中文摘要：

研究了在双螺杆挤出机中,苯乙烯（St）存在下马来酸酐（MAH）熔融接枝高全同聚丁烯-1（iPB-1）的过程。分别考察了温度、MAH和St用量对接枝率和熔体流动速率（MFR）的影响。结果表明,双螺杆挤出机反应区的适宜温度为170℃,在此温度下,MAH含量到5%时,接枝率达到最大;MAH含量一定时,MAH∶St=1∶1时两种单体可以较好地相互作用,并在引发剂的作用下优先生成苯乙烯与马来酸酐的共聚物（SMA）,然后再与iPB-1大分子链自由基或链端自由基发生反应,生成接枝物,此时接枝率达到最大。

英文摘要：

In the presence of styrene （St）,the melting-grafting of maleic anhydride （MAH） onto poly（1-butene） was conducted in twins screw extruder respectively.The effects of temperature,mass fraction of comonomer,proportion of comonomers on the graft ratio and the melt flow rate （MFR） of grafted iPB-1 were studied.It has been proved that the grafting degree begins to decrease after the temperature reaches 170 ℃,and the greater MAH grafting level is attained when the mass fraction of MAH reaches 5%.The grafting degree and MFR of the grafted iPB-1 both reach maximum points when molar ratio of the two monomers is 1：1.