Project Details
Abstract
Due to its superior properties and complex polymorphic structure, syndiotactic polystyrene (sPS) has attracted a great deal of commercial and academic interests during the past two decades. At least four different crystalline forms, termed α, β, γ and δ, have been reported for it. The four different forms lead to different physical properties (e.g., melting temperature, crystallization rate ….). In spite of possessing many advantages over certain commercially important engineering plastics, sPS shows disadvantages of slower crystallization rate and lower impact strength. In order to broaden its versatility, sPS has been chosen as a component for blends and/or composites. Some results regarding the studies of sPS-based blends, including sPS/aPS, sPS/iPS, sPS/PPO, sPS/nylon and sPS/PVME systems etc., were reported. However, up till now, the studies on the sPS-based composites were limited, especially for the multi-component nanocomposite systems. In this (following) 2-year research project, the sPS and sPS-blend based nanocomposites will be prepared, and the prepared samples then will be characterized in detail to reveal the relationship between structure and properties. The fabrication and investigation on sPS/organoclay nanocomposites with different types/loadings of organoclays are being carried out now (nsc-project). A toughener is incorporated into the sPS/organoclay nanocomposites to develop toughened sPS/organoclay nanocomposites. In the first year of this proposed project (following the latest project), neat and modified multi-walled carbon nanotubes (MWNTs) will be used as the nanofillers, instead of organoclays, to prepare sPS/MWNT nanocomposites for characterizations. The influence of adding a styrene-included toughener on the properties of prepared nanocompoiste will be studied. In the second year, sPS/PPO/organoclay and sPS/PPO/MWNT nanocomposites with sPS as the main component will be prepared for characterizations. The studies on the relationship among structure-phase morphology-properties of the prepared nanocomposites will be focused, especially the crystal form developed for sPS. The instruments and equipments that will be employed for this 2-year research project include: DSC, TGA, PLM, FESEM/EDS, TEM, DMA, WAXD, SAXS, rheometer, internal mixer, tensile/flexural/impact tester etc.Due to its superior properties and complex polymorphic structure, syndiotactic polystyrene (sPS) has attracted a great deal of commercial and academic interests during the past two decades. At least four different crystalline forms, termed α, β, γ and δ, have been reported for it. The four different forms lead to different physical properties (e.g., melting temperature, crystallization rate ….). In spite of possessing many advantages over certain commercially important engineering plastics, sPS shows disadvantages of slower crystallization rate and lower impact strength. In order to broaden its versatility, sPS has been chosen as a component for blends and/or composites. Some results regarding the studies of sPS-based blends, including sPS/aPS, sPS/iPS, sPS/PPO, sPS/nylon and sPS/PVME systems etc., were reported. However, up till now, the studies on the sPS-based composites were limited, especially for the multi-component nanocomposite systems. In this (following) 2-year research project, the sPS and sPS-blend based nanocomposites will be prepared, and the prepared samples then will be characterized in detail to reveal the relationship between structure and properties. The fabrication and investigation on sPS/organoclay nanocomposites with different types/loadings of organoclays are being carried out now (nsc-project). A toughener is incorporated into the sPS/organoclay nanocomposites to develop toughened sPS/organoclay nanocomposites. In the first year of this proposed project (following the latest project), neat and modified multi-walled carbon nanotubes (MWNTs) will be used as the nanofillers, instead of organoclays, to prepare sPS/MWNT nanocomposites for characterizations. The influence of adding a styrene-included toughener on the properties of prepared nanocompoiste will be studied. In the second year, sPS/PPO/organoclay and sPS/PPO/MWNT nanocomposites with sPS as the main component will be prepared for characterizations. The studies on the relationship among structure-phase morphology-properties of the prepared nanocomposites will be focused, especially the crystal form developed for sPS. The instruments and equipments that will be employed for this 2-year research project include: DSC, TGA, PLM, FESEM/EDS, TEM, DMA, WAXD, SAXS, rheometer, internal mixer, tensile/flexural/impact tester etc.
Project IDs
Project ID:PB10007-0374
External Project ID:NSC100-2221-E182-018
External Project ID:NSC100-2221-E182-018
Status | Finished |
---|---|
Effective start/end date | 01/08/11 → 31/07/12 |
Keywords
- sPS
- MWNT
- Organoclay
- Blend
- Nanocomposite
- Thermal Properties
- Phase Morphology
- Mechanical Properties
Fingerprint
Explore the research topics touched on by this project. These labels are generated based on the underlying awards/grants. Together they form a unique fingerprint.