The size and number of local free volumes in polypropylenes: A positron lifetime and PVT study

被引：14
作者：
Kilburn, D
Bamford, D
Dlubek, G
Pionteck, J
Alam, MA
机构：
[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England
[2] ITA Inst Innovat Technol GmbH, D-06120 Halle An Der Saale, Germany
[3] Inst Polymerforsch Dresden eV, D-01069 Dresden, Germany
来源：
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 2003年 / 41卷 / 23期
关键词：
thermal properties; glass transition; poly(propylene);
D O I：
10.1002/polb.10621
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The temperature dependence of the mean size of local free volumes in an amorphous atactic (aPP) and a semicrystalline syndiotactic polypropylene (sPP), and an amorphous ethylene-propylene copolymer (E-co-P48) has been studied. Pressure-volume-temperature (PVT) experiments were performed for aPP, from which the hole fraction h of the Simha-Someynsky theory and the number density of holes were estimated. (C) 2003 Wiley Periodicals, Inc.
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收藏
页码：3089 / 3093
页数：5
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