POLYMER-POLYMER COMPLEXATION IN DILUTE AQUEOUS-SOLUTIONS - POLY(ACRYLIC ACID)-POLY(ETHYLENE OXIDE) AND POLY(ACRYLIC ACID)-POLY(VINYLPYRROLIDONE)

被引：55
|
作者：
PRADIP
MALTESH, C
SOMASUNDARAN, P
KULKARNI, RA
GUNDIAH, S
机构：
[1] COLUMBIA UNIV,HENRY KRUMB SCH MINES,LANGMUIR CTR COLLOIDS & INTERFACES,NEW YORK,NY 10027
[2] TATA RES DEV & DESIGN CTR,POONA 411001,INDIA
[3] NATL CHEM LAB,DIV POLYMER CHEM,POONA 411008,MAHARASHTRA,INDIA
来源：
LANGMUIR | 1991年 / 7卷 / 10期
关键词：
D O I：
10.1021/la00058a024
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Fluorescence spectroscopy of pyrene-labeled poly(acrylic acid) (PAA) was used to study its interactions with poly(ethylene oxide) (PEO) and poly(vinylpyrrolidone) (PVP) in aqueous solutions. The effects of molar ratio, molecular weight, and solvent were also investigated. Hydrogen bonding is the primary mechanism of interaction among these polymers. Excimer fluorescence studies show that the PVP-PAA complex is stronger than and exists in a more constricted form than the PEO-PAA complex. Interactions between PVP and PAA are prevalent over a wider pH range than those of PAA and PEO. The higher electronegativity of the oxygen in the pyrrolidone group is attributed as the reason for the stronger interaction of PVP with poly(acrylic acid).
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页码：2108 / 2111
页数：4
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