Home

Citation: DONG Yan-ming, RUAN Yong-hong, ZHAO Ya-qing, BI Dan-xia, YANG Liu-lin, GE Qiang. Studies on Glass Transition Temperature ofNl Chitosan[J]. Acta Physico-Chimica Sinica, ;2005, 21(11): 1307-1310. doi: 10.3866/PKU.WHXB20051123 shu

Studies on Glass Transition Temperature ofNl Chitosan

1.
State Key Laboratory of Physical Chemistry of Solid Surface, Departement of Materials Science and Engineering, Xiamen University, Xiamen 361005

Received Date: 4 April 2005
Available Online: 15 November 2005

The glass transition behaviors of N-alkyl chitosan were investigated by means of differential scanning calorimetry (DSC) and thermally stimulated current (TSC) spectroscopy. In DSC measurements, the second heating run was used to eliminate the effect of solvents and heat history on glass transition temperature (Tg), and also physical aging was used to improve the sensitivity of Tg measurements by enhancing the enthalpy endothermal peaks. The results of two techniques showed that the glass transition temperatures of three N-alkyl chitosans were all within 110~150 ℃. When the length of flexible side-alkyl groups was larger, the transition points shifted to lower temperature. But N-methyl chitosan is an exception, its Tg is slightly higher than chitosan because of the steric hindrance of side group.
- Chitosan;N-alkyl chitosan;Glass transition temperature;Physical aging;DSC;TSC
1. [1]
  Dong-Bing Cheng , Junxin Duan , Haiyu Gao . Experimental Teaching Design on Chitosan Extraction and Preparation of Antibacterial Gel. University Chemistry, 2024, 39(2): 330-339. doi: 10.3866/PKU.DXHX202308053
2. [2]
  Shiyan Cheng , Yonghong Ruan , Lei Gong , Yumei Lin . Research Advances in Friedel-Crafts Alkylation Reaction. University Chemistry, 2024, 39(10): 408-415. doi: 10.12461/PKU.DXHX202403024
3. [3]
  Xu Liu , Chengfang Liu , Jie Huang , Xiangchun Li , Wenyong Lai . Research on the Application of Diversified Teaching Models in the Teaching of Physical Chemistry. University Chemistry, 2024, 39(8): 112-118. doi: 10.3866/PKU.DXHX202402021
4. [4]
  Ruming Yuan , Laiying Zhang , Xiaoming Xu , Pingping Wu , Gang Fu . Application of Mathematica in Visualizing Physical Chemistry Formulas. University Chemistry, 2024, 39(8): 375-382. doi: 10.3866/PKU.DXHX202401030
5. [5]
  Xiaofeng Xia , Jielian Zhu . Innovative Comprehensive Experimental Design: Synthesis of 6-Fluoro-N-benzoyl Tetrahydroquinoline. University Chemistry, 2024, 39(10): 344-352. doi: 10.12461/PKU.DXHX202405063
6. [6]
  Lirui Shen , Kun Liu , Ying Yang , Dongwan Li , Wengui Chang . Synthesis and Application of Decanedioic Acid-N-Hydroxysuccinimide Ester: Exploration of Teaching Reform in Comprehensive Applied Chemistry Experiment. University Chemistry, 2024, 39(8): 212-220. doi: 10.3866/PKU.DXHX202312035
7. [7]
  Junjun Huang , Ran Chen , Yajian Huang , Hang Zhang , Anran Zheng , Qing Xiao , Dan Wu , Ruxia Duan , Zhi Zhou , Fei He , Wei Yi . Discovery of an enantiopure N-[2-hydroxy-3-phenyl piperazine propyl]-aromatic carboxamide derivative as highly selective α_1D/1A-adrenoceptor antagonist and homology modelling. Chinese Chemical Letters, 2024, 35(11): 109594-. doi: 10.1016/j.cclet.2024.109594
8. [8]
  Yanglin Jiang , Mingqing Chen , Min Liang , Yige Yao , Yan Zhang , Peng Wang , Jianping Zhang . Experimental and Theoretical Investigations of Solvent Polarity Effect on ESIPT Mechanism in 4′-N,N-diethylamino-3-hydroxybenzoflavone. Acta Physico-Chimica Sinica, 2025, 41(2): 100012-. doi: 10.3866/PKU.WHXB202309027
9. [9]
  Tongqi Ye , Qi Wang , Yuewen Ye , Yanqing Wang , Hongyang Zhou , Xianghua Kong . Reflection on the Reform of Physical Chemistry Teaching under the Background of “Intelligent Chemical Engineering”. University Chemistry, 2024, 39(3): 167-173. doi: 10.3866/PKU.DXHX202308116
10. [10]
  Hongmei Zhao , Ziqiang Lu , Song Li , Xingyu Li , Chengting Zi , Xingli Fan , Xiangdong Qin . Exploration and Practice of Physical Chemistry Teaching under the Guidance of Course Ideological and Political Education. University Chemistry, 2024, 39(3): 210-217. doi: 10.3866/PKU.DXHX202309006
11. [11]
  Youjun Fan , Dandan Cai , Wei Chen , Jianhua Qiu . Exploration and Practice of Ideological and Political Education Reform in Physical Chemistry Experiment. University Chemistry, 2024, 39(4): 119-124. doi: 10.3866/PKU.DXHX202310123
12. [12]
  Bing Sun . Practice of Ideological and Political Education in Physical Chemistry Courses for Non-Chemistry Majors. University Chemistry, 2024, 39(8): 28-35. doi: 10.3866/PKU.DXHX202311080
13. [13]
  Jianmin Hao , Ruifeng Wu , Ying Wang , Yijia Bai , Xuechuan Gao , Yuying Du . Reform and Practice of Physical Chemistry Course Based on Enhanced Process Assessment and Evaluation. University Chemistry, 2024, 39(8): 78-83. doi: 10.3866/PKU.DXHX202311103
14. [14]
  Congyi Wu . Advice for Young Teachers to Promote Teaching Level of Physical Chemistry. University Chemistry, 2024, 39(11): 15-19. doi: 10.3866/PKU.DXHX202402054
15. [15]
  Guangming YIN , Huaiyao WANG , Jianhua ZHENG , Xinyue DONG , Jian LI , Yi'nan SUN , Yiming GAO , Bingbing WANG . Preparation and photocatalytic degradation performance of Ag/protonated g-C₃N₄ nanorod materials. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1491-1500. doi: 10.11862/CJIC.20240086
16. [16]
  Yeyun Zhang , Ling Fan , Yanmei Wang , Zhenfeng Shang . Development and Application of Kinetic Reaction Flasks in Physical Chemistry Experimental Teaching. University Chemistry, 2024, 39(4): 100-106. doi: 10.3866/PKU.DXHX202308044
17. [17]
  Jia Yao , Xiaogang Peng . Theory of Macroscopic Molecular Systems: Theoretical Framework of the Physical Chemistry Course in the Chemistry “101 Plan”. University Chemistry, 2024, 39(10): 27-37. doi: 10.12461/PKU.DXHX202408117
18. [18]
  Qiaowen CHANG , Ke ZHANG , Guangying HUANG , Nuonan LI , Weiping LIU , Fuquan BAI , Caixian YAN , Yangyang FENG , Chuan ZUO . Syntheses, structures, and photo-physical properties of iridium phosphorescent complexes with phenylpyridine derivatives bearing different substituting groups. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 235-244. doi: 10.11862/CJIC.20240311
19. [19]
  Yangwu Fu , Chuanbo Hu , Shuhong Chen . Teaching Reform and Practice of Physical Chemistry in Local Universities under the Background of Emerging Engineering Education. University Chemistry, 2025, 40(3): 237-244. doi: 10.12461/PKU.DXHX202406040
20. [20]
  Yongmin Zhang , Shuang Guo , Mingyue Zhu , Menghui Liu , Sinong Li . Design and Improvement of Physicochemical Experiments Based on Problem-Oriented Learning: a Case Study of Liquid Surface Tension Measurement. University Chemistry, 2024, 39(2): 21-27. doi: 10.3866/PKU.DXHX202307026

Get Citation

PDF

XML

Metrics

PDF Downloads(2840)
Abstract views(3844)
HTML views(16)

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