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Your search keyword '"Marwah Rayung"' showing total 4 results
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4 results on '"Marwah Rayung"'

1. Dielectric and ionic transport properties of bio-based polyurethane acrylate solid polymer electrolyte for application in electrochemical devices

Author

Tuan Syarifah Rossyidah Tuan Naiwi, Min Min Aung, Marwah Rayung, Azizan Ahmad, Kai Ling Chai, Mark Lee Wun Fui, Emma Ziezie Mohd Tarmizi, and Nor Azah Abdul Aziz

Subjects
Biopolymer electrolyte, Jatropha oil, Lithium perchlorate, Polyurethane acrylate, Conductivity, UV radiation, Polymers and polymer manufacture, TP1080-1185
Abstract

Solid polymer electrolyte has been extensively studied as an alternative to liquid electrolyte that is often affected by the leakage, deformation and limited range of operating temperature issues. The present study was conducted in an attempt to synthesize polyurethane acrylate (PUA) as a host polymer to evaluate polymer performance supplemented with Li salt as polymer electrolytes. PUA was prepared by the reaction of jatropha oil polyol with toluene 2,4-diisocyanate and hydroxylethylmethylacrylate. Lithium perchlorate (LiClO4) salt with different percentage of weight in the range of 5 wt. % to 25 wt. % was added to PUA to produce the PUA electrolyte. The mixtures were cured under UV radiation to obtain thin polymeric films with good thermal stability and ionic conductivity. PUA with 25 wt. % lithium salt has the highest conductivity of 6.40 × 10−5 S cm−1 at room temperature. The finding was supported by Fourier transform infrared (FTIR). Electrode polarization occurrence was interpreted by the complex dielectric constant (Ɛr), dielectric loss (Ɛi), real electrical modulus (Mr), imaginary electrical modulus (Mi) and tan σ. The effect of lithium salt addition was investigated by differential scanning calorimeter (DSC), thermogravimetric analysis (TGA), X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses. Additionally, the ionic transport properties, transference number measurement and electrochemical stability were presented.

Published
2022
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2. A Review on Natural Fiber Reinforced Polymer Composites (NFRPC) for Sustainable Industrial Applications

Author

Siti Hasnah Kamarudin, Mohd Salahuddin Mohd Basri, Marwah Rayung, Falah Abu, So’bah Ahmad, Mohd Nurazzi Norizan, Syaiful Osman, Norshahida Sarifuddin, Mohd Shaiful Zaidi Mat Desa, Ummi Hani Abdullah, Intan Syafinaz Mohamed Amin Tawakkal, and Luqman Chuah Abdullah

Subjects
Polymers and Plastics, General Chemistry
Abstract

The depletion of petroleum-based resources and the adverse environmental problems, such as pollution, have stimulated considerable interest in the development of environmentally sustainable materials, which are composed of natural fiber–reinforced polymer composites. These materials could be tailored for a broad range of sustainable industrial applications with new surface functionalities. However, there are several challenges and drawbacks, such as composites processing production and fiber/matrix adhesion, that need to be addressed and overcome. This review could provide an overview of the technological challenges, processing techniques, characterization, properties, and potential applications of NFRPC for sustainable industrial applications. Interestingly, a roadmap for NFRPC to move into Industry 4.0 was highlighted in this review.

Published
2022

4. Polyurethanes: Preparation, Properties, and Applications Volume 3: Emerging Applications

Author

Ram K. Gupta, Anupam Ghosh, Sayak Roy Chowdhury, Rohan Dutta, Rosebin Babu, Carlos Rumbo, Nandita Dasgupta, Palash Mukherjee, Narayan Chandra Das, Shivendu Ranjan, Mohd Sukor Su’ait, Marwah Rayung, Salmiah Ibrahim, Azizan Ahmad, Mohammad Nourany, Majid Mollavali, Narges Mohammad Mehdipour, Mukesh Sharma, Pranjal P. Das, Satish Kumar, Mihir K. Purkait, Diane Isabel Selvido, Hans Erling Skallevold, Goma Kathayat, Janak Sapkota, Sasiwimol Sanohkan, Dinesh Rokaya, Mershen Govender, Poornima Ramburrun, Yahya E. Choonara, Nandini A. Pattanashetti, Geoffrey R. Mitchell, Mahadevappa Y. Kariduraganavar, Adrija Ghosh, Jonathan Tersur Orasugh, Suprakas Sinha Ray, Dipankar Chattopadhayay, Sameer Nadaf, Pranav Savekar, Durgacharan Bhagwat, Shailendra Gurav, Vratko Himič, Gianfranco K. I. Ligarotti, Mario Ganau, Ram K. Gupta, Anupam Ghosh, Sayak Roy Chowdhury, Rohan Dutta, Rosebin Babu, Carlos Rumbo, Nandita Dasgupta, Palash Mukherjee, Narayan Chandra Das, Shivendu Ranjan, Mohd Sukor Su’ait, Marwah Rayung, Salmiah Ibrahim, Azizan Ahmad, Mohammad Nourany, Majid Mollavali, Narges Mohammad Mehdipour, Mukesh Sharma, Pranjal P. Das, Satish Kumar, Mihir K. Purkait, Diane Isabel Selvido, Hans Erling Skallevold, Goma Kathayat, Janak Sapkota, Sasiwimol Sanohkan, Dinesh Rokaya, Mershen Govender, Poornima Ramburrun, Yahya E. Choonara, Nandini A. Pattanashetti, Geoffrey R. Mitchell, Mahadevappa Y. Kariduraganavar, Adrija Ghosh, Jonathan Tersur Orasugh, Suprakas Sinha Ray, Dipankar Chattopadhayay, Sameer Nadaf, Pranav Savekar, Durgacharan Bhagwat, Shailendra Gurav, Vratko Himič, Gianfranco K. I. Ligarotti, and Mario Ganau

Published
2023

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