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Mineral Microparticles and Wood Flour as Fillers of Different Biocomposites

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In this work, authors attempted to present and compare test results of two different injection molded biopolymers: thermoplastic wheat starch and cellulose blend as matrices for biocomposites. They were filled with commonly available wood flour or tuff microparticles as an alternative to cellulose-based natural fibres. Physical, mechanical, processing and surface properties of biocomposites were tested, as well as degradation in water or physiological saline and its influence on tensile properties. Also, the tensile fracture surfaces were studied using scanning electron microscope. There was different influence of wood flour and tuff on each biopolymer. The fillers gave stiffness improvement of all biocomposites compared to neat biopolymers and the effect was stronger for tuff powder. Moreover, tuff addition caused hardness increase and reduction of water uptake. While tuff may be considered as stabilizer, reinforcement and even fertilizer for biodegradable products, wood flour advantages are: common availability, stiffness increase effect and possibility of controlling composite degradation time.
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Keywords: BIOCOMPOSITE; BIODEGRADABLE POLYMER; MINERAL FILLER; TUFF

Document Type: Research Article

Publication date: August 1, 2012

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  • The goal of the creation of a biobased economy is challenging to agriculture, forestry, academia, government and industry. The extractable resources of the Earth are finite, regardless of the quibble over when they will be depleted. The economic, political and social demands for biobased chemicals, materials and energy are expected to radically transform the materials industries, particularly the plastics industry as well as the biofuel industry. These changes will be based on the principles of sustainability, eco-efficiency, industrial ecology, and green chemistry and engineering. In keeping with the growth of knowledge in this field, there is a strong need for a forum to share original research related to biobased materials and bioenergy. The Journal of Biobased Materials and Bioenergy (JBMB) has been created as an international peer-reviewed periodical to fulfill the need for communication in these research areas. This journal will encompass related research activities in all fields of science, engineering and the life sciences.
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