Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/35990
Title: Interactions between amphiphilic polymers and cyclodextrins
Authors: Liao, Dongsheng
Keywords: DRNTU::Engineering::Materials::Organic/Polymer electronics
Issue Date: 2007
Source: Liao, D. S. (2007). Interactions between amphiphilic polymers and cyclodextrins. Doctoral thesis, Nanyang Technological University, Singapore.
Abstract: The solution properties of various types of telechelic hydrophobically modified ethylene oxide urethane polymer (HEUR) in the presence of cyclodextrins were examined. Methylated (3 cyclodextrin (m-pCD) could effectively reduce the steady shear viscosity and the dynamic moduli of HEUR aqueous solutions. It was found that m- PCD interacts with HEUR in three progressive steps. At very low m-(3CD concentrations, m-pCD encapsulates the hydrophobes of looping HEUR chains, which destabilizes the transient network, while maintaining the number of mechanically active chains. However, the m-pCD/HEUR complex solutions become more sensitive to shear stress. At moderate m-pCD concentrations, m-pCD begins to deactivate the bridging chains resulting in a reduction in the number of mechanically active chains and this further weakens the transient network. Finally, when m-pCD is in excess, the network Methylated P-Cyclodextrin could effectively reduce the steady shear viscosity and dynamic moduli of HEUR aqueous solutions.
Description: 285 p.
URI: https://hdl.handle.net/10356/35990
DOI: 10.32657/10356/35990
Fulltext Permission: open
Fulltext Availability: With Fulltext
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