Home

Citation: LIU YU-CHENG, WU SHUAN-CHIH, NAI SI-CONG, YU YU-ZHENG. STUDIES ON CONJUGATED POLYMERSⅢ. THE THERMAL POLYMERIZATION OF PHENYLACETYLENE[J]. Acta Polymerica Sinica, ;1964, 6(6): 446-452. shu

STUDIES ON CONJUGATED POLYMERSⅢ. THE THERMAL POLYMERIZATION OF PHENYLACETYLENE

Received Date: 29 April 1964

A study of the effect of temperature on the molecular weight of polyphenyl-acetylene in the thermal polymerization of phenylacetylene for 1．5，6 and 1 0 hours has been undertaken．The results obtained showed．in the temperature range between 150°and 500°，the average molecular weight of the polymer gradually decreased as the tem-perature increased，indicating that degradation of the polymer occurred at higher tempera-ture．The infrared spectra showed that the absorption bands of the polymer obtained at 400。were smaller than that of the polymer obtained at 200°，while the polymer ob-mined at 500°showed no noticeable absorption bands but rather a continuous absorption at an enhanced level(“background effect”)，The ratio of carbon and hydrogen content of the polymers also increased as the temperature of polymerization was raised．These results，in conjunction with the fact that the polymers obtained above 300°showed a dis-tinct fluorescence in solution，are taken to indicate that polyphenylacetylene underwent structural changes at higher temperature and there was，besides degradation to sinail frag-ments，probably also cyclizadon，dehydrogenation，and aromatization，thus converting the chain structure to condensed ring system and thence to three dimensional conjugated sys-tem．The determination of the electron spin resonance of the polymers showed that the concentration of free radicals in the polyphenylacetylene increased in the following order：300°polymer<400°polymer<500°polymer．
1. [1]
  Lilong Gao , Yuhao Zhai , Dongdong Zhang , Linjun Huang , Kunyan Sui . Exploration of Thiol-Ene Click Polymerization in Polymer Chemistry Experiment Teaching. University Chemistry, 2025, 40(4): 87-93. doi: 10.12461/PKU.DXHX202405143
2. [2]
  Wenbing Hu , Jin Zhu . Flipped Classroom Approach in Teaching Professional English Reading and Writing to Polymer Graduates. University Chemistry, 2024, 39(6): 128-131. doi: 10.3866/PKU.DXHX202310015
3. [3]
  Wen-Bing Hu . Systematic Introduction of Polymer Chain Structures. University Chemistry, 2025, 40(4): 15-19. doi: 10.3866/PKU.DXHX202401014
4. [4]
  Yuhui Yang , Jintian Luo , Biao Zuo . A Teaching Approach to Polymer Surface and Interface in Undergraduate Polymer Physics Courses. University Chemistry, 2025, 40(4): 126-130. doi: 10.12461/PKU.DXHX202408056
5. [5]
  Laiying Zhang , Yinghuan Wu , Yazi Yu , Yecheng Xu , Haojie Zhang , Weitai Wu . Innovation and Practice of Polymer Chemistry Experiment Teaching for Non-Polymer Major Students of Chemistry: Taking the Synthesis, Solution Property, Optical Performance and Application of Thermo-Sensitive Polymers as an Example. University Chemistry, 2024, 39(4): 213-220. doi: 10.3866/PKU.DXHX202310126
6. [6]
  Chunyang Bao , Ruoxuan Miao , Yuhan Ding , Qingfu Ban , Yusheng Qin , Jie Liu , Zhirong Xin . The Comprehensive Experiment Design of Preparation of Depolymerizable Thermosetting Polymers. University Chemistry, 2025, 40(4): 59-65. doi: 10.12461/PKU.DXHX202405087
7. [7]
  Pingsheng He , Haiyang Yang , Pingping Zhu . Philosophical Reflections in Polymer Physics Course: Emphasizing Reverse Thinking. University Chemistry, 2025, 40(4): 27-32. doi: 10.3866/PKU.DXHX202403029
8. [8]
  Hujun Qian , Rui Shi , Guanglu Wu , Xuanbo Zhu . A Preliminary Study on the Development of a Virtual Simulation Platform for Polymer Physics Teaching and Its Teaching Practice. University Chemistry, 2025, 40(4): 147-153. doi: 10.12461/PKU.DXHX202409009
9. [9]
  Pingping Zhu , Qiang Zhou , Yu Huang , Haiyang Yang , Pingsheng He , Shiyan Xiao . Design and Practice of Ideological and Political Cases in the Course of Polymer Physics Experiments: Molecular Weight Determination of Polymers by Dilute Solution Viscosity Method as an Example. University Chemistry, 2025, 40(4): 94-99. doi: 10.12461/PKU.DXHX202405170
10. [10]
  Yi Li . Exploring the New Teaching Mode of the General Education of Polymer Science by Integrating Aesthetics, Ideological and Political Ideas: Teaching Practice of the General Education Course “Appreciation of Aesthetics in the Polymer World”. University Chemistry, 2025, 40(4): 20-26. doi: 10.12461/PKU.DXHX202402031
11. [11]
  Chengyi Xiao , Xiaoli Sun , Chen Zhang , Weiwei Li . An In-Depth Analysis of the Scientific Connotations, Testing Methods, and Applications of Free Volume in Polymer Physics. University Chemistry, 2025, 40(4): 33-45. doi: 10.12461/PKU.DXHX202403069
12. [12]
  Xiaoyu Cao , Wenchang Ke , Xin Tian , Luxuan Lin , Yiru Zhuo , Xinhang Li , Dongxu Chen , ChunhuiWu , Yu Pei , Jiaxing Yin , Xiaohui Zhang , Xuegao Qin , Jiangyi Zhou , Baoqiang Su , Pingping Zhu . Polymers from the Perspective of Students: A Debate on “Is White Pollution the Fault of Plastics?”. University Chemistry, 2025, 40(4): 160-165. doi: 10.12461/PKU.DXHX202412106
13. [13]
  Qi Wang , Yicong Gao , Feng Lu , Quli Fan . Preparation and Performance Characterization of the Second Near-Infrared Phototheranostic Probe: A New Design and Teaching Practice of Polymer Chemistry Comprehensive Experiment. University Chemistry, 2024, 39(11): 342-349. doi: 10.12461/PKU.DXHX202404141
14. [14]
  Wenjun Yang , Qiaoling Tan , Wenjiao Xie , Xiaoyu Pan , Youyong Yuan . Construction and Characterization of Calcium Alginate Microparticle Drug Delivery System: A Novel Design and Teaching Practice in Polymer Experiments. University Chemistry, 2025, 40(3): 371-380. doi: 10.12461/PKU.DXHX202405150
15. [15]
  Lijun Huo , Mingcun Wang , Tianyi Zhao , Mingjie Liu . Exploration of Undergraduate and Graduate Integrated Teaching in Polymer Chemistry with Aerospace Characteristics. University Chemistry, 2024, 39(6): 103-111. doi: 10.3866/PKU.DXHX202312059
16. [16]
  Feng Zheng , Ruxun Yuan , Xiaogang Wang . “Research-Oriented” Comprehensive Experimental Design in Polymer Chemistry: the Case of Polyimide Aerogels. University Chemistry, 2024, 39(10): 210-218. doi: 10.12461/PKU.DXHX202404027
17. [17]
  Bei Liu , Heng Li , Mei Yang , Yijiang Liu . Teaching Reform and Exploration in Polymer Chemistry with an “Experiment-Intensified” Approach for Masters in Materials and Chemical Engineering. University Chemistry, 2025, 40(4): 10-14. doi: 10.3866/PKU.DXHX202401010
18. [18]
  Xuejun Lai , Anqiang Zhang , Tao Wang , Shuizhu Wu , Guangzhao Zhang . Construction and Practice of the First-Class Undergraduate Education Program for Polymer Materials and Engineering Major Students with “Solid Foundation, Strong Capability and High Potential”. University Chemistry, 2025, 40(4): 119-125. doi: 10.12461/PKU.DXHX202407012
19. [19]
  Pingping Zhu , Yongjun Xie , Yuanping Yi , Yu Huang , Qiang Zhou , Shiyan Xiao , Haiyang Yang , Pingsheng He . Excavation and Extraction of Ideological and Political Elements for the Virtual Simulation Experiments at Molecular Level: Taking the Project “the Simulation and Computation of Conformation, Morphology and Dimensions of Polymer Chains” as an Example. University Chemistry, 2024, 39(2): 83-88. doi: 10.3866/PKU.DXHX202309063
20. [20]
  Zeyi Yan , Ruitao Liu , Xinyu Qi , Yuxiang Zhang , Lulu Sun , Xiangyuan Li , Anchao Feng . Exploration of Suspension Polymerization: Preparation and Fluorescence Stability of Perovskite Polystyrene Microbeads. University Chemistry, 2025, 40(4): 72-79. doi: 10.12461/PKU.DXHX202405110

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(79)
HTML views(0)

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