A comparative study on the effects of ultrathin luminescent graphene oxide quantum dot (GOQD) and graphene oxide (GO) nanosheets on the interfacial interactions and mechanical properties of an epoxy composite

石墨烯 材料科学 复合材料 环氧树脂 氧化物 动态力学分析 氧化石墨 热重分析 X射线光电子能谱 傅里叶变换红外光谱 扫描电子显微镜 化学工程 纳米技术 聚合物 工程类 冶金
作者
Behzad Karimi,Bahram Ramezanzadeh
出处
期刊:Journal of Colloid and Interface Science [Elsevier BV]
卷期号:493: 62-76 被引量:83
标识
DOI:10.1016/j.jcis.2017.01.013
摘要

The reinforcement effect of graphene oxide nanosheets on the mechanical properties of an epoxy coating has been extensively studied. However, the effect of graphene oxide quantum dot (GOQD) as a new unique carbon based nanomaterial (with lateral dimension of 5–6 nm and thickness of one carbon atom) on the mechanical properties of epoxy coating has not been reported and compared with GO yet. So this study aims at fabrication of a high-performance polymer composite with unique mechanical properties using GOQD nanosheets. GO and GOQD were obtained through two different strategies of “top-down” synthesis from an expandable graphite by a modified Hummers' method and an easy “bottom-up” method by carbonizing citric acid, respectively. The morphology, size distribution, microstructure and chemistry of the GO and GOQD were compared by utilizing X-ray diffraction (XRD) analysis, atomic force microscopy (AFM), high resolution-transmission electron microscopy (HR-TEM), high resolution field-emission scanning electron microscopy (FE-SEM), thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS). Results obtained from these analyses confirmed successful synthesize of GOQD and GO nanosheets. The reinforcement effect of GO and GOQD nanosheets on the mechanical properties of the epoxy coating was studied by dynamic mechanical thermal analysis (DMTA) and tensile test. It was found that the GOQD could remarkably enhance the energy of break, Young's modulus, tensile stress and interfacial interactions compared to the neat epoxy and the one reinforced with GO nanosheets. GOQD improved the fracture toughness by factor of 175% and 700% compared to the GO/Epoxy and neat epoxy, respectively.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
善木兰发布了新的文献求助10
刚刚
1秒前
2秒前
5秒前
上好佳发布了新的文献求助10
5秒前
愉快西牛完成签到,获得积分10
5秒前
起风了完成签到,获得积分10
6秒前
xuzj应助qyn1234566采纳,获得10
7秒前
量子星尘发布了新的文献求助10
8秒前
han发布了新的文献求助10
8秒前
8秒前
8秒前
封闭货车发布了新的文献求助10
9秒前
10秒前
善木兰完成签到,获得积分10
10秒前
12秒前
roy完成签到,获得积分10
17秒前
adi发布了新的文献求助10
17秒前
17秒前
快乐的青柏完成签到,获得积分10
18秒前
hanye完成签到 ,获得积分10
18秒前
大胆的夏天完成签到,获得积分10
20秒前
影子完成签到 ,获得积分10
22秒前
wonhui完成签到,获得积分20
24秒前
哈哈哈完成签到,获得积分10
27秒前
Orange应助yar采纳,获得10
28秒前
m7m发布了新的文献求助30
29秒前
球球完成签到,获得积分10
30秒前
坦率白萱应助空禅yew采纳,获得10
30秒前
迷路宛筠完成签到 ,获得积分10
32秒前
Liu应助kk采纳,获得50
33秒前
小二郎应助樱桃窝窝头采纳,获得10
34秒前
坚定小熊猫完成签到,获得积分20
38秒前
39秒前
39秒前
43秒前
陶淘淘完成签到,获得积分10
44秒前
量子星尘发布了新的文献求助10
44秒前
李健的小迷弟应助yar采纳,获得10
44秒前
46秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988997
求助须知:如何正确求助?哪些是违规求助? 3531351
关于积分的说明 11253520
捐赠科研通 3269928
什么是DOI,文献DOI怎么找? 1804830
邀请新用户注册赠送积分活动 882063
科研通“疑难数据库(出版商)”最低求助积分说明 809068