Studies on Swelling Behaviors and Water Absorbency of Poly (acrylic acid-co-acrylamide)/

Abstract

Abstract: A novel multifunctional superabsorbent composites of poly (acrylic acid-co-acrylamide)/sodium humate/ montmorillonite (PAA-AM/SH /MMT) were synthesized by copolymerization reaction of acrylic acid (AA) and acrylamide (AM) on sodium humate (SH) and montmorillonite (MMT) micropowder in aqueous solution. Water absorbency in distilled water and swelling kinetics for the superabsorbent composites with different weight ratio of SH to MMT were carried out. In addition, the effects of various pH solutions and swelling-reswelling-swelling times on water absorbency were also systematically investigated. The results show that the water absorbency and swelling rate of the superabsorbent composite are improved by introducing simultaneously SH and MMT into the composite in comparison with that of incorporated with SH or MMT.

CLC Number:

S152.71

Sodium Humate/ Montmorillonite Multifunctional Superabsorbent Composite. Studies on Swelling Behaviors and Water Absorbency of Poly (acrylic acid-co-acrylamide)/[J]. Chinese Agricultural Science Bulletin, 2007, 23(4): 435-435.

References

[1] 王爱勤,张俊平.有机－无机复合高吸水性树脂.北京:科学出版社, 006:18-84.
[2] 刘瑞凤,张俊平,郑欣,等.PAM-atta复合保水剂对土壤物理性质的影响.土壤,2006,38(1):86-91.
[3] 董立国,蒋齐,张源润,等.农用土壤保水剂在半干旱地区林业生产中应用效果研究.中国农学通报,2006,22(2):132-135.
[4] 刘瑞凤,宗莉,张传卫,等.多功能复合材料对土壤物理性质的影响.中国农学通报,2005,21(6):424-426,472.
[5] 张保军,丁瑞霞,王成社,等.保水剂在农业上的应用现状及前景分析.水土保持研究,2002,9(2):51-54.
[6] 黄占斌,万会娥,邓西平,等.保水剂在改良土壤和作物抗旱节水中的效应.土壤浸蚀与水土保持学报,1999,5(4):52-55.
[7] 刘瑞凤,张俊平,王爱勤.PAA-AM/SH复合保水剂吸水性能及缓释效果研究.中国农学通报,2005,21(12):205-208.
[8] 顾志忙,王晓蓉,顾雪元,等.傅里叶变换红外光谱和核磁共振法对土壤中腐殖酸的表征.分析化学,2000,28(3):314-317.
[9] Sutton R, Sposito G. Molecular structure in soil humic substance: The new view. Environ. Sci. Technol.,2005,39:9009-9015.
[10] 贺婧,颜丽,杨凯,等.不同来源腐殖酸的组成和性质的研究.土壤通报,2003,34(4):343-345.
[11] 鞠建英,[韩]申东铉.膨润土在工程中的开发与应用.北京:中国建材工业出版社,2003:1-50.
[12] 刘秀珍,孙立艳.膨润土和磷肥对石灰性土壤无机磷形态转化及有效性的影响.核农学报,2003,18(1):59-62.
[13] 卢其明,冯新,孙克君,等.聚合物/膨润土复合控释材料的应用研究.植物营养与肥料学报,2005,11(2):183-186.
[14] 李吉进,徐秋明,倪小会,等.施用膨润土对土壤含水量和有机质含量的影响.华北农学报,2002,17(2):88-91.
[15] 马友华.膨润土在土壤改良和肥料生产上的研究和应用.矿产保护与利用,1996,(1):26-28.