中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Effect of copolymerized ethylene unit on the crystallization behavior of poly(propylene-co-ethylene)s

文献类型:期刊论文

作者Wang S ; Yang DC
刊名polymer
出版日期2004
卷号45期号:22页码:7711-7718
关键词ISOTACTIC POLYPROPYLENE GAMMA-PHASE ISOTHERMAL CRYSTALLIZATION PROPYLENE COPOLYMER LAMELLAR MORPHOLOGY CO-POLYMERS FRACTIONS PROPENE MELT POLYETHYLENE
ISSN号0032-3861
通讯作者yang dc
中文摘要the crystallization behavior of two kinds of commercial poly(propylene-co-ethylene)s (ppe1, ppe2) with similar average molecular weight and molecular weight distribution, isotacticity and copolymerized ethylene unit content and their fractions was investigated by differential scanning calorimetry (dsc), transmission electron microscopy (tem) and polarized optical microscopy (pom) techniques. the results indicate that the ppe1 isothermally crystallized films possess thicker and less cross-hatched lamellar structure than those of the ppe2. as for the fractionated samples, the thin films of low temperature (less than or equal to 90 degreesc) fractions (ppe1-80, ppe2-80) of both ppe1 and ppe2 exhibit similar crystallization behavior, while for the high temperature ( greater than or equal to 95 degreesc) fractions (ppe1-108, ppe2-108), the crystalline morphology has marked differences. compared with ppe2-108, the ppe1-108 isothermally crystallized thin films possess thicker lamellae and less crosshatched lamellar structure, while for the fibrous crystal number, the former is less than that of the latter. the main reason to create the crystallization behavior differences between the two ppes and their fractions is due to the effect of molecular chain structure, i.e. the different distribution of copolymerized ethylene unit in polypropylene chains.
收录类别SCI
语种英语
WOS记录号WOS:000224497900035
公开日期2010-08-17
源URL[http://202.98.16.49/handle/322003/14745]  
专题长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
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GB/T 7714
Wang S,Yang DC. Effect of copolymerized ethylene unit on the crystallization behavior of poly(propylene-co-ethylene)s[J]. polymer,2004,45(22):7711-7718.
APA Wang S,&Yang DC.(2004).Effect of copolymerized ethylene unit on the crystallization behavior of poly(propylene-co-ethylene)s.polymer,45(22),7711-7718.
MLA Wang S,et al."Effect of copolymerized ethylene unit on the crystallization behavior of poly(propylene-co-ethylene)s".polymer 45.22(2004):7711-7718.

入库方式: OAI收割

来源:长春应用化学研究所

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