Amin Md Ruhul, Chowdhury Mohammad Asaduzzaman, Kowser Md Arefin
Department of Mechanical Engineering, Dhaka University of Engineering and Technology, Gazipur, 1707, Bangladesh.
Heliyon. 2019 Aug 28;5(8):e02009. doi: 10.1016/j.heliyon.2019.e02009. eCollection 2019 Aug.
Plastic is an amazing material, and wonderful invention, it has changed the world. Plastic is used everywhere and every day across the globe. But despite its varied uses, its disposal has threatened the environment. Biodegradable plastics can meet these needs and can easily be disposed to the environment. This work focuses on the characterization and performance analysis of starch bioplastics and composite bioplastic to reduce the plastic pollution by its various uses. TGA, DSC, SEM, FTIR, and surface roughness analyses were used to characterize, the mechanical properties, thermal properties and the morphology of the starch bioplastics and composite bioplastic. Starch bioplastics were fabricated using starch vinegar and glycerol. Composite bioplastics ware fabricated using starch, vinegar, glycerol and titanium dioxide. The addition of titanium dioxide improved the tensile strength of the bioplastics from 3.55 to 3.95 MPa and decreased elongation from 88% to 62%. According to Differential Scanning Calorimetry (DSC) Test, the melting point (T) and Glass Transition Temperature (T) significantly affected by the presence of titanium dioxide (TiO). The degree of nano-composite crystallinity was formed by the strong interfacial interaction between the titanium dioxide nanoparticles and the amorphous region of the chain. The decomposition temperature of starch bioplastic was increased by mixing with titanium dioxide nanoparticles. The results gained from SEM showed that better compatible morphologies in composite bioplastic compared to starch bioplastic for its fewer voids, holes, and crack. The functional group O-H, C-H, C=O, and C-O indicate the formation of starch bioplastics and composite bioplastics has already occurred which was confirmed by FTIR spectroscopy. The result is also verified with the available results of other researchers. Therefore, composite bioplastic is a modified elevation of a starch bioplastic with a modified upgrade feature. It can be an alternative to existing conventional plastic, especially packaging applications.
塑料是一种了不起的材料，一项伟大的发明，它改变了世界。在全球范围内，塑料每天都在各个地方被使用。但尽管其用途广泛，其处理却对环境构成了威胁。可生物降解塑料能够满足这些需求，并且可以轻松地排放到环境中。这项工作聚焦于淀粉基生物塑料和复合生物塑料的表征及性能分析，以便通过其各种用途减少塑料污染。采用热重分析（TGA）、差示扫描量热法（DSC）、扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）和表面粗糙度分析来表征淀粉基生物塑料和复合生物塑料的机械性能、热性能及形态。淀粉基生物塑料是用淀粉、醋和甘油制成的。复合生物塑料是用淀粉、醋、甘油和二氧化钛制成的。添加二氧化钛使生物塑料的拉伸强度从3.55兆帕提高到3.95兆帕，伸长率从88%降至62%。根据差示扫描量热法（DSC）测试，熔点（T）和玻璃化转变温度（T）受到二氧化钛（TiO₂）存在的显著影响。纳米复合结晶度的程度是由二氧化钛纳米颗粒与链的无定形区域之间强烈的界面相互作用形成的。与二氧化钛纳米颗粒混合后，淀粉基生物塑料的分解温度升高。扫描电子显微镜（SEM）的结果表明，复合生物塑料的形态比淀粉基生物塑料具有更好的相容性，因为其孔隙、孔洞和裂纹更少。官能团O-H、C-H C=O和C-O表明淀粉基生物塑料和复合生物塑料已经形成，这通过傅里叶变换红外光谱（FTIR）得到了证实。该结果也得到了其他研究人员现有结果的验证。因此，复合生物塑料是具有改良升级特性的淀粉基生物塑料的改进升级版。它可以替代现有的传统塑料，尤其是在包装应用方面。
