Preparation of Polymeric Nanoparticles and Observa tion on the Structure of Novel Nanosized Physical Hydrogels by AFM and SEM Methods

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (6): 984.

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Preparation of Polymeric Nanoparticles and Observa tion on the Structure of Novel Nanosized Physical Hydrogels by AFM and SEM Methods

ZHAO Yi-Qiang¹, MING Wei-Hua¹, HU Jian-Hua¹, FU Shou-Kuan¹, LI Min-Qian², CHEN Sheng-Fu², XIONG Qi-Hua²

1. Department of Macromolecular Science, the Laboratory of Molecular Engineering of Polymer, Fudan University, Shanghai, 200433;
2. Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai, 201800

Received:1999-03-08 Online:1999-06-24 Published:1999-06-24

Abstract

Abstract: A series of novel nano-sized physical hydrogels based on the hydrophobic polymeric nanoparticles have been prepared via a modified microemu lsion polymerization, which may contain as much as above 90% water with nanosized particle diameter of about 20nm. The specific structures of the prepared hydrogels were observed successfully by A tomicForce Microscope (AFM) and Scanning Electron Microscope (SEM). The micrograph s showed that the polymeric nanoparticles and their aggregated clusters were connected to form the networks of hydrogels, in which water including free water and bound water were embedded. The formation mechanism of the hydrogel has also been discussed in th is paper. Keywords　N anoparticle, Physical hydrogel.

Key words: Nanoparticle, Physical hydrogel, Atomic Force Microscope, Scanning Electron Microscope

CLC Number:

O631

TrendMD:

ZHAO Yi-Qiang, MING Wei-Hua, HU Jian-Hua, FU Shou-Kuan, LI Min-Qian, CHEN Sheng-Fu, XIONG Qi-Hua. Preparation of Polymeric Nanoparticles and Observa tion on the Structure of Novel Nanosized Physical Hydrogels by AFM and SEM Methods[J]. Chem. J. Chinese Universities, 1999, 20(6): 984.

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Preparation of Polymeric Nanoparticles and Observa tion on the Structure of Novel Nanosized Physical Hydrogels by AFM and SEM Methods

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