Author
Sakinah Mohd Alauddin
Other affiliations: University of Malaya
Bio: Sakinah Mohd Alauddin is an academic researcher from Universiti Teknologi MARA. The author has contributed to research in topics: Biocomposite & Polylactic acid. The author has an hindex of 6, co-authored 16 publications receiving 77 citations. Previous affiliations of Sakinah Mohd Alauddin include University of Malaya.
Papers
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TL;DR: In this paper, AMF and NFKA would like to thank the Royal Academy of Engineering for the award of the Newton Research Collaboration Programme grant NRCP1516/4/61.
22 citations
19 citations
TL;DR: The light-responsiveness of the polymers, via reversible trans-to-cis photoisomerization of azobenzene groups, and the local activation of conductivity at relatively low temperatures, opens the possibility to prepare polymer electrolytes for energy conversion and storage, whose conductivity could be controlled and optimised by external stimuli, including light irradiation.
Abstract: In the search for novel smart multifunctional liquid crystalline materials, we report the synthesis, thermal and structural characterisation, and the conductivity, of a set of new block and statistical copolymers, containing light-responsive mesogenic groups (MeOAzB), polar sulfonic acids (AMPS), and methyl(methacrylate) groups (MMA). By using a cascade of reversible addition-fragmentation chain polymerisations, RAFT, we have tailored different side-chain polymeric structures by controlling monomer composition (MeOAzB/AMPS/MMA) and configuration. We have yielded simultaneous liquid crystalline behaviour and appreciable conductivity in polymers with low concentrations of polar acid groups, by the formation of smectic phases in narrow aggregates. The light-responsiveness of the polymers, via reversible trans-to-cis photoisomerization of azobenzene groups, and the local activation of conductivity at relatively low temperatures, opens the possibility to prepare polymer electrolytes for energy conversion and storage, whose conductivity could be controlled and optimised by external stimuli, including light irradiation.
12 citations
11 citations
TL;DR: In this article, the UMRG grant RP038B-17AFR was used to support the University Malaya under the Global Challenge Research Fund Internal Pump Priming Fund Round 2.
Abstract: This work was supported by the University Malaya under the UMRG grant RP038B-17AFR. NFKA and AMF would like to thank the Royal Academy of Engineering, U.K., and Academy of Science, Malaysia, for the grant NRCP1516/4/61, from the Newton Research Collaboration Programme, and the University of Aberdeen, for the award of the grant SF10192, corresponding to the Global Challenge Research Fund Internal Pump Priming Fund Round 2. AMF would like to acknowledge the Carnegie Trust for the Universities of Scotland for the award of one Scottish Research Incentive Grant (RIG008586).
11 citations
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18 May 2006
TL;DR: In this paper, a liquid crystal is defined as a mixture of a liquid and a columnar phase, and the following properties of the liquid crystal: 1 1.1 What is a Liquid Crystal? 2 1.2 Cholesterics.
Abstract: 1 What is a liquid crystal 2 1.1 Nematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Cholesterics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.3 Smectics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.4 Columnar phases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.5 Lyotropic liquid crystals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
325 citations
TL;DR: Key concepts in optimization-based conceptual design, namely superstructure representations, multilevel models, optimization methods, and modeling environments, are reviewed and some of the major challenges in the theory and practice in this area are discussed.
Abstract: This article first reviews recent developments in process synthesis and discusses some of the major challenges in the theory and practice in this area. Next, the article reviews key concepts in optimization-based conceptual design, namely superstructure representations, multilevel models, optimization methods, and modeling environments. A brief review of the synthesis of major subsystems and flowsheets is presented. Finally, the article closes with a critical assessment and future research challenges for the process synthesis area.
133 citations
TL;DR: The results showed that the highest Young's modulus improvement was obtained with 15% of bleached ANS particles, while the highest tensile strength and strain at yield were obtained with a silane treatment, indicating better resistance of the bio-composites when ANS surface treatment was applied.
88 citations
TL;DR: Biodegradable composites from poly(lactic acid) (PLA) and oil palm empty fruit bunch (OPEFB) fiber were prepared by melt blending method and bleaching treatment improved the physical appearance and mechanical properties.
Abstract: In this work, biodegradable composites from poly(lactic acid) (PLA) and oil palm empty fruit bunch (OPEFB) fiber were prepared by melt blending method. Prior to mixing, the fiber was modified through bleaching treatment using hydrogen peroxide. Bleached fiber composite showed an improvement in mechanical properties as compared to untreated fiber composite due to the enhanced fiber/matrix interfacial adhesion. Interestingly, fiber bleaching treatment also improved the physical appearance of the composite. The study was extended by blending the composites with commercially available masterbatch colorant.
77 citations
TL;DR: In this article, a novel continuous flow fabrication of nanoscopic ATH with consistent product quality was reported, where the synergism between the ATH heat sink and intumescent action (provoked with a phosphorous-based FR agent known as AP750) was employed to develop self-extinguishing multi-component epoxy nanocomposite.
76 citations