Preparation and Gas Separation Properties of Carbon/Carbon Nanotubes Hybrid Membranes Derived from PMDA-ODA Polyimide
Source abstract
Abstract
针对现有气体分离炭膜存在的渗透速率低等问题, 提出并设计在PMDA-ODA型聚酰亚胺前驱体中掺杂碳纳米管, 经高温热解后制备炭/碳纳米管杂化膜. 分别采用透射电镜(TEM)、X射线衍射分析(XRD)和气体渗透实验对炭/碳纳米管杂化膜的微观结构和分离性能进行表征. 实验结果表明, 在PMDA-ODA型聚酰亚胺前驱体中掺杂碳纳米管后, 碳纳米管与炭基体之间形成明显的“界面间隙”, 打破了原有炭膜中由乱层炭构成的无序微孔结构, 重新构建了杂化炭膜的孔隙结构. 与纯炭膜相比, 杂化炭膜的气体渗透速率大幅增加, 其中O 2 的渗透速率增大接近4倍(达到1576 Barrer), 而O 2 /N 2 的分离选择性仅降低17%.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Membrane Separation and Gas Transport · Graphene research and applications · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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