In situ chemical reduction and functionalization of graphene oxide for electrically conductive phenol formaldehyde composites
In situ chemical reduction and functionalization of graphene oxide for electrically conductive phenol formaldehyde composites
复制标题
氧化石墨烯的原位化学还原和功能化用于导电酚醛复合材料
DOI：
10.1016/j.carbon.2013.11.046
复制
发表时间：
2014-03
期刊：
影响因子：
10.9
通讯作者：
Yu, Zhong-Zhen
中科院分区：
文献类型：
--
作者：
Yuan, Fang-Yuan;Zhang, Hao-Bin;Li, Xiaofeng;Ma, Hui-Ling;Li, Xiao-Zeng;Yu, Zhong-Zhen
我们报道了一种有效的一步法，在苯酚和甲醛的原位聚合过程中还原和功能化氧化石墨烯（GO）。用苯酚作为主要还原剂，将亲水性和电绝缘的GO转化为疏水性和导电的石墨烯。同时，GO的功能化是通过GO的环氧基团与苯酚的羟基在碱性条件下发生亲核取代反应来实现的。与绝缘GO和酚醛树脂（PF）组分不同，PF复合材料由于原位聚合过程中GO的偶然还原而具有导电性。PF复合材料的电导率为0.85体积%，GO的还原和功能化使PF复合材料具有较高的热稳定性和弯曲性能。在2.3vol. %时，分解温度显著提高的GO。PF复合材料的弯曲强度和模量与1.7体积%，GO分别增加了316.8%和56.7%。
We report an efficient one-step approach to reduce and functionalize graphene oxide (GO) during the in situ polymerization of phenol and formaldehyde. The hydrophilic and electrically insulating GO is converted to hydrophobic and electrically conductive graphene with phenol as the main reducing agent. Simultaneously, functionalization of GO is realized by the nucleophilic substitution reaction of the epoxide groups of GO with the hydroxyl groups of phenol in an alkali condition. Different from the insulating GO and phenol formaldehyde resin (PF) components, PF composites are electrically conductive due to the incidental reduction of GO during the in situ polymerization. The electrical conductivity of PF composite with 0.85 vol.% of GO is 0.20 S/m, nearly nine orders of magnitude higher than that of neat PF. Moreover, the efficient reduction and functionalization of GO endows the PF composites with high thermal stability and flexural properties. A striking increase in decomposition temperature is achieved with 2.3 vol.% of GO. The flexural strength and modulus of the PF composite with 1.7 vol.% GO are increased by 316.8% and 56.7%, respectively.
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影响因子：
3.4
作者：
S. Chatterjee;B. T. T. Chu-B.-T.-T.-Chu-2262873342
通讯作者：
S. Chatterjee;B. T. T. Chu-B.-T.-T.-Chu-2262873342
DOI：
10.5772/14665
发表时间：
2011-04
期刊：
--
影响因子：
--
作者：
H. Salavagione;Gerardo Martínez;Gary Ellis
通讯作者：
H. Salavagione;Gerardo Martínez;Gary Ellis
将聚酯接枝到石墨烯上用于导电和导热复合材料
影响因子：
5.5
作者：
Tang, Zhenghai;Kang, Hailan;Jia, Demin
通讯作者：
Jia, Demin
影响因子：
64.8
作者：
Stankovich, Sasha;Dikin, Dmitriy A.;Ruoff, Rodney S.
通讯作者：
Ruoff, Rodney S.
影响因子：
17.1
作者：
Yoonessi, Mitra;Gaier, James R.
通讯作者：
Gaier, James R.