One-step method to prepare starch-based superabsorbent polymer for slow release of fertilizer

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• 作者：Xiaoming Xiao^a ; Long Yu^a ; ^{long.yu@scut.edu.cn} ; Fengwei Xie^b ; ^{f.xie@uq.edu.au} ; ^{fwhsieh@gmail.com} ; Xianyang Bao^a ; Hongsheng Liu^a ; Zhili Ji^a ; Ling Chen^a
• 关键词：SAP ; superabsorbent polymer ; SBSAP ; starch-based superabsorbent polymer ; WCS ; waxy corn starch ; NCS ; normal corn starch ; G50 ; Gelose 50 starch ; CAN ; ceric ammonium nitrate ; N ; N&prime ; -MBA ; N ; N&prime ; -methylene-bisacrylamide ; AM ; acrylamide ; PAM ; polyacrylamide ; FTIR ; Fourier-transform infrared ; TGA ; thermogravimetric analysis ; SEM ; scanning electron microscopy ; ESEM ; environmental scanning electronic microscope ; WAC ; water absorption capacity ; G&prime ; storage modulus
• 刊名：Chemical Engineering Journal
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：309
• 期：Complete
• 页码：607-616
• 全文大小：2226 K
• 卷排序：309

文摘

Starch-based superabsorbent polymers for urea release were prepared by reactive mixing. The effects of initiator, crosslinker, and saponification agent were investigated. Acrylamide was successfully grated onto starch. Crosslinking resulted in a structured network with smaller pore size. The urea release rate depended on gel strength and structure and water absorption capacity.