Thermal and mechanical properties of a dendritic hydroxyl-functional hyperbranched polymer and tetrafunctional epoxy resin blends

Zhang, Jin, Guo, Qipeng and Fox, Bronwyn 2010, Thermal and mechanical properties of a dendritic hydroxyl-functional hyperbranched polymer and tetrafunctional epoxy resin blends, Journal of polymer science part B : polymer physics, vol. 48, no. 4, pp. 417-424.

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Title Thermal and mechanical properties of a dendritic hydroxyl-functional hyperbranched polymer and tetrafunctional epoxy resin blends
Author(s) Zhang, Jin
Guo, Qipeng
Fox, Bronwyn
Journal name Journal of polymer science part B : polymer physics
Volume number 48
Issue number 4
Start page 417
End page 424
Total pages 8
Publisher John Wiley & Sons
Place of publication Hoboken, N.J.
Publication date 2010-02-15
ISSN 0887-6266
1099-0488
Summary Blends of a tetrafunctional epoxy resin, tetraglycidyl- 4,40'-diaminodiphenylmethane (TGDDM), and a hydroxylfunctionalized hyperbranched polymer (HBP), aliphatic hyperbranched polyester Boltorn H40, were prepared using 3,3'-diaminodiphenyl sulfone (DDS) as curing agent. The phase behavior and morphology of the DDS-cured epoxy/HBP blends with HBP content up to 30 phr were investigated by differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and scanning electron microscopy (SEM). The phase behavior and morphology of the DDS-cured epoxy/HBP blends were observed to be dependent on the blend composition. Blends with HBP content from 10 to 30 phr, show a particulate morphology where discrete HBP-rich particles are dispersed in the continuous cured epoxy-rich matrix. The cured blends with 15 and 20 phr exhibit a bimodal particle size distribution whereas the cured blend with 30 phr HBP demonstrates a monomodal particle size distribution. Mechanical measurements show that at a concentration range of 0–30 phr addition, the HBP is able to almost double the fracture toughness of the unmodified TGDDM epoxy resin. FTIR displays the formation of hydrogen bonding between the epoxy network and the HBP modifier.
Language eng
Field of Research 091202 Composite and Hybrid Materials
Socio Economic Objective 880399 Aerospace Transport not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Persistent URL http://hdl.handle.net/10536/DRO/DU:30025542

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