Swelling behavior of poly(sodium acrylate)/kaoline superabsorbent composite

Using partly neutralized acrylic acid as monomer, kaoline ultrafine powder as filler and N,N′‐(dimethyl)acrylamide as crosslink agent, poly(sodium acrylate)/kaoline superabsorbent composite was synthesized by aqueous solution polymerization method. Using the superabsorbent composite as collagen, a h...

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Bibliographic Details
Published in:Polymer engineering and science 2006-03, Vol.46 (3), p.324-328
Main Authors: Wu, Jihuai, Zhong, Jinfeng, Lin, Jianming, Wei, YueLin, Xie, Yimin
Format: Article
Language:English
Subjects:
Absorbents
Acrylics
Analysis
Applied sciences
Chemical properties
Composite materials
Composites
Electrochemistry
Exact sciences and technology
Forms of application and semi-finished materials
Neutralization (Chemistry)
Polymer industry, paints, wood
Polymerization
Properties
Structure
Technology of polymers
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Summary:Using partly neutralized acrylic acid as monomer, kaoline ultrafine powder as filler and N,N′‐(dimethyl)acrylamide as crosslink agent, poly(sodium acrylate)/kaoline superabsorbent composite was synthesized by aqueous solution polymerization method. Using the superabsorbent composite as collagen, a hydrogel was prepared. The influence of the neutralization degree of superabsorbent collagen, the compositions, the concentration, and the pH value of exterior solution on the swelling behavior of the hydrogel was investigated. It was found that the swelling capability of the hydrogel depended on the groups on the collagen. The swelling capability of the hydrogel relied on the ionic intensity, molecular polarity, molecular volume, as well as the concentration of exterior solution. When the pH value of exterior solution was equal to seven, the hydrogel has a maximum swelling value of 800 times. POLYM. ENG. SCI. 46:324–328, 2006. © 2006 Society of Plastics Engineers
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.20483