Mokhtar Mat Salleh
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Preferred name
Mokhtar Mat Salleh
Official Name
Mokhtar , Mat Salleh
Alternative Name
Mat Salleh, M.
Mat Salleh, Mokhtar
Main Affiliation
Scopus Author ID
57193352402
Researcher ID
FYU-8505-2022

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  • Publication
    Superhydrophobic and Water Repellent of All-Cellulose Composite (ACC) treated with HDTMS/SiOâ‚‚
    ( 2024-04-19)
    Nor S.S.M.
    ;
    Mokhtar Mat Salleh
    All-cellulose composite (ACC) consists of cellulose for both reinforced and matrix phases. ACC has good mechanical, thermal and optical properties due to the compatibility of fiber and matrix phases. However, ACC can change its physical structure and lose strength in the presence of moisture due to abundant hydroxyl group in the cellulose molecules that make ACC hydrophilic. In this present study, the ACC was fabricated by using solvent infusion processing (SIP) from rayon textile. The NaOH/urea was used as the solvent to partially dissolve the cellulose. Then, ACC was treated with hexadecyltrimethoxysilane (HDTMS)/silica (SiO2) to produce superhydrophobic surface of ACC. The FTIR spectra of HDTMS/SiO2 treated ACC showed the new peak appears at 2841 cm-1 and 800 cm-1 that attributed to -CH2 stretching and Si-O-CH3 vibrations, respectively. The surface morphology of HDTMS/SiO2 treated ACC was rougher compared to untreated ACC. Furthermore, the HDTMS/SiO2 treated ACC exhibited superhydrophobic with water contact angle beyond 157°.
      1
  • Publication
    Surface modification of bio-based composites via silane treatment: a short review
    ( 2023-01-01)
    Md Nor S.S.
    ;
    Abdul Patah M.F.
    ;
    Mokhtar Mat Salleh
    Research in bio-based composites is rapidly rising in terms of fundamental experiments and industry applications. Natural fibres are one of the common bio-based materials used in composites. Natural fibres have many advantages, including low cost, biodegradable, good thermal conductivity, and may also be used as an alternative to synthetic polymer composites. However, the hydrophilic characteristic of natural fibres can lead to poor interfacial adhesion between natural fibres reinforced and matrix phases, which can affect the properties of bio-based composites. To overcome this problem, the surface modification of natural fibres is required to improve the hydrophobic properties of the composite. A few studies revealed that silane improved the hydrophobicity, tensile strength and thermal stability of bio-based composites. The highest water contact angle of the treated bio-based composite was reported at 135°. Meanwhile, the tensile strength of silane-treated bio-based composite can increase up to 40%. The onset decomposition temperature of silanes treated with bio-based composite is 20 (Formula presented.) higher compared to untreated bio-based composite. This article provides an insightful review of the surface treatment of bio-based composites via silane treatment on mechanical properties, thermal properties, water absorption, and water contact angle.
      3  15