| Preparation and Structure of Hydrosilated Trans-1，4-polyisoprene |
| Received:March 31, 2017 Revised:March 31, 2017 |
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| Key Words: trans-1，4-polyisoprene；hydrosilation；preparation；structure |
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| Abstract: |
| The preparation and structure of Hydrosilated trans-1，4-polyisoprene（HsTPI） were studied.The best hydrosilylation process of trans-1，4-polyisoprene（TPI） was obtained：the reaction temperature was 105 ℃，the reaction time was 12 h，catalyst relative TPI mass fraction was 0.07，the molar concentration of three ethyl silane and vinyl of TPI was equal.Confirmed triethyl silicane group was grafted into TPI C—C main molecular chain after characteristic analysis on hydrosilated TPI（HsTPI） by using 1H-NMR and Si-NMR.The thermogravimetric analysis showed that the decomposition temperature of HsTPI gradually increased along with degree of hydrosilation increasing.The thermal mass loss changed from one stage of TPI to two stage.Glass-transition temperature increased along with degree of hydrosilation increasing from the spectrogram of DSC.X-ray diffraction analysis showed that with the increase of the degree of hydrogenated silicon，the crystal form of HsTPI changed and the crystallization ability became smaller.The mechanical properties of HsTPI became worse with the increase of degree of hydrosilation. |
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