Citation: Yan Li, Qiang Yin, Ming-yu Deng, Jun-jie Cui, Bo Jiang. SYNTHESIS AND CHARACTERIZATION OF AMPHOTERIC HYDROGELS BASED ON N-CARBOXYETHYLCHITOSAN[J]. Chinese Journal of Polymer Science, ;2009, 27(3): 335-341. shu

SYNTHESIS AND CHARACTERIZATION OF AMPHOTERIC HYDROGELS BASED ON N-CARBOXYETHYLCHITOSAN

Received Date: 27 December 2007
Revised Date: 27 March 2008

New amphoteric hydrogels based on carboxyethylchitosans (CECH) with various degrees of substitution (DS) were prepared using different amounts of epichlorohydrin (ECH) as the crosslinking agent. The equilibrium swelling ratio (SW) was determined as functions of pH and salt concentration. The hydrogels show typical amphoteric character responding to pH change of the external medium. At isoelectric point (IEP), the hydrogels shrink. The DS value has important effect on the swelling properties of the hydrogels. When the DS of N-carboxyethylchitosan increases from 0.32 to 0.72, the equilibrium swelling ratio (SW) of the hydrogel changes from 76 to 290 at pH 7.3 and from 117 to 499 at pH 11.3. A marked volume decrease was observed in hydrogels with increasing salt concentration in the surrounding solution. The viscoelastic properties of the hydrogels were studied by oscillatory shear measurements under small-deformation conditions. The elastic modulus G, of all the samples has no dependence on frequency and is one order of magnitude larger than the loss modulus G,,, corresponding to a strong gel behavior.
1. [1]
  Maitri Bhattacharjee , Rekha Boruah Smriti , R. N. Dutta Purkayastha , Waldemar Maniukiewicz , Shubhamoy Chowdhury , Debasish Maiti , Tamanna Akhtar . Synthesis, structural characterization, bio-activity, and density functional theory calculation on Cu(Ⅱ) complexes with hydrazone-based Schiff base ligands. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1409-1422. doi: 10.11862/CJIC.20240007
2. [2]
  Chaochao Jin , Kai Li , Jiongpei Zhang , Zhihua Wang , Jiajing Tan . N,O-Bidentated difluoroboron complexes based on pyridine-ester enolates: Facile synthesis, post-complexation modification, optical properties, and applications. Chinese Chemical Letters, 2024, 35(9): 109532-. doi: 10.1016/j.cclet.2024.109532
3. [3]
  Zhe-Han Yang , Jie Yin , Lei Xin , Yuanfang Li , Yijie Huang , Ruo Yuan , Ying Zhuo . Research advancement of DNA-based intelligent hydrogels: Manufacture, characteristics, application of disease diagnosis and treatment. Chinese Chemical Letters, 2024, 35(10): 109558-. doi: 10.1016/j.cclet.2024.109558
4. [4]
  Guan-Nan Xing , Di-Ye Wei , Hua Zhang , Zhong-Qun Tian , Jian-Feng Li . Pd-based nanocatalysts for oxygen reduction reaction: Preparation, performance, and in-situ characterization. Chinese Journal of Structural Chemistry, 2023, 42(11): 100021-100021. doi: 10.1016/j.cjsc.2023.100021
5. [5]
  Shengkai Li , Yuqin Zou , Chen Chen , Shuangyin Wang , Zhao-Qing Liu . Defect engineered electrocatalysts for C–N coupling reactions toward urea synthesis. Chinese Chemical Letters, 2024, 35(8): 109147-. doi: 10.1016/j.cclet.2023.109147
6. [6]
  Lijun Mao , Shuo Li , Xin Zhang , Zhan-Ting Li , Da Ma . Cucurbit[n]uril-based nanostructure construction and modification. Chinese Chemical Letters, 2024, 35(8): 109363-. doi: 10.1016/j.cclet.2023.109363
7. [7]
  Hao Deng , Yuxin Hui , Chao Zhang , Qi Zhou , Qiang Li , Hao Du , Derek Hao , Guoxiang Yang , Qi Wang . MXene−derived quantum dots based photocatalysts: Synthesis, application, prospects, and challenges. Chinese Chemical Letters, 2024, 35(6): 109078-. doi: 10.1016/j.cclet.2023.109078
8. [8]
  Binhan Zhao , Zheng Li , Lan Zheng , Zhichao Ye , Yuyang Yuan , Shanshan Zhang , Bo Liang , Tianyu Li . Recent progress in the biomedical application of PEDOT:PSS hydrogels. Chinese Chemical Letters, 2024, 35(10): 109810-. doi: 10.1016/j.cclet.2024.109810
9. [9]
  Xiaoxia WANG , Ya'nan GUO , Feng SU , Chun HAN , Long SUN . Synthesis, structure, and electrocatalytic oxygen reduction reaction properties of metal antimony-based chalcogenide clusters. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1201-1208. doi: 10.11862/CJIC.20230478
10. [10]
  Shuaiwen Li , Zihui Chen , Feng Yang , Wanqing Yue . The age of vanadium-based nanozymes: Synthesis, catalytic mechanisms, regulation and biomedical applications. Chinese Chemical Letters, 2024, 35(4): 108793-. doi: 10.1016/j.cclet.2023.108793
11. [11]
  Zikang Hu , Hengjie Zhang , Zhengqiu Li , Tianbao Zhao , Zhipeng Gu , Qijuan Yuan , Baoshu Chen . Multifunctional photothermal hydrogels: Design principles, various functions, and promising biological applications. Chinese Chemical Letters, 2024, 35(10): 109527-. doi: 10.1016/j.cclet.2024.109527
12. [12]
  Zhao Li , Huimin Yang , Wenjing Cheng , Lin Tian . Recent progress of in situ/operando characterization techniques for electrocatalytic energy conversion reaction. Chinese Chemical Letters, 2024, 35(9): 109237-. doi: 10.1016/j.cclet.2023.109237
13. [13]
  Xiaoming Fu , Haibo Huang , Guogang Tang , Jingmin Zhang , Junyue Sheng , Hua Tang . Recent advances in g-C3N4-based direct Z-scheme photocatalysts for environmental and energy applications. Chinese Journal of Structural Chemistry, 2024, 43(2): 100214-100214. doi: 10.1016/j.cjsc.2024.100214
14. [14]
  Ying Zhao , Yin-Hang Chai , Tian Chen , Jie Zheng , Ting-Ting Li , Francisco Aznarez , Li-Long Dang , Lu-Fang Ma . Size-controlled synthesis and near-infrared photothermal response of Cp* Rh-based metalla[2]catenanes and rectangular metallamacrocycles. Chinese Chemical Letters, 2024, 35(6): 109298-. doi: 10.1016/j.cclet.2023.109298
15. [15]
  Kaimin WANG , Xiong GU , Na DENG , Hongmei YU , Yanqin YE , Yulu MA . Synthesis, structure, fluorescence properties, and Hirshfeld surface analysis of three Zn(Ⅱ)/Cu(Ⅱ) complexes based on 5-(dimethylamino) isophthalic acid. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1397-1408. doi: 10.11862/CJIC.20240009
16. [16]
  Long TANG , Yaxin BIAN , Luyuan CHEN , Xiangyang HOU , Xiao WANG , Jijiang WANG . Syntheses, structures, and properties of three coordination polymers based on 5-ethylpyridine-2,3-dicarboxylic acid and N-containing ligands. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1975-1985. doi: 10.11862/CJIC.20240180
17. [17]
  Kunyao Peng , Xianbin Wang , Xingbin Yan . Converting LiNO₃ additive to single nitrogenous component Li₂N₂O₂ SEI layer on Li metal anode in carbonate-based electrolyte. Chinese Chemical Letters, 2024, 35(9): 109274-. doi: 10.1016/j.cclet.2023.109274
18. [18]
  Xinyu Yu , Fei Wu , Xianglang Sun , Linna Zhu , Baoyu Xia , Zhong'an Li . Low-cost dopant-free fluoranthene-based branched hole transporting materials for efficient and stable n-i-p perovskite solar cells. Chinese Chemical Letters, 2024, 35(10): 109821-. doi: 10.1016/j.cclet.2024.109821
19. [19]
  Chun-Yun Ding , Ru-Yuan Zhang , Yu-Wu Zhong , Jiannian Yao . Binary and heterostructured microplates of iridium and ruthenium complexes: Preparation, characterization, and thermo-responsive emission. Chinese Journal of Structural Chemistry, 2024, 43(10): 100393-100393. doi: 10.1016/j.cjsc.2023.100393
20. [20]
  Huimin Luan , Qinming Wu , Jianping Wu , Xiangju Meng , Feng-Shou Xiao . Templates for the synthesis of zeolites. Chinese Journal of Structural Chemistry, 2024, 43(4): 100252-100252. doi: 10.1016/j.cjsc.2024.100252

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(546)
HTML views(14)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return