title: Phase diagrams of smart copolymers poly(N-isopropylacrylamide) and poly(sodium acrylate).
abstract: The phase behavior of linear poly(N-isopropylacrylamide) (PNIPA), linear copolymer poly(N-isopropylacrylamide) and poly(sodium acrylate) (PNIPA-SA), and chemically cross-linked PNIPA in water has been determined by temperature modulated differential scanning calorimetry (TM-DSC). Experiments related to linear polymers (PNIPA and PNIPA-SA) indicated nontypical demixing/mixing behavior with a lower critical solution temperature (LCST), which do not correspond to the three classical types of limiting critical behavior. Some similarities and differences are observed in comparison to our literature data using standard TM-DSC for PNIPA/water. Furthermore no influence of composition cross-linked PNIPA/water system on demixing/mixing temperature was observed.
authors.affiliation: Department of Chemistry, Rzeszow University of Technology, 35-959 Rzeszow, Poland.
authors.forename: Iwona
authors.identifier: 0000-0001-6780-3308
authors.initials: I
authors.lastname: Zarzyka
authors.affiliation: Consiglio Nazionale delle Ricerche, Istituto di Chimica e Tecnologia dei Polimeri, c/o Compresorio Olivetti, Via Campi Flegrei 34, 80078 Pozzuoli, Italy.
authors.forename: Maria Laura
authors.initials: ML
authors.lastname: Di Lorenzo
authors.affiliation: Department of Chemistry, Rzeszow University of Technology, 35-959 Rzeszow, Poland ; ATHAS-MP Company, Knoxville, TN 37922, USA.
authors.forename: Marek
authors.initials: M
authors.lastname: Pyda
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D013818:Thermogravimetry
chemical_list: D000180:Acrylic Resins; D011108:Polymers; C052970:poly-N-isopropylacrylamide; C006903:carbopol 940