Clustering and Dissolution of Triazole Branched Poly(ethyl methylacrylate)

Title
Clustering and Dissolution of Triazole Branched Poly(ethyl methylacrylate)
Authors
손대원
Keywords
clusters; dissolution; dynamic light scattering; small angle neutron scattering; thermoresponsive polymer
Issue Date
2015-06
Publisher
WILEY-V C H VERLAG GMBH
Citation
MACROMOLECULAR CHEMISTRY AND PHYSICS, v. 216, NO 11, Page. 1251-1259
Abstract
The solution properties of the multiresponsive polymer P1 (poly(2-((3-(1-(2-(dimethylamino)ethyl)-1H-1,2,3-triazol-4-yl)propanoyl)oxy)ethyl methacrylate) are studied by small angle neutron scattering (SANS) and dynamic light scattering (DLS). The P1 solution exhibits a phase transition above certain temperatures and cloud points following dissolution through the incubation at room temperature. SANS and DLS studies show that P1 forms clusters via hydrophobic interactions, which are weakened by continued incubation. The temperature dependent cluster formation is explained by hydrophobic adsorption and shrinking behavior as a function of hydrodynamic radius, correlation lengths, and Porod exponents. The weak clustering and solution property are discussed on the basis of Flory theory. Taken together, the results here indicate that time-dependent dissolution of P1 leads to a weakly hydrophobic structure.
URI
http://onlinelibrary.wiley.com/doi/10.1002/macp.201400621/fullhttp://hdl.handle.net/20.500.11754/25776
ISSN
1022-1352; 1521-3935
DOI
http://dx.doi.org/10.1002/macp.201400621
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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