Plasticized gelatin-based films

Collagen films formed by reticulations of amine and carboxyl groups gelatin-based films flexible, clear, widi good oxygen barrier properties, but poor moisture resistance classical formulations 20-30% gelatin, 10-30% plasticizer mid water. 

Chem. Descrip. Triphenyl phosphate CAS 115-86-6 EINECS/ELINCS 204-112-2 Uses Rame retardant platinizing agent, plastidzer tor collodion cotton plastidzer w/o gelatinizing properties for acetyl cellulose reduces tiamm. ot NC and acetyl cellulose-based plastic compds. and lacquer films flame retardant plasticizer tor photographic film materials, surf, coatings, phenolic laminates, cellulose acetate film/compds., rubber articles made from acrylonitrile-butadiene, polychloroprene rubber Features Not compat. with PVC... 

The introduction of gelatinized starch expanded considerably the use of starch as a polymeric material, but this technology based on water processing was limited by the necessity of more than one step, some of which were discontinuous. Nonetheless, these developments showed that it was possible to produce blends of synthetic thermoplastic materials with gelatinized starch, affording new prospects of the utilization of starch as a plastic material in the production of films and injection-moulded goods. 

Protein-based plastics have been used, alone or in mixtures, to obtain edible films and eoatings. They have been used to protect pharmaceuticals and to improve the shelf life of food products. Some commercialization of protein films has been realized in collagen sansage casing, gelatin pharmaceutical capsules and corn zein protective coatings for nutmeats and candies [71]. 

Case Making. In case making, when the covering material consists of textiles, plastics film, or paper, as in the backlining of books, hot animal glues are used because they set rapidly by gelatinization and rapidly bond the narrow overlap of the coating material around the board, even under the brief contact pressure normally applied in the machine. In special cases, also emulsion-based adhesives are also used. 

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