Evaluation of Dairy Co-product Containing Composite Solutions for the Formation of Bioplastic Films

Replacement of existing plastics derived from non-renewable and petrochemical sources will require the creation of new environmentally friendly polymers. Natural products such as protein containing waste generated from dairy factories have considerable potential for the development of bioplastics. C...

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Bibliographic Details
Published in:Journal of polymers and the environment 2020-02, Vol.28 (2), p.725-736
Main Authors: Ryder, Kate, Ali, M. Azam, Billakanti, Jagan, Carne, Alan
Format: Article
Language:English
Subjects:
Addition polymerization
Bioplastics
Biopolymers
Carboxymethylcellulose
Carrageenan
Casein
Chemistry
Chemistry and Materials Science
Dairy industry wastewaters
Dairy wastes
Environmental Chemistry
Environmental Engineering/Biotechnology
Flotation
Gelatin
Industrial Chemistry/Chemical Engineering
Industrial plants
Materials Science
Morphology
Natural products
Original Paper
Petrochemicals
Petrochemicals industry
Physical properties
Polymer films
Polymer Sciences
Polymers
Polysaccharides
Proteins
Saccharides
Separation techniques
Waste management
Waste streams
Wastewater
Wastewater treatment
Water stability
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Summary:Replacement of existing plastics derived from non-renewable and petrochemical sources will require the creation of new environmentally friendly polymers. Natural products such as protein containing waste generated from dairy factories have considerable potential for the development of bioplastics. Casein rich material (referred to as DAF-casein) harvested from dairy wastewater using a dissolved air flotation (DAF) procedure exhibits self-associating properties, and has potential for the formation of bioplastics, but produces brittle films. Inclusion of additional biopolymers such as polysaccharides and other proteins to form composites with the DAF-casein has the potential to improve the physical properties of such films. Three polymers, κ-carrageenan, sodium carboxymethylcellulose (NaCMC) and gelatin, were found to form homogenous solutions with DAF-casein. All three were successful in the formation of composite bioplastic films with improved morphology and water stability in combination with DAF-casein. The incorporation of additional polymers with dairy waste stream DAF-casein has the potential for the production of bioplastics.
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-019-01635-4