纳米纤维素手性荧光复合薄膜的制备
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摘要
纳米纤维素以其高强度,强亲水性,可生物降解性,光学性质显著等特点使其在功能复合材料受到广泛关注。本文通过硫酸水解法制备纳米纤维素,通过掺杂荧光染料罗丹明B对其进行改性,在自然干燥的条件下制备纳米纤维素手性荧光复合薄膜。通过扫描电子显微镜(SEM)、透射电子显微镜(TEM)、荧光光谱仪、X射线衍射光谱仪(XRD)和偏光显微镜(POM)等对其进行表征,研究了纤维素纳米晶体薄膜的微观结构以及光学性质。结果表明:加入质量分数0.05%的罗丹明B后的复合薄膜具有明显的虹彩色泽,复合薄膜保留了手性向列结构,且具有显著的橘红色荧光发射性能。
Due to the advantages of high strength, strong hydrophilicity, biodegradability, remarkable optical properties, nanocrystalline cellulosefunctional composites have attracted wide attention. In this paper, nanocrystalline cellulose was prepared by sulfuric acid hydrolysis method. NCC fluorescent composite film was prepared bydoped fluorescent dye Rhodamine B under natural dry conditions. Then, the film was characterized byscanning electron microscopy(SEM),transmission electron microscopy(TEM), fluorescence spectrometer, X-ray diffraction(XRD), Polarizing microscope(POM) respectively. The microstructure and optical properties of the film was analyzed. The characterization results showed thatthe composite film after adding 0.05 wt% rhodamine B has obvious iridescent effect,, preserved chiral nematic crystal structure with significant jacinth fluorescence emission properties.
Due to the advantages of high strength, strong hydrophilicity, biodegradability, remarkable optical properties, nanocrystalline cellulosefunctional composites have attracted wide attention. In this paper, nanocrystalline cellulose was prepared by sulfuric acid hydrolysis method. NCC fluorescent composite film was prepared bydoped fluorescent dye Rhodamine B under natural dry conditions. Then, the film was characterized byscanning electron microscopy(SEM),transmission electron microscopy(TEM), fluorescence spectrometer, X-ray diffraction(XRD), Polarizing microscope(POM) respectively. The microstructure and optical properties of the film was analyzed. The characterization results showed thatthe composite film after adding 0.05 wt% rhodamine B has obvious iridescent effect,, preserved chiral nematic crystal structure with significant jacinth fluorescence emission properties.
引文
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[2]李伟,王锐,刘守新.纳米纤维素的制备[J].化学进展,2010,22(10):2060-2070.
[3]林涛,段敏,殷学风,等.纤维素及其衍生物的液晶态及应用[J].中国造纸,2018,37(06):60-67.
[4]代林林.硫酸水解法纳米纤维素的自组装行为及其应用研究[D].东北林业大学,2016.
[5]Vlad-Cristea M S,Landry V,Blanchet P,et al.Nanocrystalline cellulose as effect pigment in clear coatings for wood[J].ISRN nanomaterials,2013.
[6]赵国敏,潘明珠.CNC基手性向列液晶衍生材料制备及应用研究进展[J].高分子通报,2018(02):31-37.
[7]吴伟兵,庄志良,景宜,等.纤维素自组装纳米粒子的研究进展[J].林产化学与工业,2014,34(02):126-133.
[8]程淇俊.可调色荧光防伪功能复合材料的制备及性能研究[D].西南科技大学,2015.
[9]刘平.流动场下纤维素纳米晶自组装机制研究及其功能复合材料的构筑[D].青岛科技大学,2017.
[10]Revol J F,Bradford H,Giasson J,et al.Helicoidal self-ordering of cellulose microfibrils in aqueous suspension[J]. International Journal of Biological Macromolecules,1992,14(3):170-172.
[11]蔡建华.功能化荧光复合材料的制备及其分析应用[D].福州大学,2016.
[12]代林林,李伟,曹军,等.纳米晶纤维素手性向列型液晶相结构的形成、调控及应用[J].化学进展,2015,27(07):861-869.
[13]赵经鹏.纤维素基荧光纳米复合材料制备及性能研究[D].上海大学,2015.
[14]褚光.基于纤维素纳米晶手性液晶材料的光学性质研究[D].吉林大学,2016.
[15]Nielsen L J,Eyley S,Thielemans W,et al.Dual fluorescent labelling of cellulose nanocrystals for pH sensing[J].Chemical Communications,2010,46(47):8929-8931.