Micellization behavior of tertiary amine-methacrylate-based block copolymers characterized by small-angle X-ray scattering and dynamic light scattering

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题名:	Micellization behavior of tertiary amine-methacrylate-based block copolymers characterized by small-angle X-ray scattering and dynamic light scattering
作者:	?zcan, Y., Ide, S., Jeng, U., B?t?n, V., Lai, Y.H., Su, C.H.
关键词:	Chemical synthesis;Light scattering;Polymers;Small-angle scattering
日期:	2013
上传时间:	2013-05-21T09:08:01Z (UTC)
出版者:	Department of Chemistry, Tunghai University
摘要:	We have studied the micellization behavior of tertiary amine methacrylate-based diblock copolymers, comprising the hydrophobic poly[2-(diethylamino)ethyl methacrylate] (PDEA) and hydrophilic/polyelectrolyte poly[2-(dimethylamino)ethyl methacrylate] (PDMA) blocks. Revealed by small-angle X-ray scattering (SAXS) and dynamics light scattering, micelle size of the PDMAm-b-PDEAn diblock copolymer in aqueous solution depends sensitively on the comonomer ratio n/m, molecular weight Mw, solution temperature, and solution pH values. Aggregation number is found to follow an empirical relation of N (n/m)1.6, disregarding the molecular mass. With n/m = 0.5, Mw ? 12,000, and pH = 7.6, the diblock copolymer forms spherical core-shell micelles at 23 °C, with a PDEA-core radius of 52, a PDMA-shell thickness of 27, and an aggregation number of 127. ? 2013 Elsevier B.V. All rights reserved.
關聯:	Materials Chemistry and Physics 138 (2-3) , pp. 559-564
显示于类别:	[化學系所] 期刊論文

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