Reinforcement of High Impact Polystyrene by Aramid Nanoparticle Fillers Prepared via an In situ Bottom-up Approach  

作　　者：Xiang-Jun Gong Zhi-Ping Zhao Chang-Mei Sun Ying Zhang Rong-Jun Qu Ying Wang 

机构地区：[1]School of Chemistry and Materials Science,Ludong University,Yantai 264025,China

出　　处：《Chinese Journal of Polymer Science》2024年第8期1167-1176,共10页高分子科学（英文版）

基　　金：financially supported by Innovation Project for graduate students of Ludong University(No.IPGS2024-058);the National Natural Science Foundation of China(Nos.52073135,51673089 and 51903114)。

摘　　要：In this work,aramid nanoparticles(ANPs)were prepared in dimethyl formamide(DMF)solution containing high impact polystyrene(HIPS)via a bottom-up approach.Transmission electron microscopy(TEM)images showed that the obtained ANPs were evenly distributed in the HIPS matrix without any agglomeration.Chemical composition of the ANPs,i.e.,poly(p-phenyl-p-phenylenediamine)(PPTA),was confirmed by Fourier transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS)and X-ray diffractometer(XRD).The ANP/HIPS composites,obtained after ethanol precipitation,were added to neat HIPS as fillers to fabricate ANP/HIPS composite sheets.The surface roughness and the glass transition temperature(T_g)of the sheets were characterized by atomic force microscope(AFM)and differential scanning calorimetry(DSC),respectively.Compared with neat HIPS,the mechanical properties of the composite sheet were significantly improved,and the Young's modulus increased from 246.55 MPa to 2025.12 MPa,the tensile strength increased from 3.07 MPa to 29.76 MPa,and the toughness increased from 0.32 N/mm^2 to 3.92 N/mm^2,with an increase rate of 721%,869%and 1125%,respectively.Moreover,the thermal stability of the composites improved with the increase in ANP content.

关 键 词：High impact polystyrene PPTA nanoparticle REINFORCE Mechanical property 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]