TAILIEUCHUNG - Synthesis of EVA-g-MA and its effects on tensile properties and morphology of ethylene vinyl acetate copolymer bamboo flour and polypropylen bamboo/flour/composites

This study investigates the technique to overcome these challenges without the treatment and surface modification of natural additive fillers. The obtained experimental results showed that using maleic anhydride grafted ethylene vinyl acetate copolymer (EVA-g-MA) with wt.% of MA could enhance the adhesion and interaction of bamboo flour (BF) with EVA and polypropylene (PP) matrices. | Vietnam Journal of Science and Technology 56 (3B) (2018) 199-208 SYNTHESIS OF EVA-g-MA AND ITS EFFECTS ON TENSILE PROPERTIES AND MORPHOLOGY OF ETHYLENE VINYL ACETATE COPOLYMER/BAMBOO FLOUR AND POLYPROPYLENE/ BAMBOO FLOUR COMPOSITES Mai Duc Huynh, Do Van Cong, Do Quang Tham, Tran Huu Trung, Nguyen Vu Giang* Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi * Email: nvgiang@; Received: 17 July 2018; Accepted for publication: 7 September 2018 ABSTRACT Thermoplastic composites reinforced with natural fillers (WPCs) have been being attracted many attentions in recent years. The biggest challenges for WPCs production have to face is the poor adhesion and interaction between the components in the composites. This study investigates the technique to overcome these challenges without the treatment and surface modification of natural additive fillers. The obtained experimental results showed that using maleic anhydride grafted ethylene vinyl acetate copolymer (EVA-g-MA) with wt.% of MA could enhance the adhesion and interaction of bamboo flour (BF) with EVA and polypropylene (PP) matrices. The improvements of those properties were reflected in tensile properties and mophological structure of EVA/BF composite and PP/BF composite with the presence of EVAg-MA. Tensile strength of EVA/BF and PP/BF composites at the same 50 wt% of BF, increased by 67 % and 12 %, respectively when EVA-g-MA was introduced. Keywords: compatibiliser, wood plastic composites, ethylene vinyl acetate, polypropylene, bamboo flour. 1. INTRODUCTION Thermoplastic composites reinforced with natural fillers have been gaining many attentions in recent years. These materials have outstanding properties such as environment-friendly behaviours, low density, easy to recycle [1-2]. Consequently, they can be widely applied for decking, siding, indoor building material and so on [3]. However, the use of wood to prepare these composites faces the .

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