文献类型：期刊文献

英文题名：Influence of a novel β-nucleating agent on the structure, mechanical properties, and crystallization behavior of isotactic polypropylene

作者：Jiang, Changquan[1];Zhao, Shicheng[1];Xin, Zhong[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：28

期号：5

起止页码：610

外文期刊名：JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS

收录：;EI(收录号：20152300918401);WOS:【SCI-EXPANDED(收录号:WOS:000353465900002)】；

基金：This work was financially supported by National Natural Science Foundation of China (Grant No. 21106042), Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20110074120012), and "the Fundamental Research Funds for the Central Universities."

语种：英文

外文关键词：Polypropylene; -nucleating agent; mechanical properties; crystallization behavior; kinetics; morphology

摘要：A novel -nucleating agent of isotactic polypropylene (iPP), the potassium salt of 1,4,5,6,7,7-hexachlorobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid (CA-19), was found and its effects on the mechanical properties, content of -crystal, and crystallization behavior of iPP were investigated. The results showed the content of -crystals of nucleated iPP (k value) can reach 46.3% with 0.25wt% CA-19. The impact strength and crystallization peak temperature of nucleated iPP greatly increased. Compared with pure iPP, the impact strength of nucleated iPP shows two times increase, and the crystallization peak temperature (T-p) of nucleated iPP increased by 7 degrees C. The spherulite size of the nucleated iPP dramatically decreased compared with that of pure iPP. The Caze et al. method was used to investigate the nonisothermal crystallization kinetics of nucleated iPP and the crystallization activation energy was obtained by the Kissinger method.