Synthesis of Novel μ-Star Copolymers with Poly(N-Octyl Benzamide) and Poly(ε-Caprolactone) Miktoarms through Chain-Growth Condensation Polymerization, Styrenics-Assisted Atom Transfer Radical Coupling, and Ring-Opening Polymerization.

Authors :: Huang CF
Aimi J
Lai KY
Source :: Macromolecular rapid communications [Macromol Rapid Commun] 2017 Feb; Vol. 38 (3). Date of Electronic Publication: 2016 Dec 14.
Publication Year :: 2017
Abstract: Star copolymers are known to phase separate on the nanoscale, providing useful self-assembled morphologies. In this study, the authors investigate synthesis and assembly behavior of miktoarm star (μ-star) copolymers. The authors employ a new strategy for the synthesis of unprecedented μ-star copolymers presenting poly(N-octyl benzamide) (PBA) and poly(ε-caprolactone) (PCL) arms: a combination of chain-growth condensation polymerization, styrenics-assisted atom transfer radical coupling, and ring-opening polymerization. Gel permeation chromatography, mass-analyzed laser desorption/ionization mass spectrometry, and <superscript>1</superscript> H NMR spectroscopy reveal the successful synthesis of a well-defined (PBA <subscript>11</subscript> ) <subscript>2</subscript> -(PCL <subscript>15</subscript> ) <subscript>4</subscript> μ-star copolymer (M <subscript>n</subscript> <subscript>,NMR</subscript> ≈ 12 620; Đ = 1.22). Preliminary examination of the PBA <subscript>2</subscript> PCL <subscript>4</subscript> μ-star copolymer reveals assembled nanofibers having a uniform diameter of ≈20 nm.<br /> (© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Subjects :: Benzamides chemical synthesis
Free Radicals chemistry
Molecular Structure
Particle Size
Polyesters chemical synthesis
Polymers chemical synthesis
Surface Properties
Benzamides chemistry
Polyesters chemistry
Polymerization
Polymers chemistry

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