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Preparation of poly(acrylic acid-co-acrylamide)/kaolin and release kinetics of urea from it
Liang, R; Liu, MZ(柳明珠); Liu, MZ (reprint author), Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China.
2007-12-05
发表期刊JOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
卷号106期号:5
出版者WILEY
摘要A series of poly(acrylic acid-co-acrylamide)/ kaolin [poly(AA-co-Am) /kaolin] composites were prepared by aqueous solution copolymerization of partially neutralized acrylic acid and acrylamide in the presence of kaolin nanopowder, which was synthesized to act as a release carrier of urea fertilizer. The superabsorbent composite was swollen in aqueous solution of urea to load urea, and the effect of urea concentration on the swelling was investigated. Furthermore, the effects of the contents of crosslinker, kaolin, and acrylamide, the neutralization degree of acrylic acid, and temperature, pH, and ionic strength of release medium on water absorbency and diffusion coefficient of urea release from poly(AA-co-Am) /kaolin were studied systematically. It was found that urea loading percentage could be adjusted by urea concentration of swelling medium, and urea diffusion coefficient could be regulated through the contents of crosslinker, kaolin, and acrylamide, and the neutralization degree of acrylic acid. Additionally, temperature and ionic strength of release medium may also affect the urea release process. The conclusions obtained could provide theoretical basis for urea diffusion behavior in superabsorbent used in agriculture. (c) 2007 Wiley Periodicals, Inc.
出版地HOBOKEN
关键词poly(AA-co-Am)/kaolin urea water absorbency diffusion coefficient mesh size
学科领域Polymer Science
作者部门Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China;
Henan Normal Univ, Coll Chem & Environm Sci, Xinxiang 453007, Peoples R China
DOI10.1002/app.26919
文章类型Article
收录类别SCIE ; EI
语种英语
WOS记录号WOS:000250410500020
EI记录号20074610919997
第一机构
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文献类型期刊论文
条目标识符http://ir.lzu.edu.cn/handle/262010/77803
Collection化学化工学院
通讯作者Liu, MZ (reprint author), Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China.
Recommended Citation:
GB/T 7714
Liang, R,Liu, MZ,Liu, MZ . Preparation of poly(acrylic acid-co-acrylamide)/kaolin and release kinetics of urea from it[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2007,106(5).
APA Liang, R,Liu, MZ,&Liu, MZ .(2007).Preparation of poly(acrylic acid-co-acrylamide)/kaolin and release kinetics of urea from it.JOURNAL OF APPLIED POLYMER SCIENCE,106(5).
MLA Liang, R,et al."Preparation of poly(acrylic acid-co-acrylamide)/kaolin and release kinetics of urea from it".JOURNAL OF APPLIED POLYMER SCIENCE 106.5(2007).
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