THERMO-RESPONSIVE HYDROGEL OF POLI VINYL ALCOHOL (PVA) - CO- N- ISOPROPYL ACRYLAMIDE (NIPAAM) PREPARED BY – RADIATION AS A MATRIX PUMPING/ON-OFF SYSTEM - Erizal, Erizal; Centre for the Apllication Technology of Isotopes and Radiation, National Nuclear Energy Agency, Jl. Cinere Ps. Jumat PO BOX 7002, JKSKL 12070, Indonesia (Universitas Gadjah Mada, 2010)