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 |
| 推荐引用方式 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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