Ferrocene (Fc)-containing monomers were synthesized from ferrocene carboxylic acid and 2-hydroxyethyl acrylate as precursors, and the synthesized monomer was polymerized with ethyl 2-bromoisobutyrate by the atom transfer radical polymerization (ATRP) method. Polyacrylonitrile (PAN) precursor fibers and PAN-2-(acryloyloxy)ethyl ferrocenecarboxylate polymer (FcP) blend nanofibers were electrospun from the solution of N,N′-dimethylformamide and characterized by mechanical, spectroscopic, structural and electrochemical means. The results show that the blending of polymers with different FcP content leads to improvements in thermoelastic and electrical properties. Frequency-dependent thermomechanical characterization via dynamic mechanical analysis reveals pronounced changes in the glass transition, rubbery plateau, and onset of degradation, as well as in their storage and loss modulus values, in particular when small amounts of FcP are present. A typical double-peak structure of PAN and the characteristic FcP peaks confirm the blend structure. Comparing PAN nanofibers with PAN–FcP blend nanofibers, the increase in the amount of FcP results in an almost linear rise in contact angle and fiber diameter along with the glass transition of the polymers.

中文翻译：

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电纺聚丙烯腈/2-(丙烯酰氧基)乙基二茂铁羧酸聚合物共混纳米纤维

以二茂铁羧酸和丙烯酸2-羟乙酯为前驱体合成含二茂铁(Fc)单体，通过原子转移自由基聚合(ATRP)法将合成单体与2-溴异丁酸乙酯聚合。聚丙烯腈 (PAN) 前体纤维和 PAN-2-(丙烯酰氧基) 乙基二茂铁羧酸聚合物 (FcP) 共混纳米纤维由N , N '-二甲基甲酰胺溶液电纺而成，并通过机械、光谱、结构和电化学手段进行表征。结果表明，将具有不同FcP含量的聚合物共混可改善热弹性和电性能。频率相关的热特性通过动态力学分析揭示了玻璃化转变、橡胶状平台和降解开始的显着变化，以及它们的储存和损耗模量值，特别是当存在少量 FcP 时。PAN 的典型双峰结构和特征性 FcP 峰证实了混合结构。将 PAN 纳米纤维与 PAN-FcP 混合纳米纤维进行比较，FcP 量的增加导致接触角和纤维直径随着聚合物的玻璃化转变几乎线性增加。