writer：Jianxiang Chen, Qiaolian Lv, Defeng Wu,* Xin Yao, Jun Wang, Zhaoshun Li
keywords：thermoplastic polyester elastomer; nano-silica; crystallization; nucleation.
source：期刊
specific source：Industrial & Engineering Chemistry Research
Issue time：2016年

Industrial & Engineering Chemistry Research, 2016, 55, 5279-5286.

ABSTRACT:

Crystallization control of the hard polyester segments is an important way to design final properties of thermoplastic polyester elastomer (TPEE). In this work, the crystallization behavior of TPEE with nano-silica as the nucleating agents were studied. Three kinds of nano-silica with various sizes and surface treatments were chosen for the nucleation design. The results reveal that all types nano-silica have evident nucleating effect, leading to a remarkable increase of crystallization temperature of TPEE even by about 30 ^oC. However, the overall crystallization process is highly dependent on the particle size and surface treatment of silica because it is closely related to the nucleation ability of particles and alteration of system viscosities. The crystallization temperature of TPEE is more sensitive to the surface treatment of silica, while its crystallization rate shows higher dependence on the particle size of silica. This work provides a facile way to well tailor crystallization of TPEE.

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http://pubsdc3.acs.org/doi/full/10.1021/acs.iecr.5b04464