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Plasticizing effect of glyceryl tribenzoate, dipropylene glycol dibenzoate, and glyceryl triacetate on poly(lactic acid)
Author(s) -
Wan Tong,
Lin Yanyan,
Tu Yapeng
Publication year - 2016
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24375
Subject(s) - plasticizer , materials science , lactic acid , chemical engineering , thermal stability , compatibility (geochemistry) , polymer chemistry , composite material , genetics , bacteria , engineering , biology
The aim of this article is to compare the plasticizing effect of different plasticizers on poly(lactic acid) (PLA) including glyceryl tribenzoate (GTB), dipropylene glycol dibenzoate (DPGDB), and glyceryl triacetate (GTA). The chemical structures of plasticizers are characterized by 1 H‐nuclear magnetic resonance. PLA is blended with GTA, DPGDB, and GTB at various contents by using a twin screw extruder. Plasticizing effect of three plasticizers are evaluated by comparison of thermal property, storage stability, melt plasticizing coefficient, thermal degradation, and water vapor permeability. This study reveals that PLA/DPGDB exhibits better physical properties than the others do. DPGDB containing ether and ester groups may therefore render good compatibility with PLA. POLYM. ENG. SCI., 56:1399–1406, 2016. © 2016 Society of Plastics Engineers