聚乙二醇单甲醚接枝苯乙烯马来酸酐共聚物的合成.pdf

39 6 日用化 学工 业 V o.l 39 N o. 6 2009 12 D ec. 2009 Ch ina Surfactant D etergent Cosm etics 聚乙二醇单甲醚接枝苯乙烯马来酸酐共聚物的合成 杨 飚, 杜志平, 张 威, 李佩秀 ( 中国日用化学工业研究院, 山西 太原 0 30001) : , ( SM A - g- M PEG ) , 4% 34 8 h , , 365% 124 g /L, 342 mN /m, : : TQ4 23 : A : 1001- 1803( 2009) 06- 037 1- 04 Synthesis of polyethylene glycolmonomethyl ethers grafting copolymer of styrene andmaleic anhydride YANG B iao, DU Zhi- p ing, ZHANG W e i, L I Pe i- x iu ( China R esearch In stitute o f D aily Chem ical Indu stry, T a iyu an, Shanx i 030001, China) Abstract: T he copo lym er o f styrene and m ale ic anhydride ( SMA ) w as g rafted w ith polyethy lene glyco l m onom ethy l ethers ( M PEG ) to synthesize com b - like surfactan ,t SMA - g - MPEG w ith SMA as its m a in ch ain. The effect of ca talyst dosage, m o lar ratio of m aleic anhydride and po lyethylene g lycol m onom ethy l ethers, reaction tmi e on the gra ft ing y ield of the SMA - g- M PEG w as d iscussed. The resu lts show ed th at when the cond ition s w ere controlled as: p - tolu ene sulfonic acid u sed as catalyst w ith dosage o f 4% , n ( M PEG ) n ( MA ) = 34, reaction t mi e 8 h, opt mi ized produ ct surfactant can be obta ined, and the yie ld achieves 365% . 1 The produ ct w as ch aracterized by IR and HNMR. The surface act iv ity m easurem ents show ed that the critica l m icelle concentration ( cm c) and surface tension at cm c ( ) of the SMA - g - M PEG ach ieve