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Citation: Lu Dong-Yun, Wen Hao, Liu Hui-Zhou, Xu Zhi-Hong. Temperature Effects on Block Copolymer Micelle Based on the Scaling Model[J]. Acta Physico-Chimica Sinica, ;2004, 20(01): 38-42. doi: 10.3866/PKU.WHXB20040108 shu

Temperature Effects on Block Copolymer Micelle Based on the Scaling Model

1.
Institute of Process Engineering, Chinese Academy of Sciences, Beijing　100080

Received Date: 19 June 2003
Available Online: 15 January 2004

A model based on scaling theory was developed for the description of the diblock copolymer micelle system. The temperature effects on micelle equilibrium properties were investigated by the Flory-Huggins interaction parameter of polymer segment and solvent. By analysis of the chain-state in micelle corona, a multi-section density distribution function was proposed and the temperature effects on aggregation number, corona density distribution, micelle inner and outer radius were observed. The calculation results show that with increasing temperature, the change of chain-state in corona has little effect on the corona density, and the micelle aggregation number will rapidly increase with the slightly growing of the micelle radius, which implies the solvent squeezing from corona and the result is consistent with experiments.
- Block copolymer;Scaling theory;Temperature effect;Density distribution
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