Design and synthesis study of the thermo-sensitive poly (N-vinylpyrrolidone-b- N, N-diethylacrylamide)

Xiayun Zhang; Zhongduo Yang; Dengmin Xie; Donglei Liu; Zhenbin Chen; Ke Li; Zhizhong Li; Brandon Tichnell; Zhen Liu

doi:10.1080/15685551.2018.1448230

Design and synthesis study of the thermo-sensitive poly (N-vinylpyrrolidone-b- N, N-diethylacrylamide)

Des Monomers Polym. 2018 Mar 13;21(1):43-54. doi: 10.1080/15685551.2018.1448230. eCollection 2018.

Authors

Xiayun Zhang^{1

2}, Zhongduo Yang¹, Dengmin Xie², Donglei Liu², Zhenbin Chen², Ke Li², Zhizhong Li¹, Brandon Tichnell³, Zhen Liu³

Affiliations

¹ College of Life and Engineering, Lanzhou University of Technology, Lanzhou, China.
² State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Materials Science and Engineering, Lanzhou, China.
³ Department of Physics and Engineering, Frostburg State University, Frostburg, MD, USA.

Abstract

The reversible addition fragmentation chain transfer (RAFT) polymerization method was adopted here to prepare a series of thermo-sensitive copolymers, poly (N,N-diethyl- acrylamide-b-N-vinylpyrrolidone). Their structures, molecular weight distribution and temperature sensitivity performances were characterized by the nuclear magnetic resonance (¹HNMR), the gel permeation chromatography (GPC) and the fluorescence spectrophotometer, respectively. It has been identified that the synthesis reaction of the block copolymer was living polymerization. The thermo-sensitivity study suggested that N-vinylpyrrolidone (NVP), played a key role on the lower critical solution temperature (LCST) performance.

Keywords: RAFT polymerization; block copolymer; characterization; synthesis; thermo-sensitivity.