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| Preparation and properties of chitosan/polyethyleneimine modified soybean protein membrane |
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| DOI： |
| KeyWord:modified chitosan soybean protein membrane surface hydrophobicity mechanical property |
| FundProject:2019年国家级大学生创新创业训练计划项目（G201910022055）；国家自然科学基金资助项目(21703009) |
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| Abstract: |
| Chitosan was modified by epichlorohydrin and polyethyleneimine(PEI). The soybean protein isolate was modified by PEI, chitosan and modified chitosan, and then was used to prepare the soybean protein membrane material by blending and casting. The effects of modification treatments on the microstructure, hydrophobicity, mechanical properties and thermal stability of soybean protein membrane material were investigated. The results showed that the crystallinity, surface hydrophobicity, mechanical properties and thermal stability of the soybean protein membrane modified with modified chitosan increased. When the dosage of modified chitosan was 5% of the soybean protein isolate mass, the overall modification effect was the best. At this time, the surface hydrophobicity of soybean protein membrane improved by 23.32%, and the mechanical strength increased by 36.27%. |
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