Polymer Engineering and Science

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The role of specific interactions and transreactions on the compatibility of polyester ionomers with poly(ethylene terephthalate) and nylon 6,6
Polymer Engineering and Science - Tập 38 Số 10 - Trang 1658-1665 - 1998
Timothy L. Boykin, Robert B. Moore
AbstractThe compatibility of polyester ionomers with polar polymers (i.e., poly(ethylene terephthalate) and nylon 6,6) is under investigation for their potential use as minor component compatibilizers. Binary blends have been prepared by both solution and melt‐mixed methods to determine the effect of melt‐processing on blend compatibility. The effect of the sulfona...... hiện toàn bộ
Measurement of thermal conductivity of polymer melts by the line‐source method
Polymer Engineering and Science - Tập 30 Số 2 - Trang 65-70 - 1990
Hubert Lobo, Claude Cohen
AbstractAn apparatus has been developed for the measurement of thermal conductivity of polymer melts. Based on the transient “line source method,” it is ideally suited to these materials because measurements can be made quickly, before the onset of thermal degradation. Also, little or no sample preparation is required. A number of commercial polymers have been test...... hiện toàn bộ
The role of the interface in adhesion phenomena
Polymer Engineering and Science - Tập 17 Số 7 - Trang 467-473 - 1977
K. L. Mittal
AbstractThe role of the interface in adherend‐adherate combinations and in the strength of adhesive joints has been examined. For the former systems, practical adhesion (as determined experimentally, for example, by peel, tensile, or shear strengths) is a function of basic adhesion (determined by intermolecular, interactions such as van der Waals, electrostatic, or...... hiện toàn bộ
The design and performance of a new miniature mixer for specialty polymer blends and nanocomposites
Polymer Engineering and Science - Tập 44 Số 5 - Trang 868-879 - 2004
O. Breuer, Uttandaraman Sundararaj, Roger Toogood
AbstractA novel miniature mixer called the “Alberta Polymer Asymmetric Minimixer” (APAM) was designed, built and tested. In this study, polymer blends and nanofiber composites were compounded using a total of approximately 2 grams per sample. This mixer has a unique, asymmetric design consisting of a varying clearance between the rotor blade tips and the cup wall, ...... hiện toàn bộ
Rheological properties of structured fluids
Polymer Engineering and Science - Tập 34 Số 5 - Trang 438-445 - 1994
D. De Kée, C. F. Chan Man Fong
AbstractThe kinetic theory proposed by Soong and Liu for describing the rheological properties of structured fluids has been extended to predict shear‐thinning, shear‐thickening, thixotropy, and antithixotropy in different ranges of shear rates. Viscoelastic properties, as given by the Gordon‐Schowalter Maxwell model, with a non‐constant modulus, have also been con...... hiện toàn bộ
Flow and heat transfer simulation of injection molding with microstructures
Polymer Engineering and Science - Tập 44 Số 10 - Trang 1866-1876 - 2004
Liyong Yu, L. James Lee, Kurt W. Koelling
AbstractInjection molding has been used for mass production of polymer products with microstructures. Conventional Hele‐Shaw 2.5D midplane simulation is unable to describe the flow pattern correctly. It tends to over‐predict the effects of microstructures on global flow patterns. For the unidirectional flow, an x‐z planar based on the general momentum equation is a...... hiện toàn bộ
Preparation, structure, and properties of two‐phase co‐continuous polymer blends
Polymer Engineering and Science - Tập 28 Số 12 - Trang 796-805 - 1988
I.S. Miles, Andrew Zurek
AbstractPhase continuity has been explored as a function of composition for three two‐phase polymer blends produced by mixing in the melt: polystyrene/poly(methyl methacrylate), polystyrene/cis‐polybutadiene, and poly(methyl methacrylate)/ethylene‐propylene rubber. The condition for dual phase continuity Is the application of shear close to phase inversion and this...... hiện toàn bộ
An overview on properties and applications of poly(butylene adipate‐co‐terephthalate)–PBAT based composites
Polymer Engineering and Science - Tập 59 Số s2 - 2019
Filipe V. Ferreira, Luciana De Simone Cividanes, Rubia F. Gouveia, Liliane Maria Ferrareso Lona
There is growing interest in biodegradable polymers (BP), in particular poly(butylene adipate‐co‐terephthalate) (PBAT), due to environmental problems associated with the disposal of non‐biodegradable polymers into the environment. However, high production cost and low thermo‐mechanical properties restrict the use of this sustainable material, making its biodegrad...... hiện toàn bộ
Nanocomposites of PBAT and cellulose nanocrystals modified by in situ polymerization and melt extrusion
Polymer Engineering and Science - Tập 56 Số 12 - Trang 1339-1348 - 2016
Carolina Lipparelli Morelli, Mohamed Naceur Belgacem, Márcia Cristina Branciforti, Marie Christine Salon, Julien Bras, Rosário E. S. Bretas
Cellulose nanocrystals (CNC) were successfully grafted with a low molecular weight poly(butylene glutarate) through an in situ polymerization procedure. The grafting treatment decreased the CNC hydrophilic character and increased the onset of their thermal degradation by approximately 20°C, thus increasing the possibilities of CNC application. Composites of graft...... hiện toàn bộ
On the nonlinear characterization of the long term behavior of polymeric materials
Polymer Engineering and Science - Tập 27 Số 2 - Trang 144-148 - 1987
O. S. Brueller
AbstractIn the linear viscoelastic range the long term behavior of viscoelastic materials—such as polymers—can be described by using exponential series with a limited number of terms for the approximation of the relaxation modulus or of the creep compliance. This procedure can be extended to the nonlinear viscoelastic range by multiplying the linear parameters of t...... hiện toàn bộ
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