Citation: . STUDIES ON THE SELF-DIFFUSION OF WATER ETHANOL MIXTURE IN CHITOSAN PERVAPORATION MEMBRANE WITH PULSED FIELD GRADIENT NMR DATA[J]. Chinese Journal of Polymer Science, ;2002, 20(4): 317-323. shu

STUDIES ON THE SELF-DIFFUSION OF WATER ETHANOL MIXTURE IN CHITOSAN PERVAPORATION MEMBRANE WITH PULSED FIELD GRADIENT NMR DATA

Received Date: 29 April 2001
Revised Date: 20 August 2001

The self-diffesion of water, ethanol and water-ethanol mixtures in chitosan (CS) membranes crosslinked byaqueous H2SO4 solution and uncrosslinked membrane was measured using pulsed-field gradient (PFG) nuclear magneticresonance (NMR) spectroscopy to obtain the partial solubilities and self-diffusion coefficients. An attempt was made toexplain the transport properties of water and ethanol through the CS membrane. It was concluded that there are two types ofchannel water and ethanol diffusate transfer.The water was localized in the hydrophilic ionic region formed by the ionized groups,and the ethanol was localized in the hydrophobic amorphous network of the polymer.There was a good agreement between the separation factors estimated from PFG-NMR data and those obtained by pervaporation testing.
1. [1]
  Siyi Zou , Ali Hammad , Jiahao Huang , Yuzhuo Jiang , Bin Tian , Fandi Ning , Wei Li , Qinglin Wen , Xingyu Zhu , Xiaochun Zhou . Gel/nonwoven composite membrane with dual water transport pathways for controlling hydrogen production by regulating water vapor absorption and diffusion. Chinese Chemical Letters, 2026, 37(4): 111619-. doi: 10.1016/j.cclet.2025.111619
2. [2]
  Mengjiao Xie , Nadeeshani Nanayakkara , Yanbiao Liu . Pulsed electrochemistry for water decontamination: Fundamental principles and environmental application. Chinese Chemical Letters, 2026, 37(4): 111669-. doi: 10.1016/j.cclet.2025.111669
3. [3]
  Jinjie Lu , Qikai Liu , Yuting Zhang , Yi Zhou , Yanbo Zhou . Antibacterial performance of cationic quaternary phosphonium-modified chitosan polymer in water. Chinese Chemical Letters, 2024, 35(9): 109406-. doi: 10.1016/j.cclet.2023.109406
4. [4]
  Jian Wang , Baohui Wang , Pin Ma , Yifei Zhang , Honghong Gong , Biyun Peng , Sen Liang , Yunchuan Xie , Hailong Wang . Regulation of uniformity and electric field distribution achieved highly energy storage performance in PVDF-based nanocomposites via continuous gradient structure. Chinese Chemical Letters, 2025, 36(4): 109714-. doi: 10.1016/j.cclet.2024.109714
5. [5]
  Heng-Su Liu , Xi-Ming Zhang , Ge-Hao Liang , Shisheng Zheng , Jian-Feng Li . Investigation of water structure and proton transfer within confined graphene by ab initio molecule dynamics and multiscale data analysis. Chinese Journal of Structural Chemistry, 2025, 44(6): 100596-100596. doi: 10.1016/j.cjsc.2025.100596
6. [6]
  Shudi Yu , Jie Li , Jiongting Yin , Wanyu Liang , Yangping Zhang , Tianpeng Liu , Mengyun Hu , Yong Wang , Zhengying Wu , Yuefan Zhang , Yukou Du . Built-in electric field and core-shell structure of the reconstructed sulfide heterojunction accelerated water splitting. Chinese Chemical Letters, 2024, 35(12): 110068-. doi: 10.1016/j.cclet.2024.110068
7. [7]
  Yan Zou , Yin-Shuang Hu , Deng-Hui Tian , Hong Wu , Xiaoshu Lv , Guangming Jiang , Yu-Xi Huang . Tuning the membrane rejection behavior by surface wettability engineering for an effective water-in-oil emulsion separation. Chinese Chemical Letters, 2024, 35(6): 109090-. doi: 10.1016/j.cclet.2023.109090
8. [8]
  Changle Liu , Mingyuzhi Sun , Haoran Zhang , Xiqian Cao , Yuqing Li , Yingtang Zhou . All in one doubly pillared MXene membrane for excellent oil/water separation, pollutant removal, and anti-fouling performance. Chinese Journal of Structural Chemistry, 2024, 43(8): 100355-100355. doi: 10.1016/j.cjsc.2024.100355
9. [9]
  Jiawei Ge , Xian Wang , Heyuan Tian , Hao Wan , Wei Ma , Jiangying Qu , Junjie Ge . Iridium-based catalysts for oxygen evolution reaction in proton exchange membrane water electrolysis. Chinese Chemical Letters, 2025, 36(5): 109906-. doi: 10.1016/j.cclet.2024.109906
10. [10]
  Jianhong Jiang , Xianming Xia , Hongbo He . Novel vinylene-linked COF ruthenium catalyst design achieves record performance in proton exchange membrane water electrolyzers. Chinese Journal of Structural Chemistry, 2025, 44(9): 100656-100656. doi: 10.1016/j.cjsc.2025.100656
11. [11]
  Juan Zhu , Jingxiang Xia , Wei Luo . Oxophilic support mediated interfacial water reconstruction on RuO2 for high-efficiency proton exchange membrane electrolysis. Chinese Journal of Structural Chemistry, 2026, 45(4): 100857-100857. doi: 10.1016/j.cjsc.2025.100857
12. [12]
  Yayun Shi , Congcong Liu , Zhijun Zuo , Xiaowei Yang . Self-assembled ultrathick MoS₂ conductive hydrogel membrane via ionic gelation for superior capacitive energy storage. Chinese Chemical Letters, 2025, 36(6): 109772-. doi: 10.1016/j.cclet.2024.109772
13. [13]
  Changlin Su , Wensheng Cai , Xueguang Shao . Water as a probe for the temperature-induced self-assembly transition of an amphiphilic copolymer. Chinese Chemical Letters, 2025, 36(4): 110095-. doi: 10.1016/j.cclet.2024.110095
14. [14]
  Fuai Hu , Yanru Yin , Yang Li , Feifei Guo , Jianhui Liu , Zeliang Gao . Super internal electrostatic field effect on self-powered X-ray detector in ferroelectric Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystal. Chinese Journal of Structural Chemistry, 2026, 45(5): 100863-100863. doi: 10.1016/j.cjsc.2025.100863
15. [15]
  Neng Shi , Haonan Jia , Jixiang Zhang , Pengyu Lu , Chenglong Cai , Yixin Zhang , Liqiang Zhang , Nongyue He , Weiran Zhu , Yan Cai , Zhangqi Feng , Ting Wang . Accurate expression of neck motion signal by piezoelectric sensor data analysis. Chinese Chemical Letters, 2024, 35(9): 109302-. doi: 10.1016/j.cclet.2023.109302
16. [16]
  Sajid Hussain , Omer M.A. Dagah , Essam A.M.S Obaid , Peng Jin , Ovas Ahmed Dar , Muhammd Irfan , Yiming Qi , Qinghua Wu , Ming Jin , Tengli Zhang , Lei Luo . Chitosan as oral absorption enhancer and inhibitor: A comprehensive review. Chinese Chemical Letters, 2026, 37(1): 111273-. doi: 10.1016/j.cclet.2025.111273
17. [17]
  Man Wu , Chuandong Jia . A light-powered molecular pump achieving transmembrane concentration gradient. Chinese Journal of Structural Chemistry, 2025, 44(4): 100452-100452. doi: 10.1016/j.cjsc.2024.100452
18. [18]
  Yi Zhang , Xin Yao , Jiaxin Yu , Haili Qin , Huaiping Cong . Gradient crosslinking of anisotropic hydrogels for programmable shape morphing and actuation. Chinese Chemical Letters, 2026, 37(6): 112041-. doi: 10.1016/j.cclet.2025.112041
19. [19]
  Lingyao Zhang , Chunhui Zhang , Yingjia Sun , Qinglin Yang , Ziwei Guo , Xiaoqi Wang , Kang Wang , Lin Zhang , Kesong Liu , Shichao Niu , Cunming Yu , Lei Jiang . Bioinspired underwater gas diffusion enhanced by superaerophilic stripe. Chinese Chemical Letters, 2026, 37(5): 111720-. doi: 10.1016/j.cclet.2025.111720
20. [20]
  Ming-Mai Bao , Ying-Chao Liu , Hao-Nan Xu , Jing Zhang , Yin-Long Guo . Energy-resolved in-source dissociation spectra by tunable pulsed arc plasma ionization for the differentiation of structural isomers. Chinese Chemical Letters, 2026, 37(6): 112060-. doi: 10.1016/j.cclet.2025.112060

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(1638)
HTML views(26)

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