马来酸酐熔融接枝全同聚1-丁烯

Melt grafting of maleic anhydride onto isotactic poly(1-butene)

采用马来酸酐(MAH)熔融接枝全同聚1-丁烯,研究了MAH及第二单体苯乙烯(St)、复配引发剂、温度对接枝率的影响,用傅里叶变换红外光谱法表征接枝产物。结果表明:2种单体和复配引发剂用量对接枝率有较大影响,加入St提高了接枝率,引发剂过氧化二异丙苯与过氧化二苯甲酰质量比为3:1时接枝率最高,接枝率随着温度的升高而增大。

Maleic anhydride（MAH） was melt grafted onto isotactic poly（1-butene） （iPB） with a twin-screw extruder. The influences of MAH, styrene（St）, composite initiator and grafting temperature on the degree of grafting were investigated, and the resultant grafted polymer was characterized by means of Fourier transform infrared spectroscopy（FTIR）. The results indicate that the amounts of two monomers and composite initiator exert significant influence on the degree of grafting. The degree of grafting increases with the augmentaion of the St amount or the rise in the grafting temperature. The highest degree of grafting is attained when the mass ratio of dicumyl peroxide （DCP） to benzoyl peroxide （BPO） is 3 ： 1.