化工进展 ›› 2020, Vol. 39 ›› Issue (10): 4127-4133.DOI: 10.16085/j.issn.1000-6613.2020-0069

• 材料科学与技术 • 上一篇    下一篇

微波合成含氮掺杂碳量子点改性水性聚氨酯的制备与性能

田振(), 许戈文(), 黄毅萍, 鲍俊杰, 熊潜生, 孙文, 兰芬芬, 姚周   

  1. 安徽大学化学化工学院,安徽省绿色高分子材料重点实验室,水基高分子材料安徽省工程 技术研究中心,安徽 合肥 230000
  • 出版日期:2020-10-05 发布日期:2020-10-09
  • 通讯作者: 许戈文
  • 作者简介:田振(1996—),男,硕士研究生,研究方向水性聚氨酯、绿色高分子材料。E-mail:1421658366@qq.com
  • 基金资助:
    安徽省自然科学基金(1808085QE173);安徽省高校科学研究项目(KJ2017A031)

Preparation and properties of microwave-synthesized nitrogen-doped carbon quantum dots modified waterborne polyurethane

Zhen TIAN(), Gewen XU(), Yiping HUANG, Junjie BAO, Qiansheng XIONG, Wen SUN, Fenfen LAN, Zhou YAO   

  1. College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Environment-friendly Polymer Materials of Anhui Province, Anhui Province Engineering Technology Research Center of Water-Borne Polymer Materials, Hefei 230000, Anhui, China
  • Online:2020-10-05 Published:2020-10-09
  • Contact: Gewen XU

摘要:

以柠檬酸和尿素分别为碳源和氮源,微波法合成含氮掺杂碳点N-CDs。以异氟尔酮二异氰酸酯(IPDI)、聚氧化丙烯(PPG-2000)为主要原料,加入不同量的N-CDs制备一系列碳点水性聚氨酯复合材料 (N-CDs/WPU)。通过FTIR、TEM、XPS、UV-vis、荧光光谱和力学性能测试等对复合材料结构和性能进行表征。测试结果表明N-CDs主要由碳氮氧元素组成,表面具有胺基、羟基等活性基团,N-CDs的加入,提高了复合胶膜的力学性能,赋予了胶膜荧光性能。当N-CDs质量分数为0.6%时胶膜拉伸强度达到最大35.00MPa,加入量质量分数为0.8%时荧光强度最佳。

关键词: 碳点, 水性聚氨酯, 复合材料, 荧光性能, 拉伸强度

Abstract:

Using citric acid and urea as the carbon source and nitrogen source, the N-CDs containing nitrogen-doped carbon dots were synthesized by microwave method. A series of carbon-dot waterborne polyurethane composites (N-CDs/WPU) were prepared by using isoflurone diisocyanate (IPDI) and polyoxypropylene (PPG-2000) as main raw materials and adding different amounts of N-CDs. The structures and properties of composites were characterized by FTIR, TEM, XPS, UV-vis, fluorescence spectroscopy and mechanical property testing. The results showed that N-CD was mainly composed of carbonitride and oxygen, and the surface had active groups such as amine groups and hydroxyl groups. The addition of N-CDs improved the mechanical properties of the composite film, gave the film fluorescence properties. When the amount of N-CDs added was 0.6%, the tensile strength of the film reached a maximum of 35.00 MPa. when the addition amount was 0.8%, the fluorescence intensity was the best.

Key words: carbon point, water-based polyurethane, composite material, fluorescent property, tensile strength

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