Published March 1, 2012 | Version v1
Journal article Metadata-only

The effects of gamma-irradiation on the structure, thermal resistance and mechanical properties of the PLA/EVOH blends

Creators

  • 1. Changchun Institute of Applied Chemistry, Chinese Academy of Science, 5625 Renmin Street, Changchun, Jilin 130022 (China)
  • 2. Department of Materials Science and Engineering, Jilin University, 5988 Renmin Street, Changchun, Jilin 130025 (China)
  • 3. Zhengzhou Yutong Bus Co., Ltd., Yutong Industrial Park, Yutong Road, Zhengzhou, Henan 450000 (China)
  • 4. CSIRO Materials Science and Engineering, 37 Graham Road, Highett, Vic. 3190 (Australia)
  • 5. Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, Jilin 130041 (China)

Description

Polylactic acid (PLA) is as a well-known biodegradable polymer with strong potential for extending its applications into the commodity industry, which is still limited by its relative low heat distortion temperature (HDT). In this paper, poly(ethylene-co-vinyl alcohol) (EVOH) was blended with PLA by melt blending and followed by a gamma-irradiation at various absorbed doses in the presence of a multi-functional monomer, triallyl isocyanurate (TAIC). The results show that the enhanced irradiation is an effective method for improving the mechanical properties and HDT of PLA/EVOH blends. Remarkably, the HDTs of the irradiated blends have dramatically increased to 140 °C, double the value of neat PLA (70 °C). The content of TAIC and the absorbed dose of irradiation were found to play important roles in the enhancement. Gel extraction, scanning electronic microscopy (SEM) and Fourier Transform Infrared (FTIR) spectroscopy analyses also demonstrate that new co-crosslinked networks have been formed in the irradiated PLA/EVOH blends.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.nimb.2011.12.020

Additional details

Identifiers

DOI
10.1016/j.nimb.2011.12.020;
PII
S0168-583X(11)01135-9;

Publishing Information

Journal Title
Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
Journal Volume
274
Journal Page Range
p. 139-144
ISSN
0168-583X
CODEN
NIMBEU

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44034197
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALCOHOLS; CROSS-LINKING; ETHYLENE; FOURIER TRANSFORM SPECTROMETERS; GAMMA RADIATION; GELS; INFRARED SPECTRA; MECHANICAL PROPERTIES; MONOMERS; POLYMERS; SCANNING ELECTRON MICROSCOPY; TEMPERATURE DEPENDENCE
Descriptors DEC
ALKENES; CHEMICAL REACTIONS; COLLOIDS; DISPERSIONS; ELECTROMAGNETIC RADIATION; ELECTRON MICROSCOPY; HYDROCARBONS; HYDROXY COMPOUNDS; IONIZING RADIATIONS; MEASURING INSTRUMENTS; MICROSCOPY; ORGANIC COMPOUNDS; POLYMERIZATION; RADIATIONS; SPECTRA; SPECTROMETERS

Optional Information

Copyright
Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.