Home

Citation: LIU Wan-qiang, WANG Xue-ye, LI Xin-fang, LONG Qing-ping, WEN Xiao-hong, LI Jianjun. Quantum Chemistry-ANN Methods Study on Tg of Polyacrylates[J]. Acta Physico-Chimica Sinica, ;2005, 21(06): 596-601. doi: 10.3866/PKU.WHXB20050604 shu

Quantum Chemistry-ANN Methods Study on Tg of Polyacrylates

1.
College of Chemistry, Xiangtan University, Xiangtan 411105; Jiangsu Entry-Exit Inspection and Quarantine Bureau, Nanjing 210005

Received Date: 15 October 2004
Available Online: 15 June 2005

The mechanism and affecting factors of the glass transition for polymers have been analyzed. The structural units of thirty-eight polyacrylates have been optimized and their quantum chemical descriptors have been obtained by DFT/6-31G(d) method. The calculated results indicate that the length of side chain, number of side chains, polarizability, dipole moment, EHOMO, heat capacity at constant volume, and thermal energy are the main factors affecting glass transition temperature (Tg). The regularity of Tg for polyacrylates is discussed by the pattern recognition method (PLS) with quantum chemical descriptors as features. The two classes of polymers with different Tg distribute in different regions. The quantitative relationship have been studied between these descriptors and Tg by stepwise regression and BP-ANN(back propagation artificial neural network) methods. The correlation coefficients between the predicted and experimental Tg for the two methods are 0.9753 and 0.9985, and the standard deviations are 18.42 and results 4.25, respectively.
- Polyacrylates;Glass transition temperature;Quantum-chemical descriptors;QSPR;ANN
1. [1]
  Zijian Zhao , Yanxin Shi , Shicheng Li , Wenhong Ruan , Fang Zhu , Jijun Jiang . A New Exploration of the Preparation of Polyacrylic Acid by Free Radical Polymerization Based on the Concept of Green Chemistry. University Chemistry, 2024, 39(5): 315-324. doi: 10.3866/PKU.DXHX202311094
2. [2]
  Peng XU , Shasha WANG , Nannan CHEN , Ao WANG , Dongmei YU . Preparation of three-layer magnetic composite Fe₃O₄@polyacrylic acid@ZiF-8 for efficient removal of malachite green in water. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 544-554. doi: 10.11862/CJIC.20230239
3. [3]
  Dongju Zhang , Rongxiu Zhu . Construction of Ideological and Political Education in Quantum Chemistry Course: Several Teaching Cases to Reveal the Universal Connection of Things. University Chemistry, 2024, 39(7): 272-277. doi: 10.3866/PKU.DXHX202311032
4. [4]
  Jia Zhou . Constructing Potential Energy Surface of Water Molecule by Quantum Chemistry and Machine Learning: Introduction to a Comprehensive Computational Chemistry Experiment. University Chemistry, 2024, 39(3): 351-358. doi: 10.3866/PKU.DXHX202309060
5. [5]
  Junke LIU , Kungui ZHENG , Wenjing SUN , Gaoyang BAI , Guodong BAI , Zuwei YIN , Yao ZHOU , Juntao LI . Preparation of modified high-nickel layered cathode with LiAlO₂/cyclopolyacrylonitrile dual-functional coating. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1461-1473. doi: 10.11862/CJIC.20240189
6. [6]
  Yanxin Wang , Hongjuan Wang , Yuren Shi , Yunxia Yang . Application of Python for Visualizing in Structural Chemistry Teaching. University Chemistry, 2024, 39(3): 108-117. doi: 10.3866/PKU.DXHX202306005
7. [7]
  Zitong Chen , Zipei Su , Jiangfeng Qian . Aromatic Alkali Metal Reagents: Structures, Properties and Applications. University Chemistry, 2024, 39(8): 149-162. doi: 10.3866/PKU.DXHX202311054
8. [8]
  Jing Du , Xi Yu , Xiaofei Ma , Wentao Zhao . Artificial Intelligence & Chemistry Course Construction. University Chemistry, 2024, 39(11): 65-71. doi: 10.12461/PKU.DXHX202403072
9. [9]
  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
10. [10]
  Min Gu , Huiwen Xiong , Liling Liu , Jilie Kong , Xueen Fang . Rapid Quantitative Detection of Procalcitonin by Microfluidics: An Instrumental Analytical Chemistry Experiment. University Chemistry, 2024, 39(4): 87-93. doi: 10.3866/PKU.DXHX202310120
11. [11]
  Yinyin Qian , Rui Xu . Utilizing VESTA Software in the Context of Material Chemistry: Analyzing Twin Crystal Nanostructures in Indium Antimonide. University Chemistry, 2024, 39(3): 103-107. doi: 10.3866/PKU.DXHX202307051
12. [12]
  Qiying Xia , Guokui Liu , Yunzhi Li , Yaoyao Wei , Xia Leng , Guangli Zhou , Aixiang Wang , Congcong Mi , Dengxue Ma . Construction and Practice of “Teaching-Learning-Assessment Integration” Model Based on Outcome Orientation: Taking “Structural Chemistry” as an Example. University Chemistry, 2024, 39(10): 361-368. doi: 10.3866/PKU.DXHX202311007
13. [13]
  Tianyun Chen , Ruilin Xiao , Xinsheng Gu , Yunyi Shao , Qiujun Lu . Synthesis, Crystal Structure, and Mechanoluminescence Properties of Lanthanide-Based Organometallic Complexes. University Chemistry, 2024, 39(5): 363-370. doi: 10.3866/PKU.DXHX202312017
14. [14]
  Liuchuang Zhao , Wenbo Chen , Leqian Hu . Discussion on Improvement of Teaching Contents about Common Evaluation Parameters in Analytical Chemistry. University Chemistry, 2024, 39(2): 379-391. doi: 10.3866/PKU.DXHX202308079
15. [15]
  Ling Bai , Limin Lu , Xiaoqiang Wang , Dongping Wu , Yansha Gao . Exploration and Practice of Teaching Reforms in “Quantitative Analytical Chemistry” under the Perspective of New Agricultural Science. University Chemistry, 2024, 39(3): 158-166. doi: 10.3866/PKU.DXHX202308101
16. [16]
  Peng ZHOU , Xiao CAI , Qingxiang MA , Xu LIU . Effects of Cu doping on the structure and optical properties of Au₁₁(dppf)₄Cl₂ nanocluster. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1254-1260. doi: 10.11862/CJIC.20240047
17. [17]
  Xuan Zhou , Yi Fan , Zhuoqi Jiang , Zhipeng Li , Guowen Yuan , Laiying Zhang , Xu Hou . Liquid Gating Mechanism and Basic Properties Characterization: a New Experimental Design for Interface and Surface Properties in the Chemistry “101 Plan”. University Chemistry, 2024, 39(10): 113-120. doi: 10.12461/PKU.DXHX202407111
18. [18]
  Wenyan Dan , Weijie Li , Xiaogang Wang . The Technical Analysis of Visual Software ShelXle for Refinement of Small Molecular Crystal Structure. University Chemistry, 2024, 39(3): 63-69. doi: 10.3866/PKU.DXHX202302060
19. [19]
  Ling Zhang , Jing Kang . Turn Waste into Valuable: Preparation of High-Strength Water-Based Adhesives from Polymethylmethacrylate Wastes: a Comprehensive Chemical Experiments. University Chemistry, 2024, 39(2): 221-226. doi: 10.3866/PKU.DXHX202306075
20. [20]
  Naiying Fan , Chuanli Qin , Guo Zhang , Bin Wang , Yan Wang , Bing Zheng , Yichun Qu , Zhiyao Sun , Guanghui An . Case Design of Course Ideological and Political Education in Chemical Experiment Safety: the Safe Use of Common Laboratory Instruments and Glassware. University Chemistry, 2024, 39(2): 242-247. doi: 10.3866/PKU.DXHX202309061

Get Citation

PDF

XML

Metrics

PDF Downloads(2367)
Abstract views(3471)
HTML views(12)

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