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Citation: CHEN Yong-Chun, CHEN Chao, CAO Hong-Yan, XU Zu-Shun, CHENG Shi-Yuan. The Aggregation Structure of PMMA-g-PEO in Toluene[J]. Chinese Journal of Applied Chemistry, ;2002, 19(7): 662-666. shu

The Aggregation Structure of PMMA-g-PEO in Toluene

1.
a School of Chemistry and Material Science, Hubei University, Wuhan 430062;
2.
b School of Material, Wuhan University of Technology, Wuhan

Corresponding author: CHEN Yong-Chun,
Received Date: 26 November 2001
Available Online: 3 April 2002
Fund Project:

The NMR results indicated that toluene is a selective solvent for amphiphilic graft copolymer poly(methyl methylacrylate)-g-poly(ethylene oxide)(PMMA-g-PEO). The reversed-micelles were formed in toluene with PEO side chains as core and PMMA backbones as shells. TEM, DLS and viscosity measurement revealed that the aggregation structure is dependent on the temperature and concentration of the PMMA-g-PEO solution, at higher temperature the reversed-micelle can be formed in a lower concentration. The aggregation structure is changed in a certain range of concentration and temperature, as shown in following schemes. (1) Single molecular solution ???20020713-3??? Small reversed-micelle ???20020713-3??? Large reversed micelle (2) Large reversed-micelle ???20020713-4??? Smalle reversed-micelle ???20020713-4??? Single molecular solution
- poly(methyl methacrylate)-g-poly(ethylene oxide),
- amphiphilic graft copolymer,
- aggregation-structure,
- micelle
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