Jump to main content
Jump to site search

Issue 24, 2010
Previous Article Next Article

Reactive block copolymer modified thermosets: highly ordered nanostructures and improved properties

Author affiliations

Abstract

A highly ordered poly(dimethyl siloxane)-poly(glycidyl methacrylate) (PDMS-PGMA) reactive diblock copolymer was synthesized and used to modify bisphenol A-type epoxy resin (ER). The PDMS-PGMA block copolymer consisted of epoxy-miscible PGMA blocks and an epoxy-immiscible PDMS block. The PGMA reactive block of the block copolymer formed covalent bonds with cured epoxy and was involved in the network formation, and the PDMS block phase separated to give different ordered and disordered nanostructures at different blend compositions. The solvent cast PDMS-PGMA diblock copolymer showed ordered hexagonal cylindrical morphology. A highly ordered morphology consisting of hexagonal cylinders inside the lamellar morphology was observed in the cured PDMS-PGMA block copolymer. In the cured ER/PDMS-PGMA blends, a variety of morphologies including lamellar, cubic and worm-like and spherical nanostructures were detected depending on the blend composition. Moreover, the addition of this reactive diblock copolymer significantly increases the hydrophobicity and the glass transition temperature. It also improves the tensile strength and tensile ductility of the nanostructured thermosets at low diblock copolymer contents.

Graphical abstract: Reactive block copolymer modified thermosets: highly ordered nanostructures and improved properties

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 06 Jun 2010, accepted on 03 Sep 2010 and first published on 23 Sep 2010


Article type: Paper
DOI: 10.1039/C0SM00480D
Citation: Soft Matter, 2010,6, 6119-6129
  •   Request permissions

    Reactive block copolymer modified thermosets: highly ordered nanostructures and improved properties

    N. Hameed, Q. Guo, Z. Xu, T. L. Hanley and Y. Mai, Soft Matter, 2010, 6, 6119
    DOI: 10.1039/C0SM00480D

Search articles by author