文献类型：期刊文献

英文题名：Nucleation effects of zinc adipate as β-Nucleating agent in ethylene-propylene block copolymerized polypropylene

作者：Yang, Yaoding[1];Xin, Zhong[1];Zhao, Shicheng[1];Shi, Yaoqi[1];Zhou, Shuai[1];Zhou, Jian[1];Ye, Chunlin[2]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Dept Prod Engn, Shanghai 200237, Peoples R China;[2]Shanghai Res Inst Chem Ind, Shanghai 200062, Peoples R China

年份：2017

卷号：24

期号：9

外文期刊名：JOURNAL OF POLYMER RESEARCH

收录：;EI(收录号：20173404074665);WOS:【SCI-EXPANDED(收录号:WOS:000408132700002)】；

基金：The authors gratefully acknowledge the financial support of this work by National Natural Science Foundation of China (Grants 21476085 and 21106042) and the Fundamental Research Funds for the Central Universities (222201717025).

语种：英文

外文关键词：nucleation property; beta-nucleating agent; block copolymerized polypropylene

摘要：We report herein the discovery of zinc salt of adipic acid (Adi-Zn) as a highly efficient beta-nucleating agent for block copolymerized polypropylene (PPB). The effects of Adi-Zn on the mechanical properties, the beta-crystal content, and crystallization behavior of PPB were investigated, respectively. The results showed that the beta-crystal content (k(beta) value) of nucleated PPB could reach up to 0.97 and maintain over 0.9 at the concentration range from 0.1 wt% to 1.0 wt%. Compared to neat PPB, the maximum impact strength of nucleated PPB increased by 50.0% at 25 degrees C and 59.1% at -20 degrees C, respectively. The crystallization peak temperature of PPB nucleated with Adi-Zn was increase by 10 degrees C and the spherulite size was greatly decreased than that of neat PPB. Differential fast scanning chip-calorimeter results revealed that the formation of beta-crystal strongly depends on the cooling rates during the crystallization. Finally, the Mo method was used to study the non-isothermal crystallization kinetics of neat PPB and nucleated PPB.