Preparation of Melamine-formaldehyde Microspheres and Microcapsules Based on Poly(glutamic acid) by Template Method

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (10): 2447.

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Preparation of Melamine-formaldehyde Microspheres and Microcapsules Based on Poly(glutamic acid) by Template Method

ZHANG Ying¹, YAN Shi-Feng¹, RAO Shui-Qin¹, ZHENG Yan-Zhen¹, YIN Jing-Bo^1*, CHEN Xue-Si^2*

1. Department of Polymer Materials, Shanghai University, Shanghai 201800, China;
2. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Received:2010-10-13 Revised:2011-01-10 Online:2011-10-10 Published:2011-09-11
Contact: YIN Jing-Bo;CHEN Xue-Si E-mail:jbyin@shu.edu.cn;xschen@ciac.jl.cn
Supported by:
国家自然科学基金(批准号: 51003055, 50973060)、上海市教育委员会科研创新项目(批准号: 11YZ06)和上海市重点学科项目(批准号: s30107)资助.

Abstract

Abstract: Melamine-formaldehyde (MF) microspheres were prepared by dispersion polymerization. The influences of pH value and reaction time on partical size, surface potential and solubility of MF microspheres were studied. Using MF microspheres as templates, hollow PGA/CS microcapsules were fabricated by layer-by-layer technique. The templates and microcapsules were characterized by polarization microscope, nano-granularity and potential analyzer, IR and TEM. The results show that the partical size and surface potential of MF microspheres decrease with the reducing of pH and its solubility in hydrochloric acid becomes worse as the time grows. The main driving force is electrostatic force between PGA and CS, which is supported by alternating ζ-potentials. The hollow microcapsules with uniform size and good dispersity shows successful loading of model drug rhodamine, which is expected to find application in excellent carriers of water-soluble drugs.

Key words: Melamine-formaldehyde(MF), Poly(glutamic acid), Microcapsule, Assembly technique, ζ-potential

CLC Number:

O631

TrendMD:

ZHANG Ying, YAN Shi-Feng, RAO Shui-Qin, ZHENG Yan-Zhen, YIN Jing-Bo*, CHEN Xue-Si*. Preparation of Melamine-formaldehyde Microspheres and Microcapsules Based on Poly(glutamic acid) by Template Method[J]. Chem. J. Chinese Universities, 2011, 32(10): 2447.

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Preparation of Melamine-formaldehyde Microspheres and Microcapsules Based on Poly(glutamic acid) by Template Method

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