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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and thermal properties of bismaleate and bisfumarate telechelic oligomers from hydroxytelechelic polybutadienes
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Synthesis and thermal properties of bismaleate and bisfumarate telechelic oligomers from hydroxytelechelic polybutadienes

机译：羟基telechelic聚丁二烯的双马来酸酯和双富马酸酯远螯低聚物的合成及热性能

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摘要

The preparation of original telechelic bismaleate and bisfumarate polybutadienes and their thermal properties are presented. These functional oligomers were synthesized by the esterification of a hemiester of maleic anhydride and methanol or an ethyl hemiester fumarate with hydroxytelechelic polybutadiene (HTPBd) in 94 and 63% yields, respectively. The thermal and thermomechanical properties of the materials obtained from the radical copolymerization of these telechelic bismaleate and bisfumarate polybutadienes with hexane-1,6-dimethacrylate (HDDMA) were investigated and compared to those of a classic polyurethane (PU) resin prepared from HTPBd and hexamethylene diisocyanate. Calorimetry identified only one glass transition temperature of -75degreesC assigned to the polybutadienic backbone for all three resins, while a second transition at 48degreesC attributed to the methacrylate network and was noted by thermomechanical analysis. Both bismaleate and bisfumarate oligomers led to materials having a slightly better thermal stability than that of the PU resin. Thermomechanical analyses indicated that the elastic moduli of the materials achieved from bismaleate and bisfumarate oligomers are higher than that of the PU resin, whatever the temperature. (C) 2003 Wiley Periodicals, Inc. [References: 23]
机译：介绍了原始螯合双马来酸酯和双富马酸酯聚丁二烯的制备及其热性能。这些功能性低聚物通过马来酸酐和甲醇的半酯或富马酸酯的乙基半酯富马酸酯与羟基telechelic聚丁二烯（HTPBd）的酯化反应合成，产率分别为94％和63％。研究了将这些远螯双马来酸酯和双富马酸酯聚丁二烯与1,6-二甲基丙烯酸己烷（HDDMA）自由基共聚获得的材料的热和热机械性能，并将其与由HTPBd和六亚甲基酯制得的经典聚氨酯（PU）树脂进行比较二异氰酸酯。量热法仅确定了对所有三种树脂的聚丁二烯主链的一个玻璃化转变温度为-75摄氏度，而在48摄氏度的第二个转变温度归因于甲基丙烯酸酯网络，并且通过热机械分析指出。双马来酸酯和双富马酸酯低聚物均导致材料具有比PU树脂的热稳定性稍好的材料。热力学分析表明，无论温度如何，双马来酸酯和双富马酸酯低聚物获得的材料的弹性模量均高于PU树脂。 （C）2003 Wiley Periodicals，Inc. [参考：23]

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