Kurniawan Yuniarto
University of Mataram, Indonesia
Title: Nonmechanical properties of matrix film polylactic acid and polyethylene glycol 400 blend
Biography
Biography: Kurniawan Yuniarto
Abstract
Introducing plasticizer, poly(ethylene glycol) (PEG 400) was applied onto poly(lactic acid) PLA to produce matrix film by direct casting. Non mechanical properties were carried out on plasticized PLA including morphology, crystallinity structure and degree, thermal properties and oxygen barrier properties. Plasticized PLA revealed improving surface structure of PLA matrix film form fractures and homogenous film were achieved at 5% PEG 400. Chromatogram PLA and plasticized PLA categorized crystal structure, a α-form crystal. Intercalated and exfoliated structure did not occur significantly due to dispersion of PEG 400 in the matrix but indicated dispersion structure. Thermal properties did not improve the plasticized PLA significantly for both glass temperature and melting temperature. PEG 400 accelerated the crystal formation that in turn increased the crystallinity degree from 17.71% to 34.64%. Plasticized PLA enhanced permeability value about 20% while largest fraction PEG400 reduced ability to prevent oxygen penetration through the film. The oxygen barrier properties significantly affected the degree of crystallinity in the film with a correlation number of 0.85.