Rheological evaluation of the fabrication parameters of cellulose acetate butyrate membrane on CO2/N2 separation performance

The rise in emission of greenhouse gases (GHGs) mainly carbon dioxide (CO2) in recent years due to rapid development of modern civilisation, has been listed as the primary contributor to global warming. To address this global issue, membrane technology was applied and developed intensively because of its superior performance in terms of efficiency and economic advantages. In this study, the cellulose acetate butyrate (CAB) polymer was selected as the polymer matrix material since it exhibited excellent film-forming properties. In addition, the wet-phase inversion technique was adopted to synthesise the membrane based on different casting conditions. The optimum outcomes of the fabrication conditions were then characterised with the scanning electron micrograph (SEM) to determine the best CAB membrane for CO2/N2 separation. The results showed that CAB-70000 fabricated with 4 wt% of CAB polymer concentration, casting thickness of 250 µm, solvent evaporation time of 5 minutes, and 30 minutes of solvent exchange for isopropyl alcohol and n-hexane, exhibited the best gas separation performance. Further, CAB-70000 showed an average selectivity of 6.12 ± 0.09 and permeance up to 227.95 ± 0.39 GPU for CO2 and 37.28 ± 0.54 GPU for N2, respectively. In summary, this study is expected to show a detailed outline of the future direction and perspective of the novel CAB polymeric membrane that is suitable to be applied in the industry, and serves as an insight for researchers and manufacturers working in the related field of gas separation

Chromosome abnormalities in amniotic and chorionic villus cells in Singapore.

Journal of the Singapore Paediatric Society331-216-2

Chemical, physical, and morphological characteristics of nanomaterials for CO2 capture and conversion

The major cause of global warming and ocean acidification are due to the anthropogenic emissions of CO2 from industrial development. Till date, various mitigation strategies had been proposed for CO2 capture from different effluent sources. Presently, due to commercial impact and vast potential of nanotechnology, it had attracted various attention of research sectors nationwide. Nanotechnology is prominent in several fields such as health care, agriculture, industries, science and technology where intensive investigation, development, production, and processing of structure and materials had been done in the recent years to enhance the materials properties. However, viability of such materials became uncertain due to the irregularities and ambiguities in dimensions and chemical compositions. More concerns arise about the efficiency of mass transfer, transformation of nanomaterials and impacts towards the environment. In this regards, a comprehensive analysis of the present phase of knowledge concerning the morphology of nanomaterials properties has been discussed in depth. Several nanomaterials include carbon nanotubes, graphene-based nanomaterials, nanoclay composites, metal organic frameworks, nanostructured thin films with their applications were highlighted here. In addition, novel development, and breakthrough applications with nanomaterials in separation and purification processes are discussed in detail. Nonetheless, the distinctive characteristics and functions of nanomaterials together with the challenges for their applications and mass scale fabrication were also discussed. Some future perspective and possible areas of study are highlighted in the end of the chapter.Scopu

Development of train movement simulator for analysis and optimization of railway signalling systems

IEE Conference Publication453243-248IECP

Reference values for 24 biochemical constituents of children in Singapore

Annals of the Academy of Medicine Singapore13185-90AAMS

Schottky barrier height in germanide/Ge contacts and its engineering through germanidation induced dopant segregation

10.1109/IWJT.2007.4279954Extended Abstracts of the 7th International Workshop on Junction Technology, IWJT 200781-8

Material and electrical characterization of Ni- And Pt-germanides for p-channel germanium Schottky source/drain transistors

Extended Abstracts of the Sixth International Workshop on Junction Technology, IWJT '06164-16

Multiple copies of a rare rearrangement of Philadelphia chromosome in a chronic myeloid leukemia patient: A case report

10.1016/j.cancergencyto.2010.01.012Cancer Genetics and Cytogenetics199166-68CGCY