Thermoreversible UCST-type phase behavior of comb-like poly(N-phenyl maleimide-co-n-octadecyl vinyl ether) in organic media

摘要: Comb-like copolymer of N-phenyl maleimide and n-octadecyl vinyl ether was synthesized by conventional free radical solution polymerization. The molecular weight distribution were measured GPC. chemical composition characterized FT-IR, 1H NMR 13C NMR, the results indicated that obtained contained much more content rather than equal molar ratio monomer unit. comb-like can exhibit upper critical temperature thermoresponsive phase behavior reversibly in N,N-dimethylformamide some proper alcohols such as 1-butanol, 1-hexanol, etc. effect polymer concentration co-solvent on investigated, cloud point be tuned conveniently. high resolution method used to comprehend reversible level, revealed decreased pendent long alkyl side chain aggregated separation occurred at temperature; however, mobility main lower temperature.