Effects of Branching on the Pressure-Volume-Temperature Behaviors of PP/CO2 Solutions

被引：39

作者：

Li, Y. G. ^{[1
]}

Park, C. B. ^{[1
]}

机构：

[1] Univ Toronto, Dept Mech & Ind Engn, Microcellular Plast Mfg Lab, Toronto, ON M5S 3G8, Canada

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2009年 / 48卷 / 14期

关键词：

STYRENE-ACRYLONITRILE COPOLYMER; EQUATION-OF-STATE; STATISTICAL THERMODYNAMICS; MICROCELLULAR FOAMS; TENSILE TOUGHNESS; POLYPROPYLENE; POLYMERS; SORPTION; DENSITY; POLYCARBONATE;

D O I：

10.1021/ie8015279

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The pressure-volume-temperature (PVT) properties of polymer/gas Solutions are characterized by determining their volume dilation at a known temperature and pressure. This paper presents the results of an experiment that measured the volume swelling of linear and branched polypropylene (PP) with CO2 using a new PVT measurement apparatus. The swellings and specific volumes for linear and branched PP/CO2 are compared. The swelling mechanism that Occurred due to CO2 dissolution, and the effects of the branched structure on Volume swelling are investigated and discussed. Due to its entangled branch structure, the branched PP underwent a lesser degree Of Volume swelling than did the linear PP.

引用

页码：6633 / 6640

页数：8

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