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.
Plasticizers for Protein-Based Materials | Request PDF
Glycerol has been shown to be one of the most effective plasticizers for proteins [28] and the glycerol content used here has been used favorably on other protein-based materials, including soy
Bioplastics for a circular economy | Nature Reviews Materials
In an ideal circular economy, plastics would be made from renewable or recycled resources (Fig. 1).However, the traditional life of most plastic materials is linear (Fig. 1): 79% of all plastic
Phase separation of plasticizers in thermally aggregated
Intermolecular bonding in a protein network includes protein–protein and protein–water–protein interactions and to a certain extent determines the materials’ EMC. When a small amount of plasticizer is added, the EMC dropped, indicating that the plasticizer occupied binding sites (on the polymer) that would normally be occupied by water
Extrusion Processing and Properties of Protein‐Based
A protein-based material could be defined as a three-dimensional macromolecular network, stabilized and strengthened by hydrogen bonds, hydrophobic interactions, and disulfide bonds. 10 Globular proteins are required to unfold and realign before a new three-dimensional network can be formed, and stabilized by new inter- and intra-molecular
- Are polyols a good plasticizer for protein based materials?
- Polyols are often cited as good plasticizers for protein based materials , , , due to their ability to reduce intermolecular hydrogen bonding while increasing intermolecular spacing. Then, the mechanical properties of caseinate films were studied versus plasticizer type and content in the film.
- Are plasticized protein films better than natural polymers?
- As a general rule for synthetic as well as natural polymers, an increase in plasticizer content lead to higher elongation and lower tensile strength. Nevertheless, plasticized protein films present two important drawbacks: first, extensible films from NaCAS exhibit rather low stresses at break, inferior to that of synthetic polymers.
- Are glycerols a good plasticizer for protein based materials?
- Glycerols are often cited as good plasticizers for protein-based materials due to their ability to reduce intermolecular hydrogen bonding while increasing intermolecular spacing. As a small hydrophilic molecule which could be inserted between protein chains, it acts as a plasticizer.
- Why are plasticizers used in biopolymers?
- Plasticizers are molecules of low volatility which are added to biopolymer materials to allow the modification of the functional properties of films by increasing their extensibility, dispensability, flexibility, elasticity, rigidity and mechanical properties (Hanani et al., 2014a, Hanani et al., 2014b).
- How can protein-based food packaging materials be improved?
- The mechanical attributes of the protein-based food packaging materials can be enhanced by incorporating various components in the film composition such as plasticizers, surfactants, crosslinkers, and various bioactive compounds, including antimicrobial and antioxidant compounds.
- 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.
