聚丙烯酸固定化小球藻高吸水性复合材料的制备及其性能研究  

Preparation and property of chlorella-g-poly (acrylic acid) superabsorbent composite

作　　者：李豪 罗钰[1] 白波[1,3] 曹芳利 王洪伦[3] Li Hao;Luo Yu;Bai bo;Cao Fangli;Wang Honglun(Key Laboratory of Subsurface Hydrology and Ecological Effect in Aird Region(Chang’an University),Ministry of Education,Xi'an 710054;Northwest Plateau Institute of Biology,Chinese Academy of Sciences,Xi'an 710054;Design And Research Institute of Shaanxi Construction Installation Group,Xining 810001)

机构地区：[1]长安大学旱区地下水文与生态效应教育部重点实验室,西安710054 [2]陕建安装集团设计研究院,西安710054 [3]中科院西北高原生物研究所,西宁810001

出　　处：《化工新型材料》2022年第1期266-271,共6页New Chemical Materials

基　　金：青海省藏药研究重点实验室创新平台发展建设专项(2017-ZJ-Y11);青海省科技厅项目(2017-SF-A8);中央高校基本科研项目(300102290103)。

摘　　要：以天然小球藻为基体,以过硫酸钾为自由基引发剂,N,N′-亚甲基双丙烯酰胺为交联剂,在水溶液中通过单体丙烯酸在小球藻表面接枝,合成了杂化高吸水性复合材料(Chlorella@PAA)。用傅里叶变换红外光谱仪、扫描电子显微镜和热重分析仪对材料结构进行表征。考察单体与小球藻的质量比、单体中和度、引发剂和交联剂的用量等因素对Chlorella@PAA复合材料溶胀性能的影响。结果表明,该复合材料的溶胀及消溶胀行为依赖于温度和盐溶液浓度。此外,该复合材料具有良好的吸水保水性能,在工业或农业领域有广阔的应用前景。The hybrid superabsorbent composites on the base of natural chlorella were synthesized by grafting acrylic acid on the surface of chlorella in aqueous solution,potassium persulfate as free radical initiator and N,N′-methylene bisacrylamide as crosslinker.The structure of the product was characterized by fourier transform infrared spectroscopy(FT_IR),scanning electron microscope(SEM) and thermogravimetric analysis(TGA).The effects of factors such as the mass ratio of monomer to chlorella,the degree of monomer neutralization,the content of initiator and crosslinker on swelling properties of chlorella@PAA composite materials were investigated.The results shown that the swelling and deswelling behavior of the composites were dependent on temperature and concentration of salt solution.Moreover,the composites had good water absorption and retention properties,which made it had broad application prospects in the industrial or agricultural fields.

关 键 词：小球藻 固定化微生物技术 高吸水树脂 溶胀行为 

分 类 号：O632[理学—高分子化学]