Hou Aiqin, Zhang Chunxiang, Wang Yuyan
National Engineering Research Center for Dyeing and Finishing of Textiles, Donghua University, 2999 North Renmin Road, Shanghai 201620, PR China.
National Engineering Research Center for Dyeing and Finishing of Textiles, Donghua University, 2999 North Renmin Road, Shanghai 201620, PR China.
Carbohydr Polym. 2012 Jan 4;87(1):284-288. doi: 10.1016/j.carbpol.2011.07.055. Epub 2011 Aug 3.
Azobenzene Schiff base possesses excellent photochromic or thermochromic properties based on intermolecular proton transfer or cis-trans isomerization. The azobenzene Schiff base containing two reactive groups, N, N-bis{p-[(2'-sulphatoethyl)sulphonyl phenylazo] salicylidene}-1,2-ethylenediamine (BSPEA), was applied to modify cellulose materials. The functional cellulose fabrics containing azobenzene Schiff base groups were prepared. The chemical and morphological structures of functional cellulose fabrics were characterized by element analysis, FT-IR spectrum, and scanning electron microscopy (SEM). The UV-protection properties of the fabrics were investigated by the ultraviolet transmittance spectra and ultraviolet protection factor (UPF). The results show that the functional cellulose fabrics had excellent UV-protection properties with higher UPF value (UPF value reached 31.7) and lower ultraviolet transmittance (less than 5%). The modified cellulose fabrics had not significant influence on the physical properties. The functional cellulose fabrics based on reactive azobenzene Schiff base would have potential application in textile and functional materials.
偶氮苯席夫碱基于分子间质子转移或顺反异构化具有优异的光致变色或热致变色性能。含有两个反应性基团的偶氮苯席夫碱，即N，N-双{p-[(2'-硫酸乙酯基)磺酰基苯偶氮]水杨醛}-1,2-乙二胺（BSPEA），被应用于改性纤维素材料。制备了含有偶氮苯席夫碱基团 的功能性纤维素织物。通过元素分析、傅里叶变换红外光谱（FT-IR）和扫描电子显微镜（SEM）对功能性纤维素织物的化学和形态结构进行了表征。通过紫外透过光谱和紫外线防护系数（UPF）研究了织物的紫外线防护性能。结果表明，功能性纤维素织物具有优异的紫外线防护性能，具有较高的UPF值（UPF值达到31.7）和较低的紫外线透过率（小于5%）。改性纤维素织物对物理性能没有显著影响。基于反应性偶氮苯席夫碱的功能性纤维素织物在纺织品和功能材料方面具有潜在的应用价值。
