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魔芋葡甘聚糖-丙烯酸接枝共聚物的吸湿特性研究

Moisture absorption characteristics of konjac glucomannan grafted acrylic acid

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【Author】 Li Wanfen1, Wang Chao1, Li Hongbin1, Zhan Xiaohui1, Huang Jing2, Jiang Fatang 1,3※ , Zhang Shenghua3 (1.College of Biological Engineering, Hubei University of Technology, Wuhan 430068, China; 2.College of Information Engineering, Hubei Light Industry Technology Institute, Wuhan 430070, China; 3.College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China)

【机构】湖北工业大学生物工程学院；湖北轻工职业技术学院信息工程系；华中农业大学食品科技学院武汉430070；华中农业大学食品科技学院；武汉430068；武汉430070；

【摘要】该文研究了魔芋葡甘聚糖-丙烯酸接枝共聚物(KSAP)和通用干燥剂硅胶、蒙脱石在几种环境湿度下的吸湿特性,并分析它们吸湿后在干燥环境(RH(10±1)%,(25±1)℃)中的解吸性能。结果表明在RH(30±1)%,(25±1)℃下,硅胶和蒙脱石在9d时的吸湿率为15%,KSAP为12%,而在RH(75±1)%,(25±1)℃和RH(90±1)%,(25±1)℃的环境中,KSAP在9d时吸湿率分别达到70%和120%,且干燥环境中的保水能力强。同时运用红外光谱(IR)和扫描电镜(SEM)对KSAP进行结构分析,IR结果表明KSAP富含-OH和-COO-亲水基团,SEM图说明KSAP为多网格物理结构。更多还原

【Abstract】 The moisture absorption and desorption of konjac glucomannan grafted acrylic acid(KSAP) and common desiccant(silica gel and mentor-rock) were investigated in different humidities. Also the moisture desorption at RH(10±1)%, (25±1)℃ was analyzed. Results indicate that the absorptivity of common desiccant and KSAP is 15% and 12% for 9 d respectively at RH(30±1)%, (25±1)℃. At RH(75±1)%, (25±1)℃ and RH(90±1)%, (25±1)℃, the absorptivity of KSAP reaches 70% and 120% for 9 d respectively. KSAP also has good water retention. IR analysis indicates that hydrophilic group is rich in KSAP. The SEM image shows that KSAP has network structure.更多还原

【关键词】魔芋葡甘聚糖；吸湿特性；红外光谱；扫描电镜；
【Key words】 konjac glucomannan； moisture absorption characteristics； infrared spectrum； scanning electron microscopy；

【基金】湖北省科技厅资助(2001AA207B02)

【文献出处】农业工程学报 ,Transactions of the Chinese Society of Agricultural Engineering , 编辑部邮箱 ,2006年11期

【分类号】TS201
【被引频次】32
【下载频次】287

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