Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/15200
Title: Preparation, morphology and thermal/ mechanical properties of Epoxy-NanoClay composites
Authors: WANG LEI
Keywords: Epoxy, Clay, Nanocomposite, Fracture, Morphology, Thermal/mechanical
Issue Date: 29-Apr-2006
Source: WANG LEI (2006-04-29). Preparation, morphology and thermal/ mechanical properties of Epoxy-NanoClay composites. ScholarBank@NUS Repository.
Abstract: In this thesis, three types of clay exfoliation approaches, using different amount of surfactant, have been employed to synthesize high performance epoxy-nanoclay composites. Among the three approaches, two innovated methods are developed to prepare epoxy-clay nanocomposites with reduced/eliminated surfactants as compared to the normally used commercial organoclay, the southern clay 93A, which is widely used with 30 wt% of alkyl-ammonium ions surfactant modifier. Self-modified raw clay with 5 wt% silane surfactant and raw clay with no surface modifier are used as comparisons. TThe effects of different approaches to the morphology and thermal/mechanical properties and fracture behavior of the nanocomposites were studied. It has been found that morphologies of the composites were significantly influenced by different preparation methods, which also lead to a dramatic change in their thermal and mechanical properties of the resulting nanocomposites. The relations between the morphologies and properties were discussed and possible reinforcing mechanisms were proposed.
URI: http://scholarbank.nus.edu.sg/handle/10635/15200
Appears in Collections:Ph.D Theses (Open)

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