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
自信鑫鹏完成签到,获得积分10
刚刚
skj你考六级完成签到,获得积分10
1秒前
614521发布了新的文献求助10
1秒前
慈祥的二爷完成签到,获得积分10
1秒前
1秒前
所所应助xiaoguan采纳,获得10
2秒前
有人喜欢蓝完成签到 ,获得积分10
2秒前
杨佳于完成签到,获得积分20
2秒前
王小西发布了新的文献求助10
3秒前
瓜兵是官爷完成签到,获得积分10
3秒前
何静涛完成签到,获得积分10
4秒前
黄文斌完成签到,获得积分10
4秒前
冯宇完成签到,获得积分10
5秒前
luwenxuan发布了新的文献求助10
6秒前
小琪猪完成签到,获得积分10
6秒前
basepair完成签到,获得积分10
6秒前
啦哈啦哈啦完成签到,获得积分10
7秒前
活力毛豆完成签到 ,获得积分10
7秒前
x_x完成签到,获得积分10
7秒前
李雪松完成签到 ,获得积分10
7秒前
柚子完成签到,获得积分10
8秒前
sunflowers完成签到 ,获得积分10
8秒前
8秒前
steven完成签到,获得积分10
8秒前
8秒前
todo完成签到,获得积分10
8秒前
YifanWang应助xiaoguan采纳,获得20
9秒前
10秒前
皑似山上雪完成签到,获得积分10
10秒前
知了完成签到,获得积分10
10秒前
WHT完成签到,获得积分10
10秒前
红豆小猫应助614521采纳,获得10
11秒前
11秒前
卡布达完成签到,获得积分10
11秒前
lele发布了新的文献求助10
12秒前
cesar完成签到,获得积分10
12秒前
枕星完成签到,获得积分10
13秒前
文静的白羊完成签到,获得积分10
13秒前
0713完成签到,获得积分10
13秒前
紧张的刺猬完成签到,获得积分10
13秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
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 4038303
求助须知:如何正确求助?哪些是违规求助? 3576013
关于积分的说明 11374210
捐赠科研通 3305780
什么是DOI,文献DOI怎么找? 1819322
邀请新用户注册赠送积分活动 892672
科研通“疑难数据库(出版商)”最低求助积分说明 815029