• The Influence of Epoxy Functionalized Acrylate Particles on the Properties of Plasticized PLA Blown Films
  • Zhang Y, Zhao Y, Pan H, Lang X, Yang H, Zhang H, Zhang H, Dong L
  • Epoxy 기능화된 Acrylate 입자가 가소화된 PLA Blown Films의 물성에 미치는 영향
Abstract
Polylactide (PLA) was plasticized with poly(diethylene glycol adipate) (PDEGA). The plasticized PLA was further blended with core-shell structured particles of glycidyl methacrylate-functionalized methyl methacrylate-butyl acrylate copolymer (GACR) using a twin-screw extruder, and the extruded samples were blown using the blown thin film technique. Both PDEGA and GACR significantly influenced the physical properties of the films. Compared to neat PLA, the elongation at break and tear strength of the films were significantly improved. The shear yielding induced by cavitation of GACR particles was the major tearing mechanism. GACR could act as a tear resistance modifier for PLA blown films. The spherulite size of the PLA/PDEGA/GACR films decreased with the addition of GACR. The biodegradability of the PLA/PDEGA/GACR films decreased slightly. These findings contributed new knowledge to the additive area and gave important implications for designing and manufacturing polymer packaging materials.

Keywords: polylactide; blown film; epoxy-functionalized acrylic impact modifier; mechanical properties; enzymatic degradation

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This Article

  • 2016; 40(3): 429-438

    Published online May 25, 2016

  • 10.7317/pk.2016.40.3.429
  • Received on Dec 9, 2015
  • Accepted on Feb 6, 2016