溶剂交换法制备淀粉纳米颗粒及表征
发布时间：2018-11-23 09:34
【摘要】：采用沉淀技术以二甲基亚砜为溶剂,短链醇为不良溶剂利用溶剂交换法制备淀粉纳米颗粒。实验考察了不良溶剂种类,乙醇体积浓度和溶剂/不良溶剂体积比对颗粒尺寸的影响,并对获得的淀粉纳米颗粒结构与形态进行了红外光谱、扫描电镜以及X-射线衍射分析。结果表明:采用无水乙醇为不良溶剂,当溶剂与不良溶剂体积比1∶20情况下,制备的淀粉纳米颗粒尺寸(218.8±4.66)nm,粒子尺寸分布较均匀,化学结构未发生改变,晶体结构被破坏,衍射峰消失。
[Abstract]:Starch nanoparticles were prepared by solvent exchange method with dimethyl sulfoxide as solvent and short chain alcohol as bad solvent. The effects of the kinds of bad solvents, the volume concentration of ethanol and the volume ratio of solvent to bad solvent on the particle size were investigated. The structure and morphology of the obtained starch nanoparticles were analyzed by infrared spectroscopy, scanning electron microscope and X-ray diffraction. The results showed that the size distribution of starch nanoparticles (218.8 卤4.66) nm, particles was uniform and the chemical structure was not changed when the volume ratio of solvent to bad solvent was 1:20, the size distribution of starch nanoparticles was (218.8 卤4.66) nm,. The crystal structure was destroyed and the diffraction peak disappeared.
【作者单位】： 长春大学食品科学与工程学院;
【基金】：吉林省教育厅“十三五”科学技术研究项目(吉教科合字[2016]第301号) 长春大学国家级科研项目培育项目(2016JBC26L26)
【分类号】：TS236
本文编号：2351096
[Abstract]:Starch nanoparticles were prepared by solvent exchange method with dimethyl sulfoxide as solvent and short chain alcohol as bad solvent. The effects of the kinds of bad solvents, the volume concentration of ethanol and the volume ratio of solvent to bad solvent on the particle size were investigated. The structure and morphology of the obtained starch nanoparticles were analyzed by infrared spectroscopy, scanning electron microscope and X-ray diffraction. The results showed that the size distribution of starch nanoparticles (218.8 卤4.66) nm, particles was uniform and the chemical structure was not changed when the volume ratio of solvent to bad solvent was 1:20, the size distribution of starch nanoparticles was (218.8 卤4.66) nm,. The crystal structure was destroyed and the diffraction peak disappeared.
【作者单位】： 长春大学食品科学与工程学院;
【基金】：吉林省教育厅“十三五”科学技术研究项目(吉教科合字[2016]第301号) 长春大学国家级科研项目培育项目(2016JBC26L26)
【分类号】：TS236
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1 李晓静;形貌和粒径可控型淀粉纳米颗粒的制备及其对丹酚酸B控释特性的研究[D];青岛农业大学;2016年
2 邱超;纳米沉淀法制备淀粉纳米颗粒及其对活性成分装载特性的研究[D];青岛农业大学;2016年
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