Wan Rusmawati Wan Mahamod

Sultan Idris Education University

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Norlaili Abu Bakar

Sultan Idris Education University

Noorshida Mohd Ali

Sultan Idris Education University

Norhayati Hashim

Sultan Idris Education University

Illyas Md Isa

Sultan Idris Education University

Norlaili Abu Bakar

Siti Aisyah Shamsudin

National University of Malaysia

Norhayati Hashim

Mohd Zobir Hussein

Universiti Putra Malaysia

Zuhailimuna Muda

Sultan Idris Education University

Suriani Abu Bakar

Sultan Idris Education University

Cooperative Institutions

Sultan Idris Education University

National University of Malaysia

Universiti Putra Malaysia

Universiti Teknologi MARA

Indonesia University of Education

Universiti Sains Malaysia

Centre de Nanosciences et de Nanotechnologies

Kyoto University

Universiti Malaysia Terengganu

University of Technology Malaysia

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PEPERIKSAAN AKHIR PROGRAM DIPLOMA SEMESTER 2 SESI 2015/2016 -Introduction To Analytical Chemistry (SKA1013)

Wan Rusmawati Wan Mahamod Wan Rusmawati

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Synthesis and Application of Zinc Layered Hydroxide: A Short Review

Indonesian Journal of Chemistry (2023)

Norhayati Hahsim Zuhailimuna Muda Illyas Md Isa Norlaili Abu Bakar Wan Rusmawati Wan Mahamod

Zinc Layered hydroxide (ZLH) is a layered material easily synthesized with a structure identical to brucite-like material. Due to the exchangeable anions in the interlayer compensating for the positive charge of a brucite-type layer, ZLH provides a wide application in many fields. This review focuses on the properties and method of synthesis of ZLH by giving an overview of intercalated guest anion in the interlayer of ZLH. The further discussion involved the application of intercalated guest anion in zinc layered hydroxide layer and its properties as a sensitizer, controlled release biomedical, and agriculture to provide the scientific community for research and development by giving current findings. This brief review also presents the success of anion intercalation for controlled release along with the kinetic model involved, which increases the bioavailability and effectiveness of the nanocomposite on its target. It shows the development of research on ZLH nanocomposites toward the sustainability of human life and the environment. This study implies that it is a source of knowledge for researchers about zinc-layered hydroxide materials involving synthesis methods and their application to produce more beneficial nanomaterials.

Brucite

Zinc hydroxide

Nanomaterials

Metal hydroxide

Layered double hydroxides

10.22146/ijc.82281

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Citations (1)

Effect of Fish Scale Hydrolysed Collagen on Stability of Water-in-Virgin Coconut Oil Emulsion for Potential Topical Application

Journal of Engineering and Applied Sciences (2019)

HasnorIzzati Che Razali Ismail Zainol Wan Rusmawati Wan Mahamod Haniza Hanim Mat Zain Norlaili Abu Bakar

Coconut oil

Edible oil

10.36478/jeasci.2019.7647.7655

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Citations (1)

Recent Advances and Future Prospects of Molecular Imprinting Polymers as a Recognition Sensing System for Food Analysis: A Review

Indonesian Journal of Chemistry (2022)

Almajed Asaad Abdullah Sfoog Norlaili Abu Bakar Nurulsaidah Abdul Rahim Wan Rusmawati Wan Mahamod Norhayati Hashim

Molecular imprinting polymers (MIPs) have been widely used to produce stable polymeric materials due to their highly selective binding sites to determine the analyte (target molecule) in food products. MIPs begin with a complex compound between the template molecule and the functional monomers that can be polymerized when there is a closely crossed link. MIPs left specific cavities after the removal of templates during washing, which complements the size and shape of the templates. The use of MIPs has contributed to novel advances in materials science, polymer science, natural science, and other multi-disciplinary systems. Optical chemical sensor is an exciting field in MIPs today due to comprehend the unique affirmation limit of associated polymers giving stable polymers with high molecular recognition capabilities. MIPs display a wide extent of relevance, incredible flexibility, security, and high selectivity; their internal affirmation districts can be explicitly gotten together with design molecules to achieve specific affirmation. This review covers the various achievements of sensors used in laboratory analyses. The advancement in the development of MIPs is evaluated with an accentuation on the preparation principle, the discovery process, the molecular recognition mechanism and future perspectives and challenges for MIPs in building an optical chemical sensor.

Molecularly imprinted polymer

Molecular Recognition

Template

Molecular imprinting

Natural polymers

10.22146/ijc.73879

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Rheological behaviour of VCO based lamellar liquid crystal of Tween60:Brij30/H2O/VCO

AIP conference proceedings (2022)

Nor Ain Mohamed Arifin Wan Rusmawati Wan Mahamod Norlaili Abu Bakar Norhayati Hashim Siti Aisyah Shamsudin

10.1063/5.0079341

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Synthesis and characterization of carbamate insecticideintercalated zinc layered hydroxide modified with sodium dodecyl sulphate

IOP Conference Series Materials Science and Engineering (2018)

Zuhailimuna Muda Norhayati Hashim Illyas Md Isa Noorshida Mohd Ali Suriani Abu Bakar

A novel organic-inorganic nanocomposite based on carbamate insecticide-zinc layered hydroxide modified with sodium dodecyl sulphate nanocomposite (ZLH-SDS-PRO) was synthesized through ion exchange method of propoxur with commercially available zinc nitrate at various concentrations. The intercalation of propoxur into the interlayer of zinc layered hydroxide modified sodium dodecyl sulphate (ZLH-SDS) was confirmed by PXRD analysis with the basal spacing of the pure phase nanocomposite at 33.1 Å. The propoxur anions suggested to be arranged in a bilayer form between the galleries of zinc layered hydroxide. The intercalation also supported by Fourier transforms infrared spectra (FTIR) that showing the resemblance spectra between the host and the resulting nanocomposite. The elemental analysis estimates the loading of propoxur anion in the nanocomposite to be 88.17 %. The surface area analysis revealed mesoporous-type material properties for both the host and resulting nanocomposite. The thermal study shows a significant improved thermal stability of the propoxur anion compared to its pure form. The effect of intercalation of propoxur on the morphology of the host, ZLH-SDS crystals was investigated by field emission scanning electron microscopy (FESEM).

Sodium hydroxide

Thermogravimetric analysis

Zinc hydroxide

Thermal Stability

Sodium dodecyl sulfate

10.1088/1757-899x/440/1/012003

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The Effect of pH on the Arrangement of 5CB Based Liquid Crystal Containing BDMT-Mercury Complex Using Polarized Optical Microscopy

Chemistry Letters (2018)

Aisyah Mohamad Sharif Wan Rusmawati Wan Mahamod Norlaili Abu Bakar Nurulsaidah Abdul Rahim Suzaliza Mustafar

The pH effect on arrangement of a liquid crystal (LC) system was studied in short and rigid molecule (BDMT-Hg). 1,4-benzenedimethanethiol (BDMT) doped 4-cyano-4′-pentylbiphenyl (5CB) was spontaneou...

Mercury

Polarized light microscopy

10.1246/cl.171169

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Emulsion Properties of Mixed Tween20-Span20 in Non-Aqueous System

Wan Rusmawati Wan Mahamod Dzulkefly Kuang Abdulah Wen Huei Lim Mohd Hamdan Suhaimi

Emulsi minyak-dalam-gliserol (O/G) telah disediakan dari campuran surfaktan Tween20-Span20 dengan nisbah berat yang berbeza. Emulsi O/G didapati terbentuk bila kandungan minyak kurang dari 50 wt% dengan kepekatan campuran Tween20-Span20 3 wt%. Sifat-sifat flzikal emulsi ditentukan dengan mengguna mikroskop, penganalisis partikal dan pengukuran reologi. Kajian perkaitan antara nilai HLB campuran Tween20-Span20 dengan kestabilan emulsi juga dilakukan. ABSTRACf Oil-in-glycerol (O/G) emulsion was prepared in the presence of different weight ratios of mixed Tween20-Span20 surfactants. O/G emulsion was observed to form below 50 wt% of oil content at 3 wt% of mixed Tween20 Span20 surfactants. Physical properties of the emulsion were determined by using a microscope, particle counting and rheological measurement. An attempt to correlate HLB values of mixed Tween20-Span20 with emulsion stability was also carried out.

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A Review on the Malaysian Aquilaria species in Karas Plantation and Agarwood Production

International Journal of Academic Research in Business and Social Sciences (2017)

Mohd Fauzi Elias Husni Ibrahim Wan Rusmawati Wan Mahamod

Malaysia is one of the countries which is rich in its flora and fauna bio-diversity. Malaysian forest products have been exploited since ancient times for its high economic values. One of these high economic value products is agarwood. Thymelaeacea is one medium-size family tree where it is estimated to consist of 50 genera and 900 species of which many can be found in Africa, Australia and Asia. Most species of Aquilaria in Thymelaeaceae family produced agarwood or 'gaharu'. Aquilaria malaccensis is a species of the highest recorded number of planting by karas tree farmers and known as the primary producer of agarwood in Malaysia. Agarwood is non timber forest product it is one of the precious wood on earth and prized for its rich and wonderful fragrance. Agarwood is formed due to the phathological process as respond to fungal infection or chemically stimulated. This paper seek to understand in general the type of karas trees species most favoured by karas farmers and to know what other similar species that are capable of producing resin for gaharu products. This research is to review the natural process of producing gaharu and its importance to the diverse related industries. This research also found the high commercial value and its potential for further development

Agarwood

Felling

Forest gardening

10.6007/ijarbss/v7-i4/2911

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Citations (20)

Determination of Malaysian Herbs and Spices as Biopreservative Agents in Food Products

American Journal of Plant Sciences (2015)

Saripah Salbiah Syed Abdul Azziz Munirah Abdul Talip Chee Fah Wong Hasimah Alimon Norlaili Abu Bakar

Preservatives are usually added to food products to ensure longer shelf life and prevent decomposition process and microbial growth. However, synthetic food preservatives can also give negative side effect to health and are harmful to human and animal physiology. Based on the potential of herbs and spices as antimicrobial agent, the purpose of this study is to identify antibacterial activity from extracts of some local herbs and spices: Phaeomeria speciosa (P. speciosa), Aquilaria subintegra (A. subintegra), Polygonum minus (P. minus), Syzygium aromaticum (S. aromaticum), Cinnamomum verum (C. verum) and Piper nigrum (P. nigrum) against food bacteria using disc diffusion method. Results revealed that dichloromethane extracts of C. verum, hexane extracts of S. aromaticum and P. minus showed the most active antibacterial against tested bacteria. The Minimal Inhibitory Concentrations (MIC) ranged from 25 to 75 mg/ml for dichloromethane extract of C. verum, hexane extract of S. aromaticum and P. minus. Therefore further research should be pursued to identify the chemical structure of antibacterial agents from the active extracts as an alternative source of natural preservatives.

Syzygium

Cinnamomum

Food Preservatives

Chinese herbs

Polygonum

10.4236/ajps.2015.65077

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Citations (2)