tailieunhanh - Preparation of polymer composites based on unsaturated polyester reinforced by natural fiber and cellulose microfiber from lung waste in Nghe An

Unsaturated polyester composites reinforced by glass fiber and by hybrid reinforcement glass fiber - lung fiber with cellulose microfiber (MFC) were prepared and investigated. Tensile and flexural strengths of material reached the highest value at polymer composite with 48 %w glass fiber mat and %w MFC ( MPa and 0 MPa), while the highest impact strength reached kJ/m2 at composite containing 48 %w glass fiber but %w MFC. | Journal of Science and Technology 54 (2C) (2016) 366-372 PREPARATION OF POLYMER COMPOSITES BASED ON UNSATURATED POLYESTER REINFORCED BY NATURAL FIBER AND CELLULOSE MICROFIBER FROM LUNG WASTE IN NGHE AN Cao Xuan Cuong1, *, Le Duc Giang 1, Tran Viet Thuyen2, Ta Thi Phuong Hoa2 1 2 Faculty of Chemistry, Vinh University, 182 Le Duan, Vinh city, Nghe An Research Center for Polymer Materials, Hanoi University of Science and Technology, 1 Dai Co Viet, Hai Ba Trung, Ha Noi * Email: caoxuancuong@ Received: 15 June 2016; Accepted for publication: 23 October 2016 ABSTRACT Unsaturated polyester composites reinforced by glass fiber and by hybrid reinforcement glass fiber - lung fiber with cellulose microfiber (MFC) were prepared and investigated. Tensile and flexural strengths of material reached the highest value at polymer composite with 48 %w glass fiber mat and %w MFC ( MPa and 0 MPa), while the highest impact strength reached kJ/m2 at composite containing 48 %w glass fiber but %w MFC. Especially, with %w MFC, the tensile fatigue cycle to failure of composite processed by vacuum bag remarkably increased, % at composite with 48 %w glass fiber and % at hybrid composite reinforced by glass fiber/lung fiber, compared to samples without MFC. Keywords: cellulose microfiber, lung fiber, glass fiber, polymer composite, unsaturated polyester. 1. INTRODUCTION Unsaturated polyester (UPE) resins are widely used in preparation of polymer composite. In Vietnam, some studies have been carried out on improvement of the physical properties of UPE by silicafume [1], chopped aramid fibers [2], by fly ash [3]. Besides, polymer composites reinforced with natural fibers, especially, with cellulose microfiber (MFC) has been interested by many researchers due to their salient advantages compared to traditional reinforcement fibers (carbon, glass fibers ), such as, high mechanical strength, low density, biodegradability, natural renewable .