| POLYMERS AND POLYMER MATRIX COMPOSITES |
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The Interactions Between Anionically Synthesized POSS End-functionalized
Polybutadiene and Filled Silica |
| LIAO Mingyi, SONG Yating
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| Department of Materials Science and Engineering, Transportation Engineering College, Dalian Maritime University, Dalian 116026 |
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Abstract Chloropropyl heptaisobutyl polyhedral oligomeric silsesquioxane (Cl-POSS) end-functionalized polybutadiene (PB-POSS) has been synthesized using Cl-POSS as terminator through a living anionic polymerization process. Subsequently a series of PB-POSS composites filled with silica (SiO2) were prepared by solvent method. The effect of the molecular weight of PB-POSS, the content of silica and the content of Si69 coupling agent on the bound rubber content of PB-POSS were investigated. The results showed that the bound rubber content of all PB-POSS samples were much higher than that of PB. When the molecular weight of PB-POSS, the content of silica and the content of Si69 coupling agent were 50 000,50 phr and 2.5 phr, respectively, the bound rubber content reached the maximum value of 17.50%, more than twice as that of the pure PB. The interaction mechanism between PB-POSS and silica was studied by FTIR confirmed obvious red shift of the absorption peaks of Si-OH bond and significant increment of Si-OH absorption peak intensity, with increasing silica or Si69 content. Both of the red shift and the intensity increment can be considered to be coincide with increasing bound rubber content, thus demonstrating that there exists strong hydrogen bonding interaction between silica and PB-POSS.
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Published: 31 January 2019
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| Fund:This work was financially supported by the National Natural Science Foundation of China-China National Petroleum Corporation (U1462108). |
| About author:: Mingyi Liao obtained his B.E. degree in polymer che-mical technology from the Dalian Institute of Technology and Ph.D. degree in chemistry from the Russian Moscow institute of fine chemical technology in 1988—1993. He is currently a professor and doctoral supervisor. He has implemented 15 projects of National Natural Science Foundation, the International Science & Technology Cooperation Program of China, Intergovernmental cooperation projects of the ministry of science and technology, etc. He has published more than 170 academic papers and 2 textbooks: Science of Synthetic Polymer Materials and Polymer Structure and Performance, applied 30 national invention patents. His research interests are rubber synthesis, preparation and application of liquid fluororubber, preparation of polymer/Inorganic nanocomposite and so on. |
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2019, Vol. 33 
