Citation: Jin-hua Leng, Heng Liu, Bo-bing He, Bin Yang, Xian Chen, Qing-quan Qin. COMBINED EFFECT OF MODIFIED ZEOLITE 13X AND -NUCLEATING AGENT ON IMPROVING -CRYSTAL CONTENT AND TOUGHENING POLYPROPYLENE RANDOM COPOLYMER[J]. Chinese Journal of Polymer Science, ;2013, 31(11): 1563-1578. doi: 10.1007/s10118-013-1311-y shu

COMBINED EFFECT OF MODIFIED ZEOLITE 13X AND -NUCLEATING AGENT ON IMPROVING -CRYSTAL CONTENT AND TOUGHENING POLYPROPYLENE RANDOM COPOLYMER

Jin-hua Leng ¹ ,
Heng Liu ² ,
Bo-bing He ^1,, ,
Bin Yang ¹ ,
Xian Chen ¹ ,
Qing-quan Qin ³

1.
Polymer Physics and Chemistry, College of Chemistry, Sichuan University, Chengdu 610064, China
2.
Chengdu Product Quality Supervision and Inspection Institute, Chengdu 610041, China
3.
Kaixian Chenjia Middle School, Chongqing 405400, China

Corresponding author: Bo-bing He,
Received Date: 5 December 2012
Revised Date: 21 January 2013

Fund Project: This work was financially supported by the National Natural Science Foundation of China (No. 50803042) and Chengdu Economic Technological Development Zone and Chuanlu Group.

Although addition of -nucleating agent directly into homo-polypropylene (PPH) is a useful method to improve -crystal content and toughen PPH, polypropylene random copolymer (PPR) makes this method powerless due to its random structure and low crystallinity. In this study, the -nucleated PPR with high -crystal content was prepared by a novel high effective -nucleating system which consists of -nucleation agent (TMB-5) and modified zeolite 13X (M13X). It was found that M13X and TMB-5 had a synergistic influence on improving -crystal content and toughening PPR. The content of -crystal in PPR/M13X/TMB-5 was significantly larger than the sum of that in PPR/M13X and PPR/TMB-5. Besides, fracture behavior, phase morphology and relaxation of matrix chain segments were also investigated. The results showed that M13X and TMB-5 improved the mobility of amorphous chain segments at low temperature and contributed to much energy dissipation. This work provides a powerful method to modify PPR.
- Polypropylene random copolymer,
- Zeolite,
- -nucleating agent,
- Crystallization,
- Toughness
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