ISSN : 0970 - 020X, ONLINE ISSN : 2231-5039
     FacebookTwitterLinkedinMendeley

Abstract

Synthesized Superabsorbent Based on Cellulose from Rice Straw for Controlled-Release of Urea

Yusnaidar1,2, Basuki Wirjosentono1, Thamrin1 and Eddiyanto1,3

DOI : http://dx.doi.org/10.13005/ojc/330436


Abstract:

Rice straw was used as α-cellulose sources for synthesizing a novel α-cellulose-g-poly(acrylic acid)superabsorbent by graft polymerization betweenα-cellulose rice straw powder and acrylic acidin aqueous solution. The synthesis and controlled-release of fertilizer from superabsorbent wascarriedout.Thesuperabsorbentcomposite was characterized by FTIR, SEM and TGA. The results of FTIR spectra showed OH ofα-cellulose rice straw participated in graft polymerization with acrylic acid. The equilibrium water absorbency of superabsorbentwas investigated by calculating the swelling ratio. The superabsorbent composite was swollenin aqueous solution of urea to load urea. Furthermore, the release of urea from loaded superabsorbent was analyzedin water. Superabsorbent with the highest waterabsorbencyand the slowest profile of release controlled were obtained when the temperature of polymerization reaction was 70oC.

Keywords:

Superabsorbent; rice straw; α-cellulose; controlled-release; urea

[ View HTML Full Text]

Back to TOC