Hydrophobic Coating on Cellulosic Textile Material by Betulin and a Betulin Based Polymer
Betulin is a naturally abundant compound in the outer bark of birch and can be easily obtained by solvent extraction.Herein,solutions of betulin were used to treat cellulosic textile fibers and improve their water repellency.Cotton fabrics impregnated in a 7.5 g L-1 solution of betulin in ethanol showed the highest water contact angle of about 153° while the impregnation in a 3.75 g L-1 solution resulted in a close effect.A terephthaloyl chloride-betulin copolymer was synthesized and dissolved in tetrahydrofuran to afford a solution with a concentration of 3.75 g L-1.The cotton fabric impregnated in this solution showed a water contact angle of 150°.Changes in morphology of the cellulose fibers before and after the treatment were observed by scanning electron microscopy,and the water repellency was measured by a standard spray test.
Tianxiao Huang
Division of Wood Chemistry and Pulp Technology,Department of Fiber and Polymer Technology,School of Chemical Science and Engineering,KTH Royal Institute of Technology,Stockholm,10044,Sweden
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-8
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）