Effects of Plasticizers on Mechanical Properties, Oxygen
Tensile strength and elastic modulus of films were decreased when adding plasticizers, whereas elongation at break were increased. Therefore, it caused an increase in oxygen permeability of...
Full article: Recent Updates on the Barrier Properties
Poly (vinyl alcohol) (PVOH) has a lower oxygen permeability coefficient, i.e. 1.5 cm 3 .m/ (m 2 .day.atm) at 23°C and 0% RH, [24] however, this polymer is difficult to process because of its low thermal degradation point, which is about 150°C, while its melting temperature is around 180–190°C.
"Effect of Plasticizer on Oxygen Permeability of Cast
Polylactic acid (PLA) is becoming an increasingly important biopolymer for packaging applications. PLA brittleness limits its applicability. This study evaluated PLA properties with increasing amounts of added polyethylene glycol (PEG) plasticizer. Oxygen transmission rate (OTR) of cast films was determined using the newly available Dynamic Accumulation (DA) method. Arrhenius temperature
Guide for Oxygen Compatibility Assessments on Oxygen
Oxygen pressure and concentration have significant effects on the flammability and ignitability of materials. In general, materials are easier to ignite and burn more readily as oxygen pressure or concentration increase. Hence, oxygen systems should be operated at the lowest possible pressure and oxygen concentration.
Effect of Plasticizer on Oxygen Permeability of Cast
Effect of Plasticizer on Oxygen Permeability of Cast Polylactic Acid... 55 Activation Energy (Ea) of 23.869 kJ/mol and pre-exponential factor (k o) of 5.243 x 107.Fig 4.
- Does a plasticizer increase water permeability?
- The water vapour permeability was found to increase with added plasticizer, whereas the oxygen permeability decreased. The former effect was explained by the increased polarity of the films, whereas the latter is due, most likely, to an increasing uniformity of the films with the addition of a plasticizer.
- Can PFJ be a source for future plastic films?
- Moreover, the tensile properties and glass transition temperature also showed a decreasing trend with the increase in the plasticizer content. The results are unique and show the potential of PFJ as a source for future plastic films such as in packaging.
- Is glycerol a good plasticizer for PFJ?
- Glycerol is a proven efficient plasticizer for proteins3 and is also compatible with PFJ. It was observed that even the film without glycerol was flexible due to the presence of water and other small molecules with plasticising abilities (Table S1 †).
- What are the advantages and disadvantages of biodegradable plastics?
- A clear advantage, even over many of today's commercial biobased and biodegradable plastics, is that the proteins are not directly a problem related to microplastics. They are a nutritional source for soil and animals and also degrade in most environments.
