NDLI: Preparation and Characterization of Composites Based on Polylactic Acid and Beeswax with Improved Water Vapor Barrier Properties.

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Preparation and Characterization of Composites Based on Polylactic Acid and Beeswax with Improved Water Vapor Barrier Properties.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Lim, Jung Hoon Kim, Jeong Ae Ko, Jung A. Park, Hyun Jin
Description	Author Affiliation: Lim JH ( Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, P.O. Box 136-701, Seoul, Republic of Korea.); Kim JA ( Dept. of Packaging, Lotte R&D Center, 4-Ka, Yangpyong-Dong, Youngdeungpo-Ku, Seoul, Republic of Korea.); Ko JA ( Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, P.O. Box 136-701, Seoul, Republic of Korea.); Park HJ ( Dept. of Packaging, Lotte R&D Center, 4-Ka, Yangpyong-Dong, Youngdeungpo-Ku, Seoul, Republic of Korea.)
Abstract	UNLABELLED: Beeswax and a plasticizer (ATBC) were added to polylactic acid (PLA) films in order to enhance the water vapor barrier properties of the films. Beeswax improved the barrier properties; the water vapor permeability in the composite containing 1% beeswax was 58% lower than that of the neat PLA. Fourier transform infrared spectroscopy and X-ray diffraction analysis revealed that the incorporation of beeswax and ATBC had so little effect on the PLA structure. In addition, the structure of PLA did not vary substantially with the additions. The surfaces of the composites were examined by using field emission scanning electron microscopy. Differential scanning calorimetry results showed that the degree of crystallinity of the PLA films increased with the addition of beeswax and ATBC. However, the tensile strength and elongation at break of the composites containing beeswax were up to approximately 50% lower than those of the neat PLA. Although further study is needed to improve the mechanical properties, the aforementioned results showed that the PLA barrier properties can be improved by the incorporation of a small amount of beeswax and ATBC. PRACTICAL APPLICATION: The results of this study can be applied for the preparation of PLA composite films with improved barrier properties. Such biodegradable films are extremely useful for applications in the food packaging industry.
File Format	HTM / HTML
ISSN	00221147
Issue Number	11
Volume Number	80
e-ISSN	17503841
Journal	Journal of Food Science
Language	English
Publisher	Wiley (on behalf ofInstitute of Food Technologists)
Publisher Date	2015-11-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Food science Food Packaging Methods Food Preservation Lactic Acid Chemistry Polymers Steam Waxes Calorimetry, Differential Scanning Crystallization Humans Microscopy, Electron, Scanning Plasticizers Polyesters Spectroscopy, Fourier Transform Infrared Tensile Strength X-ray Diffraction Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Food Science

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