Thermo-responsive Core-shell Micelles from Self-assembly of Poly (tert-butyl acrylate)-bloek-poly (N-isopropylacrylamide) Synthesized via Atom Transfer Radical Polymerization
Poly (tert-butyl acrylate)-block-poty (N- isopropylacrylamide) (PtBA-b-PNIPAM) with different proportions of two monomers was prepared by atom transfer radical polymerization (ATRP) using l- Chlorophenylethane (l-PECl) as initiator and cuCl / N, N, N, N, N-Pentamethyldiethylenetriamine (PMDETA) as catalyst in the mixture solvent of butanone and 2-propanol. The structure of PtBA-b- PNIPAM was characterized by FTIR spectroscopy and <1>H NMR. The behavior of thermo-responsive block copolymers in solution was investigated by SEM and DLS. DLS measurements indicated that volume phase transition temperature (VPTT) of micelles was at 33℃ around. With increasing temperature, the particle size of micelles tended to decrease.
poly (tert-butyl acrylate)-block-poly (N-isopropylacrylamide) thermo-responsive micelles
TANG Yanchun AI Changjun ZHANG Li MA Jinghong ZHA Liusheng LIANG Borun
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Research Center for Analysis and Measurement, Donghua University, Shanghai 20620, P. R. China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material
国际会议
上海
英文
739-742
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）