Hydroxypropylcellulose-graft-poly(N-isopropylacrylamide)—novel water-soluble copolymer with double thermoresponsivity

Summary — A copolymer showing two cloud points was obtained by grafting poly(N-isopropylacrylamide) (PNIPAM) onto hydroxypropylcellulose (HPC). The structure of the polymer was verified using 1 H NMR, FT-IR, GPC, and elemental analysis. The values of cloud points could be changed by increasing ionic strength and as a result of the interactions with surfactants.