The effects of alkali dehydroabietate on the crystallization process of polypropylene
文献类型：期刊论文
| 作者 | Zhu, G; Li, CC; Li, ZY |
| 刊名 | EUROPEAN POLYMER JOURNAL
 |
| 出版日期 | 2001-05-01 |
| 卷号 | 37期号:5页码:1007-1013 |
| 关键词 | Polypropylene Alkali Dehydroabietate Nucleating Agent Crystallization |
| ISSN号 | 0014-3057 |
| 英文摘要 | The crystallization process of polypropylene (PP) with addition of a new kind of nucleating agent, alkali dehydroabietate, was studied. Two nucleated PP samples, PP-Nu-K and PP-Nu-Na, were used as matrices to monitor kinetics of crystallization process from the melt by differential scanning calorimeter and scanning electron microscope. Alkali dehydroabietate shortens crystallization half time t(1/2), and at 129 degreesC, t(1/2) was 410, 174, and 29 s for pure PP, PP-Nu-K, and PP-Nu-Na, respectively. At the same time, the fold surface energy a, of the developing crystals, however, increased and sigma (c) was 0.172 J/m(2) for pure PP, 0.183 J/m(2) for PP-Nu-K, and 0.202 J/m(2) for PP-Nu-Na. The increase in a, suggests nucleated PP having a smaller rate of crystal growth. SEM photographs show a much larger number of crystallization nuclei in PP-Nu-Na than in pure PP. The average volume of spherulites in pure PP is far greater than that in PP-Nu-Na. This indicates that alkali dehydroabietate can greatly increase the rate of crystallization of nucleated PP. (C) 2001 Elsevier Science Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000167625400019 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/76605]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, ZY |
| 作者单位 | Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, G,Li, CC,Li, ZY. The effects of alkali dehydroabietate on the crystallization process of polypropylene[J]. EUROPEAN POLYMER JOURNAL,2001,37(5):1007-1013. |
| APA | Zhu, G,Li, CC,&Li, ZY.(2001).The effects of alkali dehydroabietate on the crystallization process of polypropylene.EUROPEAN POLYMER JOURNAL,37(5),1007-1013. |
| MLA | Zhu, G,et al."The effects of alkali dehydroabietate on the crystallization process of polypropylene".EUROPEAN POLYMER JOURNAL 37.5(2001):1007-1013. |
入库方式： OAI收割
来源：化学研究所
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