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

  • Y. Özcan
  • , S. Ide
  • , U. Jeng
  • , V. Bütün
  • , Y. H. Lai
  • , C. H. Su
  • Pamukkale University
  • National Synchrotron Radiation Research Center Taiwan
  • National Tsing Hua University
  • Osmangazi University
  • Tunghai University
  • Industrial Technology Research Institute of Taiwan

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)559-564
Number of pages6
JournalMaterials Chemistry and Physics
Volume138
Issue number2-3
DOIs
Publication statusPublished - 15 Mar 2013

Keywords

  • Chemical synthesis
  • Light scattering
  • Polymers
  • Small-angle scattering

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