Modeling the non-isothermal viscoelastic response of glassy polymers
Sign Up to like & getrecommendations! Published in 2018 at "Acta Mechanica"
DOI: 10.1007/s00707-017-2053-7
Abstract: Experimental data are reported on polycarbonate in tensile tests with a constant strain rate and relaxation tests in a wide range of temperatures. It is demonstrated that the growth of temperature results in a decrease… read more here.
Keywords: glassy polymers; relaxation; non isothermal; response glassy ... See more keywords
A finite strain thermodynamically-based constitutive modeling and analysis of viscoelastic-viscoplastic deformation behavior of glassy polymers
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Plasticity"
DOI: 10.1016/j.ijplas.2019.06.013
Abstract: Abstract In elastic and plastic deformation of glassy polymers and with the increase of deformation, the material would exhibit elastic, viscoelastic, and viscoelastic-viscoplastic (VE-VP) responses in sequence. These deformation behaviors should be constitutively modeled in… read more here.
Keywords: strain; deformation behavior; deformation; glassy polymers ... See more keywords
Enthalpy of sorption by glassy polymers
Sign Up to like & getrecommendations! Published in 2019 at "Polymer"
DOI: 10.1016/j.polymer.2019.04.051
Abstract: Abstract Thermodynamics and molecular mechanisms of sorption of gases and liquids by glassy polymers and are still not fully understood. In particular, the enthalpy of sorption (or mixing) in the glassy state – a parameter… read more here.
Keywords: sorption; sorption glassy; glassy polymers; enthalpy sorption ... See more keywords
All-atom molecular dynamics study of impact fracture of glassy polymers. I: Molecular mechanism of brittleness of PMMA and ductility of PC
Sign Up to like & getrecommendations! Published in 2019 at "Polymer"
DOI: 10.1016/j.polymer.2019.121570
Abstract: Abstract Molecular mechanism of brittle and ductile impact fractures of glassy polymers has been investigated. We performed atomistic molecular dynamics (MD) calculations for two glassy polymers, brittle poly(methyl methacrylate) (PMMA) and ductile polycarbonate (PC) using… read more here.
Keywords: molecular mechanism; fracture; molecular dynamics; pmma ... See more keywords
Crazing and yielding in glassy polymers of high molecular weight
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DOI: 10.1016/j.polymer.2020.122445
Abstract: Abstract This feature article presents many experimental results in order to explain and advance our understanding on crazing during tensile deformation of glassy polymers. Ample data are presented to show that crazing is an activated… read more here.
Keywords: glassy polymers; yielding glassy; extension; crazing yielding ... See more keywords
Mechanical properties of glassy polymers with controlled NP spatial organization
Sign Up to like & getrecommendations! Published in 2020 at "Polymer Testing"
DOI: 10.1016/j.polymertesting.2020.106640
Abstract: Abstract Industrially viable processes enabling effective control of nanoparticle (NP) spatial organization in polymers are vitally important for achieving potential of nano-composites as building blocks of dynamic composites. Here, we report on the small and… read more here.
Keywords: spatial organization; glassy polymers; properties glassy; polymer ... See more keywords
Mitigation of Physical Aging of Polymeric Membrane Materials for Gas Separation: A Review
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DOI: 10.3390/membranes13050519
Abstract: The first commercial hollow fiber and flat sheet gas separation membranes were produced in the late 1970s from the glassy polymers polysulfone and poly(vinyltrimethyl silane), respectively, and the first industrial application was hydrogen recovery from… read more here.
Keywords: gas; physical aging; membrane materials; gas separation ... See more keywords
Gas Transport in Glassy Polymers: Prediction of Diffusional Time Lag
Sign Up to like & getrecommendations! Published in 2018 at "Membranes"
DOI: 10.3390/membranes8010008
Abstract: The transport of gases in glassy polymeric membranes has been analyzed by means of a fundamental approach based on the nonequilibrium thermodynamic model for glassy polymers (NET-GP) that considers the penetrant chemical potential gradient as… read more here.
Keywords: glassy polymers; diffusional time; time; time lag ... See more keywords