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Dual-compartment nanofibres: separation of two highly reactive components in close vicinity

机译：双隔室纳米纤维：在近距离分离两个高反应性组分

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Dual-compartment nanofibres separating two highly reactive components in close vicinity are investigated. The study is intended as a non-classical approach for the control of reaction latency in colloidal systems. An epoxide resin and a hydrophobic polyamine which react readily at low temperatures are chosen as model compounds. Colloid electrospinning with PVA as the confining matrix is used for the immobilization of both in separate compartments. Uniform fibres are produced with a matrix/colloid weight ratio of 3/1. The internal fibre morphology was investigated via dual-colour stimulated emission depletion (STED) microscopy and TEM. The results show a statistical distribution of epoxy- and amine-containing compartments and indicate average particle–particle distances of <100 nm, which is supported by computations. The fibres are highly storage stable under ambient conditions and yet allow for efficient crosslinking and self-healing. The curing reaction can be initiated via thermal or mechanical stimuli, as demonstrated by electron microscopy and electrochemical testing of fibre containing coatings. The reactivity and latency for reaction is furthermore proven by calorimetric and chromatographic methods.
机译：研究了分离近距离附近的两个高反应性组分的双隔室纳米纤维。该研究旨在控制胶体系统中反应潜伏期的非古典方法。选择环氧树脂和疏水性多胺，其在低温下易于反应为模型化合物。用PVA电胶体静电纺丝作为限制基质用于固定在单独的隔间中的固定。用基质/胶体重量比为3/1产生均匀的纤维。通过双色刺激发射耗尽（STED）显微镜和TEM来研究内部纤维形态。结果显示了含环氧和胺和胺隔室的统计分布，并表示通过计算支持的<100nm的平均粒子粒子距离。纤维在环境条件下具有高度储存稳定，但允许有效交联和自我愈合。固化反应可以通过热或机械刺激引发，如电子显微镜和含纤维涂料的电化学检测所证明的那样。反应的反应性和潜伏期进一步通过量热和色谱法证明。

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