摘要
利用反应挤出技术和红外光谱分析方法，对马来酸酐（MAH）接枝聚丙烯（PP）的制备工艺进行了研究。纯化后的马来酸酐接枝产物（PP—g—MAH）的红外光谱显示，在1700—1900cm^-1处出现吸收峰，这是马来酸酐的C=O键的特征吸收峰，说明马来酸酐接枝到了聚丙烯上。当MAH用量在1—9份（PP为100份）、过氧化二异丙苯（DCP）用量在0．2—0．4份范围内时，PP—g—MAH接枝率的变化规律如下：在一定量引发剂的作用下，随着马来酸酐用量的增加，聚丙烯接枝产物的接枝率有所增加；马来酸酐用量达到4份以后，聚丙烯接枝产物的接枝率不再明显增大；马来酸酐用量达到7份后，接枝率出现下降趋势。研究表明，聚丙烯树脂、马来酸酐单体和引发剂用量的质量比为100．0：4．0：0．3时，接枝效果较好，接枝率为0．84％。
The preparation process of maleic anhydride grafted polypropylene （PP-g-MAH） was studied by reactive extrusion using a twin screw extruder system and infrared spectroscopy. The structure of PP-g-MAH was characterized by FTIR spectrum. Result showed that there was an absorption peak at 1 700 - 1 900 cm^-1, the characteristic absorption peak of C = O bond of maleic acid anhydride （ MAH）, which showed that maleic anhydride had been grafted on the macromolecular chain of polypropylene （PP）. Factors influenced the graft ratio of maleic anhydride on PP was investigated. When the proportion of reaction mixture in the range of 1 -9 parts for MAH, 0.2 -0.4 parts for dicumyl peroxide （DCP） as initiator and 100 parts for PP, the amount of MAH had a remarkable effect on the graft ratio of PP-g-MAH. The graft ratio of PP-g-MAH increased with the amount of MAH increasing. When the amount of MAH reached to 4 parts, the graft ratio got to a high level and stopped increasing. While the amount of MAH reached to 7 parts, the graft ratio of PP-g-MAH showed a declining trend with the amount of MAH increasing. When the proportion of PP, MAH and DCP was 100/4/0.3, a better graft ratio （0.84%） could be achieved.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2006年第6期87-89,共3页
Journal of Northeast Forestry University
基金
国家高技术研究发展计划"863"项目(2002AA245141)
"948"项目(2001-01-2)。
关键词
接枝共聚
反应挤出
马来酸酐
聚丙烯
马来酸酐接枝聚丙烯
Graft eopolymerization
Reactive extrusion
Maleie anhydride
Polypropylene
Maleie anhydride grafted polypropylene
