4.7 Article

Methylpiperidine-functionalized graphene oxide for efficient curing acceleration and gas barrier of polymer nanocomposites

期刊

APPLIED SURFACE SCIENCE
卷 464, 期 -, 页码 509-515

出版社

ELSEVIER
DOI: 10.1016/j.apsusc.2018.09.086

关键词

Polyimide; Functionalized graphene oxide; Low temperature imidization; Oxygen barrier; Thermal stability

资金

  1. Korea Institute of Science and Technology (KIST) Institutional Program & Open Research Program
  2. National Research Foundation (NRF) of Korea - Ministry of Science, ICT and Industrial Fundamental Technology Development Program by the Ministry of Trade, Industry and Energy (MOTIE) of Korea [10052838]
  3. Space Core Technology Development Program through the National Research Foundation of Korea - Ministry of Science, ICT and Future Planning [NRF-2017M1A3A3A02016310]

向作者/读者索取更多资源

We synthesized methylpiperidine-functionalized graphene oxide (MP-GO) by introducing 4-amino-1-methylpiperidine into reactive epoxy and/or carboxylic acid groups on pristine GO. Then, we applied the MP-GO as a curing catalyst for polyimide (PI) nanocomposites. The MP-GO was found to be an effective base-catalysts for the thermal conversion of polyamic acid (PAA) precursor to PI. Interestingly, when 3 wt% of MP-GO was added to the PI matrix, the complete imidization of nanocomposites was achieved at a temperature lower than 200 degrees C. In addition, the PI/MP-GO nanocomposite films exhibited reinforcement of the oxygen barrier properties which were even better than those of pristine PI, due to the excellent dispersion state of MP-GO and the favorable noncovalent interaction between MP-GO and the PI matrix. Comparison to pristine PI, the oxygen permeability of nanocomposite films that contained only 1 wt% of MP-GO loading was significantly decreased, by about 80%. Furthermore, all the PI/MP-GO nanocomposites exhibited high thermal stability.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据