ANSTO Publications Online >
Journal Publications >
Journal Articles >

Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/2921

Title: Reactive block copolymer modified thermosets: highly ordered nanostructures and improved properties.
Authors: Hameed, N
Guo, Q
Xu, ZG
Hanley, TL
Mai, YW
Keywords: Nanostructures
Copolymers
Tensile Properties
Morphology
Epoxides
Curing
Issue Date: 21-Dec-2010
Publisher: Royal Society of Chemistry
Citation: Hameed, N., Guo, Q., Xu, Z. G., Hanley, T. L., & Mai, Y. W. (2010). Reactive block copolymer modified thermosets: highly ordered nanostructures and improved properties. Soft Matter, 6(24), 6119-6129.
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. © 2010, Royal Society of Chemistry
URI: http://dx.doi.org/10.1039/c0sm00480d
http://apo.ansto.gov.au/dspace/handle/10238/2921
ISSN: 1744-683X
Appears in Collections:Journal Articles

Files in This Item:

There are no files associated with this item.

Items in APO are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback