紫外光聚合法制备棉秆纤维素接枝丙烯酸-腐植酸高吸水树脂及其性能  

UV Polymerization and Performance of Cotton Stalk Cellulose-g-Acrylic Acid/Humic Acid Superabsorbent Resin

作　　者：艾买提江.萨伍提 买买提江.依米提 吐尼莎古丽.阿吾提 司马义.努尔拉 

机构地区：[1]新疆大学化学化工学院,乌鲁木齐830046

出　　处：《功能高分子学报》2014年第2期224-230,共7页Journal of Functional Polymers

基　　金：国家自然科学基金(21064009);新疆维吾尔自治区高校科研项目(XJEDU2012106)

摘　　要：以丙烯酸(AA)、改性棉秆纤维素(MCSC)和腐植酸(HA)为原料,2,2-二甲氧基-苯基甲酮为引发剂,采用紫外光聚合法制备了降解性复合高吸水树脂(MCSC-g-PAA/HA)。用红外光谱和扫描电镜对产物进行了表征。研究了AA的浓度、MCSC和HA的含量、反应时间和光引发剂的添加量等因素对该树脂溶胀性能的影响。通过测定该树脂的吸水速率和土壤中的保水率及降解性,研究了盐溶液浓度对树脂吸液率的影响。结果表明,在优化条件下,所得树脂在蒸馏水和食盐水(w(NaCl)=0.9%)中的吸液率分别达到870 g/g与94 g/g。A novel biodegradable superabsorbent resin was prepared with acrylic acid（AA）, maleylated cotton stalk cellulose（MCSC） and humic acid（HA） by ultraviolet （UV） photopolymerization, and 2,2- dimethoxy-2-phenylacetophenone as an initiator. The samples were further characterized by means of FT- IR and SEM. The effects of preparation conditions such as monomer concentration, amount of maleylated cotton stalk cellulose and HA, exposed time and photoinitiator amount on the absorbency were evaluated. The swelling kinetics, salt-resistance, water retention capacity and biodegradability of the MCSC-g-PAA/ HA superabsorbent were investigated. Results show that absorbencies of the resin which is polymerized under the optimum condition are as follows： the deionized water absorbency is 870 g/g, the saline water （w（NaC1） =0.9%） absorbency is 94 g/g.

关 键 词：紫外光引发聚合 改性棉秆纤维素 腐植酸 高吸水树脂 生物降解性 

分 类 号：O63[理学—高分子化学]