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Salita Sperone, C. da Papardo, 98158 Faro Superiore, Messina, Italy, Department of Physics, Martin-Luther-University Halle-Wittenberg, D-06099 Halle, Germany, Helmholtz Zentrum Berlin für Materialen und Energien, SF1-BENSC, Glienicker Str. 100, D-14109 Berlin, Germany, School of Engineering and Physical Sciences, Chemistry, Heriot-Watt University, EH14 4AS Edinburgh, U.K., Technische Universitaet Muenchen,
| | - Claire L. Mullan
- Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Salita Sperone, C. da Papardo, 98158 Faro Superiore, Messina, Italy, Department of Physics, Martin-Luther-University Halle-Wittenberg, D-06099 Halle, Germany, Helmholtz Zentrum Berlin für Materialen und Energien, SF1-BENSC, Glienicker Str. 100, D-14109 Berlin, Germany, School of Engineering and Physical Sciences, Chemistry, Heriot-Watt University, EH14 4AS Edinburgh, U.K., Technische Universitaet Muenchen,
| | - Christopher Hardacre
- Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Salita Sperone, C. da Papardo, 98158 Faro Superiore, Messina, Italy, Department of Physics, Martin-Luther-University Halle-Wittenberg, D-06099 Halle, Germany, Helmholtz Zentrum Berlin für Materialen und Energien, SF1-BENSC, Glienicker Str. 100, D-14109 Berlin, Germany, School of Engineering and Physical Sciences, Chemistry, Heriot-Watt University, EH14 4AS Edinburgh, U.K., Technische Universitaet Muenchen,
| | - Alessandro Triolo
- Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Salita Sperone, C. da Papardo, 98158 Faro Superiore, Messina, Italy, Department of Physics, Martin-Luther-University Halle-Wittenberg, D-06099 Halle, Germany, Helmholtz Zentrum Berlin für Materialen und Energien, SF1-BENSC, Glienicker Str. 100, D-14109 Berlin, Germany, School of Engineering and Physical Sciences, Chemistry, Heriot-Watt University, EH14 4AS Edinburgh, U.K., Technische Universitaet Muenchen,
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40
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Serrano E, Kortaberria G, Arruti P, Tercjak A, Mondragon I. Molecular dynamics of an epoxy resin modified with an epoxidized poly(styrene–butadiene) linear block copolymer during cure and microphase separation processes. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2008.12.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Tonpheng B, Andersson O. Crosslinking, thermal properties and relaxation behaviour of polyisoprene under high-pressure. Eur Polym J 2008. [DOI: 10.1016/j.eurpolymj.2008.07.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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42
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Carretero-González J, Retsos H, Verdejo R, Toki S, Hsiao BS, Giannelis EP, López-Manchado MA. Effect of Nanoclay on Natural Rubber Microstructure. Macromolecules 2008. [DOI: 10.1021/ma800893x] [Citation(s) in RCA: 136] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Javier Carretero-González
- Institute of Polymer Science and Technology, CSIC, Madrid 28006, Spain; Department of Material Science and Engineering, Cornell University, Ithaca, New York 14853; and Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400
| | - Haris Retsos
- Institute of Polymer Science and Technology, CSIC, Madrid 28006, Spain; Department of Material Science and Engineering, Cornell University, Ithaca, New York 14853; and Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400
| | - Raquel Verdejo
- Institute of Polymer Science and Technology, CSIC, Madrid 28006, Spain; Department of Material Science and Engineering, Cornell University, Ithaca, New York 14853; and Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400
| | - Shigeyuki Toki
- Institute of Polymer Science and Technology, CSIC, Madrid 28006, Spain; Department of Material Science and Engineering, Cornell University, Ithaca, New York 14853; and Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400
| | - Benjamin S. Hsiao
- Institute of Polymer Science and Technology, CSIC, Madrid 28006, Spain; Department of Material Science and Engineering, Cornell University, Ithaca, New York 14853; and Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400
| | - Emmanuel P. Giannelis
- Institute of Polymer Science and Technology, CSIC, Madrid 28006, Spain; Department of Material Science and Engineering, Cornell University, Ithaca, New York 14853; and Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400
| | - Miguel A. López-Manchado
- Institute of Polymer Science and Technology, CSIC, Madrid 28006, Spain; Department of Material Science and Engineering, Cornell University, Ithaca, New York 14853; and Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400
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43
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Wu J, Huang G, Pan Q, Zheng J, Zhu Y, Wang B. An investigation on the molecular mobility through the glass transition of chlorinated butyl rubber. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.11.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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44
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Zhu Y, Zhou W, Wang J, Wang B, Wu J, Huang G. Study on Damping Mechanism Based on the Free Volume for CIIR by PALS. J Phys Chem B 2007; 111:11388-92. [PMID: 17850129 DOI: 10.1021/jp071670v] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The influences of the free volume and the termperature on the damping property of chlorinated isoprene-isobutylene rubber (CIIR) were first investigated by positron annihilation lifetime spectroscopy (PALS), dynamic mechanical analysis (DMA), and differential scanning calorimetry (DSC), respectively. From the variations of ortho-positronium (o-Ps) lifetimes as a function of temperature, two transition temperatures can be observed, i.e., Tg and TB. We found that there exists a pre-rubbery state between the glass transition temperature Tg and TB. The DMA results indicate that the tan delta peak of CIIR has a very broad temperature distribution because of the existence of a liquid-liquid transition (Tll). The temperature dependence of the average free volume size can be linearly fitted below Tg and above TB, respectively. It is very interesting that the difference spectrum of the free volume size between the results fitted by two lines (below Tg and above TB) and experimental data is very similar to the dynamic mechanical spectrum of CIIR. In order to clarify the damping mechanics, the Williams-Landel-Ferry (WLF) equation based on free volume theory has been successfully used to establish a direct quantificational relationship between the free volume and the damping property, which indicates that the free volume plays an important role in determining the damping property.
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Affiliation(s)
- Yuchan Zhu
- Department of Physics, Wuhan University, Wuhan, 430072, China
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45
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Fijten MWM, Kranenburg JM, Thijs HML, Paulus RM, van Lankvelt BM, de Hullu J, Springintveld M, Thielen DJG, Tweedie CA, Hoogenboom R, Van Vliet KJ, Schubert US. Synthesis and Structure−Property Relationships of Random and Block Copolymers: A Direct Comparison for Copoly(2-oxazoline)s. Macromolecules 2007. [DOI: 10.1021/ma070720r] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Martin W. M. Fijten
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Johannes M. Kranenburg
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Hanneke M. L. Thijs
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Renzo M. Paulus
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Bart M. van Lankvelt
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Jos de Hullu
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Menno Springintveld
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Davin J. G. Thielen
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Catherine A. Tweedie
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Richard Hoogenboom
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Krystyn J. Van Vliet
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Ulrich S. Schubert
- Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Laboratory for Material Chemomechanics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts; and Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, 07743 Jena, Germany
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46
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Kilburn D, Wawryszczuk J, Dlubek G, Pionteck J, Häßler R, Alam MA. Temperature and Pressure Dependence of the Free Volume in Polyisobutylene from Positron Lifetime and Pressure-Volume-Temperature Experiments. MACROMOL CHEM PHYS 2006. [DOI: 10.1002/macp.200600013] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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47
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Mohammady SZ, Elkholy SS, Elsabee MZ. Investigation of the relaxation behavior of novel terpolymers of acrylonitrile, methyl methacylate and indene. POLYM INT 2006. [DOI: 10.1002/pi.2100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Jakobsen B, Niss K, Olsen NB. Dielectric and shear mechanical alpha and beta relaxations in seven glass-forming liquids. J Chem Phys 2005; 123:234511. [PMID: 16392935 DOI: 10.1063/1.2136887] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present shear mechanical and dielectric measurements taken on seven liquids: triphenylethylene, tetramethyltetra-phenyltrisiloxane (Dow Corning 704 diffusion pump fluid), polyphenyl ether (Santovac 5 vacuum pump fluid), perhydrosqualene, polybutadiene, decahydroisoquinoline (DHIQ), and tripropylene glycol. The shear mechanical and dielectric measurements are for each liquid performed under identical thermal conditions close to the glass transition temperature. The liquids span four orders of magnitude in dielectric relaxation strength and include liquids with and without Johari-Goldstein beta relaxation. The shear mechanical data are obtained by the piezoelectric shear modulus gauge method giving a large frequency span (10(-3)-10(4.5) Hz). This allows us to resolve the shear mechanical Johari-Goldstein beta peak in the equilibrium DHIQ liquid. We moreover report a signature (a pronounced rise in the shear mechanical loss at frequencies above the alpha relaxation) of a Johari-Goldstein beta relaxation in the shear mechanical spectra for all the liquids which show a beta relaxation in the dielectric spectrum. It is found that both the alpha and beta loss peaks are shifted to higher frequencies in the shear mechanical spectrum compared to the dielectric spectrum. It is in both the shear and dielectric responses found that liquids obeying time-temperature superposition also have a high-frequency power law with exponent close to -12. It is moreover seen that the less temperature dependent the spectral shape is, the closer it is to the universal -12 power-law behavior. The deviation from this universal power-law behavior and the temperature dependencies of the spectral shape are rationalized as coming from interactions between the alpha and beta relaxations.
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Affiliation(s)
- Bo Jakobsen
- Department of Mathematics and Physics (IMFUFA), Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark.
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Niss K, Jakobsen B, Olsen NB. Dielectric and shear mechanical relaxations in glass-forming liquids: A test of the Gemant-DiMarzio-Bishop model. J Chem Phys 2005; 123:234510. [PMID: 16392934 DOI: 10.1063/1.2136886] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The Gemant-DiMarzio-Bishop model, which connects the frequency-dependent shear modulus to the frequency-dependent dielectric constant, is reviewed and a new consistent macroscopic formulation is derived. It is moreover shown that this version of the model can be tested without fitting parameters. The reformulated version of the model is analyzed and experimentally tested. It is demonstrated that the model has several nontrivial qualitative predictions: the existence of an elastic contribution to the high-frequency limit of the dielectric constant, a shift of the shear modulus loss peak frequency to higher frequencies compared with the loss peak frequency of the dielectric constant, a broader alpha peak, and a more pronounced beta peak in the shear modulus when compared with the dielectric constant. It is shown that these predictions generally agree with experimental findings and it is therefore suggested that the Gemant-DiMarzio-Bishop model is correct on a qualitative level. The quantitative agreement between the model and the data is on the other hand moderate to poor. It is discussed if a model-free comparison between the dielectric and shear mechanical relaxations is relevant, and it is concluded that the shear modulus should be compared with the rotational dielectric modulus, 1(epsilon(omega)-n2), which is extracted from the Gemant-DiMarzio-Bishop model, rather than to the dielectric susceptibility or the conventional dielectric modulus M=1epsilon(omega).
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Affiliation(s)
- Kristine Niss
- Department of Mathematics and Physics (IMFUFA), Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark.
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Bassi M, Tonelli C, Di Meo A. Glass Transition Behavior of a Microphase Segregated Polyurethane Based on PFPE and IPDI. A Calorimetric Study. Macromolecules 2003. [DOI: 10.1021/ma034674g] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mattia Bassi
- Solvay-Solexis R&D Center, Viale Lombardia 20, I-20021 Bollate, MI, Italy
| | - Claudio Tonelli
- Solvay-Solexis R&D Center, Viale Lombardia 20, I-20021 Bollate, MI, Italy
| | - Antonella Di Meo
- Solvay-Solexis R&D Center, Viale Lombardia 20, I-20021 Bollate, MI, Italy
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