Effect of polyethylene wax/soy protein-based dispersion barrier coating on the physical, mechanical, and barrier characteristics of paperboards

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http://hdl.handle.net/10138/335458

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Marzbani , P , Azadfallah , M , Yousefzadeh , M , Najafi , F , Pourbabaee , A A , Koivula , H & Ritala , M 2021 , ' Effect of polyethylene wax/soy protein-based dispersion barrier coating on the physical, mechanical, and barrier characteristics of paperboards ' , Journal of Coatings Technology and Research , vol. 18 , no. 1 , pp. 247-257 . https://doi.org/10.1007/s11998-020-00403-7

Title: Effect of polyethylene wax/soy protein-based dispersion barrier coating on the physical, mechanical, and barrier characteristics of paperboards
Author: Marzbani, Pouya; Azadfallah, Mohammad; Yousefzadeh, Maryam; Najafi, Farhood; Pourbabaee, Ahmad Ali; Koivula, Hanna; Ritala, Mikko
Contributor: University of Helsinki, Helsinki Institute of Sustainability Science (HELSUS)
University of Helsinki, Department of Chemistry
Date: 2021-01
Language: eng
Number of pages: 11
Belongs to series: Journal of Coatings Technology and Research
ISSN: 1945-9645
URI: http://hdl.handle.net/10138/335458
Abstract: Application of barrier dispersion coatings on paperboards, which must have proper moisture and grease resistance for food applications, has always been an interesting subject for the packaging industry. In this study, paperboards were coated with a novel dispersion barrier coating prepared through mixing soy protein isolate (SPI) and polyethylene wax (PE-wax). Different characterization methods were used to study the effects of coating and its composition on the physical, mechanical, and barrier characteristics of paperboards. The results indicated that the incorporation of PE-wax into the coating formulation caused significant reduction of the viscosity of coating slurries. It had no effect on the coating weight of the samples but increased the thickness of the coated paperboards as compared with those coated with SPI only. The increase of the wax content led to a reduction of 5-16% in the tensile strength values in comparison with the uncoated paperboards. Barrier characteristics, i.e., water vapor permeability (WVP), surface wettability, and water resistance, improved by adding PE-wax. In addition, it was found that there was a critical level for the addition of PE-wax, 50% of SPI, as no oil migration was detected when the paperboards coated with SPI coatings contained less than 50% PE-wax.
Subject: Paperboard
Dispersion coating
Soy protein isolate
Polyethylene wax
Barrier characteristics
SOY PROTEIN
EMULSIFYING PROPERTIES
GREASE RESISTANCE
PHYSICOCHEMICAL PROPERTIES
BIODEGRADABLE POLYMERS
EDIBLE FILMS
ISOLATE
PAPER
WAX
OIL
116 Chemical sciences
416 Food Science
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