Materials Chemistry and Physics, Vol.190, 25-30, 2017
PVC materials without migration obtained by chemical modification of azide-functionalized PVC and triethyl citrate plasticizer
In the study, PVC material modified with bio-based triethyl citrate plasticizer was synthesized. PVC was first reacted with sodium azide in order to get the azide-functionalized PVC (PVC-N-3). Then the modified PVC material (M-PVC) was prepared by the reaction of PVC-N-3 and propargyl ether triethyl citrate. The PVC material was characterized with FT-IR, H-1 NMR, elemental analysis, GPC, TGA and DSC. The obtained M-PVC material has higher thermal stability and lower glass-transition temperature compared to plasticized PVC with dioctyl phthalate (DOP). It exhibited near-zero migration in four different solvents (distilled water, 10% (v/v) ethanol, 30% (w/v) acetic acid and petroleum ether). The method provides general method for efficient use of biomass resources based plasticizer. (C) 2017 Elsevier B.V. All rights reserved.