Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4493055 | The Egyptian Journal of Aquatic Research | 2016 | 7 Pages |
Abstract
Chitosan’s activities are significantly affected by degree of deacetylation (DDA), while fully deacetylated chitosan is difficult to produce in a large scale. Therefore, this paper introduces a compression method for preparing 100% deacetylated chitosan with less environmental pollution. The product is characterized by XRD, FT-IR, UV and HPLC. The 100% fully deacetylated chitosan is produced in low-concentration alkali and high-pressure conditions, which only requires 15% alkali solution and 1:10 chitosan powder to NaOH solution ratio under 0.11–0.12 MPa for 120 min. When the alkali concentration varied from 5% to 15%, the chitosan with ultra-high DDA value (up to 95%) is produced.
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Authors
Xiaofei He, Kecheng Li, Ronge Xing, Song Liu, Linfeng Hu, Pengcheng Li,