Writer：Wu Wei, Li Na, Pu Wei-guang, Zhao Jun-zheng, Wu Zhi-yong, Xia Jin-kui

Publication：CHINA PLASTICS INDUSTY, 2008, 36：158-161

Abstract: PSBS/PS/Ultrafine-CaCO3 themolastmoer was prepared by using polar-SBS (PSBS). The processability and mechanical properties of the prepared themolastmoer were studied; the effects of ultrafine-CaCO3 with or without dispersant on the themolastmoer property were compared, and the morphology of the themolastmoer were observed. The results showed the processability of PSBS was effectively enhanced by blending with PS. The tensile strength and bending strength of PSBS/PS themolastmoer was improved with the increase of the content of PS because of the good compatibility of their common “S” section and the “physical crosslinking” formed between PB chains and PS chains. The tensile strength and bending strength of PSBS/PS were evidently enhanced by the addition of ultrafine-CaCO3, and the reinforcement effect was even better when the ultrafine-CaCO3 was treated with dispersant. When the mass fraction of PS 30%-40% and that of ultrafine-CaCO3 was 25%-30%, the combined properties of PSBS/PS ultrafine-CaCO3 themolastmoer were admirable.