Strategy to introduce a pendent micellar structure into poly(N-isopropylacrylamide) hydrogels.
A novel class of functional poly(N-isopropylacrylamide) (PNIPAAm) hydrogels with pendent micellar structure resulting from the pending amphiphilic polymers was designed and prepared. The influence of the pendent micellar structure on the properties of the resulted PNIPAAm hydrogels was examined in terms of morphology observed by scanning electron microscopy, thermal response through differential scanning calorimetry, and deswelling/reswelling kinetics upon external temperature changes. In comparison with the conventional ones, the novel PNIPAAm hydrogels with pendent micellar structure presented improved temperature-sensitive properties, i.e., enlarged water containing capability at room temperature, as well as improved deswelling rate upon heating.
Xu
Xiao-Ding
XD
Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China.
Zhang
Xian-Zheng
XZ
Yang
Jie
J
Cheng
Si-Xue
SX
Zhuo
Ren-Xi
RX
Huang
Ya-Qun
YQ
D000180:Acrylic Resins / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D002627:Chemistry, Physical / Q000379:methods*; D006358:Hot Temperature; D020100:Hydrogels / Q000737:chemistry*; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D008422:Materials Testing; D008823:Micelles; D008855:Microscopy, Electron, Scanning; D011108:Polymers / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013696:Temperature
D000180:Acrylic Resins; D020100:Hydrogels; D008823:Micelles; D011108:Polymers; C052970:poly-N-isopropylacrylamide