Aggregation behavior of X-shaped branched block copolymers at the air/water interface: effect of block sequence and temperature
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- 作者：Yijian Chen ; Teng Liu ; Guiying Xu ; Juan Zhang ; Xueru Zhai…
- 关键词：Tetronic 1107 ; Tetronic 90R4 ; Block sequence ; Temperature ; Surface dilational viscoelasticity
- 刊名：Colloid & Polymer Science
- 出版年：2015
- 出版时间：January 2015
- 年：2015
- 卷：293
- 期：1
- 页码：97-107
- 全文大小：1,694 KB
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Teng Liu (1)
Guiying Xu (1)
Juan Zhang (1)
Xueru Zhai (1)
Jing Yuan (1)
Yebang Tan (1)
1. Key Laboratory of Colloid and Interface Chemistry, (Shandong University), Ministry of Education, Jinan, 250100, People’s Republic of China - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Polymer Sciences
Physical Chemistry
Soft Matter and Complex Fluids
Characterization and Evaluation Materials
Food Science - 出版者：Springer Berlin / Heidelberg
- ISSN：1435-1536
文摘
The aggregation behaviors of X-shaped block copolymers, Tetronic 1107 and Tetronic 90R4 with a sequential and reverse architecture, at the air/water interface were studied. The effects of block sequence, concentration, and temperature were investigated by equilibrium surface tension, surface dilational viscoelasticity, and surface tension relaxation measurements. The conformations of Tetronic 1107 and Tetronic 90R4 are different at the air/water interface. The possible adsorption model of Tetronic 1107 is “brush-and that of Tetronic 90R4 is invert “umbrella- With the increase of temperature, the dilational modulus of Tetronic 1107 solutions decreases, while that of Tetronic 90R4 solutions increases. The mechanisms of the temperature which effects on the conformational transition of Tetronic 1107 and Tetronic 90R4 were discussed in detail. Furthermore, the thermodynamic parameters for the micellization of Tetronic 1107 and Tetronic 90R4 were compared at different temperatures.