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Synthesis of superabsorbent starch‐ graft ‐poly(potassium acrylate‐ co ‐acrylamide) and its properties
Author(s) -
Lu Shaojie,
Duan Menglin,
Lin Songbai
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12025
Subject(s) - superabsorbent polymer , acrylamide , starch , chemical engineering , materials science , monomer , thermogravimetric analysis , polymer chemistry , acrylate , thermal stability , potassium , methyl acrylate , potassium persulfate , butyl acrylate , composite material , chemistry , polymer , organic chemistry , engineering , metallurgy
The superabsorbent's ability to resist deformation and to resist deswelling under externally applied pressures is important in practical application. For instance, it is used in infant diapers, in soil for agriculture, and in forestry. In this article, we report on the synthesis of a superabsorbent/starch‐ graft ‐poly(potassium acrylate‐ co ‐acrylamide) by inverse suspension polymerization. The effects of reaction conditions, such as monomeric concentration, ratio of water to oil, reaction temperature, and obtaining spherical resin, were investigated. Experiments showed that the superabsorbent has a good compressive strength and keeps the shape of particles after absorbing water. After mixing with soil it does not become sticky, and the loose structure can better retain air. It is fit to retain water in soil. In addition, thermogravimetric analysis revealed the superior thermal stability of the grafted product and its large particle size also reduces risk of air pollution. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 1536–1542, 2003