Sintesis dan Karakterisasi Hidrogel Responsif Temperatur Poli(N,N-dimetilakrilamida-ko-N-isopropilakrilamida) (P(DMA-ko-NIPAM)) serta Uji Aplikasinya Sebagai Adsorben Ion Logam Berat = Synthesis and Characterization of Temperature Responsive Hydrogels Poly(N,N-dimethylacrylamide-co-N-isopropylacrylamide) (P(DMA-co-NIPAM)) and Testing Its Application As Heavy Metal Ion Adsorbent