Two kinds of difunctionalized isosorbide derivatives containing norbornene groups were designed and synthesized by a facile one-step reaction under mild conditions.~1H NMR spectroscopy confirmed the chemical compositi...Two kinds of difunctionalized isosorbide derivatives containing norbornene groups were designed and synthesized by a facile one-step reaction under mild conditions.~1H NMR spectroscopy confirmed the chemical composition and differential scanning calorimetry（DSC） revealed the distinct curing behaviors between conventional petroleum-based dicyclopentadiene（DCPD） and synthesized renewable isosorbided-based monomer（ISN）. In contrast to DCPD, ISN was low viscous liquid at room temperature and had even higher reactivity to perform ring-opening metathesis polymerization（ROMP） in the presence of Grubbs＇ catalyst. Due to the presence of flexible and elastic Si–C long chains, the cured poly（ISN） thermosets not only had good mechanical properties but also exhibited much higher storage modulus at the rubbery state in comparison with traditional poly（DCPD）.展开更多
基金National Natural Science Foundation of China (No. 51503181)Foundation of Educational Committee of Zhejiang Province of China (No. Y201225071)Ningbo Natural Science Foundation of China (Nos. 2013A610135, 2015A610092, 2015A610100) for financial support
文摘Two kinds of difunctionalized isosorbide derivatives containing norbornene groups were designed and synthesized by a facile one-step reaction under mild conditions.~1H NMR spectroscopy confirmed the chemical composition and differential scanning calorimetry（DSC） revealed the distinct curing behaviors between conventional petroleum-based dicyclopentadiene（DCPD） and synthesized renewable isosorbided-based monomer（ISN）. In contrast to DCPD, ISN was low viscous liquid at room temperature and had even higher reactivity to perform ring-opening metathesis polymerization（ROMP） in the presence of Grubbs＇ catalyst. Due to the presence of flexible and elastic Si–C long chains, the cured poly（ISN） thermosets not only had good mechanical properties but also exhibited much higher storage modulus at the rubbery state in comparison with traditional poly（DCPD）.
