Jiqing Huang, W. Meng, F. Qing
Dec 1, 2007
Citations
1
Influential Citations
76
Citations
Quality indicators
Journal
Journal of Fluorine Chemistry
Abstract
Abstract Fluorinated polyacrylats with side group containing vinylidene fluoride (VDF) units (CF 3 (CF 2 ) n (CH 2 CF 2 ) m , n = 3, 5; m = 1, 2) were successfully synthesized. The water and oil repellency properties of these polymers are similar to those of fluorinated polyacrylate with side group containing long perfluorooctyl group (CF 3 (CF 2 ) 7 ). The thermal telomerization of CF 3 (CF 2 ) 5 I and CF 3 (CF 2 ) 3 I with vinylidene fluoride (VDF) provided CF 3 (CF 2 ) 5 CH 2 CF 2 I ( 1b ) and CF 3 (CF 2 ) 3 CH 2 CF 2 CH 2 CF 2 I ( 1c ), respectively. The addition of 1b with ethylene followed by hydrolysis gave CF 3 (CF 2 ) 5 CH 2 CF 2 CH 2 CH 2 OH ( 2b ). Treatment of 1c with ethyl vinyl ether in the presence of Na 2 S 2 O 4 followed by reduction produced CF 3 (CF 2 ) 3 CH 2 CF 2 CH 2 CF 2 CH 2 CH 2 OH ( 2c ). Fluoroacrylates 3b – d were prepared by acrylation of the corresponding fluoroalcohols 2b – d . The semi-continuous process emulsion co-polymerization of 3a – d with octadecyl acrylate and 2-hydroxylethyl acrylate initiated by (NH 4 ) 2 S 2 O 8 in the presence of a mixture emulsifiers of polyoxyethylene(10)nonyl phenyl ether (TX-10) and sodium lauryl sulfate provided stable latexes 4a – d , respectively. The water and oil repellency properties of 4b (R f : CF 3 (CF 2 ) 5 CH 2 CF 2 ) and 4c (R f : CF 3 (CF 2 ) 3 CH 2 CF 2 CH 2 CF 2 ) containing vinylidene fluoride (VDF) units were similar to those of 4a (R f : CF 3 (CF 2 ) 7 ) containing long perfluoroalkyl group and much better than those of polymer 4d (R f : CF 3 (CF 2 ) 3 ) with short perfluoroalkyl chain. Thus, polyacrylates containing vinylidene fluoride units showed promising aspects as the alternatives to the currently used water and oil repellent agents with long perfluoroalkyl chains.