Preparation of magnetic poly lactic acid microcapsules entrapped by Fe3O4 nanoparticles

doi:10.3969/j.issn.1000-2006.2015.04.017

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2015, Vol. 39 ›› Issue (04): 101-104.doi: 10.3969/j.issn.1000-2006.2015.04.017

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Preparation of magnetic poly lactic acid microcapsules entrapped by Fe₃O₄ nanoparticles

XU Peng¹, CHEN Yixi¹, TANG Jin’gen², CAO Xiaoyong³, ZHANG Rui^1*

1. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China;
2. College of Forestry, Nanjing Forestry University, Nanjing 210037, China;
3. Nanjing Institute of Product Quality Inspection, Nanjing 210028, China

Online:2015-07-31 Published:2015-07-31

Abstract

Abstract: The biodegradable magnetic poly lactic acid(PLA)microcapsules with Fe₃O₄ nanoparticles in the wall were designed and prepared based on the combination of ultrasonic emulsification technique and double emulsion-solvent evaporation method. Fe₃O₄ nanoparticles were prepared by coprecipitation method, and coated with undecylenic acid and oleic acid to improve its stability in dichloromethane. The structure and morphology of the magnetic PLA microcapsules were analyzed by scanning electron microcopy(SEM)and transmission electron microscopy(TEM). Moreover, the thermal properties of the magnetic PLA microcapsules were measured by thermogravimetric analysis(TGA). As demonstrated by experimental results, the diameter of the uniform magnetic microcapsules was about 1 μm, and the magnetic PLA microcapsules could be easily separated from aqueous solution by an external magnetic field.

CLC Number:

TQ450.4⁺2

XU Peng, CHEN Yixi, TANG Jin’gen, CAO Xiaoyong, ZHANG Rui. Preparation of magnetic poly lactic acid microcapsules entrapped by Fe₃O₄ nanoparticles[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2015, 39(04): 101-104.

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Preparation of magnetic poly lactic acid microcapsules entrapped by Fe₃O₄ nanoparticles

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