Biologisch abbaubare Abfallbeutel zur Bioabfallsammlung

Collagen-based packaging films for nonfood applications and their comparison with commercial polyolefin (polypropylene block copolymer) films

“…Without puncturing the film and the sudden drop in force it is not possible to evaluate the puncture test. Nevertheless, it can be said that the necessary puncture force of the collagen films (1133 N/mm) was only slightly lower than those of a low density polyethylene (LDPE) film with 10 µm thickness (1333 N/mm) as given by Otto et al 43 Figure 20 shows the instable crack formation of the brittle collagen film. Moreover, remarkably for the biofilms was the statistical spreading of the specific mechanical values caused by the heterogeneity of the material.…”

Parameter Optimization of Protein Film Production Using Microbial Transglutaminase

“…In Figure , the mechanical properties of enzymatically cross-linked caseinate films prepared in the present study are compared with commercial polymer films. Values for petroleum-based films (LDPE, HDPE, PP) and films based on other renewable resources (Mater-Bi (starch based) and Ecoflex (biologically degradable copolyester) are taken from the literature. , The tensile strength of cross-linked caseinate films was found to be 2.5−8 times lower than the one of commercial films. However, the elongation at break of the protein films was comparable with HDPE and PP.…”

“…Mechanical properties of cross-linked sodium caseinate films in comparison to commercial films based on oil and other renewable resources. Values for oil-based films and for Mater-Bi and Ecoflex, Cas (Na-caseinate), LDPE (low density polyethylene), HDPE (high density polyethylene), PP (polypropylene), Ma-Bi (Mater-Bi), Eco (Ecoflex), and MTG (microbial transglutaminase).…”