jiens Journal of Innovative Engineering and Natural Science 2791-7630 İdris Karagöz 10.29228/JIENS.51666 Polymer Science and Technologies Polimer Bilimi ve Teknolojileri Preparation of poly(lactic acid) based biocomposites with poly(ethylene glycol) and montmorillonite clay by solvent casting method https://orcid.org/0000-0003-0600-5913 Özdoğan Reyhan YALOVA ÜNİVERSİTESİ https://orcid.org/0000-0002-2013-5354 Çelebi Mithat YALOVA ÜNİVERSİTESİ 07 30 2021 1 1 33 40 06 06 2021 06 25 2021 Copyright © 2021, Journal of Innovative Engineering and Natural Science 2021 Journal of Innovative Engineering and Natural Science

Poly(lactic acid) is one of the most widely used bioplastics. PLA is derived from lactic acid monomer which is produced by fermentation using microorganisms. It is renewable, biodegradable, biocompatible, and low-cost aliphatic thermoplastic bioplastic. However, it displays low barrier properties to use packaging applications compared with conventional polymers. PLA has brittle, low toughness, and low thermal resistance properties. To improve the weak properties of PLA, copolymers of lactic acid are synthesized or blends of PLA with other synthetic and biodegradable polymers are prepared. PLA has been used as mulching films, biomedical devices, packaging, and membrane materials. In this study, PLA films were prepared by solution casting method using a high shear mixer for 90 sec. PLA films were blended with different concentrations of poly(ethylene glycol) (PEG) and Montmorillonite (MMT). Properties of mechanical, thermal, and optic of biodegradable films were determined using mechanical testing machine Zwick Z 1.0 kN, thermogravimetric analysis, differential scanning calorimetry (DSC), and optical microscopy, respectively.

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