【摘 要】
：
A superabsorbent polymer was prepared by grafting sodium acrylate (SA) onto Konjac flour using potassium persulfate (KPS) and N, N-methylene bis acrylamide (MBA
【机 构】
：
College of Food Science and Technology,College of Biological Engineering,College of Information Engi
【基金项目】
：
the Project Hubei Provincial Science & Technology Department, China
论文部分内容阅读
A superabsorbent polymer was prepared by grafting sodium acrylate (SA) onto Konjac flour using potassium persulfate (KPS) and N, N-methylene bis acrylamide (MBA) as an initiator and crosslinker , respectively. The effect of various preparation conditions on its water absorbency was investigated. When the Konjac Flour content was 3.0 g , the acrylic acid ( AA ) content was 30.0 g, the amount of initiator was 0.150 g, the neutralization degree of monomer was 85% , the reaction temperature was 60 ℃ and the amount of crosslinker was 0.025 g, the polymers absorbency was 750 times in pure water and 279 times in tap water at ambient temperature. It had also high water retention. The graft efficiency reached 67%. The analyses of FT-IR and SEM indicate that sodium acrylate is grafted on the polysaccharides of Konjac flour.
其他文献
花卉是一种鲜活园艺产品,如果处理不当,极容易衰败,失去观赏价值.怎样有效地延长鲜切花的泛开期、货架存放期和异地运输过程中的保鲜,采用适当的鲜切花采后处理技术,提高花卉
大石山区只有通过小型农业机械的推广应用,才能提高了劳动生产率,减轻了劳动强度,降低了生产成本,改善了农业生产条件,增加了农民的收入,而且缓解了劳动力季节性短缺的矛盾,
贵州宽阔水国家级自然保护区位于贵州省遵义市绥阳县境内,该保护区是一个森林及野生动物类型的自然保护区,对保护整个长江流域的生态安全具有重要意义。文章就该保护区当前林
A chemical deposition was supposed to be an efficient method in preparation of nano-sized Sn/ MWNTs . The nanocomposites of MWNTs and Sn/ MWNTs were both used a
浙江省诸暨市是一个农业大市，也是一个粮食大市，素有“诸暨湖田熟，天下一餐粥”之美称。近年来，诸暨市认真贯彻科学发展观，深入落实省委“两创”总战略，以工业的理念指导农业，以项目
A new LiCoO2 recovery technology of Li-ion battery was studied. LiCoO2 was initially separated from the Al foil with dimethyl acetamide(DMAC), and then the poly
The gas- solid two-phase flows of the precalciner were simulated by different multiphase models, such as mixture model, the Eulerian model, including mixture an
Quality of Service (QoS) is a key factor in Web service advertising, choosing and runtime monitoring. Web service QoS is multi-faceted, fuzzy and dynamic. Curre
The high-temperature oxidation behavior of arc-sprayed aluminum bronze coatings on steel substrate was studied during isothermal exposures in air at 900 ℃. The
To obtain semi-solid Al alloy billet with high quality, an investigation was carried out by imposing a multiple magnetic field from the outside of a copper mold