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Reversible Addition-Fragmentation Chain Transfer Polymerization of Acrylonitrile under Irradiation of Blue LED Light

机译:蓝光照射下丙烯腈的可逆加成-断裂链转移聚合

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摘要

Compared to unhealthy UV or γ-ray and high-energy-consumption thermal external stimuli, the promising light emitting diode (LED) external stimulus has some outstanding technological merits such as narrow wavelength distribution, low heat generation and energy consumption, and safety for human beings. In this work, a novel reversible addition-fragmentation transfer (RAFT) polymerization system for acrylonitrile (AN) was developed under the irradiation of blue LED light at room temperature, using 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) as a novel radical initiator and 2-cyanoprop-2-yl-1-dithionaphthalate (CPDN) as the typical chain transfer agent. Well-defined polyacrylonitrile (PAN) with a controlled molecular weight and narrow molecular weight distribution was successfully synthesized. This strategy may provide another effective method for scientific researchers or the industrial community to synthesize a PAN-based precursor of carbon fibers.
机译:与不健康的UV或γ射线和高能耗的热外部刺激相比,有前途的发光二极管(LED)外部刺激具有一些突出的技术优点,例如波长分布窄,发热和能量消耗低以及对人体安全众生。在这项工作中,使用1,2,3,5-四(咔唑-9-基)在室温下蓝色LED的照射下,开发了用于丙烯腈(AN)的新型可逆加成-片段转移(RAFT)聚合系统)-4,6-二氰基苯(4CzIPN)作为新型自由基引发剂,2-氰基丙-2-基-1-二硫代萘二酸酯(CPDN)作为典型的链转移剂。成功地合成了分子量可控且分子量分布窄的聚丙烯腈(PAN)。该策略可能为科学研究人员或工业界提供另一种有效的方法来合成基于PAN的碳纤维前体。

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