Influence of kepok banana bunch as new cellulose source on thermal, mechanical, and biodegradability properties of Thai cassava starch/polyvinyl alcohol hybrid-based bioplastic

IF 3.2 4区生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Biopolymers Pub Date : 2023-07-12 DOI:10.1002/bip.23560

Nelga Autha, Febriana Esza Dewi Siregar, Harmiansyah, Melbi Mahardika, Eka Nurfani

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Abstract

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.

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kepok香蕉束作为新型纤维素源对泰国木薯淀粉/聚乙烯醇混合生物塑料热、力学和生物降解性能的影响

生物塑料是为了克服难以在环境中分解的环境问题而开发的。本研究分析了泰国木薯淀粉基生物塑料的抗拉强度、生物降解性、吸湿性和热稳定性。本研究以泰国木薯淀粉和聚乙烯醇(PVA)为基质，Kepok香蕉束纤维素为填料。淀粉与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)， PVA恒定。拉伸试验表明，S4试样的最高抗拉强度为6.26 MPa，应变为3.85%，弹性模量为166 MPa。15 d后，S1样品土壤最大降解率为27.9%。S5样品吸湿率最低，为8.43%。S4的热稳定性最高(316.8℃)。这一结果对于减少塑料废弃物的产生，进行环境整治具有重要意义。

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来源期刊

Biopolymers 生物-生化与分子生物学

CiteScore

5.30

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Founded in 1963, Biopolymers publishes strictly peer-reviewed papers examining naturally occurring and synthetic biological macromolecules. By including experimental and theoretical studies on the fundamental behaviour as well as applications of biopolymers, the journal serves the interdisciplinary biochemical, biophysical, biomaterials and biomedical research communities.