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Paez-Amieva Y, Martín-Martínez JM. Understanding the Interactions between Soft Segments in Polyurethanes: Structural Synergies in Blends of Polyester and Polycarbonate Diol Polyols. Polymers (Basel) 2023; 15:4494. [PMID: 38231940 PMCID: PMC10708524 DOI: 10.3390/polym15234494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 01/19/2024] Open
Abstract
There are no previous studies on the interactions between polyols of different nature as a model for understanding the interactions between soft segments in PUs. In this study, different blends of two polyols of different natures (polyester-PE, and polycarbonate diol-CD) and similar molecular weights were prepared and their structural, thermal, surface, viscoelastic, and self-adhesion properties were assessed. Different experimental techniques were used: infrared spectroscopy (ATR-IR), differential scanning calorimetry (DSC), X-ray diffraction, thermal gravimetric analysis (TGA), and plate-plate rheology. PE showed a larger number of structural repeating units and a higher number of polar groups than CD, but the carbonate-carbonate interactions in CD were stronger than the ester-ester interactions in PE. The blending of CD and PE imparted synergic structural properties, particularly in the blends containing less than 50 wt.% PE, they were associated with the disrupt of the carbonate-carbonate interactions in CD and the formation of new ester-carbonate and hydroxyl-carbonate interactions. CD + PE blends with less than 50 wt.% PE exhibited higher glass transition temperatures, a new diffraction peak at 2θ = 24°, one additional thermal degradation at 426-436 °C, and a less-steep decline of the storage moduli. Furthermore, the different interactions between the polyol chains in the blends were also evidenced on their surface properties, and all CD + PE blends showed self-adhesion properties which seemed related to the existence of ester-carbonate and carbonate-carbonate interactions.
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2
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Sture B, Yakushin V, Vevere L, Cabulis U. Influence of Long-Term Storage and UV Light Exposure on Characteristics of Polyurethane Foams for Cryogenic Insulation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7071. [PMID: 38005001 PMCID: PMC10672591 DOI: 10.3390/ma16227071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/27/2023] [Accepted: 11/04/2023] [Indexed: 11/26/2023]
Abstract
Rigid polyurethane (PUR) foams have been the most effective insulation material used in space launchers since the beginning of cryogenic fuel use, due to their outstanding thermal and mechanical properties. In this study, spray-applied PUR foams using different ratios of amine-based catalysts were produced. Due to climate change, several restrictions have been made regarding the usage of blowing agents used for PUR foam production. Lately, hydrofluoroolefins (HFOs) have been suggested as an alternative for PUR foam production due to their low global warming potential (GWP) and ozone depletion potential (ODP), replacing the hydrofluorocarbons (HFCs) so far used. This change in blowing agents naturally altered the usage of catalysts. Reactive amine-based catalysts are less hazardous because of their low volatility and ability to react successfully with isocyanate or polyols. Spray-applied PUR foams with a potential application for cryogenic insulation were produced and tested for long-term storage, analyzing parameters such as the pH value of polyol composition, foaming kinetics (trise, tcream), etc. Athermal analysis (TG, DSC) was also applied to developed materials, as well as artificial ageing by exposing samples to UV light. It was discovered that PUR foams obtained using reactive amine-based catalysts, such as Polycat 203 and 218, have a higher integral heat capacity, but polyol mixtures containing these catalysts cannot exceed a storage time of more than 4 months. It was also observed from artificial ageing tests of PUR cryogenic insulation by exposure to UV light that the thickness of the degraded layer reached 0.8 mm (after 1000 h), but no significant destruction of cellular structure deeper in the material was observed.
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Affiliation(s)
| | | | | | - Ugis Cabulis
- Polymer Laboratory, Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (B.S.); (V.Y.); (L.V.)
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3
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Mai J, Pratt S, Laycock B, Chan CM. Synthesis and Characterisation of Poly(3-hydroxybutyrate- co-3-hydroxyvalerate)- b-poly(3-hydroxybutyrate- co-3-hydroxyvalerate) Multi-Block Copolymers Produced Using Diisocyanate Chemistry. Polymers (Basel) 2023; 15:3257. [PMID: 37571152 PMCID: PMC10422281 DOI: 10.3390/polym15153257] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/23/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Bacterially derived polyhydroxyalkanoates (PHAs) are attractive alternatives to commodity petroleum-derived plastics. The most common forms of the short chain length (scl-) PHAs, including poly(3-hydroxybutyrate) (P3HB) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), are currently limited in application because they are relatively stiff and brittle. The synthesis of PHA-b-PHA block copolymers could enhance the physical properties of PHAs. Therefore, this work explores the synthesis of PHBV-b-PHBV using relatively high molecular weight hydroxy-functionalised PHBV starting materials, coupled using facile diisocyanate chemistry, delivering industrially relevant high-molecular-weight block copolymeric products. A two-step synthesis approach was compared with a one-step approach, both of which resulted in successful block copolymer production. However, the two-step synthesis was shown to be less effective in building molecular weight. Both synthetic approaches were affected by additional isocyanate reactions resulting in the formation of by-products such as allophanate and likely biuret groups, which delivered partial cross-linking and higher molecular weights in the resulting multi-block products, identified for the first time as likely and significant by-products in such reactions, affecting the product performance.
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Affiliation(s)
| | | | - Bronwyn Laycock
- School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia; (J.M.); (S.P.)
| | - Clement Matthew Chan
- School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia; (J.M.); (S.P.)
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4
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Sepehri Sadeghian MS, Raisi A. A thermodynamic study on relationship between gas separation properties and microstructure of polyurethane membranes. Sci Rep 2023; 13:6038. [PMID: 37055449 PMCID: PMC10102001 DOI: 10.1038/s41598-023-32908-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 04/04/2023] [Indexed: 04/15/2023] Open
Abstract
The lattice fluid (LF) thermodynamic model and extended Vrentas' free-volume (E-VSD) theory were coupled to study the gas separation properties of the linear thermoplastic polyurethane (TPU) membranes with different chemical structures by analyzing their microstructures. A set of characteristic parameters were extracted using the repeating unit of the TPU samples and led to prediction of reliable polymer densities (AARD < 6%) and gas solubilities. The viscoelastic parameters, which were obtained from the DMTA analysis, were also estimated the gas diffusion vs. temperature, precisely. The degree of microphase mixing based on the DSC analysis was in order: TPU-1 (4.84 wt%) < TPU-2 (14.16 wt%) < TPU-3 (19.92 wt%). It was found that the TPU-1 membrane had the highest degree of crystallinity, but showed higher gas solubilities and permeabilities because this membrane has the least degree of microphase mixing. These values, in combination with the gas permeation results, showed that the content of the hard segment along with the degree of microphase mixing and other microstructural parameters like crystallinity were the determinative parameters.
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Affiliation(s)
- Mohammad Sajad Sepehri Sadeghian
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Hafez Ave., P.O. Box 15875-4413, Tehran, Iran
| | - Ahmadreza Raisi
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Hafez Ave., P.O. Box 15875-4413, Tehran, Iran.
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5
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Yakushin V, Rundans M, Holynska M, Sture B, Cabulis U. Influence of Reactive Amine-Based Catalysts on Cryogenic Properties of Rigid Polyurethane Foams for Space and On-Ground Applications. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2798. [PMID: 37049092 PMCID: PMC10096171 DOI: 10.3390/ma16072798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/23/2023] [Accepted: 03/29/2023] [Indexed: 06/19/2023]
Abstract
Rigid polyurethane (PUR) foams have outstanding properties, and some of them are successfully used even today as cryogenic insulation. The fourth-generation blowing agent Solstice® LBA and commercial polyols were used for the production of a low-density cryogenic PUR foam composition. A lab-scale pouring method for PUR foam preparation and up-scaling of the processes using an industrial spraying machine are described in this article. For the determination of the foam properties at cryogenic temperature, original methods, devices, and appliances were used. The properties at room and cryogenic temperatures of the developed PUR foams using a low-toxicity, bismuth-based, and low-emission amine catalyst were compared with a reference foam with a conventional tin-based additive amine catalyst. It was found that the values of important cryogenic characteristics such as adhesion strength after cryoshock and the safety coefficient of the PUR foams formed with new reactive-type amine-based catalysts and with the blowing agent Solstice® LBA were higher than those of the foam with conventional catalysts.
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Affiliation(s)
- Vladimir Yakushin
- Latvian State Institute of Wood Chemistry, Polymer Laboratory, Dzerbenes Street 27, LV-1006 Riga, Latvia
| | - Maris Rundans
- Latvian State Institute of Wood Chemistry, Polymer Laboratory, Dzerbenes Street 27, LV-1006 Riga, Latvia
| | | | - Beatrise Sture
- Latvian State Institute of Wood Chemistry, Polymer Laboratory, Dzerbenes Street 27, LV-1006 Riga, Latvia
| | - Ugis Cabulis
- Latvian State Institute of Wood Chemistry, Polymer Laboratory, Dzerbenes Street 27, LV-1006 Riga, Latvia
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6
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Geng Z, Pang A, Ding T, Guo X, Yang R, Luo Y, Zhai J. Overlooked Impact of Interchain H-Bonding between Cross-Links on the Mechanical Properties of Thermoset Polyurethane Elastomers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zhishuai Geng
- School of Materials, Beijing Institute of Technology, Beijing100081, China
| | - Aimin Pang
- Key Laboratory of Aerospace Chemical Power Technology, Xiangyang441003, China
| | - Tengfei Ding
- School of Materials, Beijing Institute of Technology, Beijing100081, China
- BOE Technology Group Co., Ltd., Beijing100176, China
| | - Xiaoyan Guo
- School of Materials, Beijing Institute of Technology, Beijing100081, China
| | - Rongjie Yang
- School of Materials, Beijing Institute of Technology, Beijing100081, China
| | - Yunjun Luo
- School of Materials, Beijing Institute of Technology, Beijing100081, China
| | - Jinxian Zhai
- School of Materials, Beijing Institute of Technology, Beijing100081, China
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7
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Sutyak K, Iezzi EB, Daniels GC, Camerino E. Hydrolytically Stable and Thermo-Mechanically Tunable Poly(Urethane) Thermoset Networks that Selectively Degrade and Generate Reusable Molecules. ACS APPLIED MATERIALS & INTERFACES 2022; 14:22407-22417. [PMID: 35503369 PMCID: PMC9242536 DOI: 10.1021/acsami.2c00485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
Cross-linked polymeric networks that possess tunable properties and degrade on-demand have broad applications in today's society. Herein, we report on silyl-containing poly(urethane) (silyl-PU) thermoset networks, which are highly cross-linked stimuli-responsive materials with hydrolytic stability at 37.7 °C and 95% relative humidity, thermal stability of 280-311.2 °C, tensile properties of 0.38-51.7 MPa strength and 73.7-256.4% elongation, including storage modulus of 2268-3499 MPa (in the glassy state). However, unlike traditional (i.e., nondegradable) PU thermosets, these silyl-PUs selectively activate with fluoride ion under mild and static conditions to completely degrade, via cascading bond cleavages, and generate recoverable and reusable molecules. Silyl-PUs, as thin films, also demonstrated complete removal (within 30 min) from a strongly adhered epoxy thermoset network without altering the structure of the latter. Silyl-PU thermosets have potential applications in composite parts, vehicle and industrial coatings, and rigid plastics for personal devices, and may reduce environmental waste compared to nondegradable, single-use materials.
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Affiliation(s)
- Keith
B. Sutyak
- ASEE
Post-Doctoral Fellow, U.S. Naval Research
Laboratory, Chemistry Division, Washington, DC 20375, United States
| | - Erick B. Iezzi
- U.S.
Naval Research Laboratory, Chemistry Division, Washington, DC 20375, United States
| | - Grant C. Daniels
- U.S.
Naval Research Laboratory, Chemistry Division, Washington, DC 20375, United States
| | - Eugene Camerino
- U.S.
Naval Research Laboratory, Chemistry Division, Washington, DC 20375, United States
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8
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Ma J, Deng B, Fan Y, Huang X, Chen D, Ma Y, Chen H, Grzesiak AL, Feng S. Polyurethane elastomers with amphiphilic ABA tri-block co-polymers as the soft segments showing record-high tensile strength and simultaneously increased ductility. Polym Chem 2022. [DOI: 10.1039/d2py00752e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyurethane elastomers with amphiphilic ABA tri-block co-polymers as the soft segments robustly show record-high tensile strength and simultaneously increased ductility via producing small and uniform hard domains.
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Affiliation(s)
- Jun Ma
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Baixue Deng
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Yanbin Fan
- The Dow Chemical Company, 936 Zhangheng Road, Shanghai 201203, China
| | - Xiayun Huang
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Daoyong Chen
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Yan Ma
- The Dow Chemical Company, 936 Zhangheng Road, Shanghai 201203, China
| | - Hongyu Chen
- The Dow Chemical Company, 936 Zhangheng Road, Shanghai 201203, China
| | - Adam L. Grzesiak
- The Dow Chemical Company, 693 Washington Street, Midland, Michigan 48640, USA
| | - Shaoguang Feng
- The Dow Chemical Company, 936 Zhangheng Road, Shanghai 201203, China
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9
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New innovations in pavement materials and engineering: A review on pavement engineering research 2021. JOURNAL OF TRAFFIC AND TRANSPORTATION ENGINEERING (ENGLISH EDITION) 2021. [DOI: 10.1016/j.jtte.2021.10.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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10
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Mohanty SR, Mohanty S, Samal SK, Nayak SK. Acrylic‐ester‐polyol based novel two‐component polyurethane clear coat: Evaluation of performance characteristics. J Appl Polym Sci 2021. [DOI: 10.1002/app.50794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Smruti Ranjan Mohanty
- School for Advanced Research in Polymers (SARP): Laboratory for Advanced Research in Polymeric Materials (LARPM) Central Institute of Petrochemicals Engineering and Technology India
| | - Smita Mohanty
- School for Advanced Research in Polymers (SARP): Laboratory for Advanced Research in Polymeric Materials (LARPM) Central Institute of Petrochemicals Engineering and Technology India
| | - Sushanta K. Samal
- Central Institute Of Petrochemicals Engineering and Technology Raipur Chhattisgarh India
| | - Sanjay K. Nayak
- School for Advanced Research in Polymers (SARP): Laboratory for Advanced Research in Polymeric Materials (LARPM) Central Institute of Petrochemicals Engineering and Technology India
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11
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Influence of Silica-Aerogel on Mechanical Characteristics of Polyurethane-Based Composites: Thermal Conductivity and Strength. MATERIALS 2021; 14:ma14071790. [PMID: 33916354 PMCID: PMC8038616 DOI: 10.3390/ma14071790] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/30/2021] [Accepted: 04/02/2021] [Indexed: 11/26/2022]
Abstract
Polyurethane foam (PUF) has generally been used in liquefied natural gas (LNG) carrier cargo containment systems (CCSs) owing to its excellent mechanical and thermal properties over a wide range of temperatures. An LNG CCS must be designed to withstand extreme environmental conditions. However, as the insulation material for LNGC CCSs, PUF has two major limitations: its strength and thermal conductivity. In the present study, PUFs were synthesized with various weight percentages of porous silica aerogel to reinforce the characteristics of PUF used in LNG carrier insulation systems. To evaluate the mechanical strength of the PUF-silica aerogel composites considering LNG loading/unloading environmental conditions, compressive tests were conducted at room temperature (20 °C) and a cryogenic temperature (−163 °C). In addition, the thermal insulation performance and cellular structure were identified to analyze the effects of silica aerogels on cell morphology. The cell morphology of PUF-silica aerogel composites was relatively homogeneous, and the cell shape remained closed at 1 wt.% in comparison to the other concentrations. As a result, the mechanical and thermal properties were significantly improved by the addition of 1 wt.% silica aerogel to the PUF. The mechanical properties were reduced by increasing the silica aerogel content to 3 wt.% and 5 wt.%, mainly because of the pores generated on the surface of the composites.
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12
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Rincón E, Balu AM, Luque R, Serrano L. Insulating rigid polyurethane foams from laurel tree pruning based polyol. J Appl Polym Sci 2021. [DOI: 10.1002/app.49789] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Esther Rincón
- Departamento de Química Orgánica Universidad de Córdoba Córdoba Spain
- Departamento de Química Inorgánica e Ingeniería Química Universidad de Córdoba Córdoba Spain
| | - Alina M. Balu
- Departamento de Química Orgánica Universidad de Córdoba Córdoba Spain
| | - Rafael Luque
- Departamento de Química Orgánica Universidad de Córdoba Córdoba Spain
| | - Luis Serrano
- Departamento de Química Inorgánica e Ingeniería Química Universidad de Córdoba Córdoba Spain
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13
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A highly stretchable and self-healing hydroxy-terminated polybutadiene elastomer. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2020.11.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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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] [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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15
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Zhang Y, Li F, Peng N, Peng L. Environmental impact assessment of air-permeable plastic runway production in China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 730:139073. [PMID: 32388380 DOI: 10.1016/j.scitotenv.2020.139073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 04/25/2020] [Accepted: 04/26/2020] [Indexed: 06/11/2023]
Abstract
With the rapid development of plastic runways in China, incidents of toxic runways that are detrimental to human health frequently occurred. This phenomenon has resulted in public concern on the safety and cleanliness of plastic runways. To improve the sustainability of these runways, the environmental performance of the produced plastic runways should be evaluated. The critical hotspots for plastic runway studies should be determined, and a cleaner optimization path of critical materials should be explored. In this study, a cradle-to-gate life cycle assessment (LCA) on the air-permeable plastic runway was conducted. The green factory formula was identified, and the environmental impacts of the production process were quantitatively analyzed. Detailed life cycle inventory data were obtained from the on-site survey of typical plastic runway manufacturer enterprises in China. Environmental impacts were calculated using the CML 2001 method built into the GaBi 8.0 software. Results indicated that the 1: 7 ratio of polyurethane adhesive to ethylene-propylene-diene monomer rubber particles was the greenest formula with the least environmental impact. The environmental hotspots were from the front-end of raw material production during the mixing phase and the biomass steam input during the curing phase. The characteristic pollutants generated from mixing phase were CO2, methane, NOx, and VOCs, whereas those from the curing phase were CO2, NOx, SO2, freon, HCl, and NH3. Moreover, methylene diisocyanate (MDI) was the cleaner raw material for air-permeable plastic runway production, because the environmental impact of producing an equal mass of MDI was 39%-89% of that by toluene diisocyanate. Thus, this LCA study presents a strategy for the sustainable improvement of air-permeable plastic runway production and also proposes policy recommendations for decision makers.
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Affiliation(s)
- Yi Zhang
- College of the Environment & Ecology, Xiamen University, Xiang'an South Road, Xiang'an District, Xiamen 361102, China.
| | - Feng Li
- Taizhou Ecological Environment Bureau, Yonghui Road, Hailing District, Taizhou City, Jiangsu Province, 225300, China
| | - Najun Peng
- College of the Environment & Ecology, Xiamen University, Xiang'an South Road, Xiang'an District, Xiamen 361102, China.
| | - Lihong Peng
- College of the Environment & Ecology, Xiamen University, Xiang'an South Road, Xiang'an District, Xiamen 361102, China.
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16
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Parcheta P, Głowińska E, Datta J. Effect of bio-based components on the chemical structure, thermal stability and mechanical properties of green thermoplastic polyurethane elastomers. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109422] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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17
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Synthesis and characterization of polyethylene glycol-phenol-formaldehyde based polyurethane composite. Sci Rep 2019; 9:19545. [PMID: 31862966 PMCID: PMC6925240 DOI: 10.1038/s41598-019-56147-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 11/21/2019] [Indexed: 11/08/2022] Open
Abstract
A series of phenol-formaldehyde-polyethylene glycol polyether polyols (PF-PEGs) were synthesized through the condensation polymerization and etherification of phenol, formaldehyde, and poly(ethylene glycol) (PEG) under alkaline conditions and subsequently reacted with 1,6-hexamethylene diisocyanate to obtain polyurethane (PU) films using acetone as solvents. The influence of phenol and formaldehyde to PEG mass ratio ((P + F)/PEG) on the hydroxyl number of PF-PEGs and mechanical properties, thermal stabilities, crystallization behaviors, as well as microstructure of polyurethane composite films were studied using chemical analysis, mechanical tests, thermogravimetric analyses (TGA), dynamic mechanical analyses (DMA), X-ray diffraction (XRD), scanning and transmission electron microscopies (SEM and TEM), respectively. Results demonstrated that PF-PEGs with (P + F)/PEG of 50/50 had the highest hydroxyl number of 323 mg K(OH)/g. The incorporation of phenol and formaldehyde into PEG improved the mechanical properties of polyurethane films, glass transition temperature (Tg), and thermal properties but resulted in the brittleness characteristic of the composite films and low crystallization properties. Moreover, the synthesis mechanism of PF-PEGs polyurethane composite films was revealed, which would provide a theoretical base for the preparation of the rigid polyurethane foams based on phenolic resins.
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18
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Reardon S, Carroll AL, Dumont JH, Park CH, Lee K, Labouriau A. Extending the working life of toluene diisocyanate‐based polyurethanes. J Appl Polym Sci 2019. [DOI: 10.1002/app.47865] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Sean Reardon
- Chemistry Division Los Alamos National Laboratory Los Alamos New Mexico 87545
| | - Anna L. Carroll
- Chemistry Division Los Alamos National Laboratory Los Alamos New Mexico 87545
| | - Joseph H. Dumont
- Chemistry Division Los Alamos National Laboratory Los Alamos New Mexico 87545
| | - Chi Hoon Park
- Department of Energy Engineering Gyeongnam National University of Science and Technology Jinju‐si Republic of Korea
| | - Kwan‐Soo Lee
- Chemistry Division Los Alamos National Laboratory Los Alamos New Mexico 87545
| | - Andrea Labouriau
- Chemistry Division Los Alamos National Laboratory Los Alamos New Mexico 87545
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19
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Akram N, Zia KM, Saeed M, Usman M, Khan WG. Role of isophorone diisocyanate in the optimization of adhesion tendency of polyurethane pressure sensitive adhesives. J Appl Polym Sci 2019. [DOI: 10.1002/app.47124] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Nadia Akram
- Institute of ChemistryGovernment College University Faisalabad 38030 Pakistan
| | - Khalid Mahmood Zia
- Institute of ChemistryGovernment College University Faisalabad 38030 Pakistan
| | - Muhammad Saeed
- Institute of ChemistryGovernment College University Faisalabad 38030 Pakistan
| | - Muhammad Usman
- Institute of ChemistryGovernment College University Faisalabad 38030 Pakistan
| | - Waheed Gul Khan
- Department of ChemistryQuaid‐i‐Azam University Islamabad 45320 Pakistan
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20
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Javaid MA, Rizwan M, Khera RA, Zia KM, Saito K, Zuber M, Iqbal J, Langer P. Thermal degradation behavior and X-ray diffraction studies of chitosan based polyurethane bio-nanocomposites using different diisocyanates. Int J Biol Macromol 2018; 117:762-772. [DOI: 10.1016/j.ijbiomac.2018.05.209] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/16/2018] [Accepted: 05/28/2018] [Indexed: 10/16/2022]
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21
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Akram N, Zia KM, Saeed M, Usman M, Saleem S. Impact of macrodiols on the adhesion strength of polyurethane pressure-sensitive adhesives. J Appl Polym Sci 2018. [DOI: 10.1002/app.46635] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Nadia Akram
- Department of Chemistry; Government College University; Faisalabad 38030 Pakistan
| | - Khalid Mahmood Zia
- Department of Chemistry; Government College University; Faisalabad 38030 Pakistan
| | - Muhammad Saeed
- Department of Chemistry; Government College University; Faisalabad 38030 Pakistan
| | - Muhammad Usman
- Department of Chemistry; Government College University; Faisalabad 38030 Pakistan
| | - Sundas Saleem
- Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
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22
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Marcano A, Fatyeyeva K, Koun M, Dubuis P, Grimme M, Marais S. Recent developments in the field of barrier and permeability properties of segmented polyurethane elastomers. REV CHEM ENG 2018. [DOI: 10.1515/revce-2017-0033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Abstract
Polyurethane (PU) elastomers represent an important class of segmented copolymers. Thanks to many available chemical compositions, a rather broad range of chemical, physical, and biocompatible properties of PU can be obtained. These polymers are often characterized by high tensile and tear strength, elongation, fatigue life, and wear resistance. However, their relatively high permeability towards gases and water as well as their biocompatibility still limits the PU’s practical application, especially for biomedical use, for example, in implants and medical devices. In this review, the barrier and permeability properties of segmented PUs related to their chemical structure and physical and chemical properties have been discussed, including the latest developments and different approaches to improve the PU barrier properties.
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Affiliation(s)
- Aracelys Marcano
- Normandie University, UNIROUEN, INSA ROUEN, CNRS, PBS , 76000 Rouen , France
- CARMAT SA, 36 Avenue de l’Europe, Immeuble l’Etendard , 78140 Vélizy Villacoublay , France
| | - Kateryna Fatyeyeva
- Normandie University, UNIROUEN, INSA ROUEN, CNRS, PBS , 76000 Rouen , France
| | - Malys Koun
- ALTEN, 221bis Bd. Jean Jaurès , 92100 Boulogne-Billancourt , France
| | - Pascal Dubuis
- INOPROD, 46 Rue de Sarlieve , 63800 Cournon D’Auvergne , France
| | - Marc Grimme
- CARMAT SA, 36 Avenue de l’Europe, Immeuble l’Etendard , 78140 Vélizy Villacoublay , France
| | - Stéphane Marais
- Normandie University, UNIROUEN, INSA ROUEN, CNRS, PBS , 76000 Rouen , France
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23
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Komez A, Buyuksungur S, Hasirci V, Hasirci N. Effect of chemical structure on properties of polyurethanes: Temperature responsiveness and biocompatibility. J BIOACT COMPAT POL 2018. [DOI: 10.1177/0883911518783233] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Polyurethanes are known as one of the most biocompatible and inherently blood-compatible materials and have a wide range of applications in the medical field due to their controllable structure and properties. Durability, elasticity, elastomeric structure, fatigue resistance, versatility, and easy acceptance by the biological media after the application makes these polymers preferable in medical area. In this study, polyurethane films were prepared using poly(propylene-ethylene glycol) and either toluene-2,4-diisocyanate or 4,4′-methylenediphenyl diisocyanate without adding any other ingredients such as solvent, catalyst, or chain extender to prevent negative effects of leachable molecules. Mechanical tests were performed at room temperature while swelling tests were conducted in water and phosphate-buffered saline at 4°C, 25°C, and 37°C. Temperature responsiveness was observed for the samples synthesized using toluene-2,4-diisocyanate and poly(propylene-ethylene glycol). These samples had more than 100% swelling at 4°C and about 4% swelling at 25°C and 37°C. Cytocompatibility tests were performed by culturing the samples and their extracts with mouse fibroblast cells (L929). Viability of human umbilical vein endothelial cells was studied to examine the compatibility of the films for blood contacting devices. Both toluene-2,4-diisocyanate and 4,4-methylenediphenyl diisocyanate–based polyurethane films showed no cytotoxic effect and good biocompatibility. Oxygen plasma treatment enhanced hydrophilicity of the films. After plasma treatment, human umbilical vein endothelial cell attachment on toluene-2,4-diisocyanate–based polyurethane films improved and 4,4-methylenediphenyl diisocyanate–based polyurethane films maintained their high cell affinity. Polyurethanes presenting temperature responsiveness, high biocompatibility, and high affinity for human umbilical vein endothelial cells were synthesized in medical purity and in a reaction media involving only diisocyanate and diol components without addition of any solvent, chain extender, or catalyst. Polyurethanes with these properties and as produced in this study are reported for the first time in the literature.
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Affiliation(s)
- Aylin Komez
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey
- Graduate Department of Biotechnology, Middle East Technical University (METU), Ankara, Turkey
| | - Senem Buyuksungur
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey
- Graduate Department of Biotechnology, Middle East Technical University (METU), Ankara, Turkey
| | - Vasif Hasirci
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey
- Graduate Department of Biotechnology, Middle East Technical University (METU), Ankara, Turkey
- Department of Biological Sciences, Middle East Technical University (METU), Ankara, Turkey
| | - Nesrin Hasirci
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey
- Graduate Department of Biotechnology, Middle East Technical University (METU), Ankara, Turkey
- Department of Chemistry, Middle East Technical University (METU), Ankara, Turkey
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24
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Solanki A, Das M, Thakore S. A review on carbohydrate embedded polyurethanes: An emerging area in the scope of biomedical applications. Carbohydr Polym 2018; 181:1003-1016. [DOI: 10.1016/j.carbpol.2017.11.049] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 11/14/2017] [Accepted: 11/14/2017] [Indexed: 01/19/2023]
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25
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Abd El-Fattah M, Abd El-Wahab H, Bashandy M, El-Eisawy R, Abd El-hai F, Saeed M. Potential application of some coumarin derivatives incorporated thiazole ring as ecofriendly antimicrobial, flame retardant and corrosion inhibitor additives for polyurethane coating. PROGRESS IN ORGANIC COATINGS 2017; 111:57-66. [DOI: 10.1016/j.porgcoat.2017.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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26
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Mathew A, Kurmvanshi S, Mohanty S, K. Nayak S. Influence of structure-property relationship on the optical, thermal and mechanical properties of castor oil based transparent polyurethane for catheter applications. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2017. [DOI: 10.1080/10601325.2017.1332468] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Aiswarea Mathew
- Central Institute of Plastics Engineering & Technology, Guindy, Chennai, India
| | - Surendra Kurmvanshi
- Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology, Bhubaneswar, India
| | - Smita Mohanty
- Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology, Bhubaneswar, India
| | - Sanjay K. Nayak
- Central Institute of Plastics Engineering & Technology, Guindy, Chennai, India
- Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology, Bhubaneswar, India
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Investigation on the Influence of Chain Extenders on the Performance of One-Component Moisture-Curable Polyurethane Adhesives. Polymers (Basel) 2017; 9:polym9050184. [PMID: 30970862 PMCID: PMC6432034 DOI: 10.3390/polym9050184] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 05/15/2017] [Accepted: 05/16/2017] [Indexed: 11/17/2022] Open
Abstract
In this work, a number of chain extended moisture-curable urethane prepolymers were synthesized in order to develop isocyanate terminated urethane prepolymer formulations that would simultaneously display both high adhesive strength and low viscosity. Proton nuclear magnetic resonance spectroscopy (1H-NMR), size exclusion chromatography (SEC), differential scanning calorimetry (DSC), and Brookfield viscometry were utilized for characterizing the prepared urethane prepolymers. In addition, the adhesion strength of the cured prepolymers was determined by tensile shear strength test according to the DIN EN (Deutsches Institut für Normung, the German Institute for Standardization) 1465 standard. Especially, the role of different types of linear (butanediol, pentanediol) and branched chain extenders (dipropyleneglycol (di-PPG), tripropyleneglycol (tri-PPG) and the influence of their dosage on the degree of microphase separation between hard segments (HS) and soft segments (SS) in urethane prepolymers were studied. Furthermore, the benefits of utilizing either a one-step versus a two-step polymerization process were investigated. The results revealed that the extent of phase separation of different urethane prepolymers was dependent on the extent of hydrogen bonding interactions which was extensively studied by attenuated total reflectance infrared spectroscopy (ATR-FTIR). The incorporation of branched chain extenders (di-PPG and tri-PPG) did not result in notable phase separation between hard segments and soft segments, while linear chain extenders (pentanediol and butanediol) readily promoted phase separation. The degree of phase separation was particularly pronounced for butanediol, and when the linear chain extender ratio was higher than or equal to 0.74. Compared with a two-stage process, one-stage process produced more randomly distributed polymer chains with highly dispersed hard segments. Thus, urethane prepolymers exhibiting strong adhesive strength with simultaneously low viscosity were successfully developed by systematic adjustment of structural parameters.
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28
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29
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Pseudo-semi interpenetrating polyurethane network based on polyalkylene glycols mixture: improving the physical, mechanical, and thermal properties. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-016-4010-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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30
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Takeichi T, Kawai T, Tsuchiya H. Morphology of Elastic and Plastic Poly(Urethane-Imide) Films Observed with TEM and FE-SEM. HIGH PERFORM POLYM 2016. [DOI: 10.1088/0954-0083/13/3/308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Direct observation of the morphology of poly(urethane-imide) films, prepared by the reaction of a polyurethane prepolymer and poly(amide acid) as a precursor of polyimide, was performed using transmission electron microscopy (TEM) and field emission scanning electron microscopy (FE-SEM). The poly(urethane-imide) films were plastic or elastic depending on the ratio of the two components. In the plastic films, TEM and FE-SEM analyses clearly showed the presence of urethane-rich domains in the imide-rich continuous phase. Under the higher magnification of TEM, a lamella structure was clearly observed inside the urethane-rich domains. The size and the number of the urethane-rich domains varied with the chemical structure and the ratio of the two components. It was confirmed that the size of the urethane-rich domains in the poly(urethane-imide) films observed with TEM and FE-SEM was almost the same as that of the pores in the porous polyimide films obtained by pyrolyzing the poly(urethane-imide) films at 300–400 °C. In the elastic films, imide-rich domains were clearly seen in the urethane-rich continuous phase by the FESEM observation.
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Affiliation(s)
- Tsutomu Takeichi
- School of Materials Science, Toyohashi University of Technology, Tempaku-cho, Toyohashi 441-8580, Japan
| | - Takeshi Kawai
- School of Materials Science, Toyohashi University of Technology, Tempaku-cho, Toyohashi 441-8580, Japan
| | - Hajime Tsuchiya
- Nittoh Technical Information Center, Shimo-hozumi, Ibaragi-city, Osaka 567-8680, Japan
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31
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Sahoo S, Kalita H, Mohanty S, Nayak SK. Synthesis of Vegetable Oil-Based Polyurethane: A Study on Curing Kinetics Behavior. INT J CHEM KINET 2016. [DOI: 10.1002/kin.21020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Swarnalata Sahoo
- Laboratory for Advanced Research in Polymeric Materials; LARPM; CIPET; Bhubaneswar 751 024 India
- Central Institute of Plastic Engineering and Technology (CIPET); Chennai 600 032 India
| | - Hemjyoti Kalita
- Laboratory for Advanced Research in Polymeric Materials; LARPM; CIPET; Bhubaneswar 751 024 India
| | - Smita Mohanty
- Laboratory for Advanced Research in Polymeric Materials; LARPM; CIPET; Bhubaneswar 751 024 India
- Central Institute of Plastic Engineering and Technology (CIPET); Chennai 600 032 India
| | - Sanjay K. Nayak
- Laboratory for Advanced Research in Polymeric Materials; LARPM; CIPET; Bhubaneswar 751 024 India
- Central Institute of Plastic Engineering and Technology (CIPET); Chennai 600 032 India
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32
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Behera PK, Usha KM, Guchhait PK, Jehnichen D, Das A, Voit B, Singha NK. A novel ionomeric polyurethane elastomer based on ionic liquid as crosslinker. RSC Adv 2016. [DOI: 10.1039/c6ra21650a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
A novel flexible polyurethane was prepared using ionic liquid as crosslinker. It showed lower Tg, superelastomeric behavior with very high elongation, better tensile and oil resistance properties than a non-ionic crosslinked PU or a linear PU.
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Affiliation(s)
| | - K. M. Usha
- Vikram Sarabhai Space Centre (ISRO)
- Thiruvananthapuram
- India
| | - P. K. Guchhait
- Vikram Sarabhai Space Centre (ISRO)
- Thiruvananthapuram
- India
| | - Dieter Jehnichen
- Leibniz-Institute of Polymer Research Dresden
- 01069 Dresden
- Germany
| | - Amit Das
- Leibniz-Institute of Polymer Research Dresden
- 01069 Dresden
- Germany
| | - Brigitte Voit
- Leibniz-Institute of Polymer Research Dresden
- 01069 Dresden
- Germany
| | - Nikhil K. Singha
- Rubber Technology Centre
- Indian Institute of Technology
- Kharagpur 721302
- India
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33
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Güngör Ö, Paşahan A, Cengiz MA, Köytepe S, Seçkin T. Fructose-Based Polyurethane Membranes: Synthesis, Characterization, and Their Use as Voltammetric pH Electrode. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2014.996705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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Lucio B, de la Fuente JL, Cerrada ML. Characterization of Phase Structures of Novel Metallo-Polyurethanes. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500238] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Beatriz Lucio
- Instituto Nacional de Técnica Aeroespacial “Esteban Terradas” (INTA).Ctra. de Ajalvir; Km. 4, Torrejón de Ardoz 28850 Madrid Spain
| | - José Luis de la Fuente
- Instituto Nacional de Técnica Aeroespacial “Esteban Terradas” (INTA).Ctra. de Ajalvir; Km. 4, Torrejón de Ardoz 28850 Madrid Spain
| | - María L. Cerrada
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC); Juan de la Cierva 3 28006 Madrid Spain
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35
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Abd El-Wahab H, Abd El-Fattah M, Ahmed AH, Elhenawy AA, Alian N. Synthesis and characterization of some arylhydrazone ligand and its metal complexes and their potential application as flame retardant and antimicrobial additives in polyurethane for surface coating. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.05.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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36
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Ates B, Koytepe S, Karaaslan MG, Balcioglu S, Gulgen S, Demirbilek M, Denkbas EB. Chlorogenic Acid Containing Bioinspired Polyurethanes: Biodegradable Medical Adhesive Materials. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2014.996710] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Emamikia M, Barikani M, Bakhshandeh G. Relationship between structure and aromatic solvent permeability of crosslinked polyurethanes based on hyperbranched polyesters. POLYM INT 2015. [DOI: 10.1002/pi.4882] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mohammad Emamikia
- Iran Polymer and Petrochemical Institute (IPPI); PO Box 14965/115 Tehran Iran
| | - Mehdi Barikani
- Iran Polymer and Petrochemical Institute (IPPI); PO Box 14965/115 Tehran Iran
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38
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Amela-Cortes M, Paofai S, Cordier S, Folliot H, Molard Y. Tuned red NIR phosphorescence of polyurethane hybrid composites embedding metallic nanoclusters for oxygen sensing. Chem Commun (Camb) 2015; 51:8177-80. [DOI: 10.1039/c5cc01867f] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Phosphorescent metallic clusters are functionalized and integrated in polyurethane by copolymerization. Solid state quantum yield measurements show a drastic and reversible enhancement of nanocomposite luminescence depending on its surrounding atmosphere.
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Affiliation(s)
- Maria Amela-Cortes
- Université de Rennes
- 1-CNRS UMR 6226 “Institut des Sciences Chimiques de Rennes”
- Campus de Beaulieu
- 35042 Rennes Cedex
- France
| | - Serge Paofai
- Université de Rennes
- 1-CNRS UMR 6226 “Institut des Sciences Chimiques de Rennes”
- Campus de Beaulieu
- 35042 Rennes Cedex
- France
| | - Stéphane Cordier
- Université de Rennes
- 1-CNRS UMR 6226 “Institut des Sciences Chimiques de Rennes”
- Campus de Beaulieu
- 35042 Rennes Cedex
- France
| | - Hervé Folliot
- Université Européenne de Bretagne
- INSA
- FOTON
- UMR 6082
- F-35708 Rennes
| | - Yann Molard
- Université de Rennes
- 1-CNRS UMR 6226 “Institut des Sciences Chimiques de Rennes”
- Campus de Beaulieu
- 35042 Rennes Cedex
- France
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39
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Synthesis and characterization of biocompatible polyurethanes for controlled release of hydrophobic and hydrophilic drugs. Front Chem Sci Eng 2014. [DOI: 10.1007/s11705-014-1451-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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40
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El-Wahab HA, El-Fattah MA, El-Khalik NA, Nassar HS, Abdelall MM. Synthesis and characterization of coumarin thiazole derivative 2-(2-amino-1,3-thiazol-4-yl)-3H-benzo[f]chromen-3-one with anti-microbial activity and its potential application in antimicrobial polyurethane coating. PROGRESS IN ORGANIC COATINGS 2014; 77:1506-1511. [DOI: 10.1016/j.porgcoat.2014.04.026] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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41
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Mingjie H, Wei F, Le G, Weibing W, Xinghai L, Chi H. One-pot synthesis of hyperbranched polyols and their effects as crosslinkers on HTPB-based polyurethane. Polym Bull (Berl) 2014. [DOI: 10.1007/s00289-014-1215-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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42
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Chaudhary S, Parthasarathy S, Kumar D, Rajagopal C, Roy PK. Graft-interpenetrating polymer networks of epoxy with polyurethanes derived from poly(ethyleneterephthalate) waste. J Appl Polym Sci 2014. [DOI: 10.1002/app.40490] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Saurabh Chaudhary
- Centre for Fire, Explosive and Environment Safety, DRDO; Timarpur Delhi 110054 India
- Department of Applied Chemistry and Polymer Technology; Delhi Technological University; Delhi 110042 India
| | - Surekha Parthasarathy
- Centre for Fire, Explosive and Environment Safety, DRDO; Timarpur Delhi 110054 India
| | - Devendra Kumar
- Department of Applied Chemistry and Polymer Technology; Delhi Technological University; Delhi 110042 India
| | - Chitra Rajagopal
- Centre for Fire, Explosive and Environment Safety, DRDO; Timarpur Delhi 110054 India
| | - Prasun Kumar Roy
- Centre for Fire, Explosive and Environment Safety, DRDO; Timarpur Delhi 110054 India
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43
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Ugarte L, Fernández-d'Arlas B, Valea A, González ML, Corcuera M, Eceiza A. Morphology-properties relationship in high-renewable content polyurethanes. POLYM ENG SCI 2013. [DOI: 10.1002/pen.23777] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- L. Ugarte
- “Materials + Technologies” Group, Department of Chemical and Environmental Engineering; Polytechnic School; University of the Basque Country (UPV/EHU); Pza Europa 1 20018 Donostia-San Sebastián Spain
| | - B. Fernández-d'Arlas
- “Materials + Technologies” Group, Department of Chemical and Environmental Engineering; Polytechnic School; University of the Basque Country (UPV/EHU); Pza Europa 1 20018 Donostia-San Sebastián Spain
| | - A. Valea
- Department of Chemical and Environmental Engineering; Technical Engineering College of Bilbao, University of the Basque Country (UPV/EHU); Paseo Rafael Moreno “Pitxitxi” 3 48013 Bilbao Spain
| | - M. L. González
- Department of Chemical and Environmental Engineering; Technical Engineering College of Bilbao, University of the Basque Country (UPV/EHU); Paseo Rafael Moreno “Pitxitxi” 3 48013 Bilbao Spain
| | - M.A. Corcuera
- “Materials + Technologies” Group, Department of Chemical and Environmental Engineering; Polytechnic School; University of the Basque Country (UPV/EHU); Pza Europa 1 20018 Donostia-San Sebastián Spain
| | - A. Eceiza
- “Materials + Technologies” Group, Department of Chemical and Environmental Engineering; Polytechnic School; University of the Basque Country (UPV/EHU); Pza Europa 1 20018 Donostia-San Sebastián Spain
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44
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Akram N, Gurney RS, Zuber M, Ishaq M, Keddie JL. Influence of Polyol Molecular Weight and Type on the Tack and Peel Properties of Waterborne Polyurethane Pressure-Sensitive Adhesives. MACROMOL REACT ENG 2013. [DOI: 10.1002/mren.201300109] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nadia Akram
- Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Robert S. Gurney
- Department of Physics; University of Surrey; Guildford Surrey GU2 7XH United Kingdom
| | - Mohammad Zuber
- Department of Applied Chemistry; Government College University; Faisalabad 38030 Pakistan
| | - Muhammad Ishaq
- Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Joseph L. Keddie
- Department of Physics; University of Surrey; Guildford Surrey GU2 7XH United Kingdom
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45
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Effect of total acrylic/fluorinated acrylic monomer contents on the properties of waterborne polyurethane/acrylic hybrid emulsions. Macromol Res 2013. [DOI: 10.1007/s13233-013-1122-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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46
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Gopala Krishnan PS, Ayyaswamy K, Nayak SK. Hydroxy Terminated Polybutadiene: Chemical Modifications and Applications. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2012. [DOI: 10.1080/10601325.2013.736275] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- P. Santhana Gopala Krishnan
- a Department of Plastics Technology , Central Institute of Plastics Engineering & Technology , Guindy , Chennai , India
| | - Kavitha Ayyaswamy
- a Department of Plastics Technology , Central Institute of Plastics Engineering & Technology , Guindy , Chennai , India
| | - S. K. Nayak
- a Department of Plastics Technology , Central Institute of Plastics Engineering & Technology , Guindy , Chennai , India
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Kausar A, Hussain ST. Physical and thermal properties of thermoplastic poly(azo-urethane)s. HIGH PERFORM POLYM 2012. [DOI: 10.1177/0954008312464255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
New thermoplastic segmented poly(azo-urethane)s (PAUs) have been synthesized by one-step polycondensation from aromatic diazo-diol, ( E)-1-(4-(4-(3-hydroxypyridyl-azo)thiocarbamoylaminobenzyl)-phenyl)-3-(3-hydroxypyridylazo)thiourea, as chain extenders, phenylene diisocyanate and 20–60 mol % polyethylene glycol (PEG) with the molecular weight of 2000 g/mol. The effect of diazo-diol used in the structure and some physicochemical, thermal and mechanical properties of the segmented polyurethanes were studied. The structure was examined by proton nuclear magnetic resonance (1H NMR) and Fourier-transform infrared spectroscopy (FTIR) analyses. Polyazos were the products with good processability and high molar mass in the range 120 × 103–135 × 103 g/mol. Thermal properties, investigated by thermogravimetric analysis and differential scanning calorimetry indicated that PAUs up to 40 mol % polyol were fairly stable above 530°C, having initial weight loss of around 528–539°C, 10% gravimetric loss in the range 553–567°C and own high glass transition temperature 259–264°C. The polymers also demonstrated higher tensile strength (56.53–63.83 MPa) and elongation at break (1.58–1.63). However, compared with typical polyurethanes, PAUs with lower polyol content displayed higher Tgs, heat and mechanical stability owing to warily designed rigid hard segment structure.
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Affiliation(s)
- Ayesha Kausar
- Nanosciences and Catalysis Division, National Centre For Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
| | - Syed Tajammul Hussain
- Nanosciences and Catalysis Division, National Centre For Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
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Kiran S, James NR, Jayakrishnan A, Joseph R. Polyurethane thermoplastic elastomers with inherent radiopacity for biomedical applications. J Biomed Mater Res A 2012; 100:3472-9. [DOI: 10.1002/jbm.a.34295] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Accepted: 05/17/2012] [Indexed: 11/10/2022]
Affiliation(s)
- S. Kiran
- Polymer Processing Laboratory, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Satelmond Palace Campus, Trivandrum 695 012, Kerala, India
| | - Nirmala R. James
- Indian Institute of Space Sciences and Technology, Trivandrum 695 022, Kerala, India
| | - A. Jayakrishnan
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Roy Joseph
- Polymer Processing Laboratory, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Satelmond Palace Campus, Trivandrum 695 012, Kerala, India
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Ducruet N, Delmotte L, Schrodj G, Stankiewicz F, Desgardin N, Vallat MF, Haidar B. Evaluation of hydroxyl terminated polybutadiene-isophorone diisocyanate gel formation during crosslinking process. J Appl Polym Sci 2012. [DOI: 10.1002/app.38194] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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50
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Rathi SR, Coughlin EB, Hsu SL, Golub CS, Ling GH, Tzivanis MJ. Effect of midblock on the morphology and properties of blends of ABA triblock copolymers of PDLA-mid-block-PDLA with PLLA. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.05.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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