CAJ | 학술논문

考察了氧化聚丙烯(OPP)的存储条件,研究了共单体苯乙烯(St)、二乙烯苯(DVB)和季戊四醇三丙烯酸酯(PETA)对马来酸酐(MAH)固相接枝 OPP 的影响,并利用傅里叶变换红外光谱(FT-IR)对接枝物结构加以表征.实验结果表明,随存放时间增加氢过氧化物含量呈现先快后慢的下降趋势,保护气氛和温度对 OPP 储存均能产生一定的影响;St、DVB和 PETA 对 MAH 接枝 OPP 均具有明显的改善作用,MAH 的接枝效率分别达到74.80%、94.31%、76.33%,并且加入St、PETA 的接枝物凝胶率远远低于加入 DVB 的接枝物.FT-IR 分析表明,MAH 和共单体与 OPP 发生了接枝共聚反应,多官能团共单体 PETA 的 C=C 双键部分参与了接枝反应,DVB 的乙烯基则反应比较完全.
고찰료양화취병희(OPP)적존저조건,연구료공단체분을희(St)、이을희분(DVB)화계무사순삼병희산지(PETA)대마래산항(MAH)고상접지 OPP 적영향,병이용부리협변환홍외광보(FT-IR)대접지물결구가이표정.실험결과표명,수존방시간증가경과양화물함량정현선쾌후만적하강추세,보호기분화온도대 OPP 저존균능산생일정적영향;St、DVB화 PETA 대 MAH 접지 OPP 균구유명현적개선작용,MAH 적접지효솔분별체도74.80%、94.31%、76.33%,병차가입St、PETA 적접지물응효솔원원저우가입 DVB 적접지물.FT-IR 분석표명,MAH 화공단체여 OPP 발생료접지공취반응,다관능단공단체 PETA 적 C=C 쌍건부분삼여료접지반응,DVB 적을희기칙반응비교완전.
The storage condition of oxidized polypropylene (OPP) was investigated. The effects of co-monomers styrene (St), divinyl benzene (DVB) and pentaerythritol triacrylate (PETA) on grafting maleic anhydride (MAH) solid-phase onto OPP backbone were studied. The grafted copolymer structure was characterized by Fourier transform infrared spectroscopy (FT-IR). The results show that, with the increase of storage time, the content of hydroperoxide appears a quick decline in the initial stage and then the decline slows down in the later stage; the protective atmosphere and temperature can influence the storage of OPP. St, DVB and PETA may all significantly improve the rate of MAH grafting onto polypropylene, and they may cause the grafting efficiency of MAH to reach 74.80%, 94.31% and 76.33%, respectively. At the same time, the gel of grafting products which have added St and PETA is far lower than that of the one which has added DVB. FT-IR analysis shows that the MAH and co-monomer are grafted onto OPP, and the partial C=C double bond of polyfunctional co-monomer PETA involves in the grafting reaction. However, the vinyl of DVB has been almost completely reacted in the grafting reaction.