Fabrication and characterisation of cellulose-based optical fibres

纤维素基光纤的制造和表征

基本信息

项目摘要

The numerous beneficial properties of the biopolymer cellulose promote its use in optoelectronic devices. The aim of the present project is the fabrication and characterization of cellulose-based biopolymer optical fibers for optical waveguiding. For this purpose, the influence of different solvents on the optical properties (transmission, absorption, refractive index profile) of the regenerated cellulose is investigated. For this purpose, different cellulose types are dissolved in the respective solvent systems, coagulated via diffusion processes to regenerated cellulose films and then optically characterized. In addition to pure cellulose, various cellulose derivatives are also examined optically. Based on the optical characteristics, core-cladding optical waveguide structures can be generated from the respective materials via a wet-spinning process. For this purpose, a wet-spinning device is being developed that produces fibers for optical waveguides from cellulose and cellulose derivatives that are as defect-free as possible. The optical properties of the cellulose are manipulated by chemical modifications in order to reduce the overtone oscillations caused by the hydroxyl groups and thus to be able to adjust the attenuation curve in a targeted manner. In addition to a single core-cladding structure, multi-core-cladding structures will also be produced from the developed fibers. The optical fibers are then tested for their resistance to radiation, temperature and moisture. In addition, the fibers are tested for their biodegradability using a respirometer. The characterization of the fabricated cellulose-based biopolymer optical fibers includes comprehensive analysis using scanning electron microscopy and light microscopy. Optical properties, such as light waveguidance, are determined via UV/VIS and NIR spectrometers. Crystallinities are determined by X-ray diffraction.
生物聚合物纤维素的众多有益特性促进了其在光电器件中的应用。本项目的目的是制造和表征用于光波导的纤维素基生物聚合物光纤。为此,研究了不同溶剂对再生纤维素的光学性质(透射、吸收、折射率分布)的影响。为此,将不同类型的纤维素溶解在各自的溶剂系统中,通过扩散过程凝结成再生纤维素膜,然后进行光学表征。除了纯纤维素外,还对各种纤维素衍生物进行光学检查。根据光学特性,可以通过湿纺工艺由相应的材料生成芯包层光波导结构。为此,正在开发一种湿纺装置,该装置可以用纤维素和纤维素衍生物生产尽可能无缺陷的光波导纤维。通过化学修饰来控制纤维素的光学特性,以减少由羟基引起的泛音振荡,从而能够有针对性地调整衰减曲线。除了单芯包层结构外,所开发的光纤还将生产多芯包层结构。然后测试光纤的耐辐射性、耐温性和耐湿性。此外,还使用呼吸计测试了纤维的生物降解性。所制造的纤维素基生物聚合物光纤的表征包括使用扫描电子显微镜和光学显微镜的综合分析。光学特性(例如光波导)是通过紫外/可见光和近红外光谱仪测定的。结晶度通过X射线衍射测定。

项目成果

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Professor Dr. Cordt Zollfrank其他文献

Professor Dr. Cordt Zollfrank的其他文献

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{{ truncateString('Professor Dr. Cordt Zollfrank', 18)}}的其他基金

Glucose-based block-co-oligomers with mixed alpha/beta configuration
具有混合 α/β 构型的葡萄糖嵌段共聚低聚物
  • 批准号:
    416720146
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Coordination Funds
协调基金
  • 批准号:
    390734333
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Holographic patterning of functional materials using phototactic microorganisms
利用趋光微生物对功能材料进行全息图案化
  • 批准号:
    235144145
  • 财政年份:
    2013
  • 资助金额:
    --
  • 项目类别:
    Reinhart Koselleck Projects
Innnovative functional coatings with transition metal oxides and their antimicrobial and catalytic properties
具有过渡金属氧化物的创新功能涂层及其抗菌和催化性能
  • 批准号:
    186187002
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Bioinspired design of functional optical structures
功能光学结构的仿生设计
  • 批准号:
    61683647
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Biotemplate-assisted manufacturing of silica nanowire assemblies
生物模板辅助制造二氧化硅纳米线组件
  • 批准号:
    5428875
  • 财政年份:
    2004
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes

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