engleski

Cellulose acetate- and waste paper- based bionanocomposites: Optical and thermal properties

Recycling of waste materials and production of new products with more added values are defined by the principles of the circular economy. Given that the circular economy imply also the continual use of resources and raw materials, this paper deals with the possibility of waste paper use as nano sized filler for cellulose acetete based bio composites. Potential use of multiple times recycled, waste packaging (Kraft) paper and laboratory filter paper as starting materials for nano sized cellulose based filler preparation was determined. As for cellulose acetate polymeric matrix synthesis, Black alder (Alnus glutinosa (L.) Gaertn.) wood and commercial microcrystalline cellulose (Avicel) were used. The optical (UV spectroscopy) and thermal (DSC) properties of prepared bio-nano composites were determined, with supplementary FT-IR analysis of synthesised cellulose acetates. The test results indicated the exceptional importance of the purity of the cellulose base both for the synthesis of nano particles and for the synthesis of the polymeric base of bio- nano composites.

bio- nano composites ; cellulose acetate ; filler ; properties ; waste paper

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