Self-assembly of amphiphilic hyperbranched poly (aryl ether ketone)-block-poly (ethylene glycol) copolymer into microspheres with excellent thermal property. (November 2014)

• Record Type: Journal Article
• Authors: Guo, Yunliang; Zhang, Shuling; Yang, Lilong; Li, Feng; Li, Wenlei; Du, Yinlong; Wang, Guibin
• Is Part Of: High performance polymers. Volume 26:Number 7(2014:Nov.)
• Page Start: 703
• Page End: 711
• Publication Date: 2014-11
• Subjects: Amphiphilic -- hyperbranched poly (aryl ether ketone) -- self-assembly -- microsphere -- thermal stability; Polymerization -- Periodicals; Polymers -- Periodicals; 547.7
• DOI: 10.1177/0954008314526908
• Languages: English
• ISSNs: 0954-0083

Abstract

An amphiphilic hyperbranched rod-coil copolymer was synthesized by grafting linear poly (ethylene glycol) (PEG) onto hydroxyl-terminated hyperbranched poly (aryl ether ketone) (OH-HPAEK). The molecular structure, the number-average molecular weight and the thermal properties of HPAEK- block -PEG were confirmed and characterized using proton nuclear magnetic resonance, Fourier transform infrared spectroscopy, gel permeation chromatography, differential scanning calorimetry, and thermogravimetric analysis, respectively. The microspheres of HPAEK- block -PEG were fabricated by the method of self-assembly, and the morphology and diameter of the obtained microspheres were characterized using transmission electron microscopy, scanning electron microscopy, and dynamic light scattering. The heat-treated experimental results demonstrated that the polymer microspheres possessed excellent thermal property that could stably exist even if heated at 130°C for 10 h. In addition, the diameter of the microspheres can be easily controlled by just adjusting the concentration of the copolymer.