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One-step Fabrication of Multi-layered Porous Structure with Ordered/Disordered Asymmetry
- ACTA POLYMERICA SINICA Vol. 53, Issue 1, Pages: 37-45(2022)
- 作者机构：
1.宁波大学，材料科学与化学工程学院，宁波 315211
2.宁波大学，宁波特种高分子材料制备与应用技术重点实验室，宁波 315211
- 作者简介：
Wei Sun, E-mail: sunwei@nbu.edu.cn
- 基金信息：
DOI：10.11777/j.issn1000-3304.2021.21177
CLC：Published：20 January 2022，
Published Online：17 September 2021，
Received：30 June 2021，
Revised：09 August 2021，
- 稿件说明：
移动端阅览
崔鹏程,于涛,周楠等.有序/无序非对称型多层多孔结构的一步法制备研究[J].高分子学报,2022,53(01):37-45.
Cui Peng-cheng,Yu Tao,Zhou Nan,et al.One-step Fabrication of Multi-layered Porous Structure with Ordered/Disordered Asymmetry[J].ACTA POLYMERICA SINICA,2022,53(01):37-45.
崔鹏程,于涛,周楠等.有序/无序非对称型多层多孔结构的一步法制备研究[J].高分子学报,2022,53(01):37-45. DOI： 10.11777/j.issn1000-3304.2021.21177.
Cui Peng-cheng,Yu Tao,Zhou Nan,et al.One-step Fabrication of Multi-layered Porous Structure with Ordered/Disordered Asymmetry[J].ACTA POLYMERICA SINICA,2022,53(01):37-45. DOI： 10.11777/j.issn1000-3304.2021.21177.
摘要
反相乳液-水滴模板(Ie-BF)法被用以制备具有非对称多层多孔结构的聚合物薄膜. 具体来说，通过在高湿环境条件下浇筑以聚合物/三氯甲烷溶液为油相所制备的反相乳液，最终在所制备薄膜的表面层形成单层有序的蜂窝状BF多孔阵列结构，同时在本体层形成无序排布的多层多孔结构. 通过调节所浇筑乳液的组成以及Ie-BF法实施的条件，可以同时实现对表面层和本体层多孔结构(包括Ie-BF多孔结构的孔眼尺寸、尺寸分布、阵列有序度及多孔膜厚度)的有效调控. 通过在乳液水滴中加载异硫氰酸荧光素并对荧光素在Ie-BF薄膜分布进行跟踪表征，探究了乳液水滴的结构模板化作用和水溶性组分在Ie-BF薄膜内的组装行为.
Abstract
Polymeric films with three-dimensional porous structures have various advantageous properties
such as high specific surface area and ultra-lightweight. Reasonable structural design could be used to achieve the regulation and functionalization of complex porous structures. As the expectation for the diversified and advanced applications of porous polymers rises
making porous structure with complicated 3D pore morphologies has become new challenge for researchers in this area. Inverse emulsion-breath figure (Ie-BF) method is utilized to fabricate polymeric thin films with asymmetric multi-layered micro-porous structures. By casting inverse emulsions under humid environmental condition
ordered honeycomb-structured BF pore array is formed on the top surface
while disordered porous structure with differently featured pore sizes and pore arrangement can be flexibly formed in the bulk layer. Dynamic morphological manipulation on the fabrication of porous structures (including pore size & size distribution
array regularity and bulk layer pore morphologies) is facilely achieved by tuning the composition of the casting emulsion as well as the environmental conditions. By loading fluorescein isothiocyanate within the emulsion droplets and tracking the distribution of fluorescein isothiocyanate within the obtained Ie-BF film
the structure templating process of the emulsion droplets and the assembling behavior of the hydrophilic component in the Ie-BF film were studied. The confocal laser scanning microscope (CLSM) results confirm that the emulsion droplets were the main origin of pore-formation in the bulk layer. Hydrophilic components can be loaded by the reverse emulsion droplets and assembled onto the porous array of the Ie-BF structures by the one-step Ie-BF method. The Ie-BF technique provides a way of 3D pore-formation within the matrix of polymeric film. The highly dynamic control on the sublayer pore morphologies of the Ie-BF films
ranging from nano-pores to micro-porous foam-like structure
is a promising feature for constructing an efficient platform for different applications.
关键词
反相乳液水滴模板法三维多孔非对称结构
Keywords
Inverse emulsionBreath figure3D porous structureAsymmetric pore morphology
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