| 聚丙烯合金PP-c的晶相结构及形态 |
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| 引用本文： | 上官勇刚,郑强,彭懋.聚丙烯合金PP-c的晶相结构及形态[J].高分子学报,2005(3):389-392. |
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| 作者姓名： | 上官勇刚 郑强 彭懋 |
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| 作者单位： | 浙江大学高分子科学与工程学系,杭州,310027;浙江大学高分子科学与工程学系,杭州,310027;浙江大学高分子科学与工程学系,杭州,310027 |
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| 基金项目： | 国家杰出青年科学基金 (基金号 5 0 12 5 3 12 )，国家重点基础规划项目 (项目号G19990 64 80 3 )资助课题 |
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| 摘 要： | 用偏光显微镜和广角X射线衍射研究了聚丙烯合金PP c的结晶形态.发现PP -c的晶相结构中不仅存在α-晶型聚丙烯(α- PP ) ,也存在着β-晶型聚丙烯(β-PP) .计算了不同乙烯含量PP c的结晶度和β- PP含量.表明随着乙烯含量的增加,β- PP的含量增加,而PP- c的结晶度下降.通过与同等熔融结晶条件下等规聚丙烯(iPP)的结晶形态相比较,发现乙烯组分含量的增加,改变了球晶的生长状况,降低了PP- c晶相的晶体完整性.
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| 关 键 词： | 聚丙烯合金PP-c 结晶形态 球晶 |
| 修稿时间： | 2004年2月24日 |
A STUDY ON CRYSTALLINE STRUCTURE AND MORPHOLOGY FOR POLYPROPYLENE CATALLOYS |
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| SHANGGUAN Yonggang,ZHENG Qiang,PENG Mao.A STUDY ON CRYSTALLINE STRUCTURE AND MORPHOLOGY FOR POLYPROPYLENE CATALLOYS[J].Acta Polymerica Sinica,2005(3):389-392. |
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| Authors: | SHANGGUAN Yonggang ZHENG Qiang PENG Mao |
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| Abstract: | Crystalline morphology of polypropylene catalloys (PP-c)was studied by using polarized optical microscopy (POM)and wide-angle X-ray diffractio n (WAXD).It was found that β-PP existed,in addition to α-PP, in the c rystalline phase of PP-c.Crystallinity and the β-PP content for various P P-c were calculated.The results revealed that the content of β-PP increas ed with the increase of the ethylene content in PP-c,whereas the crystallinity of PP-c gradually decreased.Compared with the isotactic polypropylene (iPP) crystallized at the same condit ion,the increase of ethylene content resulted in the variation of spherulite gr owth and the decrease of crystalline perfection in PP-c. |
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| Keywords: | Polypropylene catalloys (PP-c) Crystalline structure and morphol ogy Spherulite |
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