【摘要】 以甘油为塑化剂,制备了热塑性淀粉(TPS);利用自制的甘油基阴离子表面活性剂:(2-十六烷基羧酸酯)丙二羧酸钠(C)为增容剂,制备了PP/TPS/C共混材料,并对其力学性能、熔点、结晶温度、热稳定性、流变性能等进行了分析。结果表明,在100份的PP/TPS(70∶30)共混材料中加入2份C时,其力学性能和流变性能最好。拉伸强度由21.3MPa降至17.8MPa,断裂伸长率由9.3%升高至19.7%,提高了115%;流动性变好,表观粘度明显降低。由于增容剂是甘油基阴离子表面活性剂,其与增塑剂甘油、淀粉以及PP都能产生一定的相互作用,从而影响了共混材料的性能。更多还原

【Abstract】 The thermoplastic starch(TPS)was plasticized with 30wt% glycerol.One anionic surfactant 2-(palmitoyloxy)malonate disodium salt(C),which was prepared from glycerol,was used for compatibilizer in blends of PP/TPS/C.Their mechanical properties,melting points,crystallization temperatures,thermostability and rheological properties were analyzed.When added C was 2,i.e.,the PP/TPS/C(70/30/2)blends showed the best mechanical property and rheological property.In contrast to the blends without C,the tensile strength decreased from 21.3 MPa to 17.8 MPa,whereas the elongation at break increased from 9.3% to19.7%.The mobility of blends was improved obviously,revealed by the decreasing apparent viscosity.Due to the reactions of C-glycerol,C-starch granule and C-PP,the properties of blends were changed.更多还原