Free-radical copolymerization of biological medium-chain-length poly-3-hydroxyalkanoate with poly-methyl acrylate under ultrasonication

Ishak, Khairul Anwar; Safian, Nur Azmina Mohamed; Kamal, Shafarina Azlinda Ahmad; Velayutham, Thamil Selvi; Annuar, Mohamad Suffian Mohamad

doi:10.1007/s10965-022-03252-7

Cited by 2 publications

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References 25 publications

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“…25 The neat mcl-PHA was copolymerized with poly-methyl acrylate (PMA) via grafting through technique using ultrasonication. 26 To this end, solution mixture of mcl-PHA, methyl acrylate (MA) and hydrogen peroxide (H 2 O 2 ) in acetone was subjected to sonication (30% amplitude, 20 kHz) for 2 min. The ultrasonicator (VCX500, 500 W, 20 kHz, Sonics, USA) is equipped with metal tapered microtip (3 mm diameter) immersed into the mixture solution at about 1-cm depth from the liquid surface.…”

Section: Methodsmentioning

confidence: 99%

Photocatalytic Ag-ZnO − poly-3-hydroxyalkanoate composite film for translucent coating application

Ishak

Ong

Safian

et al. 2023

Journal of Thermoplastic Composite Materials

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Biological elastomer i.e., medium-chain-length poly-3-hydroxyalkanoate (mcl-PHA) and its graft copolymer were investigated for reactive coating application. They were composited with silver-doped zinc oxide (Ag-ZnO) to produce films with photocatalytic activities. The activities were assessed from the photodegradation efficiencies of methylene blue, Rhodamine B and Orange II dyes. The PHA composite films demonstrated sustained photocatalytic activities over repeated usage compared to neat PHA. The presence of Ag also inhibits microbial growth on the film surface. The composite film exhibited negligible toxicity effect when tested against Ceriodaphnia dubia. Potential and advantages of Ag-ZnO−PHA composite film in reactive coating applications are discussed.

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Section: Methodsmentioning

confidence: 99%

Photocatalytic Ag-ZnO − poly-3-hydroxyalkanoate composite film for translucent coating application

Ishak

Ong

Safian

et al. 2023

Journal of Thermoplastic Composite Materials

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Fabrication of SrTiO₃−Tween80 reinforced biological poly-3-hydroxyalkanoate composite film and its proton permeability

Faizal,

Ishak,

Mohamad Annuar

2024

Journal of Thermoplastic Composite Materials

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Flexile composite film of Poly-3-hydroxyalkanoate−Perovskite−Tween 80 (PHA-PV-T80) as a green membrane film was prepared. Pristine medium-chain-length poly-3-hydroxyalkanoate (mcl-PHA), produced through bacterial fermentation, was blended with different concentrations of perovskite (PV) and Tween 80 (T80) ranging from 0.01 to 0.0025 % ( w/v) and 1.5 – 4.5 % ( w/v), respectively, to fabricate the composite films. Ultrasound irradiation was applied to aid homogenous dispersion of blend solution prior to film casting. The composite film exhibited improved physical properties compared to the neat mcl-PHA film, which is more susceptible to ripping upon peeling. Thorough distribution of perovskite, facilitated by T80, were responsible for promoting increased side-chain crystallization, resulting in the formation of extensive rigid regions within the PHA matrix, which significantly improved proton permeability of the composite film. PHA composites showed higher proton flux (>3.5 × 10−4 mol.min−1.cm−2) compared to neat PHA (1.03 × 10−4 mol.min−1.cm−2) and commercial Nafion (1.22 × 10−4 mol.min−1.cm−2). The relationship between physicochemical attributes and proton flux characteristics of the composite films were discussed with regards to their potential application as proton exchange membrane.

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Free-radical copolymerization of biological medium-chain-length poly-3-hydroxyalkanoate with poly-methyl acrylate under ultrasonication

Cited by 2 publications

References 25 publications

Photocatalytic Ag-ZnO − poly-3-hydroxyalkanoate composite film for translucent coating application

Photocatalytic Ag-ZnO − poly-3-hydroxyalkanoate composite film for translucent coating application

Fabrication of SrTiO₃−Tween80 reinforced biological poly-3-hydroxyalkanoate composite film and its proton permeability

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Free-radical copolymerization of biological medium-chain-length poly-3-hydroxyalkanoate with poly-methyl acrylate under ultrasonication

Cited by 2 publications

References 25 publications

Photocatalytic Ag-ZnO − poly-3-hydroxyalkanoate composite film for translucent coating application

Photocatalytic Ag-ZnO − poly-3-hydroxyalkanoate composite film for translucent coating application

Fabrication of SrTiO3−Tween80 reinforced biological poly-3-hydroxyalkanoate composite film and its proton permeability

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Fabrication of SrTiO₃−Tween80 reinforced biological poly-3-hydroxyalkanoate composite film and its proton permeability