氧化淀粉对木薯淀粉生物塑料薄膜的物理力学、热性能和原子力显微镜图的影响。
Influence of oxidized starch on physicomechanical, thermal properties, and atomic force micrographs of cassava starch bioplastic film.
机构信息
Department of Chemistry, Federal University of Technology, Akure, Nigeria.
Department of Chemistry, Federal University of Technology, Akure, Nigeria.
出版信息
Int J Biol Macromol. 2019 Aug 15;135:282-293. doi: 10.1016/j.ijbiomac.2019.05.150. Epub 2019 May 23.
Oxidized starch was produced and its effect on starch-based bioplastic film has been evaluated. The produced oxidized starch was coarse, brownish with 15.68% carbonyl content, insoluble in cold water and has a positive influence on bioplastic films. The film thickness increased with increase in the amount of added oxidized starch from 0.21% (film) to 0.23% (film). The film moisture content dropped from 7.93% (film) to 5.36% (film), likewise the film water solubility decreased from 13.48% (film) to 5.75% (film). Addition of oxidized starch led to longer biodegradability and enduring water absorption kinetics. The mechanical property was improved by the addition of oxidized starch. The derivative thermogravimetry analysis indicates five degradation stages for all the bioplastic films, while films surface roughness was shown by AFM. The research has revealed that oxidized starch can be used to improve the physicomechanical properties of starch based bioplastic film.
氧化淀粉的制备及其对淀粉基生物塑料薄膜的影响。所制备的氧化淀粉为粗颗粒状，呈棕色，羰基含量为 15.68%，不溶于冷水，对生物塑料薄膜有积极影响。随着添加量的增加，薄膜厚度从 0.21%（薄膜）增加到 0.23%（薄膜）。薄膜的水分含量从 7.93%（薄膜）下降到 5.36%（薄膜），同样薄膜的水溶性从 13.48%（薄膜）下降到 5.75%（薄膜）。添加氧化淀粉导致更长的生物降解性和持久的吸水动力学。添加氧化淀粉可以提高机械性能。导数热重分析表明所有生物塑料薄膜都有五个降解阶段，而 AFM 则显示了薄膜表面粗糙度。研究表明，氧化淀粉可用于改善淀粉基生物塑料薄膜的物理力学性能。
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