摘要
采用凝胶渗透色谱(GPC)/示差折光指数(RI)/十八角激光散射仪(MALLS)联用技术,以润滑油无灰分散剂T152为样品,溶解于四氢呋喃(THF)中,测定了T152样品的dn/dc值,并判断了该化合物的分子构型。结果表明,T152的dn/dc值为(0.0521±0.0017)m L/g,rg对Mw作图曲线斜率为0.19±0.02,由此判断T152中的聚异丁烯丁二酰亚胺分子是具有球形构象的聚合物。
The gel permeation chromatography（ GPC） coupled with the eighteen angle laser scattering detector was applied for the dn / dc value of ashless dispersants（ T152） for lubricating oil in THF solution. The result was as follows：dn / dc was（ 0. 0947 ± 0. 0017） m L / g,rgslope of the plot of Mwwas 0. 19 ± 0. 02,which determined the T152 in polyisobutylene succinimide molecule was a polymer having a spherical conformation.
出处
《广州化工》
CAS
2016年第17期135-136,171,共3页
GuangZhou Chemical Industry
关键词
GPC
激光光散射
无灰分散剂
分子构型
GPC
laser scattering
ashless dispersants
molucule conformation
