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

被引：16

作者：

Jin, Jeong-Un ^{[1
,2
]}

Lee, Dong-Hoon ^{[2
]}

Nam, Ki-Ho ^{[1
]}

Yu, Jaesang ^{[1
]}

Kim, Young-Kwan ^{[1
]}

Goh, Munju ^{[1
]}

Kim, Seo Gyun ^{[3
]}

Lee, Heon Sang ^{[3
]}

Ku, Bon-Cheol ^{[1
]}

You, Nam-Ho ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Inst Adv Composites Mat, Carbon Composite Mat Res Ctr, Chudong Ro 92, Wanju Gun 565905, Jeollabuk Do, South Korea

[2] Uiduk Univ, Dept Semicond Energy Engn, Gyeonju Si 780713, Gyengsangbuk Do, South Korea

[3] Dong A Univ, Dept Chem Engn, Nakdong Daero 550, Busan 604714, South Korea

来源：

APPLIED SURFACE SCIENCE | 2019年 / 464卷

基金：

新加坡国家研究基金会;

关键词：

Polyimide; Functionalized graphene oxide; Low temperature imidization; Oxygen barrier; Thermal stability; POLYIMIDE NANOCOMPOSITES; MECHANICAL-PROPERTIES; IMIDIZATION; EPOXY;

D O I：

10.1016/j.apsusc.2018.09.086

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：509 / 515

页数：7

共 39 条

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