Aggregation behaviors of PEO-PPO-ph-PPO-PEO and PPO-PEO-ph-PEO-PPO at an air/water interface experimental study and molecular dynamics simulation

Aggregation behaviors of PEO-PPO-ph-PPO-PEO and PPO-PEO-ph-PEO-PPO at an air/water interface : experimental study and molecular dynamics simulation

The block polyethers PEO-PPO-ph-PPO-PEO (BPE) and PPO-PEO-ph-PEO-PPO (BEP) are synthesized by anionic polymerization using bisphenol A as initiator. Compared with Pluronic P123, the aggregation behaviors of BPE and BEP at an air/water interface are investigated by the surface tension and dilational...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 28(2012), 38 vom: 25. Sept., Seite 13590-600
1. Verfasser: Gong, Houjian (VerfasserIn)
Weitere Verfasser: Xu, Guiying, Liu, Teng, Xu, Long, Zhai, Xueru, Zhang, Jian, Lv, Xin
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2012
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Benzhydryl Compounds Phenols Water 059QF0KO0R pluronic block copolymer P123 2E9U4Y94DB Polyethylene Glycols 3WJQ0SDW1A mehr... Poloxalene 9003-11-6 bisphenol A MLT3645I99
Beschreibung
Zusammenfassung:The block polyethers PEO-PPO-ph-PPO-PEO (BPE) and PPO-PEO-ph-PEO-PPO (BEP) are synthesized by anionic polymerization using bisphenol A as initiator. Compared with Pluronic P123, the aggregation behaviors of BPE and BEP at an air/water interface are investigated by the surface tension and dilational viscoelasticity. The molecular construction can influence the efficiency and effectiveness of block polyethers in decreasing surface tension. BPE has the most efficient ability to decrease surface tension of water among the three block polyethers. The maximum surface excess concentration (Γ(max)) of BPE is larger than that of BEP or P123. Moreover, the dilational modulus of BPE is almost the same as that of P123, but much larger than that of BEP. The molecular dynamics simulation provides the conformational variations of block polyethers at the air/water interface
Beschreibung:Date Completed 14.02.2013
Date Revised 11.12.2018
published: Print-Electronic
Citation Status MEDLINE
ISSN:1520-5827