SOLVENT EFFECTS ON ESTER ALCOHOLYSIS AT FUNCTIONALIZED POLYETHYLENE SURFACES

被引：4

作者：

BERGBREITER, DE

AGUILAR, GA

机构：

[1] Department of Chemistry, Texas A&M University, College Station, Texas

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1995年 / 33卷 / 08期

关键词：

POLYETHYLENE; FUNCTIONALIZATION; TRANSESTERIFICATION; SURFACE FLUORESCENCE; KINETICS;

D O I：

10.1002/pola.1995.080330803

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effects of solvent on the accessibility and reactivity of an ester-bound fluorophore at a functionalized polyethylene-solvent interface have been studied. Fluorophore-labeled polyethylene surfaces were prepared by blending together a small amount of a pyrene ester-terminated ethylene oligomer and a host linear low density polyethylene in solution. Films cast from such solutions were then studied by fluorescence spectroscopy to show that a significant number of the entrapped pyrene groups were at the polyethylene-solvent interface and capable of reaction with soluble reagents. Subsequently, transesterification of these ester-bound pyrenes using various sodium alkoxides in alcohol, alcohol-toluene, or alcohol-tetrahydrofuran solvent mixtures was studied by fluorescence and UV-visible spectroscopic analysis of the supernatant. The extent of alcoholysis of such esters was found to be significantly affected by the solvent chosen and by the structure of the alcohol. (C) 1995 John Wiley and Sons, Inc.

引用

页码：1209 / 1217

页数：9

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