DataVXACS Applied Polymer MaterialsPaper
journal article·2020-02-14

Porosity-Tunable Structures with “Fossilized” Bubbles

Lin Wang, Miao Wang, Guangchao Wan, Xing Guo, Xinwen Xie, Wei Liu, Yunmao Zhang, Jing Fan, Xu Hou, Zi Chen

ACS Applied Polymer Materials· Volume 2· Issue 2
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Source abstract

Abstract

Porous structures have garnered increasing attention in recent research on lightweight, multifunctional materials that enable a wide range of applications including separation, adsorption, sensing, pervaporation, and reactions. Here we report a versatile method for creating noninterconnected, porous structures with tunable pore size distributions by "fossilizing" bubbles in the curing matrix. The bubbles are generated from a pressure-driven flow of air/vapor through a template with micrometer-scaled channels. Tunable fabrication of porous materials with adjustable pore size and pore distribution can be achieved by controlling the pressure difference and the templates' design. To quantitatively guide the synthesis of the porous structures, we develop a theoretical model to predict the pore size, which agrees with experiments. Moreover, by maneuvering the pore size distributions of this structure on demand, we demonstrate its feasibility as a differential thermal insulator that can be utilized in various fields such as microfluidic chips and microreactors. Overall, this facile method provides a strategy for fabricating lightweight porous structures that have broad applications in microfluidics, thermal insulation, separation science, and tissue engineering.
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Research context

Biomaterials

OpenAlex topics: Pickering emulsions and particle stabilization · Innovative Microfluidic and Catalytic Techniques Innovation · Surface Modification and Superhydrophobicity

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, College of Physical Science and Technology, Xiamen University, Xiamen, Fujian 361005, China

National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China

Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, United States

College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China

Department of Mechanical Engineering, City College of City University of New York, New York, New York 10031, United States

State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, Fujian 361005, China

Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen, Fujian 361005, China

Funding

Eidgen?ssische Technische Hochschule Z?rich · State Administration of Foreign Experts Affairs · Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Fujian Province · National Natural Science Foundation of China · Fujian Provincial Development and Reform Commission · Thayer School of Engineering at Dartmouth

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