Abstract
Research has been conducted on the manufacture of PLA Coir Bentonite composites. This study aims to examine the effect of PLA on mechanical strength with the addition of coir and bentonite fillers from North Aceh and Central Aceh. The sample formulations used were single polymer PLA/Coir and PLA/Coir with variations of filler Bentonite Aceh Utara and Aceh Tengah with 2, 4, 6 and 8% respectively. The combination of PCa samples showed the highest bacterial colony growth rate, which was more than 100 colonies/gram during the 1 week testing period. In the PBATd filler mixture sample, the maximum bacterial test value was 65 colonies/gram and the minimum value contained in the PBAUa sample was 105 colonies/gram. The best tensile strength was obtained in the PBATc sample, namely 65 MPa. PBATd samples began to degrade at 370.15oC compared to PCa samples degraded at 280.21oC. While the PBAUa sample began to degrade at a temperature of 282.11oC. The surface structure of the PCa sample is more homogeneous because there is no bentonite filler mixture, but it is brittle and crumbles easily. For the PBATd sample, the surface structure is smoother and more homogeneous compared to the PBAUa sample.
Highlights
Research on environmentally friendly products is currently very popular, especially in the field of researchers or industrial players
This study aims to examine the effect of PLA on mechanical strength with the addition of coir and bentonite fillers from North Aceh and Central Aceh
While the PBAUa, PBAUb, PBAUc and PBAUd samples began to degrade at temperatures of 282.11oC, 289.76oC, 305.54oC and 315.04oC, samples of PBATa, PBATb, PBATc and PBATd began to degrade at 320oC each. 119oC, 349.99oC, 357.76oC and 370.51oC the results of this study indicate that the addition of this AT bentonite filler mixture has succeeded in increasing the thermal and mechanical stability of AU bentonite which is characterized by an increase in the degradation temperature
Summary
Research on environmentally friendly products is currently very popular, especially in the field of researchers or industrial players. Hin et al (2012), Bino et al (2015) PLA polymers have received a lot of attention and show great potential in bioplastic and biomedical applications among synthetic polymers. This biopolymer has disadvantages, one of which is its low melting point, so that its heat resistance is not very good. To overcome these weaknesses, PLA's properties can be improved by adding nano-sized fillers to form
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