Efficient internal plasticization of poly(vinyl chloride) via free radical copolymerization of vinyl chloride with an acrylate bearing a triazole phthalate mimic
作者： Talita C Rezende , Carlos MR Abreu , Ana C Fonseca , Chad M Higa , Longbo Li
DOI: 10.1016/J.POLYMER.2020.122473
关键词: Radical polymerization 、 Copolymer 、 Polymer 、 Vinyl chloride 、 Monomer 、 Polymerization 、 Acrylate 、 Materials science 、 Polymer chemistry 、 Thermogravimetric analysis
摘要: Abstract Nonmigratory internal plasticization of poly(vinyl chloride) (PVC) is achieved by synthesis chloride)-co-poly(4,5-bis(2-ethylhexyl)-1-[6-prop-2-enoyloxy)hexyl]-1H-1,2,3-triazole-4,5-dicarboxylate) [PVC-co-P(DEHT-HA)] copolymers via free radical polymerization (FRP). Optimization the temperature, solvent, initiator, and vinyl chloride/acrylate (VC/DEHT-HA) monomer ratio were systematically investigated, corresponding glass transition temperatures (Tg) resultant determined. These internally plasticized characterized 1H NMR, FTIR, SEC DMTA. The Tg values PVC-co-P(DEHT-HA) range from −27 to 78 °C, physical properties suggest that P(DEHT-HA) PVC segments are miscible. Thermogravimetric analysis shows increasing DEHT-HA VC increases thermal stability. By varying initial VC/DEHT-HA ratio, one can tune resulting copolymer, making both strategy polymer flexible.
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