Biosystems Engineering, Institut Teknologi Sumatera, Lampung, Indonesia.
Research Center for Biomass and Bioproducts, National Research and Innovation Agency (BRIN), Cibinong, Indonesia.
Biopolymers. 2023 Sep;114(9):e23560. doi: 10.1002/bip.23560. Epub 2023 Jul 12.
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.
生物塑料的开发是为了克服在环境中难以降解的环境问题。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。本研究使用泰国木薯淀粉和聚乙烯醇（PVA）作为基质，而 Kepok 香蕉束纤维素则作为填充剂。淀粉和纤维素的比例分别为 10:0（S1）、9:1（S2）、8:2（S3）、7:3（S4）和 6:4（S5），而 PVA 则保持不变。拉伸试验表明，S4 样品的拉伸强度最高，为 6.26 MPa，应变率为 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 样品的吸湿性最低，为 8.43%。S4 的热稳定性最高（316.8°C）。这一结果对于减少塑料废物的产生以进行环境修复具有重要意义。
