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Marzocca AJ, Mansilla MA. Dynamic mechanical properties in natural rubber/styrene‐butadiene rubber blends: The local strain behavior in the glass transition region. POLYM ENG SCI 2023. [DOI: 10.1002/pen.26298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Affiliation(s)
- A. J. Marzocca
- Laboratorio de Polímeros y Materiales Compuestos, Departamento de Física Universidad de Buenos Aires, Ciudad Universitaria Buenos Aires Argentina
| | - M. A. Mansilla
- INTI, CONICET, Dirección Técnica de Materiales Avanzados San Martín Argentina
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2
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Yao P, Qiao W, Wang Y, Peng H, Xie X, Li Z. Deep-Red Emissive Squaraine-AIEgen in Elastomer Enabling High Contrast and Fast Thermoresponse for Anti-Counterfeiting and Temperature Sensing. Chemistry 2022; 28:e202200725. [PMID: 35294078 DOI: 10.1002/chem.202200725] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Indexed: 12/14/2022]
Abstract
Two challenges remain for organic thermoresponsive materials; one is to develop high-performance red-emissive thermoresponsive materials, while another is to simultaneously achieve high contrast ratio (CR), fast and reversible thermoresponse in a single element. Herein, we not only develop a new deep-red emissive squaraine-based AIEgen (TPE-SQ12) based on a pyrylium end group, which is suitable for fabricating high-performance thermoresponsive materials, but also show an effective approach to improve both CR (∼ten times increase) and response time (less than 3 seconds), that is, molecularly dispersing AIEgen into an elastomer, attributed to the significantly expanded free volume of elastomer upon increasing the temperature that can activate the AIEgen intramolecular movements more pronouncedly. Double encryption and temperature mapping systems have been separately established by using our designed elastomer/TPE-SQ12 film, showing the great potential for anti-counterfeiting and temperature sensing. Finally, white emission is further achieved by co-doping TPE-SQ12 with cyan dye into elastomer, which enables fluorescent thermochromism for improving the temperature mapping ability.
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Affiliation(s)
- Peigen Yao
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Weiguo Qiao
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Yixuan Wang
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Haiyan Peng
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.,National Anti-Counterfeit Engineering Research Center, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Xiaolin Xie
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.,National Anti-Counterfeit Engineering Research Center, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Zhong'an Li
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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Marzocca AJ, Rodríguez Garraza AL, Anbinder S, Macchi C, Somoza A. CHANGES IN THE MECHANICAL, MICRO-, AND NANO-STRUCTURAL PROPERTIES OF REINFORCED VULCANIZED NATURAL RUBBER COMPOUNDS: THEIR DEPENDENCE ON THE SiO2/CB RATIO. RUBBER CHEMISTRY AND TECHNOLOGY 2021. [DOI: 10.5254/rct.21.78991] [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
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Affiliation(s)
- Angel J. Marzocca
- Gerencia de Investigación y Desarrollo, Fate S.A.I.C.I., Av. Blanco Encalada 3003 (B1644GPK) Victoria, Buenos Aires, Argentina
- Laboratorio de Polímeros y Materiales Compuestos, Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
| | - Ana L. Rodríguez Garraza
- Gerencia de Investigación y Desarrollo, Fate S.A.I.C.I., Av. Blanco Encalada 3003 (B1644GPK) Victoria, Buenos Aires, Argentina
| | - Sebastián Anbinder
- Instituto de Física de Materiales Tandil–IFIMAT (UNCPBA) and CIFICEN (UNCPBA-CICPBA-CONICET), Pinto 399, (B7000GHG) Tandil, Argentina
| | - Carlos Macchi
- Instituto de Física de Materiales Tandil–IFIMAT (UNCPBA) and CIFICEN (UNCPBA-CICPBA-CONICET), Pinto 399, (B7000GHG) Tandil, Argentina
| | - Alberto Somoza
- Instituto de Física de Materiales Tandil–IFIMAT (UNCPBA) and CIFICEN (UNCPBA-CICPBA-CONICET), Pinto 399, (B7000GHG) Tandil, Argentina
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Luo Y, Chen X, Chen J, Wu Z, Ma H, Liu X, Xiang B, Ma X, Luo Z. A combined experimental and molecular dynamics simulation study of an intrinsic self-healing polyurethane elastomer based on a dynamic non-covalent mechanism. SOFT MATTER 2021; 17:2191-2204. [PMID: 33459746 DOI: 10.1039/d0sm02085k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An intrinsic self-healing polyurethane (PU) elastomer with excellent self-healing efficiency was prepared. The self-healing properties of this elastomer as well as the temperature dependence of self-healing can be tailored by regulating the molar ratio of hard to soft segments. The self-healing efficiency of 92.5% is the highest when the molar ratio of 4,4-methylenedicyclohexyl diisocyanate (HMDI) to polypropylene carbonate polyol (PPC) is 1.3 and the temperature is 25 °C. In situ temperature swing infrared spectra and low-field nuclear magnetic resonance reveal that the soft segment, PPC, endows PU with a dense dynamic hydrogen bond network, and the dissociation and reconstruction of the hydrogen bond network enable the PU to heal. To date, the exchange of hydrogen bonds has not been observed intuitively through experimental means. Therefore, the number, type, strength, lifetime, and the exchange of hydrogen bonds in the self-healing process at different temperatures were investigated by molecular dynamics (MD) simulation. The simulated results show that the type of hydrogen bond exchange between functional groups will be affected by temperature. The hydrogen bonds between urethane and urea groups play a leading role in the self-healing properties due to the high strength and a large number of hydrogen bonds at both 25 and 50 °C. The stronger strength, longer lifetime, and greater number of effective hydrogen bonds at 25 °C make the self-healing efficiency of PU higher than at 50 °C.
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Affiliation(s)
- Yanlong Luo
- College of Science, Nanjing Forestry University, Nanjing 210037, China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Xianling Chen
- College of Science, Nanjing Forestry University, Nanjing 210037, China.
| | - Jialiang Chen
- College of Science, Nanjing Forestry University, Nanjing 210037, China.
| | - Zhipeng Wu
- College of Science, Nanjing Forestry University, Nanjing 210037, China.
| | - Hongming Ma
- Highbery New Nano Materials Technology Co., Ltd, Changzhou 213100, China
| | - Xuejing Liu
- Highbery New Nano Materials Technology Co., Ltd, Changzhou 213100, China
| | - Bo Xiang
- College of Science, Nanjing Forestry University, Nanjing 210037, China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Xiaofeng Ma
- College of Science, Nanjing Forestry University, Nanjing 210037, China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Zhenyang Luo
- College of Science, Nanjing Forestry University, Nanjing 210037, China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, China
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Chen X, Zhu J, Luo Y, Chen J, Ma X, Bukhvalov D, Liu H, Zhang M, Luo Z. Molecular dynamics simulation insight into the temperature dependence and healing mechanism of an intrinsic self-healing polyurethane elastomer. Phys Chem Chem Phys 2020; 22:17620-17631. [PMID: 32720967 DOI: 10.1039/d0cp03013a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An intrinsic self-healing polyurethane (PU) elastomer was synthesized in our previous work. In this work, three-dimensional (3D) micro-crack models based on experimental samples were further introduced to investigate their self-healing behavior, mechanism, and temperature dependence by molecular dynamics (MD) simulations. In particular, the number, type, strength, and lifetime of hydrogen bonds as well as the microscopic behavior of molecular diffusion in the self-healing process were investigated. It was found that the self-healing capacity of PU mainly results from intermolecular electrostatic interactions, and the hydrogen bond plays a key role in electrostatic interactions. There is an optimum ratio of soft and hard segments at which the number of hydrogen bonds is appropriate and the self-healing capacity is optimum. Besides, the temperature has an optimal value at which the self-healing rate of PU is the fastest. The exchanges of hydrogen bonds, which endowed PU with self-healing capacity, were further revealed intuitively. We found that the exchanges of hydrogen bonds are reversible and more likely to occur on the urethane groups. This study deepened the understanding of the self-healing character of PU at the molecular level.
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Affiliation(s)
- Xianling Chen
- College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China.
| | - Jing Zhu
- Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst, Beijing 100084, P. R. China
| | - Yanlong Luo
- College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, P. R. China.
| | - Jun Chen
- College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China.
| | - Xiaofeng Ma
- College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, P. R. China.
| | - Danil Bukhvalov
- College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, P. R. China.
| | - Haobei Liu
- China Building Material Federation, Beijing 100037, P. R. China
| | - Meng Zhang
- Institute of Chemical Industry of Forestry Products, CAF, Nanjing, 210042, P. R. China.
| | - Zhenyang Luo
- College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, P. R. China.
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Bartoš J, Švajdlenková H, Šauša O. Molecular probe dynamics and free volume heterogeneities in n-propanol confined in a regular MCM-41 matrix by ESR and PALS. RSC Adv 2020; 10:2283-2294. [PMID: 35494603 PMCID: PMC9048748 DOI: 10.1039/c9ra09495d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 12/17/2019] [Indexed: 11/21/2022] Open
Abstract
A combined investigation of the spin probe TEMPO mobility and the free volume holes in n-propanol (n-PrOH) confined in a regular virgin MCM-41 matrix by means of ESR or PALS techniques, respectively, is reported. Dynamics of spin probe TEMPO alters at several characteristic ESR temperatures which are close to the characteristic PALS ones reflecting the changes in o-Ps annihilation and the related free volume. Correlations between these characteristic ESR and PALS temperatures indicate the common physical origins of the respective changes in the free volume expansion and the TEMPO mobility in the confined liquid n-PrOH. The significant difference in dynamic heterogeneity of TEMPO after confinement and free volume dispersion reflect the strongly altered structural-dynamic relationships in the confined n-PrOH medium with respect to the bulk situation.
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Affiliation(s)
- Josef Bartoš
- Polymer Institute of SAS Dúbravská Cesta 9 SK-845 41 Bratislava Slovakia
| | | | - Ondrej Šauša
- Institute of Physics of SAS Dúbravská Cesta 9 SK-845 11 Bratislava Slovakia
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Luo Y, Liu H, Xiang B, Chen X, Yang W, Luo Z. Temperature dependence of the interfacial bonding characteristics of silica/styrene butadiene rubber composites: a molecular dynamics simulation study. RSC Adv 2019; 9:40062-40071. [PMID: 35541406 PMCID: PMC9076183 DOI: 10.1039/c9ra08325a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 11/13/2019] [Indexed: 11/21/2022] Open
Abstract
Based on our previous studies on the modification of in-chain styrene butadiene rubber (SBR) using 3-mercaptopropionic acid as well as its composites filled with silica, we further constructed two types of models (amorphous and layered) to investigate the temperature dependence of the interfacial bonding characteristics of silica/SBR composites via molecular dynamics (MD) simulation. The competing effects of rubber–rubber interactions and filler–rubber interactions were identified, and the relationship between the competing effects and the temperature was determined. Besides this, the effect of temperature on the mobility and distribution of SBR chains on the surface of silica was investigated. It was found that the stronger the interfacial interactions, the less sensitive the motion of SBR chains to temperature. Finally, the number and length of hydrogen bonds as a function of temperature were analyzed. These simulated results deepened the understanding of interface temperature dependence of the silica/SBR composites and gave a molecular level explanation for the existence of an optimum modifier content (14.2 wt%) that is temperature independent. Temperature dependence of the interface between silica and styrene butadiene rubber modified by 3-mercaptopropionic acid was investigated by molecular dynamics simulation.![]()
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Affiliation(s)
- Yanlong Luo
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
- Institute of Polymer Materials
| | - Haobei Liu
- College of Materials Science and Engineering
- Nanjing Tech University
- Nanjing 21009
- China
| | - Bo Xiang
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
- Institute of Polymer Materials
| | - Xianling Chen
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Wei Yang
- State Key Laboratory of Advanced Power Transmission Technology
- State Grid Global Energy Interconnection Research Institute
- Beijing 102211
- China
| | - Zhenyang Luo
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
- Institute of Polymer Materials
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Švajdlenková H, Arrese-Igor S, Nógellová Z, Alegría A, Bartoš J. Molecular dynamic heterogeneity in relation to free volume and relaxation dynamics in organic glass-formers: oligomeric cis-1,4-poly(isoprene). Phys Chem Chem Phys 2018; 19:15215-15226. [PMID: 28561833 DOI: 10.1039/c7cp00446j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Herein, a combined study of the molecular rotation dynamics and free volume in cis-1,4-poly(isoprene) using two external probing techniques via ESR and PALS together with relaxation dynamics of the host medium via BDS is presented. The spectral evolution of the spin probe TEMPO from simulations over a wide range from 100 K up to 300 K exhibits three different regions of its correlation time consisting of a slow regime at low temperatures followed by the molecular dynamic heterogeneity zone from T = T = 155 K = 0.82 × T up to Tc ≅ 236 K = 1.26 × T and ending with a fast regime at high temperatures with the further characteristic ESR temperatures, T = 186 K ≅ T and T = 260 K. These are in close coincidence with four characteristic PALS temperatures: T = 160 K, T = 190 K, T = 227 K, and T = 263 K. Finally, using BDS, we revealed that the high-frequency features of the structural relaxation of 1,4-PIP 0.8k were related to the observed effects in the ESR and PALS response of the liquid state.
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Affiliation(s)
- H Švajdlenková
- Department of Structure and Physical Properties, Polymer Institute of SAS, Dúbravská cesta 9, SK-845 41 Bratislava, Slovakia.
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Bartoš J, Švajdlenková H, Šauša O, Lukešová M, Ehlers D, Michl M, Lunkenheimer P, Loidl A. Molecular probe dynamics and free volume in organic glass-formers and their relationships to structural relaxation: 1-propanol. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:015101. [PMID: 26613507 DOI: 10.1088/0953-8984/28/1/015101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A joint study of the rotational dynamics and free volume in amorphous 1-propanol (1-PrOH) as a prototypical monohydroxy alcohol by electron spin resonance (ESR) or positron annihilation lifetime spectroscopy (PALS), respectively, is reported. The dynamic parameters of the molecular spin probe 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) and the annihilation ones of the atomic ortho-positronium (o-Ps) probe as a function of temperature are compared. A number of coincidences between various effects in the ESR and PALS responses at the corresponding characteristic ESR and PALS temperatures were found suggesting a common origin of the underlying dynamic processes that were identified using viscosity (VISC) in terms of the two-order parameter (TOP) model and broadband dielectric spectroscopy (BDS) data.
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Affiliation(s)
- J Bartoš
- Department of Structure and physical properties, Polymer Institute of SAS, Dúbravská cesta 9, SK-845 41 Bratislava, Slovakia
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Švajdlenková H, Zgardzinska B, Lukešová M, Bartoš J. Spin probe dynamics in relation to free volume in crystalline organics from ESR and PALS: Cyclohexane. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2015.11.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mansilla M, Marzocca A, Macchi C, Somoza A. Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.05.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ahmadi M, Shojaei A. Reinforcing mechanisms of carbon nanotubes and high structure carbon black in natural rubber/styrene-butadiene rubber blend prepared by mechanical mixing − effect of bound rubber. POLYM INT 2015. [DOI: 10.1002/pi.4964] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Morteza Ahmadi
- Department of Chemical and Petroleum Engineering; Sharif University of Technology; PO Box 11155-9465 Tehran Iran
| | - Akbar Shojaei
- Department of Chemical and Petroleum Engineering; Sharif University of Technology; PO Box 11155-9465 Tehran Iran
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Švajdlenková H, Šauša O, Iskrová-Miklošovičová M, Majerník V, Krištiak J, Bartoš J. On the relationships between guest molecular dynamics and free volume in a series of small molecular and polymer glass-formers. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.05.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Bartoš J, Iskrová-Miklošovičová M, Cangialosi D, Alegría A, Šauša O, Švajdlenková H, Arbe A, Krištiak J, Colmenero J. Positron annihilation and relaxation dynamics from dielectric spectroscopy: poly(vinylmethylether). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2012; 24:155104. [PMID: 22436554 DOI: 10.1088/0953-8984/24/15/155104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report on the temperature dependence of the lifetime of the ortho-positronium (o-Ps), τ(3), annihilation in amorphous polymer poly(vinylmethylether) (PVME) from positron annihilation lifetime spectroscopy (PALS). We show that the behavior of τ(3)(T) can be divided into five regions, each of them having a linear temperature dependence, and that the crossover PALS temperatures situated at T(b1)(G), 0.76T(g)(PALS), T(b1)(L) = 1.14T(g)(PALS) and T(b2)(L) = 1.37T(G)(PALS), and marking the discontinuity in the free volume microstructure are related to various dynamic features from neutron scattering (NS) and broadband dielectric spectroscopy (BDS). First, a slight change in the PALS response in the glassy PVME at T(b1)(G) is related to the onset of the excess wing in an apparent correspondence with the fast secondary β motion from NS. A further slight bend in the liquid state at T(b1)(L) is related to a high-frequency tail of the primary α process as well as to the slow secondary β relaxation from BDS. In addition, it lies also in the vicinity of the crossover temperature, T(B)(βKWW), in the spectral dispersion of the primary α process, indicating a connection of the change in the o-Ps lifetime with the variation in the width of the primary α relaxation times distribution. Finally, the τ(3) value at T(b2)(L) is close to the mean relaxation time of the primary α process, τ(α), in coincidence with the crossover in the secondary effective β process between two regimes in the liquid PVME. All these relationships point to very close connections between the PALS response and the dynamic behavior of PVME, which can be explained in terms of the temperature dependence of the probability function of the liquid-like and the solid-like domains, as obtained from the two-order parameter (TOP) model description of the liquid to glass transition in glass-formers.
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Affiliation(s)
- J Bartoš
- Polymer Institute of SAS, Dúbravská cesta 9, SK-845 41 Bratislava, Slovak Republic.
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Mansilla MA, Silva L, Salgueiro W, Marzocca AJ, Somoza A. A study about the structure of vulcanized natural rubber/styrene butadiene rubber blends and the glass transition behavior. J Appl Polym Sci 2011. [DOI: 10.1002/app.36321] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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