摘要
利用单螺杆挤出机研究聚丙烯的多组分极性单体熔融接枝，从而改善和提高聚丙烯的极性。红外和熔体流动速率的结果表明，对于单组分接枝体系，在适当的反应条件下，甲基丙烯酸缩水甘油酯、甲基丙烯酸羟乙酯等极性单体均可以接枝在聚丙烯上，但同时也伴随着较严重的聚丙烯降解。而采用多组分单体接枝体系，通过加入甲基丙烯酸缩水甘油酯和苯乙烯单体，或甲基丙烯酸羟乙酯和苯乙烯单体，能够有效地控制聚丙烯的降解，大幅度提高接枝率，从而提高了聚丙烯的表面极性，同时又保持了聚丙烯的机械力学性能。
In this work, melt grafting of glycidyl methacrylate (GMA) and hydroxy ethyl methacrylate (HEMA) monomer onto polypropylene(PP) by using single screw extruder was studied. First, single monomer grafting system was investigated. Because of β-scission of PP chains themselves during the grafting process, the degradation of PP was extensive. However, in Multi monomers grafting system, the addition of a second monomer, styrene, in the grafting process can enhance GMA(HEMA) grafting onto PP further and reduce chains scission. Therefore, PP can be not only given the high polarity, but also kept its good mechanical properties.
出处
《功能高分子学报》
CAS
CSCD
1998年第1期111-116,共6页
Journal of Functional Polymers
关键词
聚丙烯
熔融接枝
极性
表面极性
性能
Polypropylene, Melt grafting, Glycidyl methacrylate, Hydroxy ethyl methacrylate, Styrene
