文档介绍：聚合物功能化氧化石墨烯的合成与表征中文摘要

聚合物功能化氧化石墨烯的合成与表征
中文摘要
本论文以氧化石墨烯为基础,提出一种新的策略来制备聚合物功能化的氧化石墨
烯。就如何实现氧化石墨烯的功能化,功能化后的氧化石墨烯的潜在应用等方面进行
了详细的阐释,并重点围绕功能化的氧化石墨烯的便捷、高效制备及液晶功能化的氧
化石墨烯的制备两方面开展了详细研究。
本论文选用改进的 Hummers 方法制备氧化石墨烯,借助超声处理将其分散在水
中,得到稳定的氧化石墨烯水溶液。在此基础上,以制备得到的氧化石墨烯样品为原
料,利用氧化石墨烯表面上的羟基与铈盐构成的氧化还原体系引发乙烯类单体在氧化
石墨烯表面的接枝聚合,制备了乙烯类聚合物修饰的氧化石墨烯。红外光谱(FT-IR)、
X-射线衍射能谱(XRD) 和热失重(TGA) 等的测试结果表明成功制备了聚合物功能
化的氧化石墨烯,且可以通过控制铈盐的浓度或反应温度来控制接枝率,得到不同形
态的功能化的氧化石墨烯。
通过非共价键(π-π相互作用) 制备了末端含芘的侧链型液晶聚合物修饰的还原
氧化石墨烯,通过 FT-IR、XRD、TGA、原子力显微镜(AFM) 及溶解性测试等一系
列表征证明成功制备了聚合物修饰的还原氧化石墨烯。并研究了当液晶处在还原氧化
石墨烯二维受限空间内,其液晶相行为的变化。

关键词:氧化石墨烯;原子转移自由基聚合;表面修饰;表征

作者:马丽君
指导老师:屠迎锋(教授)
I
Abstract The synthesis and characterization of functionalized graphene oxide
Synthesis and Characterization of Polymer
Functionalized Graphene Oxide
Abstract
In this thesis, a new strategy was presented to prepare functionalized graphene oxide
sheets by chemical methods using graphene oxide as precursor. And two kinds of methods
were used in the functionalization of graphene oxide, the detailed types of the potential
application of functionalized graphene oxide. Especially, we studied the facile preparation
of the functionalized graphene oxide and the synthesis liquid crystal polymer
functionalized graphene oxide, below shows the details.
First improved Hummers method was chosen to prepare graphene oxide, then was
subjected to ultrasonic treatment in H2O to prepare graphene oxide aqueous solution. In
addition, we synthesized polymer grafted graphene oxide by using a redox system with
cerium (IV) ammonium nitrate/nitric acid and GO sheets′ hydroxyl groups as the redox
couple. And the new structure was proved to be got through the results of FT-IR, XRD and
TGA. We found that the vinyl polymers functionalized graphene oxide have different
structure with various temperature and redox initiator′s concentration .
We have essfully synthesized pyrene-terminated side-chain liquid crystal