Hibrid PLA/silica composites with improved thermal stability
2016
Radusin, Tanja (Institute of Food Technology, Novi Sad (Serbia)) | Ristić, Ivan (Faculty of Technology, Novi Sad (Serbia)) | Pilić, Branka (Faculty of Technology, Novi Sad (Serbia)) | Erceg, Tamara (Faculty of Technology, Novi Sad (Serbia)) | Novaković, Aleksandra (Institute of Food Technology, Novi Sad (Serbia))
Recently, polylactide based materials, due to its biodegradability and biorenewability, as well as their functionality, have been put in focus of scientific investigation aimed at resolving problem of solid waste and reduction in exploitation of fossil raw materials. This study compares the effects of different amounts of two types of silica (SiO2) particles on the thermal properties of polylactide (PLA). Applied types of silica fillers differ from each other in particle size or specific area. Samples were prepared by stirring the filler in chloroform, dilution of PLA in prepared mixture and casting on Petri dishes. Thermal properties of obtained composite films were investigated using TGA and DSC methods. The experimental results are pointing out the difference in influence on thermal properties of PLA by addition of nano- compared to micro- fillers. Besides the type, the amount of filler also had significant influence on thermal properties of hybrid material compared to neat PLA.
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