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7 results on '"Abdul Rahman, Wan Aizan Wan"'

2. PALF/Skin Extracted Pineapple Juice: New Potential as Pulping and Bleaching Agent in Papermaking and Its Effect on Mechanical and Physical Properties.

Author

Jamal, Siti Noorashikin, Abdul Rahman, Wan Aizan Wan, Majid, Noor Aishatun, and Syed Ismail, Sharifah Nafisah

Subjects
*PINEAPPLE juice, *EXTRACTION (Chemistry), *PULPING, *BLEACHING (Chemistry), *PAPERMAKING
Abstract

Pineapple has been known for a number of beneficial biological activities such as anti-oxidative and antibrowning. Some of these bioactivities are contributed by enzymatic complex in pineapple and it can be found mainly in the skin extracted pineapple juice. The purpose of this study is to determine the effect of the pineapple juice as a pulping and bleaching agent in the process of papermaking. During pulping of pineapple leaf fibre, the mixture of pineapple juice/water was added together with a constant amount of 3% Sodium Hydroxide (NaOH) at various concentration of pineapple juice (0%, 20%, 40%, 60% and 80%). Pineapple leaf fibre (PALF) was soaked several times with pineapple juice and NaOH during pulping and bleaching process in order to get the optimum results of the paper sheet obtained. The mechanical and physical properties of paper sheet were studied by measuring its tensile strength, tear resistance and water absorption. Comparatively, paper sheet produced from NaOH pulping shows better mechanical and physical properties than the mixture pulping of NaOH and pineapple juice. Additionally, pulping with higher concentration of pineapple juice tends to give long fibre rather than short fibre. Overall, the results of this study can be used as an alternative way in the production of paper and it also opens a door to utilize wisely the waste residue of pineapple in other sectors. [ABSTRACT FROM AUTHOR]

Published
2018
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3. Preparation and Characterization of Kenaf Papers Reinforced with Tapioca Starch: Physicomechanical and Morphological Properties.

Author

Low, Jiun Hor, Ghanbari, Taravat, Abdul Rahman, Wan Aizan Wan, and Majid, Rohah A.

Subjects
TAPIOCA, TENSILE strength, COUPLING agents (Chemistry)
Abstract

Copyright of Journal of Natural Fibers is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2018
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4. The Influence of Crosslink Chemicals on the Mechanical Strength and Water Absorption of Rice Straw-Based Green Composites.

Author

Low, Jiun Hor, Andenan, Nurnadia, and Abdul Rahman, Wan Aizan Wan

Subjects
CROSSLINKED polymers, MECHANICAL strength of condensed matter, RICE straw
Abstract

Copyright of Journal of Natural Fibers is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2018
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6. Preparation and Characterization of Cassava Leaves/Cassava Starch Acetate Biocomposite Sheets.

Author

Ahmad Sharif, Noor Fadzliana, Abd Razak, Saiful Izwan, Abdul Rahman, Wan Aizan Wan, Mat Nayan, Nadirul Hasraf, Rahmat, Abdul Razak, and Yahya, Mohd Yazid

Subjects
CASSAVA starch, PACKAGING materials, COMPOSITE materials, MOISTURE, WETTING, THERMAL stability
Abstract

Biocomposite packaging sheets made of cassava leaves (CL) and cassava starch acetate (CSA) were successfully prepared in this study, and using the surface impregnation method, the sheets were able to obtain desirable properties. The CL sheets were impregnated with CSA at various concentrations to improve the sheets' performance. This newly developed packaging material exhibited low moisture uptake and had a viable tear index value when the CSA impregnation level was 6%. Moreover, the sheets' properties were comparable to that of available paper or plastic sheets, having low moisture uptake, good wetting time and tear strength, smooth sheet formation, and enhanced thermal stability. Using agro-based materials from cassava plants for packaging materials could reduce the dependency on paper- and plastic-based packaging. Suitable utilization of this material includes as bag, carton and wrap. [ABSTRACT FROM AUTHOR]

Published
2015
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7. Effect of crude palm oil as plasticiser on the mechanical and morphology properties of low density polyethylene blown film

Author

Jusoh, Emiliana Rose, Ismail, Mohd Halim Shah, Abdullah, Luqman Chuah, Yunus, Robiah, and Abdul Rahman, Wan Aizan Wan

Abstract

This paper presents a study on the mechanical and morphology properties of low density polyethylene (LDPE) blown film modified with crude palm oil (CPO). The effect of the crude palm oil as plasticiser on LDPE matrix has been studied. The LDPE were compounded with 1%, 3% and 5% of crude palm oil in a co-rotating twin screw extruder and pelletised. The blends were processed using blow thin film machine. The results on tensile properties were showed the gradual enhanced the elongation at break about 79% to 90% in machine direction (MD) and transverse direction (TD) and gradually decreased the tensile strength about 9%. The rupture properties of LDPE modified with CPO showed the decrement pattern due to the plastisticisation effect. The fracture mechanism of modified LDPE was also investigated from scanning electron microscope micrographs which clearly indicated the orientation strengthening consistently with the result in mechanical properties. From Fourier transmission infra-red (FTIR) spectras, the presence of CPO showed the addition peak in 1,745 to 1,747 cm –1 region indicated the physical interaction between molecular of polyolefins and CPO. These observations have important implication as an alternative environmental friendly plasticiser based from renewable resources for polymeric materials.

Published
2013
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