SELF-ASSEMBLED AND NANOSTRUCTURED COPOLYMER AGGREGATIONS OF THE TERTIARY AMINE METHACRYLATE BASED TRIBLOCK COPOLYMERS


ÖZCAN Y., Orujalipoor I., Huang Y., BÜTÜN V., Jeng U.

ANALYTICAL LETTERS, cilt.48, ss.2693-2707, 2015 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 48 Konu: 17
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1080/00032719.2015.1046552
  • Dergi Adı: ANALYTICAL LETTERS
  • Sayfa Sayıları: ss.2693-2707

Özet

The micellization behavior of novel tertiary amine methacrylate-based ABA type triblock copolymers formed by poly[2-(dimethylamino)ethyl methacrylate] [PDMA] middle block and poly[2-(diethylamino)ethyl methacrylate] [PDEA] or poly[2-(diisopropylamino)ethyl methacrylate] [PDPA] side blocks, PDPA(m)-b-PDMA(n)-b-PDPA(l), and PDEA(m)-b-PDMA(n)-b-PDEA(l) was investigated. Both types of triblock copolymers were water-soluble and had potential for various applications due to their self-assembled and the bottom-up nanoscale micellar construction. The micellar aggregations of the triblock copolymers in aqueous solutions with varying comonomer ratios, molecular weights, temperatures, and pH values were investigated by small-angle X-ray scattering and dynamic light scattering. Compact micellar aggregations were obtained as 0.5 weight percent solutions at 20-21 degrees C and pH 8.67 to 9.05, and characterized as polydispersed spherical core-shells. One group of triblock copolymer micelles had PDPA-cores with radii from 18 to 21 angstrom and PDMA-shell thicknesses of 89-105 angstrom, whereas the other group had PDEA-core spherical micelles with core radii of 60-62 angstrom and a PDMA-shell thicknesses of 64-66 angstrom.