Photopolymerisation and characterization of maleylatedcellulose-g-poly(acrylic acid) superabsorbent polymer

• Published in: Carbohydrate polymers 2014-01, Vol.101, p.231-239
• Main Authors: Sawut, Amatjan, Yimit, Mamatjan, Sun, Wanfu, Nurulla, Ismayil
• Format: Article
• Language: English
• Subjects: Absorption; Acrylic acid; Acrylic Resins - chemistry; Agronomy. Soil science and plant productions; Applied sciences; Biological and medical sciences; Cellulose - chemistry; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; Gossypium - chemistry; Grafting and modifications; Hydrogen-Ion Concentration; Maleic Anhydrides - chemistry; Maleylated cotton stalk cellulose; Photochemical Processes; Physicochemistry of polymers; Polymerization; Polymers and radiations; Superabsorbent; Ultraviolet photopolymerisation; Use of agricultural and forest wastes. Biomass use, bioconversion; Water - chemistry
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2013.09.054

•Maleylated cotton stalk cellulose (MCSC) was synthesized and as a crosslinker.•MCSC-g-PAA superabsorbent was prepared by UV photopolymerization.•The effects of various factors on the water absorbency and monomer conversion were investigated.•The structure and properties of the superabsorbent materials were evaluated.•The obtained superabsorbent was easily degraded by cellulose. A novel biodegradable superabsorbent polymer has been prepared from maleylated cotton stalk cellulose (MCSC) crosslinker and acrylic acid (AA) by ultraviolet (UV) photopolymerization in aqueous solution at room temperature, and irgacure 651 as a photoinitiator. The resulting superabsorbent was characterized by FT-IR, 1H NMR, SEM and TGA. The effects of preparation conditions such as degree of substitution (DS), amount of maleylated cotton stalk cellulose, exposed time, photoinitiator amount and monomer concentration on the water absorbency and the monomer conversion in graft were evaluated. The swelling kinetics, salt-resistance, water retention capacity and biodegradability of the MCSC-g-PAA superabsorbent were investigated. It was found that, the obtained superabsorbent have good swelling degree that greatly affected by its composition and preparation conditions. Owing to its considerable good water retention capacity, being economical and environment-friendly, it might be useful for its application in agriculture field.