NDLI: Surface modification of atmospheric plasma activated BOPP by immobilizing chitosan

Content Provider	Springer Nature Link
Author	Vartiainen, Jari Rättö, Marjaana Tapper, Unto Paulussen, Sabine Hurme, Eero
Copyright Year	2005
Abstract	Chitosan was immobilized onto plasma activated biaxially oriented polypropylene (BOPP) films aimed at producing antimicrobially active barrier film for food packaging applications. 1% chitosan dissolved into 0.1 M acetic acid was mixed with 0.1% glutaraldehyde (cross-linking agent) and applied onto N2-plasma + NH3 activated BOPP film. Amount of immobilized chitosan was 1.8 g/m2. Films had strong antimicrobial activity against both Bacillus subtilis and Escherichia coli and they reduced the oxygen transmission rate (OTR) measured in dry conditions from 1500 down to 27 cm3/(m2·24 h). Migration tests for determining the total amounts of substances migrating into food simulants (3% acetic acid, 95% ethanol and iso-octane) indicated, that chitosan coating was permanently immobilized onto BOPP without any leaching (total migration < 2 mg/dm2), thus it met the requirements stipulated in Directive 2002/72/EC relating to plastic materials and articles intended to come into contact with foodstuffs. The results suggest that chitosan treated BOPP films may be exploited in various food packaging applications requiring high oxygen barrier and/or antimicrobially active packaging materials.
Starting Page	343
Ending Page	352
Page Count	10
File Format	PDF
ISSN	01700839
Journal	Polymer Bulletin
Volume Number	54
Issue Number	4-5
e-ISSN	14362449
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-05-13
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polymer Sciences Industrial Chemistry/Chemical Engineering Characterization and Evaluation Materials Condensed Matter
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Condensed Matter Physics Polymers and Plastics

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