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Gopinath S, Adarsh NN, Nair PR, Mathew S. Carbon nanofiber-reinforced shape memory polyurethanes based on HTPB/PTMG blend as anticorrosive coatings. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2022.2129386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Sithara Gopinath
- Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University, Kottayam, India
| | | | - P. Radhakrishnan Nair
- Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University, Kottayam, India
| | - Suresh Mathew
- Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University, Kottayam, India
- School of Chemical Sciences, Mahatma Gandhi University, Kottayam, India
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Soykan U, Khaleel M, Cetin S, Yahsi U, Tav C. Investigation of the relation between free volume and physico-mechanical performance in rigid polyurethane foam containing turkey feather fibers: Part 2. J CELL PLAST 2022. [DOI: 10.1177/0021955x221144541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Rigid polyurethane foams (RPUFs) were modified with 0–15 wt.% turkey feather fibers (TFFs) produced from waste turkey feathers. One-shut free rising method was used for the production of TFFs-filled-RPUFs in a closed mold. The dependence of mechanical performance and water vapor permeability (WVP) feature of the final foams on TFFs loading was evaluated with free volume change. The free volume analysis was performed via Positron Annihilation Lifetime Spectroscopy (PALS), while the mechanical and WVP characteristics were determined with the use of the universal tester machines. PALS findings showed that the incorporation of TFFs with RPUF matrix caused the considerable diminishment in the free volume due to TFFs serving as a filling material and formation of strong secondary bonds between components. Moreover, tensile strength and extension of the foams decreased with the increasing of TFFs, which caused by the occurrence of noteworthy restriction on the spatial alignment and orientation capability of polyurethane chains due to the lack of sufficient free volume allowing the chains to move freely. As for the compression tests, all the TFFs-loaded RPUFs depicted substantially lower performance due to TFFs interfering with the ordered organization of isocyanate domains. Moreover, impact test results showed that the addition of TFFs into RPUF matrix brought about the insufficient impact energy delocalization throughout the matrix due to the restriction on the mobility of polymer chains. Additionally, the remarkable diminishment in WVP was recorded due to the reduction in the number of vacancies and constitution of keratin composed of roundly 60% of hydrophilic protein (especially cystine). All in all, this study established a strong links between free volume and characteristics of TFFs-loaded RPUFs.
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Affiliation(s)
- Ugur Soykan
- Yenicaga Yasar Celik Vocational School, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Mustafa Khaleel
- Departmant of Chemistry, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Sedat Cetin
- Departmant of Chemistry, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Ugur Yahsi
- Deparmant of Physics, Marmara University, Istanbul, Turkey
| | - Cumali Tav
- Deparmant of Physics, Marmara University, Istanbul, Turkey
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3
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Toczek K, Lipińska M, Pietrasik J. Smart TPE Materials Based on Recycled Rubber Shred. Materials (Basel) 2021; 14:ma14216237. [PMID: 34771764 PMCID: PMC8584332 DOI: 10.3390/ma14216237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/11/2021] [Accepted: 10/13/2021] [Indexed: 12/04/2022]
Abstract
Thermo-responsive shape memory materials were developed based on recycled ethylene-propylene-diene (EPDM) rubber shred and thermoplastic elastomers (TPE). Ethylene-1-octene TPEs (Engage 8180, 8411, 8452) with varying degrees of crystallinity and Mooney viscosity were used to prepare the composite materials. To avoid the deterioration of static mechanical properties after mixing recycled EPDM rubber shred (RS) with thermoplastic elastomers, they were partially cured using dicumyl peroxide. The peroxide curing was the most effective for a rubber shred/Engage 8180 blend, where the highest cure rate index (CRI), 1.88 dNm⋅min−1, was observed. The curing caused an approximately 4-fold increase of tensile strength (TS) values for EPDM rubber shred/thermoplastic elastomer blend to the level acceptable for the rubber industry compared with an uncured blend. The incorporation of EPDM rubber shred changed thermoplastic elastomers’ viscoelastic behavior, increasing the values of storage (G′) and loss (G″) modulus. The lowest viscosity of molten Engage 8411 during mixing led to higher compatibility of rubber shred RS/8411 blend, as confirmed by analysis of Cole-Cole plots and the blend morphology. All rubber shred RS/TPE blends showed the shape memory behavior. For the RS/Engage 8452 blend, the highest shape fixity (F) value (94%) was observed, while the shape recovery (RR) was 87%. Studies confirmed that the intelligent materials with shape memory effect could be obtained via selectively chosen thermoplastic elastomers; ethylene-1-octene as a binder for recycled EPDM. Prepared recycled TPE/rubber shred blends can be successfully reused due to their viscoelastic and mechanical properties. Therefore, such a concept can be potentially interesting for the rubber industry.
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Affiliation(s)
- Subrata Mondal
- Department of Mechanical Engineering, National Institute of Technical Teachers’ Training and Research (NITTTR) Kolkata, Kolkata, India
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Wittchen S, Kahl H, Waltschew D, Shahzad I, Beiner M, Cepus V. Diffusion coefficients of polyurethane coatings by swelling experiments using dielectric spectroscopy. J Appl Polym Sci 2020. [DOI: 10.1002/app.49174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sergei Wittchen
- Department of Engineering and Natural Science Hochschule Merseburg – University of Applied Sciences Merseburg Merseburg Germany
- Polymer Application Business Unit, Fraunhofer Institute for Microstructure of Materials and Systems IMWS Halle (Saale) Germany
- Faculty of Natural Sciences II, Martin Luther University Halle‐Wittenberg Halle (Saale) Germany
| | - Heike Kahl
- Department of Engineering and Natural Science Hochschule Merseburg – University of Applied Sciences Merseburg Merseburg Germany
| | - David Waltschew
- Department of Engineering and Natural Science Hochschule Merseburg – University of Applied Sciences Merseburg Merseburg Germany
| | - Irfan Shahzad
- Department of Engineering and Natural Science Hochschule Merseburg – University of Applied Sciences Merseburg Merseburg Germany
- Faculty of Natural Sciences II, Martin Luther University Halle‐Wittenberg Halle (Saale) Germany
| | - Mario Beiner
- Polymer Application Business Unit, Fraunhofer Institute for Microstructure of Materials and Systems IMWS Halle (Saale) Germany
- Faculty of Natural Sciences II, Martin Luther University Halle‐Wittenberg Halle (Saale) Germany
| | - Valentin Cepus
- Department of Engineering and Natural Science Hochschule Merseburg – University of Applied Sciences Merseburg Merseburg Germany
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Rukmanikrishnan B, Kim SS, Lee J. Flexible and compatible polymer composite blends based on polyurethane/sodium ionomer/lignin and their properties. J Appl Polym Sci 2020. [DOI: 10.1002/app.48885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Sam Soo Kim
- Department of Fiber System EngineeringYeungnam University Gyeongsan South Korea
| | - Jaewoong Lee
- Department of Fiber System EngineeringYeungnam University Gyeongsan South Korea
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Guo X, Lyu B, Gao D, Cheng K, Ma J, Yang N, Yu Y, Zhao S, Shi L, Kou M. Water vapor permeability and self‐cleaning properties of solvent‐free polyurethane improved by hollow nano‐TiO
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spheres. J Appl Polym Sci 2020. [DOI: 10.1002/app.49638] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xu Guo
- College of Bioresources Chemical and Materials Engineering Shaannxi University of Science and Technology Xi'an China
- National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science and Technology) Xi'an China
| | - Bin Lyu
- College of Bioresources Chemical and Materials Engineering Shaannxi University of Science and Technology Xi'an China
- National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science and Technology) Xi'an China
| | - Dangge Gao
- College of Bioresources Chemical and Materials Engineering Shaannxi University of Science and Technology Xi'an China
- National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science and Technology) Xi'an China
| | - Kun Cheng
- College of Bioresources Chemical and Materials Engineering Shaannxi University of Science and Technology Xi'an China
- National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science and Technology) Xi'an China
| | - Jianzhong Ma
- College of Bioresources Chemical and Materials Engineering Shaannxi University of Science and Technology Xi'an China
- National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science and Technology) Xi'an China
| | - Na Yang
- College of Bioresources Chemical and Materials Engineering Shaannxi University of Science and Technology Xi'an China
- National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science and Technology) Xi'an China
| | - Yajin Yu
- College of Bioresources Chemical and Materials Engineering Shaannxi University of Science and Technology Xi'an China
- National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science and Technology) Xi'an China
| | | | - Lei Shi
- Zhejiang Hexin Holdings Ltd. Zhejiang China
| | - Mengnan Kou
- College of Bioresources Chemical and Materials Engineering Shaannxi University of Science and Technology Xi'an China
- National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science and Technology) Xi'an China
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Li Y, Zhang ZP, Mo WJ, Rong MZ, Zhang MQ, Liu D. Photo-induced topological self-reorganization and self-growth of polymer based on dynamic reversible aromatic pinacol units. POLYMER 2020; 192:122299. [DOI: 10.1016/j.polymer.2020.122299] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
Lithium-ion batteries have had a tremendous impact on several sectors of our society; however, the intrinsic limitations of Li-ion chemistry limits their ability to meet the increasing demands of developing more advanced portable electronics, electric vehicles, and grid-scale energy storage systems. Therefore, battery chemistries beyond Li ions are being intensively investigated and need urgent breakthroughs toward commercial applications, wherein the use of metallic Li is one of the most intuitive choices. Despite several decades of oblivion due to safety concerns regarding the growth of Li dendrites, Li-metal anodes are now poised to be revived because of the advances in investigative tools and globally invested efforts. In this review, we first summarize the existing issues with regard to Li anodes and their underlying reasons and then highlight the recent progress made in the development of high-performance Li anodes. Finally, we propose the persisting challenges and opportunities toward the exploration of practical Li-metal anodes.
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Affiliation(s)
- Xin Zhang
- School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Renewable Energy Conversion and Storage Center (ReCast), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300350, China. and Institute of Molecular Plus, Tianjin University, No. 92 Weijin Road, Tianjin 300072, China.
| | - Yongan Yang
- Institute of Molecular Plus, Tianjin University, No. 92 Weijin Road, Tianjin 300072, China.
| | - Zhen Zhou
- School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Renewable Energy Conversion and Storage Center (ReCast), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300350, China. and Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education, School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
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Davletbaeva IM, Dulmaev SE, Sazonov OO, Klinov AV, Davletbaev RS, Gumerov AM. Water vapor permeable polyurethane films based on the hyperbranched aminoethers of boric acid. RSC Adv 2019; 9:23535-23544. [PMID: 35530579 PMCID: PMC9069329 DOI: 10.1039/c9ra05314j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 07/25/2019] [Indexed: 11/29/2022] Open
Abstract
The hyperbranched polymers have drawn intensive attention in the design of macromolecules and functional materials because of their unique physical and chemical properties resulting from the branched architecture and the high number of functional groups. In the present study, by means of light scattering, viscosimetry, thermomechanical analysis, tensile stress–strain, mechanical loss tangent and water vapor permeability measurements, we demonstrate the hierarchical macromolecular organization of organoboron polyurethanes synthesized using sterically hindered amino ethers (AEBA) of boric acid. It is shown that the water vapor permeability of polyurethanes obtained on the basis of sterically hindered aminoethers of boric acid is due to the peculiarities of the chemical structure of AEBA, which can exhibit an ionomeric nature and the presence of steric hindrances created in the hyperbranched structure of AEBA, which can lead to an increase in free volume in such polyurethanes. It is shown that the water vapor permeability of polyurethanes obtained on the basis of sterically hindered aminoethers of boric acid is due to the peculiarities of the chemical structure of AEBA.![]()
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Affiliation(s)
- I M Davletbaeva
- Kazan National Research Technological University 68 Karl Marx Str. Kazan Republic of Tatarstan 420015 Russian Federation
| | - S E Dulmaev
- Kazan National Research Technological University 68 Karl Marx Str. Kazan Republic of Tatarstan 420015 Russian Federation
| | - O O Sazonov
- Kazan National Research Technological University 68 Karl Marx Str. Kazan Republic of Tatarstan 420015 Russian Federation
| | - A V Klinov
- Kazan National Research Technological University 68 Karl Marx Str. Kazan Republic of Tatarstan 420015 Russian Federation
| | - R S Davletbaev
- Kazan National Research Technical University named after A.N.Tupolev - KAI 10 Karl Marx Str. Kazan Republic of Tatarstan 420111 Russian Federation
| | - A M Gumerov
- Kazan National Research Technological University 68 Karl Marx Str. Kazan Republic of Tatarstan 420015 Russian Federation
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Puentes‐Parodi A, Santoro LA, Ferreira I, Leuteritz A, Kuehnert I. Influence of annealing on the permeation properties of a thermoplastic elastomer. POLYM ENG SCI 2019. [DOI: 10.1002/pen.25181] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Leandro A. Santoro
- Leibniz‐Institut fuer Polymerforschung Dresden e. V., Department Processing Dresden Germany
- Technische Universität Dresden Dresden Germany
| | - Ignatius Ferreira
- Leibniz‐Institut fuer Polymerforschung Dresden e. V., Department Processing Dresden Germany
| | - Andreas Leuteritz
- Leibniz‐Institut fuer Polymerforschung Dresden e. V., Department Processing Dresden Germany
| | - Ines Kuehnert
- Leibniz‐Institut fuer Polymerforschung Dresden e. V., Department Processing Dresden Germany
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Affiliation(s)
- Andrea Dorigato
- Department of Industrial Engineering and INSTM Research UnitUniversity of Trento Trento Italy
| | - Alessandro Pegoretti
- Department of Industrial Engineering and INSTM Research UnitUniversity of Trento Trento Italy
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Affiliation(s)
- Suman Thakur
- Institute of Textiles and Clothing; The Hong Kong Polytechnic University; Hong Kong China
| | - Md Anwar Jahid
- Institute of Textiles and Clothing; The Hong Kong Polytechnic University; Hong Kong China
| | - Jinlian Hu
- Institute of Textiles and Clothing; The Hong Kong Polytechnic University; Hong Kong China
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16
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Fan J, Zhou W, Wang Q, Chu Z, Yang L, Yang L, Sun J, Zhao L, Xu J, Liang Y, Chen Z. Structure dependence of water vapor permeation in polymer nanocomposite membranes investigated by positron annihilation lifetime spectroscopy. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.12.046] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Karimi MB, Khanbabaei G, Mir Mohamad Sadeghi G, Jafari A. Effect of nano-silica on gas permeation properties of polyether-based polyurethane membrane in the presence of esterified canola oil diol as a nucleation agent for hard segments. J Appl Polym Sci 2017. [DOI: 10.1002/app.45979] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mohammad Bagher Karimi
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; P.O. Box 15875-4413, Tehran Iran
| | - Ghader Khanbabaei
- Development Division of Chemical; Polymer and Petrochemical Technology, Research Institute of Petroleum Industry; P.O. Box 18745-4163, Tehran Iran
| | - Gity Mir Mohamad Sadeghi
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; P.O. Box 15875-4413, Tehran Iran
| | - Arman Jafari
- Department of Chemical Engineering, School of Chemical and Petroleum Engineering; Shiraz University; Shiraz 71348-51154 Iran
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Gholizadeh B, Arefazar A, Barikani M, Hemmati M. Polar/nonpolar gas transfer through PEO-based copolymers membranes. Journal of Macromolecular Science, Part A 2017. [DOI: 10.1080/10601325.2017.1336724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- B. Gholizadeh
- Polymer engineering and color technology department, Amir Kabir University, Tehran, Iran
| | - A. Arefazar
- Polymer engineering and color technology department, Amir Kabir University, Tehran, Iran
- Nano and smart polymers centre of excellence, Amir Kabir University, Tehran, Iran
| | - M. Barikani
- Iran polymer and petrochemical institute, Tehran, Iran
| | - M. Hemmati
- Polymer science & engineering department, Research Institute of Petroleum Industry, Tehran, Iran
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Abstract
Purpose
Shape memory polymers (SMPs) respond with a change in their shape against a specific stimulus by memorizing their original shape and are reformed after deformation most often by changing the temperature of the surrounding without additional mechanical efforts. In the coming years, these polymers indeed will be in limelight to manufacture textile materials which will retain their shape even after prolonged use under disturbed conditions. This study aims at defining shape memory materials and polymers as well as their technological characteristics and also highlights application in various fields of textiles.
Design/methodology/approach
The methodology used to explain these SMPs have been carried out starting with the discussion on their properties, their physical nature, types, viz., shape memory alloys (SMAs), shape memory ceramics, shape memory hybrid, magnetic shape memory alloy, shape memory composites, shape memory gels and SMP along with properties of each type. Other related details of these polymers, such as their advantages, structure and mechanism, shape memory functionality, thermally responsive SMPs and applications, have been detailed.
Findings
It has been observed that the SMPs are very important in the fields of wet and melt-spun fibers to offer novel and functional properties, cotton and wool fabric finishing, to produce SMP films, foams and laminated textiles, water vapor permeable and breathable SMP films, etc.
Originality/value
The field of SMPs is new, and very limited information is available to enable their smooth production and handling.
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Luo C, Liu W, Luo B, Tian J, Wen W, Liu M, Zhou C. Antibacterial activity and cytocompatibility of chitooligosaccharide-modified polyurethane membrane via polydopamine adhesive layer. Carbohydr Polym 2017; 156:235-243. [DOI: 10.1016/j.carbpol.2016.09.036] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 09/04/2016] [Accepted: 09/13/2016] [Indexed: 01/18/2023]
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Riaz T, Ahmad A, Saleemi S, Adrees M, Jamshed F, Hai AM, Jamil T. Synthesis and characterization of polyurethane-cellulose acetate blend membrane for chromium (VI) removal. Carbohydr Polym 2016; 153:582-591. [DOI: 10.1016/j.carbpol.2016.08.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 07/20/2016] [Accepted: 08/04/2016] [Indexed: 10/21/2022]
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24
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Shaikh M, Choudhury NR, Knott R, Kanwar JR, Garg S. Effect of polymer microstructure on the docetaxel release and stability of polyurethane formulation. Eur J Pharm Biopharm 2016; 101:82-9. [PMID: 26829379 DOI: 10.1016/j.ejpb.2016.01.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 12/12/2015] [Accepted: 01/20/2016] [Indexed: 11/20/2022]
Abstract
PurSil®AL20 (PUS), a copolymer of 4,4'-dicyclohexylmethane diisocyanate (HMDI), 1,4-butane diol (BD), poly-tetramethylene oxide (PTMO) and poly-dimethyl siloxane (PDMS) was investigated for stability as a vehicle for Docetaxel (DTX) delivery through oesophageal drug eluting stent (DES). On exposure to stability test conditions, it was found that DTX release rate declined at 4 and 40 °C. In order to divulge reasons underlying this, changes in DTX solid state as well as PUS microstructure were followed. It was found that re-crystallization of DTX in PDMS rich regions was reducing the drug release at both 4 °C and 40 °C samples. So far microstructural features have not been correlated with stability and drug release, and in this study we found that at 40 °C increase in microstructural domain sizes and the inter-domain distances (from ∼85 Å to 129 Å) were responsible for hindering the DTX release in addition to DTX re-crystallization.
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Rath SK, Edatholath SS, Patro TU, Sudarshan K, Sastry PU, Pujari PK, Harikrishnan G. Solvent transport through hard–soft segmented polymer nanocomposites. Phys Chem Chem Phys 2016; 18:2682-9. [DOI: 10.1039/c5cp04432d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article illustrates the non-barrier influence of filler on solvent transport through phase segmented block co-polymer nanocomposite.
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Affiliation(s)
| | - Saji S. Edatholath
- Department of Chemical Engineering
- Indian Institute of Technology Kharagpur
- India
| | - T. Umasankar Patro
- Department of Materials Engineering
- Defence Institute of Advanced Technology
- Pune
- India
| | - Kathi Sudarshan
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai
- India
| | - P. U. Sastry
- Solid State Physics Division
- Bhabha Atomic Research Centre
- Mumbai
- India
| | | | - G. Harikrishnan
- Department of Chemical Engineering
- Indian Institute of Technology Kharagpur
- India
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Ji P, Jin J, Ji G, Wang C, Wang H. Investigation of the state and distribution of water in poly(ethylene terephthalate)/polyethylene glycol copolymers with various molecular weight of polyethylene glycol. POLYM ENG SCI 2015. [DOI: 10.1002/pen.24104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Peng Ji
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering, Donghua University; Shanghai 201620 People's Republic of China
| | - Jin Jin
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering, Donghua University; Shanghai 201620 People's Republic of China
| | - Guoying Ji
- Zhejiang Hengyi Group, Co., Ltd.; Hangzhou Zhejiang 311209 China
| | - Chaosheng Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering, Donghua University; Shanghai 201620 People's Republic of China
| | - Huaping Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering, Donghua University; Shanghai 201620 People's Republic of China
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Abstract
Hollow silica spheres with different hollow size and shell thickness were synthesized via a template method using PS spheres as templates and characterized by transmission electron microscopy, scanning electron microscopy, X-ray diffraction and Brunauer–Emmett–Teller analysis.
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Affiliation(s)
- Yan Bao
- College of Resources and Environment
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
- Shaanxi Research Institute of Agricultural Products Processing Technology
| | - Chunhua Shi
- College of Resources and Environment
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
- Shaanxi Research Institute of Agricultural Products Processing Technology
| | - Yongqiang Yang
- College of Resources and Environment
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
- Shaanxi Research Institute of Agricultural Products Processing Technology
| | - Jianzhong Ma
- College of Resources and Environment
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
- Shaanxi Research Institute of Agricultural Products Processing Technology
| | - Risong Sha
- College of Resources and Environment
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
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28
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Zhou H, Yu B, Xun R, Li N, Wu K, Sun H, Zhou Z. Novel temperature-sensitive and pH-sensitive polyurethane membranes: preparation and characterization. ASIA-PAC J CHEM ENG 2014. [DOI: 10.1002/apj.1862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hu Zhou
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
| | - Bin Yu
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
| | - Ruiping Xun
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
| | - Ning Li
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
| | - Kejian Wu
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
| | - Hanzhou Sun
- College of Science; Central South University of Forestry and Technology; Changsha 410004 China
| | - Zhihua Zhou
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
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Chung YC, Khiem ND, Choi JW, Chun BC. Covalent Incorporation of Cellulose Derivative into Polyurethane Copolymers and the Effect on Crosslinking and Water Vapor Permeability. Journal of Macromolecular Science, Part A 2014. [DOI: 10.1080/10601325.2014.882700] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Bao Y, Yang Y, Ma J. Fabrication of monodisperse hollow silica spheres and effect on water vapor permeability of polyacrylate membrane. J Colloid Interface Sci 2013; 407:155-63. [DOI: 10.1016/j.jcis.2013.06.045] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 06/08/2013] [Accepted: 06/14/2013] [Indexed: 10/26/2022]
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Chao WC, Huang YH, Liaw DJ, Hsieh YY, Hung WS, Huang SH, Lee KR, Lai JY. Correlating the microstructure of novel polyamide thin-film composite membranes with ethanol dehydration performances. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.01.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hu J, Zhu Y, Huang H, Lu J. Recent advances in shape–memory polymers: Structure, mechanism, functionality, modeling and applications. Prog Polym Sci 2012; 37:1720-63. [DOI: 10.1016/j.progpolymsci.2012.06.001] [Citation(s) in RCA: 919] [Impact Index Per Article: 76.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Talakesh MM, Sadeghi M, Chenar MP, Khosravi A. Gas separation properties of poly(ethylene glycol)/poly(tetramethylene glycol) based polyurethane membranes. J Memb Sci 2012. [DOI: 10.1016/j.memsci.2012.05.033] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Chung YC, Chung HM, Choi JW, Chun BC. The sustainable shape recovery of polyurethane copolymer grafted with pendant anthryl group under extremely low temperature conditions. HIGH PERFORM POLYM 2012. [DOI: 10.1177/0954008312439318] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The impact of the pendant anthryl group on the low temperature flexibility and tensile properties of a polyurethane block copolymer was investigated. The pendant anthryl group was designed to interrupt molecular interactions and to disturb the close contact between polyurethane (PU) chains through its rigid aromatic rings; thus, to improve the flexibility at extremely low temperatures, while maintaining high and reproducible tensile properties and the shape recovery at ambient temperatures. The attachment of the anthryl group was confirmed using the infrared (IR), nuclear magnetic resonance (NMR), and ultraviolet-visible (UV-VIS) spectroscopy. Increasing the anthryl content led to an unusual increase in the crosslink density due to partial crosslinking by the grafting reagent. The shape recovery and retention results were reproducible after performing repeated shape memory tests. Finally, the effect of the anthryl group on the shape recovery at −30 °C was compared with that of linear PU, and the reason for the remarkable flexibility at low temperature is discussed.
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Affiliation(s)
- Yong-Chan Chung
- Department of Chemistry, The University of Suwon, Hwasung, Korea
| | - Hyang Mi Chung
- Department of Chemistry, The University of Suwon, Hwasung, Korea
| | - Jae Won Choi
- School of Nano Engineering, Center for Nano Manufacturing, Institute of Basic Science, Inje University, Gimhae, Korea
| | - Byoung Chul Chun
- School of Nano Engineering, Center for Nano Manufacturing, Institute of Basic Science, Inje University, Gimhae, Korea
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Meng Q, Hu J, Liu B, Zhu Y. A Low-Temperature Thermoplastic Anti-bacterial Medical Orthotic Material Made of Shape Memory Polyurethane Ionomer: Influence of Ionic Group. Journal of Biomaterials Science, Polymer Edition 2012; 20:199-218. [DOI: 10.1163/156856209x404497] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Qinghao Meng
- a Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Kowloon, Hong Kong, P. R. China
| | - Jinlian Hu
- b Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Kowloon, Hong Kong, P. R. China
| | - Baohua Liu
- c Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Kowloon, Hong Kong, P. R. China
| | - Yong Zhu
- d Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Kowloon, Hong Kong, P. R. China
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Meng Q, Hu J, Zhu Y. Properties of shape memory polyurethane used as a low-temperature thermoplastic biomedical orthotic material: influence of hard segment content. Journal of Biomaterials Science, Polymer Edition 2012; 19:1437-54. [DOI: 10.1163/156856208786140355] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Qinghao Meng
- a Institute of Textiles and Clothing, Hong Kong Polytechnic University, Kowloon, Hong Kong, P. R. China
| | - Jinlian Hu
- b Institute of Textiles and Clothing, Hong Kong Polytechnic University, Kowloon, Hong Kong, P. R. China
| | - Yong Zhu
- c Institute of Textiles and Clothing, Hong Kong Polytechnic University, Kowloon, Hong Kong, P. R. China
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Affiliation(s)
- Shelia A. Ward
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1Xl, U.K
| | - Richard A. Pethrick
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1Xl, U.K
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Sharma SK, Zaydouri A, Roudaut G, Duplâtre G. Effect of water on glass transition in starch/sucrose matrices investigated through positron annihilation lifetime spectroscopy: a new approach. Phys Chem Chem Phys 2011; 13:19338-44. [PMID: 21956245 DOI: 10.1039/c1cp21243e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glass transition is studied through positron annihilation lifetime spectroscopy (PALS) in maize starch matrices containing 10 (batch STS10) and 20 (STS20) w/w% sucrose, as a function of temperature (T) and water content (c(w)). To circumvent important losses of water upon heating while recording the PALS spectra, a new method is developed: instead of a series of measurements of τ(3), the triplet positronium lifetime, at different T, the latter is kept constant and the series relates to c(w), which is left to decrease at a constant rate. Similarly to the changes in τ(3) with T, the τ(3)vs. c(w) plots obtained show a smooth linear increase until a break, denoting the occurrence of glass transition, followed by a sharper increase. The gradients appear to be independent of T. The variation of the glass transition temperature, T(g), with c(w) shows a broad sigmoid with a large linear central part; as expected from the plasticising effect of sucrose, the plot for STS20 lies some 10 K below that for STS10. Results from differential scanning calorimetry for STS20 yield T(g) values some 15 K higher than from PALS. On the basis of the general shape of the τ(3)vs. T variations, a general equation is set for τ(3)(T, c(w)), leading one to expect a similar shape for τ(3)vs. c(w), as experimentally observed.
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Affiliation(s)
- Sandeep Kumar Sharma
- Chimie Nucléaire, Institut Pluridisciplinaire Hubert Curien, UDS/IN2P3/CNRS, 23 rue du Loess, B.P. 28 670737 Strasbourg Cedex 2, France.
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Liu H, Li SC, Liu Y, Iqbal M. Thermostimulative shape memory effect of linear low-density polyethylene/polypropylene (LLDPE/PP) blends compatibilized by crosslinked LLDPE/PP blend (LLDPE-PP). J Appl Polym Sci 2011. [DOI: 10.1002/app.34345] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Chao WC, Huang SH, An Q, Liaw DJ, Huang YC, Lee KR, Lai JY. Novel interfacially-polymerized polyamide thin-film composite membranes: Studies on characterization, pervaporation, and positron annihilation spectroscopy. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.03.049] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhou H, Chen Y, Fan H, Shi H, Luo Z, Shi B. The polyurethane/SiO2 nano-hybrid membrane with temperature sensitivity for water vapor permeation. J Memb Sci 2008. [DOI: 10.1016/j.memsci.2008.02.024] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Zhou H, Chen Y, Fan H, Shi H, Luo Z, Shi B. Water vapor permeability of the polyurethane/TiO2 nanohybrid membrane with temperature sensitivity. J Appl Polym Sci 2008. [DOI: 10.1002/app.28427] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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