AN EFFECTIVE WAY TO PREPARE POLYETHYLENE GLYCOL-MODIFIED GRAPHENE OXIDE

Cui-ping Yu; Heng-chong Shi; De-an Shi; Jing-hua Yin

doi:10.3724/SP.J.1105.2012.11335

您当前的位置：

首页 >

文章列表页 >

AN EFFECTIVE WAY TO PREPARE POLYETHYLENE GLYCOL-MODIFIED GRAPHENE OXIDE

Research Article | 更新时间：2021-03-19

- AN EFFECTIVE WAY TO PREPARE POLYETHYLENE GLYCOL-MODIFIED GRAPHENE OXIDE
- Acta Polymerica Sinica Issue 6, Pages: 653-659(2012)
- 作者机构：
  
  1. 湖北大学材料科学与工程学院功能材料绿色制备与应用省部共建教育部重点实验室,武汉,430062
  2. 中国科学院长春应用化学研究所高分子化学与物理国家重点实验室长春 130022>
- 作者简介：
- 基金信息：
- DOI：10.3724/SP.J.1105.2012.11335
  CLC：
- Published：20 June 2012，
扫描看全文
Cui-ping Yu, Heng-chong Shi, De-an Shi, Jing-hua Yin. AN EFFECTIVE WAY TO PREPARE POLYETHYLENE GLYCOL-MODIFIED GRAPHENE OXIDE. [J]. Acta Polymerica Sinica (6):653-659(2012)
DOI：

Cui-ping Yu, Heng-chong Shi, De-an Shi, Jing-hua Yin. AN EFFECTIVE WAY TO PREPARE POLYETHYLENE GLYCOL-MODIFIED GRAPHENE OXIDE. [J]. Acta Polymerica Sinica (6):653-659(2012) DOI： 10.3724/SP.J.1105.2012.11335.

摘要

为提高氧化石墨烯(GO)的生物相容性从而扩展其在高性能生物材料制备中的应用

采用甲苯-2

4-二异氰酸酯作为桥联剂

制备了四臂星型聚乙二醇修饰氧化石墨烯 (GO-TDI-sPEG)

该产物在水中仍然可以稳定分散.采用傅里叶红外光谱(FTIR)、拉曼光谱(Raman)、X-射线衍射 (XRD)、原子力显微镜 (AFM)、透射电子显微镜 (TEM)和热重分析(TGA)对接枝产物进行表征.产物在2861 cm-1和1093 cm-1处出现的特征红外吸收表明sPEG已接枝到GO上.产物的Raman光谱中D模与G模信号变弱

且 ID/I G值变化不大

说明sPEG改性后的氧化石墨物理结构没有发生变化.XRD曲线上产物衍射峰消失

表明经聚合物修饰后氧化石墨被完全剥离.TGA数据表明原始GO在约160℃开始发生热失重

经修饰后

大约在260℃开始热失重

热稳定性增加了约100℃.由TEM图片可以观察到GO及改性石墨烯产物剥离程度较高

且片上分布有较多聚合物点.且AFM图片显示GO的平均厚度大约为0.85 nm

接上聚合物后部分厚度增加到约1.2 nm.

Abstract

In order to improve the biocompatibility of graphene oxide (GO) and enhance its application in preparing biomaterials

four-arm star polyethylene glycol (sPEG) was used to modify GO under the assistance of toluene-2

4-diisocyanate (TDI).Polyethylene glycol-modified graphene oxide (GO-TDI-sPEG) obtained by this facile method possesses high sPEG grafting density

which could be stably suspended in aqueous solutions.Fourier transform infrared spectroscopy (FTIR)

Raman spectroscopy (Raman)

X-ray diffraction (XRD)

atomic force microscopy (AFM)

transmission electron microscopy (TEM) and thermogravimetric analysis (TGA) were used to characterize the resultant material.The appearance of the characteristic absorptions at 2861 and 1093 cm-1 in FTIR spectrum

as well as the AFM and TEM micrographs indicated that sPEG was successfully grafted onto GO.No diffraction peak could be found in XRD figure of GO-TDI-sPEG

which indicated that the layers of GO-TDI-sPEG were fully exfoliated after modification.The TGA test results showed that the thermal stability of the modified GO had been greatly increased and the grafting degree of sPEG in GO-TDI-sPEG was about 12.1 wt%.

关键词

氧化石墨烯四臂星型聚乙二醇甲苯-24-二异氰酸酯共价功能化

Keywords

Graphene oxideFour-arm star polyethylene glycolToluene-24-diisocyanateCovalent functionalization

references

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Preparation of GO/PMMA Nanocomposites with Significantly Increased Properties through Metal Ion Coordination

Preparation of Crosslinked Polystyrene Nanoparticles/Reduced Graphene Oxide Hybrids Using Electrostatic Self-assembly and Their Application in SBR

Preparation of Sulfonated Poly(ether ether ketone)/Graphene Oxide Blend Membranes and Their Application in Vanadium Redox Flow Battery

Synergetic Flame Retardant Effect of Graphene Oxide and Si-P Oligomer in Epoxy

Preparation and Applications of Graphene/Polymer Composite Thin Films

Related Author

No data

Related Institution

Key Laboratory of Advanced Materials, Department of Chemical Engineering, Tsinghua University

College of Material Science and Engineering, South China University of Technology

School of Materials Science and Engineering, Tianjin Polytechnic University

Stae Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University

Institute of Chemistry, Chinese Academy of Sciences

Postal code：100190
Tel：010-62588927 Email：gfzxb@iccas.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备05002797号-8 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰