Nor Azwin Ahad
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Preferred name
Nor Azwin Ahad
Official Name
Nor Azwin, Ahad
Alternative Name
Ahad, Nor Azwin
Ahad, N. A.
Main Affiliation
Scopus Author ID
55490613200
Researcher ID
CAX-6318-2022

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Absorption ability and degradable of thin film from Orange peel waste

2024-12 , Nor Azwin Ahad , Nur Afiqah Rosli

Bioplastics are plastic derived from natural resources and they are bio-degradable entirely or partially. Fruit waste is supposed to be an undesirable matter and will be used as compost. The present work aimed to produce a thin film from fruit material, in converting the fruit-derived waste into useful material. The thin film was developed by film casting method using waste fiber from orange peel, glycerol, and corn starch. The thin film was characterized by water, oil absorption, and biodegradable properties. The fact, natural fibers that originate from the surface of the fruit are hydrophilic rather than oleophilic, so the thin film tends to absorb more water than cooking oil over 28 days of observation. The biodegradation rate of orange peel film is quickest for films with 50 wt.% of orange peel powder and slowest for films with 0% of orange peel powder. We concluded that these materials can be used for membrane and packaging applications. Therefore, this work aims to provide a promising bioplastic that will help the environment and be an alternative material to modern society.

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The changes on morphological and absorption ability of treated corn stalk fiber

2020 , M H H Mohamad Rosdi , Nor Azwin Ahad

Natural fiber like corn stalk fiber nowadays can be used to replace synthetic fiber. However, their natural properties may influence their performance which making hem limited to use. In this research study, variety types of chemical treatment which economical technique was used to modified the physical and chemical properties of corn stalk fiber. After the treatment process, the surface morphology and water absorption ability of the fiber was examined. There was an improvement on surface morphological by making them clean and rough compared to untreated corn stalk fiber. The hydrophobicity of corn stalk fiber also increased after treatment. As we can see, H2SO4-treated fiber has lowest water absorption ability compared to others. By removing the unnecessarily element on the fiber which comparable with synthetic fiber may increase their potential to become first choice as reinforcement materials in composite industries later.

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The effect of chemical treatments on tensile strength and absorption ability of epoxy/natural fibers composites

2020 , Nor Azwin Ahad , M H H Mohamad Rosdi , Noorulnajwa Diyana Yaacob , N H N Che Fauzi , Sabri Zakaria

Natural cellulose from agricultural waste, fruit skin, stalks, and so on is considered as recyclable and may have some potential as oil and water absorbent. Besides it is readily available and environmentally friendly it also inexpensive because they are waste, non-toxic and biodegradable. However, the natural fibres are hydrophilic in nature, so it tends to absorb water. Chemical treatments can usually overcome this problem. Usually, acid and alkali treatments are very popular among researchers. In this study, we focused on seeing the differences in natural treatment on acidic and alkaline using citric acid (vinegar) and sodium bicarbonate (soda) of certain three types of selected fibres. The 24 hrs treatments were studied on coconut coir, banana stem fiber and sugarcane bagasse. The tensile strength has been investigated and compared. All fibers were observed highest tensile strength after treated with alkali compared to acid. Treatment with alkali is more suitable for natural fiber in order to clean the fiber surface, thus help to get better fiber-matrix interaction. These are the reason of highest in tensile strength. Overall, the absorption of oil and seawater depends on the type of fibre itself. All treated fibers tend to absorb more seawater and alkaline treated fibers absorbed more cooking oil. Treated coconut coir have tendency to absorb both medium than other fibers. The type of treatments, will give an effect on the fibres’ surface, remove the impurities and reduce the hydrophilic properties, so that provide decreasing or increasing of cooking oil and seawater uptake.

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