文献类型：期刊文献

英文题名：The influence of crystal structures of nucleating agents on the crystallization behaviors of isotactic polypropylene

作者：Hou, Wei-Min[1,4]; Liu, Gang[1,4]; Zhou, Jian-Jun[1]; Gao, Xia[1]; Li, Yan[1]; Li, Lin[1]; Zheng, Shi[2]; Xin, Zhong[2]; Zhao, Li-Qun[3]

机构：[1]Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China;[2]E China Univ Sci & Technol, Coll Chem Engn, Shanghai 200237, Peoples R China;[3]Shenyang Inst Chem Technol, Coll Chem Engn, Liaoning 110021, Peoples R China;[4]Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China

年份：2006

卷号：285

期号：1

起止页码：11

外文期刊名：COLLOID AND POLYMER SCIENCE

收录：;EI(收录号：20064010144682);WOS:【SCI-EXPANDED(收录号:WOS:000240720400002)】；

语种：英文

外文关键词：isotactic polypropylene; nucleating agent; epitaxial growth; crystallization

摘要：The crystals of N, N'-dicyclohexyl-2,6-naphthalenedicarboxamide (DC26NDCA) and N,N'-dicyclohexyl-1,4-naphthalenedicarboxamide (DC14NDCA) were selected as nucleating agents to induce the crystallization of isotactic polypropylene (i-PP). The influence of the crystal structures of the nucleating agents on the crystallization behaviors and morphologies was studied by means of differential scanning calorimeter, wide-angle X-ray diffraction, polarized light microscopy, and atomic force microscopy (AFM). The results show that DC26NDCA is a selective beta-nucleating agent for the i-PP crystallization, while DC14NDCA only has a very weak alpha-nucleating effect for the i-PP crystallization. The dynamic growth processes reveal that i-PP crystals grow with different crystallization behaviors in the presence of the nucleating agents. The i-PP lamellar structures on the crystal surfaces of the nucleating agents were observed by AFM in details, which suggested that the nucleating agents induced the epitaxial growth of the i-PP lamellae.