Water Absorption Characteristics of Different Polyamide Resins and Their Effects on the Diffusion and Polymerization of St Monomer

doi:10.7503/cjcu20180189

Abstract

Abstract: The water absorption characteristics of different polyamide resins and their effects on the diffusion and polymerization of styrene(St) monomers were studied. The results show that PS content of PA/PS nanoalloy increases with the increase of water content of PA pellets. The maximum PS contents of PA6, PA66 and MXD6 are 6.7%, 2.5% and 1.6%, respectively, under the conditions of difussion and polymerization at 90 ℃. Diffusion and subsequent polymerization of St occur in the amorphous regions of PA pellets, the PS nanoparticles ranging in size from 10 to 100 nm and distribute uniformly. Owing to the reinforcement effect of rigid PS particles to PA, the tensile strength and Young’s modulus of the PA/PS nanoalloy improved significantly.

Key words: Polyamide, Diffusion polymerization, Water absorption, Styrene

CLC Number:

O631

TrendMD:

TAN Yinle, HUANG Chenghuan, GUO Zhaoxia, YU Jian. Water Absorption Characteristics of Different Polyamide Resins and Their Effects on the Diffusion and Polymerization of St Monomer[J]. Chem. J. Chinese Universities, 2018, 39(12): 2825.

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