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Moisture-Sorption Characteristics of Starch/Low-Density Polyethylene Films

Raj, Baldev and Raj, Eugene and Kumar, K. R. and Mr., Siddaramaiah (2002) Moisture-Sorption Characteristics of Starch/Low-Density Polyethylene Films. Journal of Applied Polymer Science, 84. pp. 1193-1202.

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Abstract

Moisture-sorption characteristics of starch/low-density polyethylene (LDPE) blends were carried out at 27°C for water activity (aw) from 0.1 to 0.9. The sorption data were used to fit six different sorption isotherm models proposed in the literature. The model constants were determined by linear fitting of the sorption equations. The ranges of applicability of water activity for the isothermmodels reported in the article lies between 0.1 and 0.4 (monomolecular layer) for the BET model and between 0.3 and 0.9 (multimolecular and capillary condensation layers) for other models. The value of the coefficient of determination (R2 - 0.97 + 0.02) confirms the linear fitting of the equations studied.

Item Type: Article
Uncontrolled Keywords: starch; LDPE; sorption isotherm; water activity; polyethylene (PE);blends; hydrophilic polymers; films
Subjects: 500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 27 Polymer Chemistry
600 Technology > 05 Chemical engineering > 08 Plastics Technology
Divisions: Food Packaging Technology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 04 Jul 2007 06:41
Last Modified: 28 Dec 2016 08:18
URI: http://ir.cftri.com/id/eprint/1283

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