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Vrška D, Urban M, Neogrády P, Pittner J, Blaško M, Pitoňák M. DFT Modeling of Polyethylene Chains Cross-linked by Selected ns 1 and ns 2 Metal Atoms. J Phys Chem A 2024; 128:7634-7647. [PMID: 39219502 DOI: 10.1021/acs.jpca.4c04755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
We analyze the structures, stabilities, and thermochemical properties of polyethylene (PE) oligomer chains cross-linked by metal (M) atoms through C-M-C bonds. Representative PEn-Mm-PEn complexes contain between 7 and 15 carbon atoms in each oligomer and one to three Li, Be, Mg, Zn, Ag, or Au cross-linking metal elements. PEn-Mm-PEn complexes are quasiplanar with nearly parallel PE chains. Their stability is determined by covalent C-M-C bonds accompanied by noncovalent dispersion interactions between PEn chains. Using the CAM-B3LYP+D3BJ+ABC functional, the binding energies of PE15-M-PE15 with respect to two PE15 radicals and metal fragments are -225, -230, -322, -551, -289, and -303 kJ/mol for Li, Ag, Au, Be, Mg, and Zn atoms, respectively. Entropy contributions (109 to 121 kJ/mol at 298.15 K) destabilize all complexes significantly. With two cross-linking metal elements in PE15-M2-PE15 complexes, binding energies are about double. Complexes with several open-shell Li, Ag, or Au doublet atoms have spins located on separated C-M-C bonds. High-spin PE15-Mm1-PE15-Mm2-PE15 complexes of three PE oligomers cross-linked by up to five doublet metal atoms create parallel PE tubes, which are suggested as elementary cells for modeling magnetic polymer tubes.
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Affiliation(s)
- Dávid Vrška
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Bratislava SK-84215, Slovakia
| | - Miroslav Urban
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Bratislava SK-84215, Slovakia
| | - Pavel Neogrády
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Bratislava SK-84215, Slovakia
| | - Jiří Pittner
- Jaroslav Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, Prague 8 CZ-18223, Czech Republic
| | - Martin Blaško
- Centre of Operations Computing Centre of SAS, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava SK-84535, Slovakia
| | - Michal Pitoňák
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Bratislava SK-84215, Slovakia
- Slovak National Supercomputing Centre, Dúbravská cesta 9, Bratislava SK-84104, Slovakia
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Biçer E, Kodal M, Özkoç G. Processing and Characterization of UV Irradiated HDPE/POSS Fibers. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:3131. [PMID: 38133028 PMCID: PMC10745762 DOI: 10.3390/nano13243131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/30/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Abstract
High-performance polyethylene fibers, renowned for their superior attributes encompassing a high strength, modulus, and lightness, are conventionally manufactured through the gel spinning method. However, this method is encumbered by several drawbacks, including the requisite application of a separate process to eliminate solvents from the fibers and the utilization of chemicals deleterious to both the environment and human health. Alternatively, the adoption of the melt spinning method presents a cleaner and environmentally friendly approach to attain high-performance fibers. In the present investigation, high-density polyethylene (HDPE) fibers were produced employing the melt spinning method. After the spinning process, strategic orientation procedures were implemented to enhance the crystallinity of the spun fibers. As a concluding step, seeking to elevate the overall performance of the oriented spun HDPE fibers, a cross-linking treatment was applied via UV irradiation. Notably, this study pioneers the incorporation of polyhedral oligomeric silsesquioxane (POSS) hybrid nanoparticles into HDPE during melt spinning, presenting a novel advancement aimed at further enhancing the mechanical properties of oriented HDPE fibers during UV irradiation. For this purpose, two distinct types of POSS, namely octavinyl POSS (OVPOSS) and methacryl POSS (MACPOSS), both having unsaturated double bonds capable of participating in the network structure of oriented HDPE spun during UV cross-linking, were used. The thermal, morphological, and mechanical properties, as well as the crystal structure of samples with and without POSS molecules, were investigated. The mechanical properties of the fibers exhibited higher values in the presence of OVPOSS. The incorporation of OVPOSS and MACPOSS resulted in a noteworthy improvement in the material's tensile strength, exhibiting a marked increase of 12.5 and 70.8%, respectively. This improvement can be attributed to the more homogeneous dispersion of OVPOSS in HDPE, actively participating in the three-dimensional network structure. After orientation and UV irradiation, the tensile strength of HDPE fibers incorporating OVPOSS increased to 293 MPa, accompanied by a concurrent increase in the modulus to 2.8 GPa. The addition of POSS nanoparticles thus yielded a substantial improvement in the overall performance of HDPE fibers.
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Affiliation(s)
- Ezgi Biçer
- Department of Chemical Engineering, Kocaeli University, 41001 Kocaeli, Turkey;
| | - Mehmet Kodal
- Department of Chemical Engineering, Kocaeli University, 41001 Kocaeli, Turkey;
- Nanotechnology Research and Application Center, Sabancı University, 34956 Istanbul, Turkey;
| | - Güralp Özkoç
- Nanotechnology Research and Application Center, Sabancı University, 34956 Istanbul, Turkey;
- Department of Chemistry, Istinye University, 34396 Istanbul, Turkey
- Xplore Instruments B.V., 6135 KT Sittard, The Netherlands
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3
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A novel alternative to free oil remediation and recovery: Foamy absorbents designed from low molecular paraffinic waste. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Blaško M, Pašteka LF, Urban M. DFT Functionals for Modeling of Polyethylene Chains Cross-Linked by Metal Atoms. DLPNO-CCSD(T) Benchmark Calculations. J Phys Chem A 2021; 125:7382-7395. [PMID: 34428051 DOI: 10.1021/acs.jpca.1c04793] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Density functional theory (DFT) functionals for calculations of binding energies (BEs) of the polyethylene (PE) chains cross-linked by selected metal atoms (M) are benchmarked against DLPNO-CCSD(T) and DLPNO-CCSD(T1) data. PEX-M-PEX complexes as compared with plain parallel PEX···PEX chains with X = 3-9 carbon atoms are model species characterized by a cooperative effect of covalent C-M-C bonds and interchain dispersion interactions. The accuracy of DLPNO-CC methods was assessed by a comparison of BEs with the canonical CCSD(T) results for small PE3-M-PE3 complexes. Functionals for PEX···PEX and closed-shell PEX-M-PEX complexes (M = Be, Mg, Zn) were benchmarked against DLPNO-CCSD(T) BEs; open-shell complexes (M = Li, Ag, Au) were benchmarked against the DLPNO-CCSD(T1) method with iterative triples. Three dispersion corrections were combined with 25 DFT functionals for calculations of BEs with respect to PEX-M and PEX fragments employing def2-TZVPP and def2-QZVPP basis sets. Accuracy to within 5% for the closed-shell PEX-M-PEX complexes was achieved with five functionals. Less accurate are functionals for the open-shell PEX-M-PEX complexes; only two functionals deviate by less than 15% from DLPNO-CCSD(T1). Particularly problematic were PEX-Li-PEX complexes. A reasonable overall performance across all complexes in terms of the mean absolute percentage error is found for the range-separated hybrid functionals ωB97X-D3 and CAM-B3LYP/D3(BJ)-ABC.
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Affiliation(s)
- Martin Blaško
- FunGlass, A. Dubček University of Trenčín, Študentská 2, 911 50 Trenčín, Slovakia
| | - Lukáš F Pašteka
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 84215 Bratislava, Slovakia
| | - Miroslav Urban
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 84215 Bratislava, Slovakia
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5
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Mechanical energy losses in commercial crosslinked low-density polyethylene in the temperature range between 200 and 400 K. J Appl Polym Sci 2019. [DOI: 10.1002/app.47605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Pilate F, Wen ZB, Khelifa F, Hui Y, Delpierre S, Dan L, Mincheva R, Dubois P, Yang KK, Raquez JM. Design of melt-recyclable poly(ε-caprolactone)-based supramolecular shape-memory nanocomposites. RSC Adv 2018; 8:27119-27130. [PMID: 35540004 PMCID: PMC9083248 DOI: 10.1039/c8ra03832e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 07/25/2018] [Indexed: 11/21/2022] Open
Abstract
A novel poly(epsilon-caprolactone) (PCL) supramolecular network exhibiting shape-memory behavior was successfully constructed with pendant UPy units that are highly able to dimerize. The dynamic network was obtained by a simple and versatile strategy consisting of chain-extension reaction between α,ω-dihydroxyoligoPCL and hydroxylated UPy units in the presence of hexamethylene diisocyanate as a coupling agent and further intermolecular dimerization of the UPy along the polyurethane backbone. 1H NMR analyses confirmed the dynamic features of the system, and DMTA in tensile mode was investigated to assess the SMP properties. Recyclability was also assessed by taking advantage of these supramolecular networks. Further addition of cellulose nanocrystals into the polymer network enabled adjustment of the extent of the net-points and therefore the SMP features. As confirmed by dispersion tests in solution and SEM observations, these bio-based nanofillers were homogeneously distributed in the network via supramolecular interaction between the hydroxyl groups present on their surface and UPy moieties along the polyurethane backbone. Thus, the here developed nanomaterials might reveal applicability in areas where a combination of SMP and biocompatibility is needed.
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Affiliation(s)
- Florence Pilate
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS) 23 Place du Parc 7000 Mons Belgium
| | - Zhi-Bin Wen
- Center for Degradable and Flame-Retardant Polymeric Materials (ERCEPM-MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University Chengdu Sichuan 610064 China
| | - Farid Khelifa
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS) 23 Place du Parc 7000 Mons Belgium
| | - Yan Hui
- Center for Degradable and Flame-Retardant Polymeric Materials (ERCEPM-MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University Chengdu Sichuan 610064 China
| | - Sebastien Delpierre
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS) 23 Place du Parc 7000 Mons Belgium
| | - Luo Dan
- Center for Degradable and Flame-Retardant Polymeric Materials (ERCEPM-MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University Chengdu Sichuan 610064 China
| | - Rosica Mincheva
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS) 23 Place du Parc 7000 Mons Belgium
| | - Philippe Dubois
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS) 23 Place du Parc 7000 Mons Belgium
| | - Ke-Ke Yang
- Center for Degradable and Flame-Retardant Polymeric Materials (ERCEPM-MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University Chengdu Sichuan 610064 China
| | - Jean-Marie Raquez
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS) 23 Place du Parc 7000 Mons Belgium
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7
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Blaško M, Mach P, Antušek A, Urban M. DFT Modeling of Cross-Linked Polyethylene: Role of Gold Atoms and Dispersion Interactions. J Phys Chem A 2018; 122:1496-1503. [DOI: 10.1021/acs.jpca.7b12232] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Martin Blaško
- Department
of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Pavel Mach
- Department
of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics
and Informatics, Comenius University, Mlynská Dolina, 84248 Bratislava, Slovakia
| | - Andrej Antušek
- Advanced
Technologies Research Institute, Faculty of Materials Science and
Technology in Trnava, Slovak University of Technology in Bratislava, Bottova 25, 917 24 Trnava, Slovakia
| | - Miroslav Urban
- Department
of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
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8
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Pilate F, Stoclet G, Mincheva R, Dubois P, Raquez JM. Poly(ε-caprolactone) and Poly(ω-pentadecalactone)-Based Networks with Two-Way Shape-Memory Effect through [2+2] Cycloaddition Reactions. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700345] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Florence Pilate
- Laboratory of Polymeric and Composite Materials (LPCM); Center of Innovation and Research in Materials and Polymers (CIRMAP); University of Mons - UMONS; Place du Parc 23 B-7000 Mons Belgium
| | - Gregory Stoclet
- Université de Lille Nord de France; UMR CNRS 8207; Unité Matériaux et Transformations; Université Lille1 Sciences et Technologies; Bâtiment C6 59655 Villeneuve d'Ascq France
| | - Rosica Mincheva
- Laboratory of Polymeric and Composite Materials (LPCM); Center of Innovation and Research in Materials and Polymers (CIRMAP); University of Mons - UMONS; Place du Parc 23 B-7000 Mons Belgium
| | - Philippe Dubois
- Laboratory of Polymeric and Composite Materials (LPCM); Center of Innovation and Research in Materials and Polymers (CIRMAP); University of Mons - UMONS; Place du Parc 23 B-7000 Mons Belgium
| | - Jean-Marie Raquez
- Laboratory of Polymeric and Composite Materials (LPCM); Center of Innovation and Research in Materials and Polymers (CIRMAP); University of Mons - UMONS; Place du Parc 23 B-7000 Mons Belgium
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9
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Liu H, Lv F, Li J, Cao T, Wan C, Zhang W, Li L, Zheng G, Shen C. Two-stage drawing process to prepare high-strength and porous ultrahigh-molecular-weight polyethylene fibers: Cold drawing and hot drawing. J Appl Polym Sci 2015. [DOI: 10.1002/app.42823] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hongli Liu
- Key Laboratory of Advanced Material Processing and Mold (Ministry of Education), College of Materials Science and Engineering; Zhengzhou University; Zhengzhou 450001 China
- National Synchrotron Radiation Laboratory and College of Nuclear Science and Technology, Chinese Academy of Sciences Key Laboratory of Soft Matter Chemistry; University of Science and Technology of China; Hefei 230029 China
| | - Fei Lv
- National Synchrotron Radiation Laboratory and College of Nuclear Science and Technology, Chinese Academy of Sciences Key Laboratory of Soft Matter Chemistry; University of Science and Technology of China; Hefei 230029 China
| | - Jing Li
- National Synchrotron Radiation Laboratory and College of Nuclear Science and Technology, Chinese Academy of Sciences Key Laboratory of Soft Matter Chemistry; University of Science and Technology of China; Hefei 230029 China
| | - Tian Cao
- National Synchrotron Radiation Laboratory and College of Nuclear Science and Technology, Chinese Academy of Sciences Key Laboratory of Soft Matter Chemistry; University of Science and Technology of China; Hefei 230029 China
| | - Caixia Wan
- National Synchrotron Radiation Laboratory and College of Nuclear Science and Technology, Chinese Academy of Sciences Key Laboratory of Soft Matter Chemistry; University of Science and Technology of China; Hefei 230029 China
| | - Wenhua Zhang
- National Synchrotron Radiation Laboratory and College of Nuclear Science and Technology, Chinese Academy of Sciences Key Laboratory of Soft Matter Chemistry; University of Science and Technology of China; Hefei 230029 China
| | - Liangbin Li
- National Synchrotron Radiation Laboratory and College of Nuclear Science and Technology, Chinese Academy of Sciences Key Laboratory of Soft Matter Chemistry; University of Science and Technology of China; Hefei 230029 China
| | - Guoqiang Zheng
- Key Laboratory of Advanced Material Processing and Mold (Ministry of Education), College of Materials Science and Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Changyu Shen
- Key Laboratory of Advanced Material Processing and Mold (Ministry of Education), College of Materials Science and Engineering; Zhengzhou University; Zhengzhou 450001 China
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10
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Yao Y, Jiang S, Rastogi S. 13C Solid State NMR Characterization of Structure and Orientation Development in the Narrow and Broad Molar Mass Disentangled UHMWPE. Macromolecules 2014. [DOI: 10.1021/ma402232c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yefeng Yao
- Department of Physics & Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, P. R. China
| | - Songzi Jiang
- Department of Physics & Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, P. R. China
| | - Sanjay Rastogi
- Department
of Materials, Loughborough University, Leicestershire, LE11 3TU, England, U.K
- Research
Institute, Teijin Aramid, Velperweg 76, 6802
ED Arnhem, The Netherlands
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11
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Liu SQ, Gong WG, Zheng BC. The Effect of Peroxide Cross-Linking on the Properties of Low-Density Polyethylene. J MACROMOL SCI B 2013. [DOI: 10.1080/00222348.2013.789360] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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Weng GS, Bao JB, Xu YC, Chen ZR. New insight into stretch induced structural evolution of α trans-1,4-polyisoprene characterized by real time synchrotron WAXS and SAXS measurements. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0104-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Reyes-Labarta JA, Marcilla A. Thermal Treatment and Degradation of Cross-Linked Ethylene Vinyl Acetate–Polyethylene–Azodicarbonamide–ZnO Foams. Complete Kinetic Modeling and Analysis. Ind Eng Chem Res 2012. [DOI: 10.1021/ie3006935] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. A. Reyes-Labarta
- Chemical Engineering Department, University of Alicante, Apdo. 99, Alicante E-03080, Spain
| | - A. Marcilla
- Chemical Engineering Department, University of Alicante, Apdo. 99, Alicante E-03080, Spain
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14
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Mechanical property tuning of semicrystalline network polymers by controlling rates of crystallization and crosslinking. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.25966] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Raquez JM, Vanderstappen S, Meyer F, Verge P, Alexandre M, Thomassin JM, Jérôme C, Dubois P. Design of cross-linked semicrystalline poly(ε-caprolactone)-based networks with one-way and two-way shape-memory properties through Diels-Alder reactions. Chemistry 2011; 17:10135-43. [PMID: 21744399 DOI: 10.1002/chem.201100496] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 05/10/2011] [Indexed: 11/08/2022]
Abstract
Cross-linked poly(ε-caprolactone) (PCL)-based polyesterurethane (PUR) systems have been synthesized through Diels-Alder reactions by reactive extrusion. The Diels-Alder and retro-Diels-Alder reactions proved to be useful for enhancing the molecular motion of PCL-based systems, and therefore their crystallization ability, in the design of cross-linked semicrystalline polymers with one-way and two-way shape-memory properties. Successive reactions between α,ω-diol PCL (PCL(2) ), furfuryl alcohol, and methylene diphenyl 4,4'-diisocyanate straightforwardly afforded the α,ω-furfuryl PCL-based PUR systems, and subsequent Diels-Alder reactions with N,N-phenylenedimaleimide afforded the thermoreversible cycloadducts. The cross-linking density could be modulated by partially replacing PCL-diol with PCL-tetraol. Interestingly, the resulting PUR systems proved to be semicrystalline cross-linked polymers, the melting temperature of which (close to 45 °C) represented the switching temperature for their shape-memory properties. Qualitative and quantitative measurements demonstrated that these PUR systems exhibited one-way and two-way shape-memory properties depending on their cross-linking density.
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Affiliation(s)
- Jean-Marie Raquez
- Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers, University of Mons, Place du Parc 20, 7000 Mons, Belgium.
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16
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Zwitterionic hydrogels crosslinked with novel zwitterionic crosslinkers: Synthesis and characterization. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.04.056] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Ishida K, Weibel V, Yoshie N. Substituent effect on structure and physical properties of semicrystalline Diels–Alder network polymers. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.04.038] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Cecen V. Thermophysical properties of composites formed from ethylene-vinyl acetate copolymer and silver-coated hollow glass microspheres. J Appl Polym Sci 2011. [DOI: 10.1002/app.33786] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Gul R, Islam A, Yasin T, Mir S. Flame-retardant synergism of sepiolite and magnesium hydroxide in a linear low-density polyethylene composite. J Appl Polym Sci 2011. [DOI: 10.1002/app.33767] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Characterization of networks from photoreactive copolymers: an attempt to correlate chemical composition to network structure. POLYM INT 2010. [DOI: 10.1002/pi.2901] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Ishida K, Nishiyama Y, Michimura Y, Oya N, Yoshie N. Hard−Soft Conversion in Network Polymers: Effect of Molecular Weight of Crystallizable Prepolymer. Macromolecules 2009. [DOI: 10.1021/ma901994v] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuki Ishida
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Yoshitake Nishiyama
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Yuta Michimura
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Nobuhiro Oya
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Naoko Yoshie
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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22
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Suljovrujic E. The influence of molecular orientation on the crosslinking/oxidative behaviour of iPP exposed to gamma radiation. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.03.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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23
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Reyes-Labarta JA, Marcilla A. Differential scanning calorimetry analysis of the thermal treatment of ternary mixtures of ethylene vinyl acetate, polyethylene, and azodicarbonamide. J Appl Polym Sci 2008. [DOI: 10.1002/app.28802] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Thermophysical properties of ethylene–vinylacetate copolymer (EVA) filled with wollastonite fibers coated by silver. Eur Polym J 2008. [DOI: 10.1016/j.eurpolymj.2008.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Ishida K, Yoshie N. Two-Way Conversion between Hard and Soft Properties of Semicrystalline Cross-Linked Polymer. Macromolecules 2008. [DOI: 10.1021/ma8008383] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kazuki Ishida
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Naoko Yoshie
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Shao C, An H, Wang X, Jia R, Zhao B, Ma Z, Li X, Pan G, Li L, Hong S. Deformation-Induced Linear Chain−Ring Transition and Crystallization of Living Polymer Sulfur. Macromolecules 2007. [DOI: 10.1021/ma071803a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chunguang Shao
- Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, China, and National Synchrotron Radiation Lab and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Haining An
- Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, China, and National Synchrotron Radiation Lab and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Xiao Wang
- Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, China, and National Synchrotron Radiation Lab and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Ru Jia
- Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, China, and National Synchrotron Radiation Lab and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Baijin Zhao
- Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, China, and National Synchrotron Radiation Lab and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Zhe Ma
- Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, China, and National Synchrotron Radiation Lab and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Xiangyang Li
- Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, China, and National Synchrotron Radiation Lab and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Guoqiang Pan
- Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, China, and National Synchrotron Radiation Lab and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Liangbin Li
- Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, China, and National Synchrotron Radiation Lab and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Shiming Hong
- Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, China, and National Synchrotron Radiation Lab and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
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Krupa I, Miková G, Novák I, Janigová I, Nógellová Z, Lednický F, Prokeš J. Electrically conductive composites of polyethylene filled with polyamide particles coated with silver. Eur Polym J 2007. [DOI: 10.1016/j.eurpolymj.2007.03.033] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Frediani M, Sémeril D, Comucci A, Bettucci L, Frediani P, Rosi L, Matt D, Toupet L, Kaminsky W. Ultrahigh-Molecular-Weight Polyethylene by Using a Titanium Calix[4]arene Complex with High Thermal Stability under Polymerization Conditions. MACROMOL CHEM PHYS 2007. [DOI: 10.1002/macp.200700075] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ding H, Tian Y, Wang L, Liu B. Preparation of ultrahigh-molecular-weight polyethylene membranes via a thermally induced phase-separation method. J Appl Polym Sci 2007. [DOI: 10.1002/app.26521] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kamel S, Adel AM, El-Sakhawy M, Nagieb ZA. Mechanical properties and water absorption of low-density polyethylene/sawdust composites. J Appl Polym Sci 2007. [DOI: 10.1002/app.26966] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Reyes-Labarta J, Olaya M, Marcilla A. DSC and TGA study of the transitions involved in the thermal treatment of binary mixtures of PE and EVA copolymer with a crosslinking agent. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.09.054] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Khonakdar HA, Jafari SH, Haghighi-Asl A, Wagenknecht U, Häussler L, Reuter U. Thermal and mechanical properties of uncrosslinked and chemically crosslinked polyethylene/ethylene vinyl acetate copolymer blends. J Appl Polym Sci 2006. [DOI: 10.1002/app.25268] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Effect of electron-irradiation on cross-link density and crystalline structure of low- and high-density polyethylene. Radiat Phys Chem Oxf Engl 1993 2006. [DOI: 10.1016/j.radphyschem.2005.05.014] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Teng C, Yu M. Grafting of multifunctional groups onto the surface of high-strength polyethylene fibers and the interface of their composites. J Appl Polym Sci 2005. [DOI: 10.1002/app.21715] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Suarez J, Elzubair A, Bonelli C, de Biasi R, Mano E. Correlation of Mechanical and Chemical Changes in Gamma-Irradiated Ultra-High Molecular Weight Polyethylene. JOURNAL OF POLYMER ENGINEERING 2005. [DOI: 10.1515/polyeng.2005.25.4.277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Busfield WK, Watson GS. Free radical activity in gamma-irradiated polyethylene film, drawn tape and ultra-high-modulus fibres determined by grafting performance. POLYM INT 2005. [DOI: 10.1002/pi.1807] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Luo C, Atvars TDZ, Meakin P, Hill AJ, Weiss RG. Determination of Initial and Long-Term Microstructure Changes in Ultrahigh Molecular Weight Polyethylene Induced by Drawing Neat and Pyrenyl Modified Films. J Am Chem Soc 2003; 125:11879-92. [PMID: 14505410 DOI: 10.1021/ja0362205] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Deformation processes in gel-crystallized ultrahigh molecular weight polyethylene (UHMWPE) films with draw ratios (DR) as high as 96 have been investigated by X-ray diffraction (XRD), differential scanning calorimetry (DSC), and positron annihilation lifetime spectroscopy (PALS). In addition, low concentrations of pyrene molecules have been introduced at the time of film preparation from the gels or afterward by sorption after film preparation, and the polarization of their electronic absorption and fluorescence spectra at different draw ratios has been measured over a large temperature range extending to below the glass transition. The pyrene-doped films have been irradiated to introduce covalently attached 1-pyrenyl groups, and these films at two draw ratios have been employed to investigate over large temperature ranges (1) the steady-state fluorescence intensity and (2) the rates of diffusion of N,N-dimethylaniline (DMA). These data have been correlated with the XRD, DSC, and PALS information obtained on the unmodified films. On the basis of analyses of this body of information, a novel deformation model that explains the decreased crystallinity and increased mean free volumes in gel-crystallized UHMWPE at low draw ratios is proposed. It involves "stretch" and "flip" motions of microfibrils present in the undrawn films. The high crystallinity content and stiffer chains due to drawing UHMWPE films result in weak alpha- and beta-relaxation processes, slower diffusion of DMA than in undrawn films, and orientation factors for doped pyrene molecules that are constant over a large temperature range. The overall picture that emerges allows several aspects of the morphology of UHMWPE, a polymer of fundamental importance in materials research, to be understood.
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Affiliation(s)
- Chuping Luo
- Department of Chemistry, Georgetown University, Washington, D.C. 20057-1227, USA
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Khonakdar H, Morshedian J, Wagenknecht U, Jafari S. An investigation of chemical crosslinking effect on properties of high-density polyethylene. POLYMER 2003. [DOI: 10.1016/s0032-3861(03)00363-x] [Citation(s) in RCA: 250] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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39
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Nakafuku C, Nishimura K. Mechanical properties of polyethylene mixtures crystallized under high pressure. J Appl Polym Sci 2003. [DOI: 10.1002/app.11601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Luo C, Guardala NA, Price JL, Chodak I, Zimerman O, Weiss RG. Structural and Dynamic Investigations of Unstretched and Stretched Ultrahigh Molecular Weight Polyethylene Films. 1-Pyrenyl Attachment by Bombardment with 4.5 MeV Protons and Irradiation with eV Range Photons. Macromolecules 2002. [DOI: 10.1021/ma020235q] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chuping Luo
- Department of Chemistry, Georgetown University, Washington, D.C., 20057-1227; Naval Surface Warfare Center, Carderock Division, 9500 MacArthur Boulevard, West Bethesda, Maryland 20817; and Polymer Institute, Slovak Academy of Sciences, 842 36 Bratislava, Slovak Republic
| | - Noel A. Guardala
- Department of Chemistry, Georgetown University, Washington, D.C., 20057-1227; Naval Surface Warfare Center, Carderock Division, 9500 MacArthur Boulevard, West Bethesda, Maryland 20817; and Polymer Institute, Slovak Academy of Sciences, 842 36 Bratislava, Slovak Republic
| | - Jack L. Price
- Department of Chemistry, Georgetown University, Washington, D.C., 20057-1227; Naval Surface Warfare Center, Carderock Division, 9500 MacArthur Boulevard, West Bethesda, Maryland 20817; and Polymer Institute, Slovak Academy of Sciences, 842 36 Bratislava, Slovak Republic
| | - Ivan Chodak
- Department of Chemistry, Georgetown University, Washington, D.C., 20057-1227; Naval Surface Warfare Center, Carderock Division, 9500 MacArthur Boulevard, West Bethesda, Maryland 20817; and Polymer Institute, Slovak Academy of Sciences, 842 36 Bratislava, Slovak Republic
| | - Oscar Zimerman
- Department of Chemistry, Georgetown University, Washington, D.C., 20057-1227; Naval Surface Warfare Center, Carderock Division, 9500 MacArthur Boulevard, West Bethesda, Maryland 20817; and Polymer Institute, Slovak Academy of Sciences, 842 36 Bratislava, Slovak Republic
| | - Richard G. Weiss
- Department of Chemistry, Georgetown University, Washington, D.C., 20057-1227; Naval Surface Warfare Center, Carderock Division, 9500 MacArthur Boulevard, West Bethesda, Maryland 20817; and Polymer Institute, Slovak Academy of Sciences, 842 36 Bratislava, Slovak Republic
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Baker DA, East GC, Mukhopadhyay SK. Mechanical and thermal properties of poly(ethylene terephthalate) fibers crosslinked with disulfonyl azides. J Appl Polym Sci 2001. [DOI: 10.1002/app.10044] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Krupa I, Luyt AS. Mechanical properties of uncrosslinked and crosslinked linear low-density polyethylene/wax blends. J Appl Polym Sci 2001. [DOI: 10.1002/app.1519] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Krupa I, Luyt A. Thermal and mechanical properties of LLDPE cross-linked with gamma radiation. Polym Degrad Stab 2001. [DOI: 10.1016/s0141-3910(00)00186-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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