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

Hameed, Nishar, Guo, Qipeng, Xu, Zhiguang, Hanley, Tracey L. and Mai, Yiu-Wing 2010, Reactive block copolymer modified thermosets : highly ordered nanostructures and improved properties, Soft matter, vol. 6, no. 24, pp. 6119-6129.

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Title Reactive block copolymer modified thermosets : highly ordered nanostructures and improved properties
Author(s) Hameed, Nishar
Guo, Qipeng
Xu, Zhiguang
Hanley, Tracey L.
Mai, Yiu-Wing
Journal name Soft matter
Volume number 6
Issue number 24
Start page 6119
End page 6129
Total pages 11
Publisher Royal Society of Chemistry
Place of publication Cambridge, England
Publication date 2010
ISSN 1744-683X
1744-6848
Summary 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.
Language eng
Field of Research 091209 Polymers and Plastics
Socio Economic Objective 870303 Polymeric Materials (e.g. Paints)
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©2010, The Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30035294

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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