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- Title
Nucleation effects of zinc adipate as β-Nucleating agent in ethylene-propylene block copolymerized polypropylene.
- Authors
Yang, Yaoding; Xin, Zhong; Zhao, Shicheng; Shi, Yaoqi; Zhou, Shuai; Zhou, Jian; Ye, Chunlin
- Abstract
We report herein the discovery of zinc salt of adipic acid (Adi-Zn) as a highly efficient β-nucleating agent for block copolymerized polypropylene (PPB). The effects of Adi-Zn on the mechanical properties, the β-crystal content, and crystallization behavior of PPB were investigated, respectively. The results showed that the β-crystal content (k 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 °C and 59.1% at −20 °C,respectively. The crystallization peak temperature of PPB nucleated with Adi-Zn was increase by 10 °C and the spherulite size was greatly decreased than that of neat PPB. Differential fast scanning chip-calorimeter results revealed that the formation of β-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.
- Subjects
NUCLEATION; ZINC compounds; POLYPROPYLENE; NUCLEATING agents; ETHYLENE; BLOCK copolymers
- Publication
Journal of Polymer Research, 2017, Vol 24, Issue 9, p1
- ISSN
1022-9760
- Publication type
Article
- DOI
10.1007/s10965-017-1300-x