|
![本文二维码信息](/download_upload_file.aspx?file_name=/uploadfile/two_dimensional_code_img/zgzzen/2022/7/202207005.png) 二维码(扫一下试试看!) |
Study on Preparation and Properties of Hemicellulose/Chitosan Composite Hydrogels |
Received:January 11, 2022 |
DOI:10.11980/j.issn.0254-508X.2022.07.005 |
Key Words:hemicellulose chitosan composite hydrogels strengthen |
Fund Project:大学生创新创业计划项目(S201910500038);湖北省教育厅青年人才项目(Q20181404);制浆造纸工程国家重点实验室开放基金(201807);湖北工业大学绿色轻工材料湖北省重点实验室开放基金(201710A07)。 |
|
Hits: 2256 |
Download times: 1402 |
Abstract:In this study, hemicellulose/chitosan composite hydrogels were prepared in alkali/urea/water system by using corncob hemicellulose and chitosan. The effect of chitosan dosage on the swelling behavior and compressive strength of the composite hydrogels were discussed, and finally thermal degrade stability of the hydrogels was investigated. Results showed that the hydrogels had a uniform porous structure with a pore size of about 200 μm. Infrared spectroscopy indicated that the network structure of the composite hydrogels was formed by chemical cross-linking between hemicellulose, chitosan and epichlorohydrin. With the increase of chitosan dosage, the swelling ratio of the composite hydrogels in deionized water gradually decreased, the compressive strength gradually increased, and when the dosage of chitosan was 4%, the compressive strength reached 325 kPa. |
View Full Text HTML View/Add Comment Download reader |