Bauer Adam J P, Zeng Tingying, Liu Jianzhao, Uthaisar Chananate, Li Bingbing
Department of Chemistry, Science of Advanced Materials Doctoral Program, Central Michigan University, Mount Pleasant, MI, 48859, USA.
Macromol Rapid Commun. 2014 Apr;35(7):715-20. doi: 10.1002/marc.201400032. Epub 2014 Mar 10.
This paper reports the use of polyhedral oligomeric silsesquioxane (POSS)-based copolymers to stabilize the core/shell interface for the facile fabrication of electrospun core/shell fibers. For the poly[(propylmethacryl-heptaisobutyl-polyhedral oligomeric silsesquioxane)-co-(methyl methacrylate)] (POSS-MMA)/poly(ε-caprolactone) (PCL) system, the bicontinuity of hybrid core/shell fibers can be tuned by controlling the phase separation of POSS-MMA/PCL in electrospinning solutions and therefore the size of PCL-in-POSS-MMA emulsion droplets. Our results demonstrate the enhanced encapsulation capacity of POSS-MMA copolymers as shell materials. Taking advantage of the rapid advancement of POSS-based copolymer synthesis, this study can potentially be generalized to guide the fabrication of various other POSS-based core/shell nano-/microstructures by using single-nozzle electrospinning or coaxial electrospinning.
本文报道了使用基于多面体低聚倍半硅氧烷（POSS）的共聚物来稳定核/壳界面，以便于制备电纺核/壳纤维。对于聚[（甲基丙烯酸丙酯 - 七异丁基 - 多面体低聚倍半硅氧烷）- 共 - （甲基丙烯酸甲酯）]（POSS - MMA）/聚（ε - 己内酯）（PCL）体系，通过控制电纺溶液中POSS - MMA/PCL的相分离以及因此控制POSS - MMA中PCL乳液滴的大小，可以调节杂化核/壳纤维的双连续性。我们的结果表明POSS - MMA共聚物作为壳材料的包封能力增强。利用基于POSS的共聚物合成的快速进展，本研究有可能被推广，以指导通过单喷嘴电纺或同轴电纺制备各种其他基于POSS的核/壳纳米/微结构。
