Krittirash Yorseng.. Melamine formaldehyde coated sisal fibercopperpolylactic acid (PLA) hybrid composites. Master's Degree(Materials and Production Engineering (International Program)). King Mongkut's University of Technology North Bangkok. Central Library. : King Mongkut's University of Technology North Bangkok, 2017.
Abstract:
Natural fiber composites (Bio-Composites) are emerging as a viable alternative to glass fiber reinforced composites especially in medical, food packaging and automotive applications. Among the various biodegradable polymers polylactic acid (PLA) is of peculiar interest because it is derived from renewable resources, such as corn starch. Copper (I) oxide (Cu2O) is metal oxide semiconductor and non-toxic material and is very cheap. The content of Cu2O used was from 10 to 30 phr in PLA. To the PLA/Cu2O composites, Melamine-formaldehyde (MF) coated sisal fiber added to understand the synergetic effect of both Cu2O and MF coated sisal fiber in PLA matrix. MF resin is one of preferred material for coating application, because of its high mechanical properties, water resistance, heat and flame resistances and non-toxicity when MF is cured. Short sisal fiber was selected and incorporated in (uncoated and MF coated) in PLA. The amount of sisal used was 0 to 20 Phr. The mechanical, dynamic mechanical, thermal properties and water absorption behavior of the PLA/Cu2O and PLA/Cu2O/sisal composites were assessed and compared. Melamine formaldehyde modified sisal fiber used as reinforcement for PLA/Cu2O composites. The synergistic effect of filler in PLA matrix was studied systematically. The modulus, tensile strength, % crystallinity and thermal stability improved considerably for the hybrid composites compared to PLA/Cu2O composites. The hybrid composite is an excellent material for 3D-MID
King Mongkut's University of Technology North Bangkok. Central Library