基于吸附色谱的分级技术在聚烯烃表征中的应用  

Application of Fractionation Technique Based on Absorption Chromatography in Polyolefin Characterization

作　　者：杜斌[1] 陈商涛[1] 李荣波[1] DU Bin;CHEN Shang-tao;LI Rong-bo(PetroChina Petrochemical Research Institute,Beijing 102206,China)

机构地区：[1]中国石油天然气股份有限公司石油化工研究院,北京102206

出　　处：《高分子通报》2023年第12期1679-1690,共12页Polymer Bulletin

摘　　要：聚烯烃树脂具有复杂的化学组成和链结构,液相分级技术是有效识别其精细结构的常用表征手段。相对使用较为广泛的结晶分级技术,高温-温度梯度相互作用色谱技术(HT-TGIC),作为一种最新的分级方法,具有可分析无定形聚烯烃样品的优势,大大拓宽了分级技术在聚烯烃树脂中的应用范围。本文列举了温度梯度相互作用色谱(TGIC)在聚烯烃表征中的典型案列,特别是针对结晶分级技术局限的低结晶度/无定形聚烯烃树脂。基于TGIC与凝胶渗透色谱(GPC)技术的联用分析,揭示了聚烯烃材料链结构的二维信息,为性能优异的新型聚烯烃材料研发与设计提供支撑和指导。Liquid chromatography fractionation technique is a typical characterization method for efficiently determining the fine structure of polyolefin resins,which have complex chemical composition distribution and chain structures.Compared with the widely used crystallization-based fractionation techniques,high temperature-temperature gradient interaction chromatography(HT-TGIC),as a novel fractionation method,holds great advantages in analyzing amorphous polyolefins,thus broadening the application of fractionation techniques in polyolefin resins.In this paper,typical applications of HT-TGIC in the polyolefin characterization were demonstrated,especially for low crystallinity/amorphous polyolefin resins that are limited by crystallization fractionation techniques.And more information about bivariate chain structures of polyolefin could be revealed by TGIC coupled with GPC technology.This could provide support and guidance for the development and design of new polyolefin materials with excellent performance.

关 键 词：聚烯烃 化学组成分布 温度梯度相互作用色谱 分级 吸附 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业] O657.7[理学—分析化学]