功能性乙基纤维素复合微球的制备及性能
发布时间：2018-09-03 17:22
【摘要】：将聚N-异丙基丙烯酰胺、Fe_3O_4纳米颗粒和染料4-甲胺基-9-烯丙基-1,8-萘酰亚胺与乙基纤维素溶液共混,利用高压静电喷雾技术一步法制得兼具温敏性、磁性和荧光性的乙基纤维素复合微球。结果表明,制备的乙基纤维素复合微球平均粒径在亚微米级,Fe_3O_4纳米颗粒的添加提高了复合微球的骨架强度和改善了微球形貌。当温度超过聚N-异丙基丙烯酰胺的低临界溶解温度时,乙基纤维素复合微球的平均粒径减小,表现出温敏性;基于微球的温敏响应,乙基纤维素复合微球表现出与染料溶液相反的温致荧光增强性能。振动样品磁强计分析结果表明,乙基纤维素复合微球具有良好的超顺磁性。
[Abstract]:The poly (N-isopropylacrylamide) Fe3O4 nanoparticles and the dye 4-methylamino -9-allyl -1-aniline 8-naphthalimide were blended with ethyl cellulose solution, and the temperature sensitivity was obtained by a one-step high voltage electrostatic spray method. Magnetic and fluorescent ethylcellulose composite microspheres. The results showed that the average particle size of ethylcellulose composite microspheres was increased with the addition of Fe _ 3O _ 4 nanoparticles at sub-micron level, and the skeleton strength and morphology of the composite microspheres were improved. When the temperature exceeds the low critical solution temperature of poly (N-isopropylacrylamide), the average particle size of ethylcellulose composite microspheres decreases, showing temperature sensitivity. The ethylcellulose composite microspheres showed the opposite thermal fluorescence enhancement properties as compared with the dye solution. The analysis of vibrating sample magnetometer shows that the ethylcellulose composite microspheres have good superparamagnetism.
【作者单位】： 南京林业大学江苏省制浆造纸科学与技术重点实验室江苏省林业资源高效加工利用协同创新中心;
【基金】：国家自然科学基金(No.31200453,31200454,31470599)资助项目 江苏高校优势学科建设工程资助项目
【分类号】：O636.11;TB332
[Abstract]:The poly (N-isopropylacrylamide) Fe3O4 nanoparticles and the dye 4-methylamino -9-allyl -1-aniline 8-naphthalimide were blended with ethyl cellulose solution, and the temperature sensitivity was obtained by a one-step high voltage electrostatic spray method. Magnetic and fluorescent ethylcellulose composite microspheres. The results showed that the average particle size of ethylcellulose composite microspheres was increased with the addition of Fe _ 3O _ 4 nanoparticles at sub-micron level, and the skeleton strength and morphology of the composite microspheres were improved. When the temperature exceeds the low critical solution temperature of poly (N-isopropylacrylamide), the average particle size of ethylcellulose composite microspheres decreases, showing temperature sensitivity. The ethylcellulose composite microspheres showed the opposite thermal fluorescence enhancement properties as compared with the dye solution. The analysis of vibrating sample magnetometer shows that the ethylcellulose composite microspheres have good superparamagnetism.
【作者单位】： 南京林业大学江苏省制浆造纸科学与技术重点实验室江苏省林业资源高效加工利用协同创新中心;
【基金】：国家自然科学基金(No.31200453,31200454,31470599)资助项目 江苏高校优势学科建设工程资助项目
【分类号】：O636.11;TB332
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