کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1522896 1511823 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Micellization behavior of tertiary amine-methacrylate-based block copolymers characterized by small-angle X-ray scattering and dynamic light scattering
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Micellization behavior of tertiary amine-methacrylate-based block copolymers characterized by small-angle X-ray scattering and dynamic light scattering
چکیده انگلیسی

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 Å, a PDMA-shell thickness of 27 Å, and an aggregation number of 127.


► Water-soluble diblock copolymers have been synthesized via GTP.
► AB diblock copolymers form B-core micelles in aqueous media at basic pH values.
► AB diblock copolymers depend on the n/m, Mw, solution temperature and solution pHs.
► By SAXS, micellization behaviors of the AB diblock copolymers were determined.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 138, Issues 2–3, 15 March 2013, Pages 559–564
نویسندگان
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