材料科学
纳米技术
石墨烯
聚合物
多孔性
氧化物
制作
碳纳米管
退火(玻璃)
碳纤维
聚苯乙烯
化学工程
复合数
复合材料
病理
工程类
冶金
替代医学
医学
作者
James Nicolas Pagaduan,Sadaki Samitsu,Jordan Varma,Todd Emrick,Reika Katsumata
出处
期刊:ACS applied polymer materials
[American Chemical Society]
日期:2022-04-12
卷期号:4 (6): 4329-4338
被引量:9
标识
DOI:10.1021/acsapm.2c00283
摘要
Porous materials continue to establish critically important roles in applications extending from greenhouse gas capture to thermal superinsulation. Their effective structural control by an array of templating and template-free approaches imparts remarkable properties that are unattainable in the bulk. However, current preparative techniques frequently employ multiple, intricate steps that preclude scalability. Thus, there remains a need to reconcile this trade-off between structural control and procedural simplicity. Herein, a “freeze-burn” process is introduced as a rapid, robust strategy to fabricate porous carbon networks using polymer-templated rapid thermal annealing. Reduced graphene oxide is selected as the model material, templated by a polystyrene/poly(vinyl methyl ether) blend, to generate macropores on the size of phase separation, with the aim of understanding the impact of polymer mobility on templated morphologies. Without changing the template composition or processing conditions, we demonstrate applicability of freeze-burn to other carbon materials, such as graphene oxide, carbon black, carbon nanopowder, and multiwalled carbon nanotubes. This sequential templating and template degradation can be completed in one step in less than 10 min, making freeze-burn an energy- and time-efficient procedure. This work will serve as a powerful platform for the rapid templating of hard materials and will inspire simple, scalable approaches for creating porous structures.
科研通智能强力驱动
Strongly Powered by AbleSci AI