Understanding the effects of carboxylated groups of functionalized graphene oxide on the curing behavior and intermolecular interactions of benzoxazine nanocomposites

RSC Advances ◽  
2016 ◽  
Vol 6 (37) ◽  
pp. 31484-31496 ◽  
Author(s):  
Qingyu Xu ◽  
Ming Zeng ◽  
Zijian Feng ◽  
Die Yin ◽  
Yiwan Huang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Intermolecular Interactions ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Curing Behavior ◽  
Intercalative Polymerization

Novel benzoxazine (BOZ)/carboxylated graphene oxide (GO-COOH) composites were prepared via in situ intercalative polymerization.

In situ preparation of functionalized graphene oxide/epoxy nanocomposites with effective reinforcements

2011 ◽  
Vol 21 (35) ◽  
pp. 13290 ◽  
Author(s):  
Chenlu Bao ◽  
Yuqiang Guo ◽  
Lei Song ◽  
Yongchun Kan ◽  
Xiaodong Qian ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Functionalized Graphene ◽  
Epoxy Nanocomposites ◽  
Functionalized Graphene Oxide ◽  
In Situ Preparation

In situ remediation of mercury-contaminated soil using thiol-functionalized graphene oxide/Fe-Mn composite

2019 ◽  
Vol 373 ◽  
pp. 783-790 ◽  
Author(s):  
Yao Huang ◽  
Mengxia Wang ◽  
Zhanjun Li ◽  
Yanyan Gong ◽  
Eddy Y. Zeng
Keyword(s):  
Graphene Oxide ◽  
Contaminated Soil ◽  
Functionalized Graphene ◽  
In Situ Remediation ◽  
Functionalized Graphene Oxide

In situ nano-silicate functionalized graphene oxide composites to improve MB removal

2017 ◽  
Vol 81 ◽  
pp. 87-94 ◽  
Author(s):  
Pei Chen ◽  
Zhan-fang Cao ◽  
Xin Wen ◽  
Jing Wang ◽  
Fan Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Oxide Composites

Selective removal of anionic dyes using poly(N,N-dimethyl amino ethylmethacrylate) functionalized graphene oxide

RSC Advances ◽  
2016 ◽  
Vol 6 (71) ◽  
pp. 67242-67251 ◽  
Author(s):  
Chengpeng Li ◽  
Haijin Zhu ◽  
Xiaodong She ◽  
Tao Wang ◽  
Fenghua She ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Selective Removal ◽  
Functionalized Graphene ◽  
Anionic Dyes ◽  
Functionalized Graphene Oxide

An in situ polymerization strategy was used to functionalize graphene oxide (GO) with poly(N,N-dimethyl amino ethylmethacrylate) (PDMAEMA) for the selective removal of anionic dyes.

Effect of Amine Molecular Chain Length on the Mechanical and Thermal Properties of Functionalized Graphene Oxide/Polyurea Nanocomposites

2021 ◽  
Vol 13 (2) ◽  
pp. 199-208
Author(s):  
Qiang Zhao ◽  
Si Ouyang ◽  
Gang Chen ◽  
Yiqing Deng ◽  
Mengxiao Chen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Photoelectron Spectroscopy ◽  
Chemical Conversion ◽  
Mechanical And Thermal Properties ◽  
Functionalized Graphene ◽  
Scanning Calorimetry ◽  
Functionalized Graphene Oxide ◽  
New Approach ◽  
Chain Lengths

To improve the overall performance of polyurea, linear diamines with three different chain lengths (1,2-ethylenediamine (EDA) and amino-terminated polyoxypropylenes D230 and D2000) were reacted with graphene oxide (GO) by reaction of amines with carboxyl groups, and three different amino-functionalized graphene oxide (AGO) nanosheets (EDA-GO, D230-GO and D2000-GO) were prepared. Subsequently, an AGO flake was bonded to a polyurea (PUA) substrate by an in situ chemical process. Analytical tests, including X-ray photoelectron spectroscopy (XPS), showed that diamines were attached to the GO flake. The reinforcement properties of the nanocomposites were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and tensile testing. AGO nanosheets, especially EDA-GO, result in a certain degree of enhancement in the thermal and mechanical properties of nanocomposites formed with polyurea. The TGA and DSC results indicated that the T5% and Tg of the nanocomposites at low AGO loading were increased compared with those of pure polyurea. Meanwhile, the elongation at break of the nanocomposite film with 0.1 wt% EDA-GO loading was 240% higher than that of pure polyurea, and tensile strength was increased by 80% over that of pure polyurea. We provide a new approach to the chemical conversion of GO/PUA nanocomposites by preparing AGO and complexing it with polyurea.

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