Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Ministry of Education, School of Science, ‡State Key Laboratory of Electrical Insulation and Power Equipment, and §School of Science, Xi'an Jiaotong University , Xi'an, 710049, People's Republic of China.
Langmuir. 2014 Feb 25;30(7):1741-7. doi: 10.1021/la404808x. Epub 2014 Feb 11.
As compared to the traditional solid Janus particles, the hollow Janus particles have inspired growing interests due to their diverse potential applications. Herein, the novel hollow Janus particles with elephant trunk-like and acorn-like shapes were prepared by seed emulsion polymerization. In contrast to traditional template methods, the hollow structure was obtained during the preparation by one-step swelling method. The shapes and internal structures of hollow Janus particles were confirmed, and the compositions were identified too. Some critical influences on the morphology control were investigated, that is, the surface modification, the amount of surfactant, and cross-linking agent concentrations. It was inferred that the balance of hydrophilicity and hydrophobicity and the effective phase separation were important for preparing the hollow Janus particles with tailored shapes. Finally, amphiphilic properties of hollow Janus particles were demonstrated by emulsifying oil-water mixture.
与传统的实心 Janus 粒子相比，空心 Janus 粒子由于其多样化的潜在应用而引起了越来越多的关注。在此，通过种子乳液聚合法制备了具有象鼻状和橡果状的新型空心 Janus 粒子。与传统的模板法相比，通过一步溶胀法在制备过程中获得了空心结构。对空心 Janus 粒子的形状和内部结构进行了确认，并对其组成进行了鉴定。研究了一些对形态控制的关键影响因素，即表面改性、表面活性剂用量和交联剂浓度。可以推断，亲水性和疏水性的平衡以及有效的相分离对于制备具有定制形状的空心 Janus 粒子是很重要的。最后，通过乳化油水混合物证明了空心 Janus 粒子的两亲性。
