Topic
Polymer blend
About: Polymer blend is a research topic. Over the lifetime, 18474 publications have been published within this topic receiving 437183 citations. The topic is also known as: polymer mixture & Polymerblend 或者 Polyblend.
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TL;DR: Hybrid polymer latexes as mentioned in this paper are colloidal dispersions in which at least two distinct polymers exist within each particle and the two polymers may form a homogenous blend within the particle or micro-phase separation may occur.
103 citations
TL;DR: In this paper, ternary composites of polypropylene (PP), elastomer, and calcium carbonate (CaCO3) filler were prepared to study their structure/property relationships.
Abstract: Ternary composites of polypropylene (PP), elastomer, and calcium carbonate (CaCO3) filler were prepared to study their structure/property relationships. Two kinds of phase structure were formed, depending on the elastomer present in the composites. Separation of elastomer and filler particles was found when a nonpolar ethylene–octene copolymer was used. Encapsulation of filler by the elastomer was achieved by using a polar ethylene–vinyl acetate elastomer. The mechanical properties of ternary composites were strongly dependent on material composition and their phase structures. In the present study, composites with separate dispersion structure showed higher modulus and impact strength than those of encapsulation type. The deformation mechanisms of both composites were studied using scanning electron microscopy. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 76: 1929–1939, 2000
103 citations
TL;DR: In this paper, a blend of a natural polymer, chi-tosan, with a synthetic polymer, polyvinyl alcohol (PVA), was prepared by solution casting and crosslinked with a urea formaldehyde/sulfuric acid (UFS) mixture.
Abstract: Blend membranes of a natural polymer, chi- tosan, with a synthetic polymer, poly(vinyl alcohol) (PVA), were prepared by solution casting and crosslinked with a urea formaldehyde/sulfuric acid (UFS) mixture. Chitosan was used as the base component in the blend system, whereas PVA concentration was varied from 20 to 60 wt %. Blend compatibility was studied by differential scanning cal- orimetry, and Fourier transform infrared spectroscopy was used to study membrane crosslinking. Membranes were tested for pervaporation dehydration of isopropanol and tet- rahydrofuran (THF) at 308C in close proximity to their azeo- tropic compositions. Membrane performance was assessed by calculating flux and selectivity. Swelling experiments per- formed in water þ organic mixtures at 308C were used to explain the pervaporation results. The blend membrane con- taining 20 wt % PVA when tested for 5 and 10 wt % water- containing THF and isopropanol feeds exhibited selectivity of 4203 and 17,991, respectively. Flux increased with increas- ing concentration of water in the feed. Selectivity was high- est for the 20 wt % PVA-containing blend membrane. The results of this study are unique in the sense that the cross- linking agent used—the UFS mixture—was novel. 2006
103 citations
Patent•
IBM1
TL;DR: In this paper, the authors describe a process for making a foamed polymer, which involves dispersing thermally degradable solid particles in polymer precursor, crosslinking the polymer precursor to form a rigid, crosslinked polymer without degrading the particles; and heating the polymer to degrade the particles and form the polymer foam.
Abstract: The invention relates to a process for making a foamed polymer. The process involves (a) dispersing thermally degradable solid particles in polymer precursor; (b) crosslinking the polymer precursor to form a rigid, crosslinked polymer without degrading the particles; and (c) heating the polymer to degrade the particles and form the polymer foam.
103 citations
TL;DR: Two types of O-carboxymethylated chitosan (O-CMCh)/cellulose polyblends were prepared by mixing cellulose LiCl/N,N-dimethylacetamide (DMAc) solution with O-CM ch aqueous solution (I) or DMAc emulsion (II) and their corresponding films were regenerated in water as mentioned in this paper.
103 citations