ORCID Profile
0000-0002-3835-8345
Current Organisation
Hong Kong University of Science and Technology
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Publisher: Wiley
Date: 08-03-2011
DOI: 10.1002/SIA.3627
Publisher: Elsevier BV
Date: 08-2000
Publisher: Elsevier BV
Date: 12-2011
Publisher: Elsevier BV
Date: 10-2006
Publisher: Informa UK Limited
Date: 02-03-2009
Publisher: Elsevier BV
Date: 06-2010
Publisher: American Chemical Society (ACS)
Date: 11-11-2008
DOI: 10.1021/MA801095D
Publisher: Elsevier BV
Date: 03-2011
Publisher: Wiley
Date: 21-08-2007
DOI: 10.1002/APP.27017
Publisher: Informa UK Limited
Date: 2001
Publisher: American Chemical Society (ACS)
Date: 15-01-2000
DOI: 10.1021/MA9819485
Publisher: Wiley
Date: 16-05-2000
DOI: 10.1002/(SICI)1097-4628(20000516)76:7<1000::AID-APP3>3.0.CO;2-X
Publisher: Elsevier BV
Date: 07-2004
Publisher: Elsevier BV
Date: 03-2011
Publisher: American Scientific Publishers
Date: 09-2011
Abstract: Halloysite nanotubes (HNTs) are a naturally occurring nanotubular aluminosilicate mineral, which has been used to prepare nanocomposites with exceptional mechanical properties. In order to understand the roles of nanotubes during the deformation and fracture of nanocomposites, a state-of-the-art transmission electron microscope (TEM) with a bending stage was used to measure the Young's modulus of in idual HNTs. TEM micrographs showed that the HNTs were surprising flexible and could be bent to almost 90 degrees without fracture. There was no observable reduction in the cross-sectional area of the bent HNTs. The findings suggest that HNTs, as a nanofiller, have a good potential to be used in high-performance structural materials, especially polymer-based nanocomposites.
Publisher: Elsevier BV
Date: 05-2002
Publisher: Elsevier BV
Date: 02-2011
DOI: 10.1016/J.JCIS.2010.10.069
Abstract: The ability of stearate coated calcium carbonate nanoparticles to promote the nucleation of polypropylene (PP) was investigated systematically. The effects of surfactant coverage and CaCO(3) particle concentration were explored using differential scanning calorimetry as well as optical and atomic microscopies. The results indicate that at the crystallization temperature of PP, a monolayer stearate coating remains as a rigid layer and provides a noticeable nucleating effect. Insufficient or excess coating diminishes the nucleating effect, the former because of the formation of agglomerates, and the latter by forming a soft layer at the PP/CaCO(3) interface at high temperatures, leading to the weak nucleating ability. Monolayer-coated nanoparticles had the strongest nucleating effect. The crystallization temperature and crystallization rate increased with the concentration of the monolayer-coated nanoparticles up to 40wt.%.
Publisher: Elsevier BV
Date: 06-2011
DOI: 10.1016/J.JCIS.2011.03.009
Abstract: High-impact polystyrene (PS) nanocomposites filled with in idually dispersed halloysite nanotubes (HNTs) were prepared by emulsion polymerization of styrene in the presence of HNTs with sodium dodecyl sulfate (SDS) as the emulsifier. The SDS is a good dispersing agent for HNTs in aqueous solution. The emulsion polymerization resulted in the formation of polystyrene nanospheres separating in idual HNTs. Transmission electron microscopy revealed that the HNTs were uniformly dispersed in the PS matrix. Differential scanning calorimetry, Fourier-transform infrared spectroscopy and thermogravimetry were used to characterize the PS/HNT nanocomposites. The impact strength of the PS/HNTs nanocomposites was 300% higher than that of the neat PS. This paper presents a simple yet feasible method for the preparation of high-impact PS/halloysite nanocomposites.
Publisher: Wiley
Date: 03-10-2011
DOI: 10.1002/APP.35101
No related grants have been discovered for Chi Ming Chan.