高效凝胶渗透色谱法测定聚异丁烯丁二酰亚胺无灰添加剂的组成及其分子量分布  

Determinations of Composition and Molecular Weight Distribution of Ashless Additives of Polyisobutylene Succinimide-Type by High Performance Gel Permeation Chromatography

作　　者：成跃祖 

机构地区：[1]兰州炼油化工总厂炼制研究所

出　　处：《色谱》1989年第3期171-172,174,共3页Chinese Journal of Chromatography

摘　　要：聚异丁烯丁二酰亚胺无灰剂(以下简称“剂”)是润滑油主要的清净分散添加剂。国内外有关用凝胶渗透色谱法(GPC)研究剂的组成和分子量分布的文献报道尚不多见,仅有Hillman等应用GPC分离和渗析技术而得的“剂”和油分别作为标样,用外标法测定了“剂”的组成;Bartha等虽然应用GPC研究了“剂”中间产品和最终产品的分子量分布,但并没有研究组成与分子量分布之间的关系。 本工作采用μ-Styragel为固定相,四氢呋喃为流动相,示差折光检测器检测,从而测定了“剂”的组成及分子量分布,并以再循环分离技术考察了外加聚异丁烯(PIB)后的分离度,以及方法准确度及精密度等。The determinations of composition and molecular weight distribution of ashless additives of polyisobutylene succinimide-type by HP-GPC is described. Uing three μ-Styragel 103A-500A-100A columns (300×φ7.8mm) X3 in series, with tetrahydrofuran as the mobile phase, eluates were monitored with a Waters R-401 Differential Refractomer Detector. A recycle technology was used for the separation of polyisobutylene, ashless additives and diluted oil. Accuracy and precision of the method were inspected.

关 键 词：无灰剂 润滑油 组成 分子量 GPC 

分 类 号：TE624.82[石油与天然气工程—油气加工工程]