Fractionation and Analysis of an Impact Poly(propylene) Copolymer by TREF and SEC-FTIR

被引：46

作者：

de Goede, Elana ^{[1
]}

Mallon, Peter ^{[1
]}

Pasch, Harald ^{[1
]}

机构：

[1] Univ Stellenbosch, Dept Chem & Polymer Sci, ZA-7602 Matieland, South Africa

来源：

MACROMOLECULAR MATERIALS AND ENGINEERING | 2010年 / 295卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

FTIR; ICPP copolymer; size-exclusion chromatography; temperature-rising elution fractionation; ETHYLENE-PROPYLENE COPOLYMERS; RISING ELUTION FRACTIONATION; SEQUENCE DISTRIBUTIONS; PHASE MORPHOLOGY; C-13; NMR; TEMPERATURE; BLOCK; POLYPROPYLENE; CHROMATOGRAPHY; IR;

D O I：

10.1002/mame.200900336

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TREF fractionation was combined with SEC-FTIR analysis to measure the compositional heterogeneity within a commercial impact PP copolymer. The chemical composition of all fractions was determined as function of their molecular weight distribution. This approach proved to be highly successful at identifying different constituents within fractions exhibiting bimodal molecular weight distributions. Furthermore, the determination of ethylene and propylene crystallinity distribution across the molecular weight distribution confirmed the morphological nature of each of the components of the bimodal distribution. It is demonstrated that the combination of TREF and SEC-FTIR provides a simple alternative to more time-consuming conventional ways of characterising impact PP copolymers of complex heterogeneity.

引用

页码：366 / 373

页数：8

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