Beheshty, M. H. and Vafayan, M. and Poorabdollah, M. (2009) Low Profile Unsaturated Polyester Resin-Clay Nanocomposite Properties. POLYMER COMPOSITES, 30 (5). pp. 629-638. ISSN 0272-8397
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Official URL: http://www3.interscience.wiley.com/journal/1198800...
Unsaturated polyester (UP)/organically modified clay (OMC) nanocomposites were prepared by multistep simultaneous mixing of UP oligomer chain, styrene (St) monomer, and OMC. X-ray diffraction, transmission electron microscopy, dynamic mechanical thermal analysis, and scanning electron microscopy data were in support of the formation of a partially intercalated nano-composite. The glass transition temperatures of the nanocomposites revealed that the crosslinking reaction occurred homogeneously inside and outside of the OMC galleries. Adding 3 wt% OMC improved the flextural and storage modulus of UP by 31.5% and 30.2%, respectively. The Izod impact strength of UP was also improved by 51.7% at 1 wt% of OMC loading. Similar results were obtained for low-profile UP/St/OMC nanocomposites. Resin shrinkage data measured by inhouse constructed apparatus showed that, at an OMC content of 3 wt%, the UP/St/OMC/low profile additive (LPA) system cannot provide superior volume shrinkage control. But, it is found that the use of nanoscale reinforcement in the UP systems is able to restore flextural and storage moduli loss when using LPAs. POLYM. COMPOS., 30:629-638, 2009. (C) 2008 Society of Plastics Engineers
|Subjects:||Physical Science > Nanophysics|
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Physics|
Faculty of Engineering, Science and Mathematics > School of Chemistry
|Deposited On:||16 Nov 2009 10:29|
|Last Modified:||16 Nov 2009 10:29|
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