Effect of Plasma Treatment on the Structures and Properties of Konjac Glucomannan Film |
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Authors: | WEN Cheng-Rong a WANG Li-Xia a WANG Zhi-Jiang a WU Chun-Hua a LIU Ya-Nana HE Ming-Xiangc PENG Shu-Huib PANG Jie |
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Affiliation: | WEN Cheng-Rong a WANG Li-Xia a WANG Zhi-Jiang a WU Chun-Hua a LIU Ya-Nana HE Ming-Xiangc PENG Shu-Huib PANG Jiea② a (College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China) b (Guangzhou City Polytechnic, Guangzhou 510405, China) c (Fuqing Testing Institute of Quality and Measurement, Fuqing 350300, China) |
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Abstract: | To understand the effect of plasma treatment on the Konjac glucomannan film, the nitrogen plasma was injected into the film by ion beam injection machine in this study. The structures and properties of Konjac glucomannan film after plasma treatment were analyzed by Infrared spectroscopy, Raman spectrum, X-ray, ect. The result showed that nitrogen groups appeared in the KGM molecular chain and part of this chain fractured, and the number of hydrogen bonds increased after the treatment of plasma. The form of KGM molecule remained amorphous non-crystalline state, but the crystalline region was increased and became more ordered. The mechanical property of tensile strength and breaking elongation was improved, while the WVP was decreased. The nitrogen groups were grafted on the KGM molecular chain after plasma treatment, which led to the improvement of the properties of KGM film. |
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Keywords: | konjac glucomannan plasma structure nitrogen groups film |
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