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首页> 外文OA文献 >60Co γ-ray Irradiation Crosslinking of Chitosan/Graphene Oxide Composite Film: Swelling, Thermal Stability, Mechanical, and Antibacterial Properties
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60Co γ-ray Irradiation Crosslinking of Chitosan/Graphene Oxide Composite Film: Swelling, Thermal Stability, Mechanical, and Antibacterial Properties

机译：壳聚糖/石墨烯氧化物复合膜的60COγγ射线照射交联：肿胀，热稳定性，机械和抗菌性能

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摘要

In this paper, chitosan (CS)/graphene oxide (GO) composite films were prepared, and the effect of γ-ray irradiation on the properties of composite films was investigated. The irradiation crosslinking reaction occurred in composite films with the existence of acetic acid, and the properties changed upon the various irradiation dose. The swelling degree of the composite film with 0 wt % GO decreased with the increasing of the irradiation dose, but the swelling degree of which with GO increased instead. The thermal stability increased with the increasing of the irradiation dose, but the effect of the irradiation on the thermal stability weakened as the increasing of the content of GO, due to the enhanced irradiation resistance performance. The tensile strength increased firstly and decreased subsequently with the increasing of the irradiation dose and the content of GO. Composite films showed the enhanced antibacterial activity against Bacillus subtilis, compared to Escherichia coli and Staphylococcus aureus. The antibacterial activity weakened with the increasing of the content of GO. The antibacterial activity was relatively stronger when the irradiation dose was 20 KGy. In addition, the structural, crystal, and morphological properties of composite films were characterized by FT-IR, XRD, and SEM. It is worth noting that the GO was pre-functionalized via KH560 for the better compatibility with CS matrix.
机译：本文制备了壳聚糖（Cs）/石墨烯氧化物（GO）复合膜，研究了γ射线照射对复合膜性能的影响。在具有乙酸存在的复合膜中发生辐射交联反应，并且性质改变了各种辐射剂量。随着辐照剂量的增加，复合膜的复合膜的溶胀度降低，但随着溶胀程度而变化。随着辐照剂量的增加，热稳定性增加，但由于增强的照射性能，照射对热稳定性的效果削弱了越来越多的辐射性能。抗拉强度首先增加并随后随后随后随后降低辐照剂量和去的含量。与大肠杆菌和金黄色葡萄球菌相比，复合薄膜展示了针对枯草芽孢杆菌的增强抗菌活性。随着GO含量的增加，抗菌活性削弱了。当辐照剂量为20kGy时，抗菌活性相对较强。此外，复合膜的结构，晶体和形态学性质的特征在于FT-IR，XRD和SEM。值得注意的是，通过KH560预先运行，可以与CS矩阵更好地兼容。

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