Abstract
Ternary polymer blends of poly (lactic acid), poly(butylene adipate-co-terephthalate), and modified natural rubber (ENR) (PLA/PBAT/ENR) were prepared in a ratio of 80/10/10 (denoted as P811) via reactive extrusion process. HDPE was then blended with P811 at various ratios of 80/20, 90/10 and 95/5 percent by weight. The mechanical, chemical, morphological, and water contact angle properties were investigated in this study. The mechanical properties of HDPE/P811 blends tend to decrease with increasing P811 content up to 20 wt% due to incompatibility between HDPE and P881. However, HDPE/P811 shows good performance in tensile strength but other performance declines, such as an elongation at break and Young’s modulus including impact strength. Therefore, this study finds that the optimum ratio of HDPE/P811 blending is 90/10. The water contact angle measurement reveals the wetting property of the blends compared to neat polymer. The thermal properties of HDPE/P811 indicate that the melting temperature (Tm) shifts to a higher degree compared to neat HDPE, while the crystallinity percent of polymer blends tend to decrease with higher P881 content. Scanning electron microscope (SEM) images and infrared spectrum show well-dispersed particles and incompatibility in the chemical interactions between HDPE and P811, respectively.
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Wiphanurat, C., Hanthanon, P., Ouipanich, S. et al. Blending HDPE with biodegradable polymers using modified natural rubber as a compatibilizing agent: mechanical, physical, chemical, thermal and morphological properties. Polym. Bull. 80, 11421–11437 (2023). https://doi.org/10.1007/s00289-022-04595-3
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DOI: https://doi.org/10.1007/s00289-022-04595-3