Hidayati Sri, Maulidia Ulfa, Satyajaya Wisnu, Hadi Sutopo
Department of Agroindustrial Technology, Universitas Lampung, Bandar lampung, 35145, Indonesia.
Department of Chemistry, Universitas Lampung, Bandar lampung, 35145, Indonesia.
Heliyon. 2021 Aug 14;7(8):e07799. doi: 10.1016/j.heliyon.2021.e07799. eCollection 2021 Aug.
waste seaweed has high cellulose content. Therefore, it could be potentially used as a raw material for biodegradable films to replace plastic. A plastic film is its moisture resistance, and this property allows plastic films to be used as packaging materials and biodegraded by microbes. This research aims to obtain a concentration of glycerol and Carboxy Methyl Cellulose (CMC) to obtain the best biodegradable film characteristics from seaweed waste. This study was conducted in factorial by using a complete randomized block design with two factors: glycerol concentration and CMC concentration. Each treatment has three levels and three replications (3 × 3). The first factor was glycerol concentration: 0.25% (G1), 0.5% (G2), and 0.75% (G3). The second factor included concentrations of 1% CMC (C1), 2% CMC (C2), and 3% CMC (C3). Then, Tensile Strength (TS), thickness, solubility, and elongation were observed. Functional group analysis was conducted by Fourier-transform infrared spectroscopy and biodegradability test. The results showed that the addition of glycerol concentrations of 0.5 and 0.7% and CMC from 1 to 3% produced tensile strengths of 23-39 MPa. These values are proportional to the tensile strength of Poly Tetra Fluoro ethyne (PTFE) and Poly Propylene (PP) synthetic plastics released by Dotmar Engineering Plastics. The biodegradability test showed that the produced biodegradable films decomposed after 14 days.
废弃海藻含有高纤维素含量。因此，它有可能被用作可生物降解薄膜的原材料来替代塑料。塑料薄膜的一个特性是其防潮性，而这一特性使得塑料薄膜能够用作包装材料并被微生物生物降解。本研究旨在获得甘油和羧甲基纤维素（CMC）的浓度，以便从海藻废料中获得最佳的可生物降解薄膜特性。本研究采用析因设计，使用完全随机区组设计，有两个因素：甘油浓度和CMC浓度。每个处理有三个水平和三个重复（3×3）。第一个因素是甘油浓度：0.25%（G1）、0.5%（G2）和0.75%（G3）。第二个因素包括1% CMC（C1）、2% CMC（C2）和3% CMC（C3）的浓度。然后，观察拉伸强度（TS）、厚度、溶解度和伸长率。通过傅里叶变换红外光谱进行官能团分析并进行生物降解性测试。结果表明，添加0.5%和0.7%的甘油浓度以及1%至3%的CMC可产生23 - 39兆帕的拉伸强度。这些值与Dotmar工程塑料公司发布的聚四氟乙烯（PTFE）和聚丙烯（PP）合成塑料的拉伸强度成正比。生物降解性测试表明，所生产的可生物降解薄膜在14天后分解。
