AI Article Synopsis
- Bilayer films were created using a layer of PCL with either thermoplastic starch or thermoplastic starch containing 5% PCL, enhanced with plasticizers sprayed prior to molding.
- S95 films demonstrated excellent adhesion and mechanical performance, especially with potassium sorbate added between layers.
- These bilayers significantly improved barrier properties to water vapor and oxygen, with the S95/PCL combination featuring the best overall performance and antimicrobial effects due to potassium sorbate.
Article Abstract
Bilayer films consisting of one layer of PCL with either one of thermoplastic starch (S) or one of thermoplastic starch with 5% PCL (S95) were obtained by compression molding. Before compression, aqueous solutions of ascorbic acid or potassium sorbate were sprayed onto the S or S95 layers in order to plasticize them and favor layer adhesion. S95 films formed bilayers with PCL with very good adhesion and good mechanical performance, especially when potassium sorbate was added at the interface. All bilayers enhanced their barrier properties to water vapour (up to 96% compared to net starch films) and oxygen (up to 99% compared to PCL pure). Bilayers consisting of PCL and starch containing 5% PCL, with potassium sorbate at the interface, showed the best mechanical and barrier properties and interfacial adhesion while having active properties, associated with the antimicrobial action of potassium sorbate.
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| http://dx.doi.org/10.1016/j.carbpol.2015.03.080 | DOI Listing |
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