Effect of Plasticizer Content on the Structure and Properties
Glycerol is the most commonly used plasticizer for protein materials. Glycerol has a high boiling point and can form strong intermolecular hydrogen bonds with protein molecules, so it has a high stability in protein materials. The low strength and high water absorption of SPI plasticized bioplastics still limit the application of SPI.
Plasticizers for Protein‐Based Materials | IntechOpen
The most commonly used plasticizer for protein films is glycerol, which is miscible in most proteins, but several other plasticizers have also been studied [ 7 – 12 ]. Examples are polyfunctional alcohols such as sorbitol, propylene glycol, and di‐ and triethanolamine [ 1, 4, 7, 8, 10, 11, 13 – 20 ].
Plasticizers for Protein‐Based Materials - Semantic Scholar
Plasticizers for Protein‐Based Materials N. H. Ullsten, M. Gllstedt, M. Hedenqvist Published 21 September 2016 Materials Science This study presents a practical approach to select plasticizers for proteins. It is a case study on thermoformed wheat gluten, considered here as a model protein, and it involved 30 plasticizer candidates.
Plasticizers for Protein‐Based Materials
There are numerous reports on plasticized protein‐based films, including matrices from plants such as soy, pea, sunflower, and wheat proteins and zein [5]. Animal‐based protein matrices include sodium caseinate, keratin, gelatin, collagen, and whey and myofibrillar proteins.
Corn Protein-Based Thermoplastic Resins: Effect of Some Polar
Homogeneous blends of corn gluten meal (CGM) and “polar” plasticizers (water, glycerol) or “amphiphilic” plasticizers [octanoic and palmitic acids, dibutyl tartrate and phthalate, and diacetyl tartaric acid ester of mono-diglycerides (DATEM)] were obtained by a hot-mixing procedure.
- What is a protein based polymer?
- The protein-based polymers have shown unique physical and chemical features for the formation of film/coatings. Additionally, these biopolymeric materials can be functionalized with various additives and fillers such as plasticizers, metal/metal oxide nanoparticles, antioxidants, and antibacterial molecules.
- How food packaging films can be made using proteins?
- Several experts are focusing on the development of the food packaging films using proteins owing to their availability, biodegradability and easy processing. Packaging films have been produced using a variety of techniques, such as solution casting, electrospinning, extrusion, and printing.
- Can LDPE be used as a plasticizer for soy based films?
- The plasticizer (polyethylene oxide (PEO), low-density polyethylene (LDPE)) can successfully control various properties (adhesion, cohesion, texture, emulsification, moisture and fat retention, fiber alignment, and texturing ability) for soy-based films. However, soy protein-based films also have some limitations.
- Are protein-based films a sustainable alternative to synthetic packaging materials?
- Overall, protein-based films for food packaging are a promising sustainable alternative to traditional synthetic packaging materials, but further research is needed to fully exploit their potential and scale up the manufacturing processes.
- Are protein-based polymers a suitable material for food packaging applications?
- In summary, various protein-based polymeric films or coatings are intriguing material for food packaging applications. These protein-based polymers have shown unique physical and chemical features for the formation of film/coatings.
- Can protein-based biopolymers be used for food packaging?
- Further research is needed to improve properties, reduce costs, and increase production scalability to fully exploit the potential of these protein-based biopolymers. The use of protein-based films for food packaging is an area of active research and the technology is constantly evolving.
