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Impact of the coating process on the molecular structure of starch-based barrier coatings

Menzel, Carolin and Koch, Kristine (2014). Impact of the coating process on the molecular structure of starch-based barrier coatings. Journal Of Applied Polymer Science. 131:23, 1-9
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Official URL: http://dx.doi.org/10.1002/app.41190

Abstract

Molecular analysis of starch structure can be used to explain and predict changes in physical properties, such as water vapor and oxygen barrier properties in packaging materials. Solution casting is a widely used technique to create films from starch formulations. This study compared the molecular properties of these standard films with those of experimental coatings applied to paper in laboratory-scale and pilot-scale trials, with all three techniques using the same starch formulation. The results revealed large differences in molecular structure, i.e., cross-linking and hydrolysis, between films and coatings. The main differences were due to the shorter drying time allowed to laboratory-scale coatings and the accelerated drying process in pilot trials owing to the high energy output of infrared dryers. Furthermore, surface morphology was highly affected by the coating technique used, with a rougher surface and many pinholes occurring in pilot-scale coatings, giving lower water vapor permeability than laboratory-scale coatings.

Authors/Creators:Menzel, Carolin and Koch, Kristine
Title:Impact of the coating process on the molecular structure of starch-based barrier coatings
Series/Journal:Journal Of Applied Polymer Science (0021-8995)
Year of publishing :2014
Volume:131
Number:23
Page range:1-9
Number of Pages:9
Publisher:Wiley
ISSN:0021-8995
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Agris subject categories.:Q Food science > Q01 Food science and technology
X Agricola extesions > X50 Chemistry
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 104 Chemical Sciences > Polymer Chemistry
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Food Science
Agrovoc terms:biopolymers, coating, starch, packaging
Keywords:biopolymers, coatings polysaccharides, properties and characterization, structure property relations, renewable polymers
URN:NBN:urn:nbn:se:slu:epsilon-e-2622
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2622
Additional ID:
Type of IDID
Web of Science (WoS)000342920100052
ID Code:12131
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Food Science (until 161231)
Deposited By: SLUpub Connector
Deposited On:25 May 2015 12:26
Metadata Last Modified:04 Aug 2015 15:24

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