作者机构：
[王菊凤; 李鹄鸣] Key Laboratory of Plant Resource Conservation and Utilization, College of Hunan Province, Jishou University, Jishou 416000, China;[廖飞勇] Environmental Art Design College, Central South Forestry University, Changsha 410004, China;[何平] China International Project Consultation Corporation, Beijing 100044, China
通讯机构：
[Wang, J.-F.] K;Key Laboratory of Plant Resource Conservation and Utilization, College of Hunan Province, Jishou University, China
摘要：
A kaolin/sodium lignosulfonate graft acrylic acid and acrylamide superabsorbent composites(KLPAAM) prepared by solution polymerization are used for the equilibrium absorbency test of KLPAAM superabsorbent composite in different metal ion salt solutions. The effects of the solution concentrations on the equilibrium absorbencies in CuCl2, ZnCl2, FeCl3 and AlCl3 solutions are in order: CuCl2<ZnCl2<FeCl3<AlCl3. The solution concentrations and the pH values have an important effect on the equilibrium absorbencies. There are different pH values, 3.0 in FeCl3 and ZnCl2, 4.25 in AlCl3 and 6.0 in CuCl2 solution when the equilibrium absorbencies quickly increase with the pH values of the solutions. And then they reach their relative define values, in which the pH value is 3.8 in FeCl3, 3.5 in ZnCl2 and 5.5 in AlCl3 solution. The absorbency obviously increases again when the pH value is larger than 7.0 in ZnCl2 solution. They are slightly affected by the solution temperatures, that is, slightly decreases with increasing solution temperatures.
作者机构：
[Xu Jianying; Chen Guihua; Xiang Shilong] Cent S Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha, Hunan, Peoples R China.
会议名称：
International Conference on Agricultural and Biosystems Engineering
会议时间：
FEB 20-21, 2011
会议地点：
Hong Kong, PEOPLES R CHINA
会议主办单位：
[Chen Guihua;Xiang Shilong;Xu Jianying] Cent S Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha, Hunan, Peoples R China.
会议论文集名称：
Advances in Biomedical Engineering
关键词：
crop stalk;bonding performance;cold plasma
摘要：
The surface of two kind of crop stalks(corn and sorghum stalk) was modified by cold plasma to improve surface bonding performance of stalks. The effect of cold plasma treatment on stalks' surface wettability was analyzed by using contact angle tester, and the surface topography and chemical composition variation of the treated stalks were studied by SEM-EDAX and FT-IR. The results showed that after treatment by cold plasma, the surface of crop stalks can be etched, and the weak boundary layer can be removed. The crop stalks' surface were covered with a large number of active functional groups, thus the surface bonding performance of the crop stalks can be improved quickly and effectively.
