Preparation of Polyacrylic Acid/Rice Straw Composite Superabsorbent and the Loading and Release Properties for Urea

Feng Zhang; Gui Tang; Song Tao Yu; Gui Hua Hou; Ning Xu

doi:10.4028/www.scientific.net/AMR.989-994.665

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 989-994Preparation of Polyacrylic Acid/Rice Straw...

Preparation of Polyacrylic Acid/Rice Straw Composite Superabsorbent and the Loading and Release Properties for Urea

Abstract:

A novel polyacrylic acid/rice straw (PAA/RS) composite superabsorbent was prepared. The factors that can influence the water absorption of the composite were investigated, including the concentration and neutralization degree of AA, the weight ratios of N, N’-methylenebisacrylamide (MBA) to AA and RS to AA. The results show that gel effect plays a key role in the preparation of PAA/RS composite. The addition of an appropriate amount of rice straw to the composite can significantly improve the water absorption. Under the optimized condition, the water absorption of the prepared PAA/RS composite was 285.4 g/g. The composite exhibits good loading and slow-release properties for urea and is promising in agricultural and horticultural applications.

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Periodical:

Advanced Materials Research (Volumes 989-994)

Pages:

665-670

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.989-994.665

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Online since:

July 2014

Authors:

Feng Zhang*, Gui Tang, Song Tao Yu, Gui Hua Hou, Ning Xu

Keywords:

Composite, Rice Straw, Slow Release, Superabsorbent, Urea

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