使用柠檬酸对琼脂糖生物塑料进行交联。
Crosslinking of agarose bioplastic using citric acid.
机构信息
Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, India.
Department of Aerospace Engineering, Indian Institute of Technology Kanpur, Kanpur, India.
出版信息
Carbohydr Polym. 2016 Oct 20;151:60-67. doi: 10.1016/j.carbpol.2016.05.040. Epub 2016 May 16.
We report chemical crosslinking of agarose bioplastic using citric acid. Crosslinking was confirmed using Fourier transform infrared (FTIR) spectroscopy. The effects of crosslinking on the tensile strength, swelling, thermal stability, and degradability of the bioplastic were studied in detail. The tensile strength of the bioplastic films increased from 25.1MPa for control films up to a maximum of 52.7MPa for citric acid crosslinked films. At 37°C, the amount of water absorbed by crosslinked agarose bioplastic was only 11.5% of the amount absorbed by non-crosslinked controls. Thermogravimetric results showed that the crosslinked samples retain greater mass at high temperature (>450°C) than control samples. Moreover, while the crosslinked films were completely degradable, the rate of degradation was lower compared to non-crosslinked controls.
我们报告了使用柠檬酸对琼脂糖生物塑料进行化学交联。通过傅里叶变换红外（FTIR）光谱证实了交联。详细研究了交联对生物塑料的拉伸强度、溶胀、热稳定性和可降解性的影响。生物塑料薄膜的拉伸强度从对照薄膜的 25.1MPa 增加到柠檬酸交联薄膜的最大值 52.7MPa。在 37°C 下，交联琼脂糖生物塑料吸收的水量仅为未交联对照物的 11.5%。热重分析结果表明，交联样品在高温（>450°C）下保留的质量比对照样品多。此外，虽然交联膜完全可降解，但与未交联对照物相比，降解速度较低。
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