Document Detail


Preparation and properties of polypropylene/clay nanocomposites for food packaging.
MedLine Citation:
PMID:  22417600     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Polypropylene (PP)/clay nanocomposites based on PP, organic clay (montmorillonite; MMT), and maleated polypropylene (MAPP) were prepared by melt compounding. The mechanical, thermal, morphological, and gas barrier properties of the resulting PP/clay nanocomposites were investigated at varying concentrations of the components for food packaging. The results revealed that the mechanical strengths, including tensile, flexural, and Izod impact strength, were increased for PP/clay nanocomposites compared to neat PP. The thermal properties showed a tendency for the melting and degradation temperatures to increase with the clay concentration. The effect of the compatibilizer was observed using scanning electron microscopy (SEM). The X-ray diffraction pattern of the nanocomposites revealed increased d-spacing of the MMT layers, indicating that the compatibility of neat PP and clay was improved by the addition of MAPP, and the intercalation and partial exfoliation of the layers. The use of clay increased the mobility distance of the gas molecules, leading to the oxygen permeability of neat PP being reduced by 26% to 55%.
Authors:
Ri-Na Choi; Chan-Ick Cheigh; Sun-Young Lee; Myong-Soo Chung
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of food science     Volume:  76     ISSN:  1750-3841     ISO Abbreviation:  J. Food Sci.     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2012-03-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0014052     Medline TA:  J Food Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  N62-7     Citation Subset:  IM    
Copyright Information:
© 2011 Institute of Food Technologists®
Affiliation:
Authors Choi, Cheigh, and Chung are with Dept. of Food Science and Engineering, Ewha Womans Univ., Seoul 120-750, Korea. Author Lee is with Dept. of Forest Resources Utilization, Korea Forest Research Inst., Seoul 130-712, Korea. Direct inquiries to authors Chung (E-mail: mschung@ewha.ac.kr) and Lee (E-mail: nararawood@forest.go.kr).
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