Bioplastics were developed to overcome environmental problems that are difficult to decompose in the environment. This study analyzes Thai cassava starch-based bioplastics' tensile strength, biodegradability, moisture absorption, and thermal stability. This study used Thai cassava starch and polyvinyl alcohol (PVA) as matrices, whereas Kepok banana bunch cellulose was employed as a filler. The ratios between starch and cellulose are 10:0 (S1), 9:1 (S2), 8:2 (S3), 7:3 (S4), and 6:4 (S5), while PVA was set constant. The tensile test showed the S4 sample's highest tensile strength of 6.26 MPa, a strain of 3.85%, and a modulus of elasticity of 166 MPa. After 15 days, the maximum soil degradation rate in the S1 sample was 27.9%. The lowest moisture absorption was found in the S5 sample at 8.43%. The highest thermal stability was observed in S4 (316.8°C). This result was significant in reducing the production of plastic waste for environmental remediation.

中文翻译：

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木棉香蕉束作为新纤维素源对泰国木薯淀粉/聚乙烯醇混合基生物塑料的热、机械和生物降解性能的影响

生物塑料的开发是为了克服在环境中难以分解的环境问题。本研究分析了泰国木薯淀粉基生物塑料的拉伸强度、生物降解性、吸湿性和热稳定性。这项研究使用泰国木薯淀粉和聚乙烯醇 (PVA) 作为基质，而Kepok香蕉束纤维素用作填料。淀粉和纤维素之间的比例为10:0（S1）、9:1（S2）、8:2（S3）、7:3（S4）和6:4（S5），而PVA设置为恒定。拉伸测试显示S4样品的最高拉伸强度为6.26 MPa，应变为3.85%，弹性模量为166 MPa。15天后，S1样品的最大土壤降解率为27.9%。S5 样品的吸湿率最低，为 8.43%。在 S4 中观察到最高的热稳定性（316.8°C）。这一结果对于减少环境修复中塑料废物的产生具有重要意义。