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Interpolymer Complexes between Hydroxypropylcellulose and Copolymers of Maleic Acid: A Comparative Study

✍ Scribed by Gina-Gabriela Bumbu; Cornelia Vasile; Gabrielle Charlotte Chitanu; Georgios Staikos

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
121 KB
Volume
206
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Summary: The formation of interpolymer complexes (IPCs) between hydroxypropylcellulose (HPC) and copolymers of maleic acid with vinyl acetate (MAc‐VA), acrylic acid (MAc‐AA) and styrene (MAc‐S) in aqueous solution has been investigated by turbidimetry, viscometry and fluorescence measurements. The viscosity data indicated a compact structure for the IPCs between HPC and maleic acid copolymers. Besides H‐bonding, strong hydrophobic forces materialize between HPC and MAc‐S, strengthening this IPC. The strength of the interpolymer interactions was estimated to increase in the order: HPC:MAc‐VA < HPC:MAc‐AA < HPC:MAc‐S. The IPCs of HPC with MAc‐VA or MAc‐AA were water‐soluble at pH values higher than 3, while the IPC between HPC and MAc‐S was water‐soluble at pH values above 4.5.

Cloud point temperature of different interpolymer complexes as a function of copolymer concentration.

magnified imageCloud point temperature of different interpolymer complexes as a function of copolymer concentration.

📜 SIMILAR VOLUMES

Investigation of the Interpolymer Comple
Investigation of the Interpolymer Complex between Hydroxypropyl Cellulose and Maleic Acid-Styrene Copolymer, 1
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The interpolymer complexation, through successive hydrogen bonding, between poly(acry1amide) (PAAm) and poly(N4sopropylacrylamide) (PNiPAAm) with poly(acry1ic acid) (PAA) in aqueous solution has been viscometrically and potentiometrically investigated. The stoichiometry of the complexes formed was d