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Epoxidized 1,4-polymyrcene
Polymer Chemistry ( IF 4.6 ) Pub Date : 2020/01/02 , DOI: 10.1039/c9py01783f Aleksandar Matic 1, 2, 3, 4 , Andreas Hess 1, 2, 3, 4 , Dirk Schanzenbach 1, 2, 3, 4 , Helmut Schlaad 1, 2, 3, 4
Polymer Chemistry ( IF 4.6 ) Pub Date : 2020/01/02 , DOI: 10.1039/c9py01783f Aleksandar Matic 1, 2, 3, 4 , Andreas Hess 1, 2, 3, 4 , Dirk Schanzenbach 1, 2, 3, 4 , Helmut Schlaad 1, 2, 3, 4
Affiliation
1,4-Polymyrcene was synthesized by anionic polymerization and epoxidized using meta-chloroperbenzoic acid. Samples with different degrees of epoxidation (25%, 49%, 74%, and 98%) were prepared and examined according to their chemical and thermal properties. Epoxidation was found to increase the glass transition temperature (Tg = 14 °C for the 98% epoxidized 1,4-polymyrcene) as well as the shelf live (>10 months). The trisubstituted epoxide groups were remarkably stable against nucleophiles under basic conditions but cross-linked or hydrolyzed in the presence of an acid. Also, highly epoxidized 1,4-polymyrcene readily cross-linked upon annealing at 260 °C to produce an epoxy resin.
中文翻译:
环氧1,4-聚月桂烯
通过阴离子聚合合成1,4-聚月桂烯,并使用间-氯过苯甲酸环氧化。制备了具有不同环氧化程度(25%,49%,74%和98%)的样品,并根据其化学和热学性质对其进行了检查。发现环氧化会提高玻璃化转变温度(对于98%环氧化的1,4-聚月桂烯,T g = 14°C)以及保质期(> 10个月)。三取代的环氧基在碱性条件下对亲核试剂具有显着的稳定性,但是在酸的存在下交联或水解。另外,高度环氧化的1,4-聚月桂烯在260℃退火时容易交联以产生环氧树脂。
更新日期:2020-02-19
中文翻译:
环氧1,4-聚月桂烯
通过阴离子聚合合成1,4-聚月桂烯,并使用间-氯过苯甲酸环氧化。制备了具有不同环氧化程度(25%,49%,74%和98%)的样品,并根据其化学和热学性质对其进行了检查。发现环氧化会提高玻璃化转变温度(对于98%环氧化的1,4-聚月桂烯,T g = 14°C)以及保质期(> 10个月)。三取代的环氧基在碱性条件下对亲核试剂具有显着的稳定性,但是在酸的存在下交联或水解。另外,高度环氧化的1,4-聚月桂烯在260℃退火时容易交联以产生环氧树脂。