【摘要】 采用原位共混聚合法制得遇水崩解型聚苯乙烯(WDPS),对WDPS遇水崩解性能的影响因素进行了研究,包括聚丙烯酸钠(PAANa)高吸水树脂的粒径、吸水倍率,聚苯乙烯(PS)的分子量、表面活性剂Span-80等。结果表明:PAANa的粒径越小,越有利于WDPS的崩解;PAANa的吸水倍率在980g/g以上时,WDPS可以在72h内彻底崩解;PS重均分子量为1.3×105,既能使WDPS具有较好的崩解性能,又能使其保持一定的机械强度;表面活性剂Span-80含量占单体苯乙烯质量的3%时,WDPS崩解性能良好。更多还原

【Abstract】 Water-disintegrable polystyrenes(WDPS) blends was prepared by in-situ blending polymerization.The influence factors on water-disintegrative property of WDPS were studied,including particle size and water absorption rate of PAANa,molecular weight of PS,surfactant Span-80,and etc.The results show that:WDPS with smaller particle size of PAANa is easy to disintegrate;when the water absorption rate of PAANa is higher than 980g/g,WDPS will disintigrate completely within 72h;when the molecular weight of PS is1.3×105,the disintigrative property of WDPS is excellent,and the mechanical strength of it is also acceptable;when Span-80 content is 3% of monomer styrene,the distingrative property of WDPS is excellent.更多还原