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Synthesis and Gas Permeation Parameters of Metathesis Polytricyclononenes with Pendant Me3E-groups (E = C, Si, Ge)

机译:侧链Me3E-基(E = C,Si,Ge)的复分解聚三环壬烯的合成和气体渗透参数

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Metathesis polytricyclononenes were synthesized via ROMP polymerization in the presence of the 1-st generation Grubbs catalyst and their gas-transport properties were studied for the first time. The aim of this work was to evaluate the influence of Me3E-groups (E=C, Si, Ge) on gas permeation parameters of ROMP materials. New metathesis poly(3-tert-butyltricyclononene-7) and poly(3-trimethylgermyltricyclononene-7) were obtained with high yields (up to 95%) and high-molecular weights (M-w approximate to 3-7x10(5) g mol(-1)). The glass transition temperatures of the ROMP polytricyclononenes with Me3E-groups decreased when E was changed from C to Si and then to Ge. It was shown that the polytricyclononene containing Me3Si-groups has the highest gas permeability while the polytricyclononene containing Me3C-substituents has the lowest gas permeability. In addition, the gas permeation parameters were estimated for ROMP Me3Si- and Me3Ge-substituted polytricyclonona-3,7-dienes. So the influence of the second double bond in the monomer units on the permeability of the polymers obtained was studied. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41395.
机译:在第一代Grubbs催化剂的存在下,通过ROMP聚合反应合成了易位的聚三环壬烯,并首次研究了其气体传输性能。这项工作的目的是评估Me3E-基团(E = C,Si,Ge)对ROMP材料的气体渗透参数的影响。以高收率(高达95%)和高分子量(Mw大约3-7x10(5)g mol( -1))。当E从C变为Si,然后变为Ge时,具有Me3E-基团的ROMP聚三环壬烯的玻璃化转变温度降低。结果表明,含Me3Si基的聚三环壬烯具有最高的透气性,而含Me3C取代基的聚三环壬烯具有最低的透气性。另外,估计了ROMP Me3Si和Me3Ge取代的聚三环酮-3,7-二烯的气体渗透参数。因此,研究了单体单元中第二个双键对所得聚合物渗透性的影响。 (c)2014 Wiley Periodicals,Inc. J. Appl。 Polym。科学2015,132,41395。

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