School of Chemistry and Chemical Engineering , Yangzhou University , Yangzhou 225009 , China.
Testing Center , Yangzhou University , Yangzhou 225009 , China.
Langmuir. 2018 Jun 26;34(25):7386-7395. doi: 10.1021/acs.langmuir.8b00990. Epub 2018 Jun 15.
A strategy to the batch-scale fabrication of anisotropic particles with diverse morphologies and various chemical compositions is reported by applying the highly structured fluids of Cerberus emulsions as templates. The Cerberus emulsions are produced simply by traditional one-step vortex mixing the surfactant aqueous solution with three immiscible oils which are selectively photocurable or incurable. Anisotropic particles are subsequently fabricated by UV-induced polymerization. The diversity in the morphology of the particles is provided by the various controllable geometries of the Cerberus droplets. Various droplet morphologies of "engulfed-linear", "partial-engulfed-linear", and "linear-singlet" are obtained by employing various oil combinations. Precise control of the volume fraction of each segment within the droplet is realized on the basis of the three-phase diagram of the oils. The wide size range is achieved from hundreds of micrometers continuously down to nanometers, with topology remaining. In addition, for a matrix droplet with a fixed morphology, the multiplicity in the chemical composition and in the geometry of the resultant anisotropic particles is realized by selectively polymerizing one, two, or three of the oil lobes. Morphologies of "crescent moon", "etched-Janus", and "sandwich-Janus" are obtained with homogeneous or multiple distinct chemical compositions. The reported strategy is universal and can be extended to a huge family of polymeric anisotropic particles.
一种通过应用高度结构化的 Cerberus 乳液作为模板批量制造具有不同形貌和各种化学成分的各向异性颗粒的策略被报道。通过简单地采用传统的一步涡旋混合技术，将表面活性剂水溶液与三种不可混溶的油混合，即可制备 Cerberus 乳液，这三种油可以选择性地光聚合或不可聚合。随后通过 UV 诱导聚合来制造各向异性颗粒。颗粒的形貌多样性由 Cerberus 液滴的各种可控几何形状提供。通过使用各种油组合，可以获得“包络线”、“部分包络线”和“单线”等各种液滴形貌。基于油的三相图，可以精确控制液滴内每个段的体积分数。通过该策略可以实现从数百微米到纳米的宽尺寸范围，并且保留拓扑结构。此外，对于具有固定形貌的基质液滴，可以通过选择性聚合一个、两个或三个油叶来实现所得各向异性颗粒的化学组成和几何形状的多样性。可以获得具有均匀或多种不同化学组成的“新月形”、“刻蚀性 Janus”和“夹层 Janus”形貌。所报道的策略具有普遍性，可以扩展到巨大的聚合物各向异性颗粒家族。
