ANALYSIS OF POLY(STYRENE CO-METHYL ACRYLATE) AND POLY(STYRENE CO-BUTYL ACRYLATE) BY HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY

被引:30
|
作者
SPARIDANS, RW [1 ]
CLAESSENS, HA [1 ]
VANDOREMAELE, GHJ [1 ]
VANHERK, AM [1 ]
机构
[1] EINDHOVEN UNIV TECHNOL,DEPT CHEM,INSTRUMENTAL ANAL LAB,5600 MB EINDHOVEN,NETHERLANDS
来源
JOURNAL OF CHROMATOGRAPHY | 1990年 / 508卷 / 02期
关键词
D O I
10.1016/S0021-9673(00)91274-3
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Poly(styrene-co-methyl acrylate) and poly(styrene-co-butyl acrylate) were separated according to their chemical composition by gradient elution. The chromatographic separation on silica was optimized for a gradient ranging from n-heptane as a non-solvent to dichloromethane containing a small amount of methanol as a strong solvent. The influence of different stationary phases, the chemical composition and molecular mass on the separation of the copolymers was investigated. From the results of different chromatographic and turbidimetric experiments it is concluded that the copolymer separation is controlled by both precipitation and adsorption mechanisms. The contribution of adsorption processes to the separation is only advantageous when normal-phase gradients are applied. © 1990.
引用
收藏
页码:319 / 331
页数:13
相关论文
共 50 条