Preparation of Intelligent Functional Paper Using Alginate Polymer Film
In recent times, intelligent materials that exhibit functionality in response to external stimuli have been actively studied. We have previously applied this concept of intelligent material to a functional paper. In the present work, a polyethylene nonwoven sheet was functionalized with an alginate film that was able to release ellagic acid in response to sodium ion (Na+). The objective was to produce a sheet that is able to release the moisturizer in response to Na+in sweat or urine, and thus to maintain the level of moisture in the skin. A nonwoven polyethylene impregnated with an aqueous solution of CaCl2 was immersed in sodium alginate solution containing ellagic acid for 5 minutes, and then dried at 105℃ for 30 minutes. Calcium alginate film containing ellagic acid was formed on polyethylene nonwoven sheet by reaction of sodium alginate with calcium chloride in the presence of ellagic acid. The film had the intelligent function of release of ellagic acid triggered by Na+. This response resulted from conversion of the water-insoluble calcium alginate to water-soluble sodium alginate. The optimal conditions for the intelligent calcium alginate film prepared on the polyethylene surface were 0.5％ CaCl2 solution and 0.05 or 0.1％ sodium alginate solution.
Hideaki Ichiura Takayoshi Konishi Masaaki Morikawa
Faculty of Agriculture, Kochi University, Nankoku-shi 783-8502, Japan Unicharm Corporation, 1531-7 Wadahama, Toyohama-shi, Kagawa, 769-1602, Japan Ehime prefectural paper industrial research institute 127, Doiyama, Mendori-cho, Shikokuchuo-shi, Eh
国际会议
南京
英文
673-677
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）