文献类型：期刊文献

英文题名：Effects of halloysite nanotubes modified by organic phosphate on the performance improvement for polypropylene

作者：Deng, Zhaopeng[1,2];Meng, Xin[1,2,4,5];Li, Chenyang[1,2];Yao, Zhongyang[1,2];Gong, Weiguang[3]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, Prod Engn Dept, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, Res & Dev Ctr Sports Mat, Shanghai, Peoples R China;[4]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Sch Chem Engn, Prod Engn Dept, Shanghai 200237, Peoples R China

年份：2023

卷号：140

期号：19

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20230613563857);WOS:【SCI-EXPANDED(收录号:WOS:000930563300001)】；

基金：ACKNOWLEDGMENTS This work was financially supported by National Natural Science Foundation of China (No. 21576086). The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：compatibility; halloysite nanotubes; isotactic polypropylene; modification

摘要：The enhancement of halloysite nanotubes (HNT) for polymer mechanical performance is limited due to the poor compatibility with matrix. In this work, hydrophobic 2,2'-methylene-bis-(4,6-di-tert-butylphenyl) organic phosphate (MBP) with multiple methyl groups was firstly used for HNT compatibilization modification. The hydrophobicity transition of modified HNT (HNT-M) and the dispersibility difference in isotactic polypropylene (iPP) matrix were distinguished by water contact angle and SEM analyses, respectively. In addition, the binding energy evaluated the interfacial interaction and compatibility with matrix before and after modification by molecular dynamic simulation. Correspondingly, the iPP performance was optimized after addition of HNT-M. The onset decomposition temperature of system at 5% and 10% weight loss was increased by 7 and 11? compared with neat iPP, respectively. Moreover, the flexural modulus and impact strength of iPP/HNT-M system were 18.9% and 9.6% higher than neat iPP showing simultaneous enhancement. In addition, iPP/HNT-M system crystallized begin at higher temperature showing enhanced crystallization ability. Furthermore, the faster crystallization process and more uniform spherulite size were obtained. As a result, the enhancement for iPP performance was obtained when the compatibility between HNT and matrix was improved through surface modification.