Designing a single superabsorbent for separating oil from both layered as well as micron/submicron size emulsified oil/water mixtures by gamma radiation assisted grafting

Chowdhury, Subhendu Ray; Jha, Atanu; Manna, Uttam; Sarma, K.S.S.

doi:10.1039/c6ra01162d

Cited by 19 publications

(20 citation statements)

References 39 publications

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“…Immediate spreading of water droplet on the PFF surface implies it’s hydrophilicity (Figure 4(a)) as the contact angle is ∼25° (Figure 4(c)). 16 From Figure 4(b) it is evident that due to covalent attachment of hydrophobic DMA molecule to the hydrophilic flax fibre, almost spherical water droplet is observed which attributes to the alteration of the MFF surface wettability, i.e. hydrophilic to superhydrophobic.…”

Section: Resultsmentioning

confidence: 98%

Radiation assisted development of linear low density polyethylene/flax fibre composites by designing interface

Jha

Thite²,

Bhardwaj

et al. 2022

Journal of Composite Materials

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Flax fibre reinforced polyolefin composite is a great interest of today’s scientists. But the preparation of such composites with desired properties is a great challenge due to the dissimilar surface wettability (surface energy) of polyolefin and flax fibre. In this work, we have developed a linear low density polyethylene (LLDPE)/flax fibre based composite successfully. First, flax fibre is subjected to gamma radiation-assisted surface modification through covalent attachment of long chain hydrocarbon. Therefore, the surface wettability of flax fibre turns closer to that of LLDPE, and consequently a LLDPE/flax fibre composite with a strong interface is formed easily. Due to the designing of strong interface and consequently higher load transferring capability, properties are improved considerably. Young’s modulus and tensile strength values of composites with surface modified flax fibre become considerably higher compared to pure LLDPE and LLDPE/pure flax fibre composites. Strong reinforcement is reflected in the dynamic mechanical properties also. The highly improved dispersion and strong interfacial strength of LLDPE/modified flax fibre are observed in SEM (scanning electron microscopy). Thermal degradation temperatures of LLDPE and flax fibre are also improved in the composites.

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Section: Resultsmentioning

confidence: 98%

Radiation assisted development of linear low density polyethylene/flax fibre composites by designing interface

Jha

Thite²,

Bhardwaj

et al. 2022

Journal of Composite Materials

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“…[1][2][3] A variety of conventional methods such as gravity or density separation, burning, skimming, centrifugation, coagulation, adsorption, etc., have been invented to separate oil-water. [4][5][6][7][8][9][10][11] However, these methods are not completely satisfactory. For instance, the coagulation and gravity separation techniques are low efficiency and multistage ( Fig.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic paper with mussel-inspired polydimethylsiloxane–silica nanoparticle coatings for effective oil/water separation

Ruan

Xu²,

Chen

et al. 2020

RSC Adv.

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“…Since electromagnetic gamma rays stimulate the surface properties of a polymer and can cause chain scission/rupture or crosslinking, many nanocomposites are gamma irradiated for modifying their surface properties [ 26 , 27 , 28 , 29 ]. In addition to achieving high mechanical strength, such polymer composite surfaces can behave superhydrophobic/superoleophilic, therefore repelling water and triggering oil/water separation [ 30 ]. Because superhydrophobicity is an essential concept in separating oil from water, numerous studies to mimic the lotus leaf, Nelumbo nucifera [ 31 ], have been done by combining surface chemistry and surface roughness of various materials.…”

Section: Introductionmentioning

confidence: 99%

Designing Carbon Nanotube-Based Oil Absorbing Membranes from Gamma Irradiated and Electrospun Polystyrene Nanocomposites

et al. 2019

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Carbon-based materials are outstanding candidates for oil spill clean-ups due to their superhydrophobicity, high surface area, chemical inertness, low density, recyclability, and selectivity. The current work deals with the fabrication of membrane oil absorbents based on carbon nanotube (CNT) reinforced polystyrene (PS) nanocomposites by electrospinning technique. The spun membranes are also irradiated with the gamma radiation to induce enough crosslinks and thus good polymer-filler interactions. The structural, morphological, and surface properties in addition to the oil/water separation efficiency were investigated by varying the concentration of CNT and the dose of γ-irradiation. Fabricated nanofiber membranes show superior hydrophobicity and selective oil absorption at 0.5 wt.% of CNT concentration. The best mechanical properties are also obtained at this particular concentration and at 15 KGy optimum γ-irradiation dosage. The gamma irradiated PS/0.5 wt.% CNT membrane also exhibits good antibacterial effects against the bacteria, Escherichia coli, in the form of bacterial inhibition rings around the membranes. The present study thus shows the environmental applicability of the fabricated PS/CNT membranes in treating oil-contaminated water.

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Designing a single superabsorbent for separating oil from both layered as well as micron/submicron size emulsified oil/water mixtures by gamma radiation assisted grafting

Abstract: A single superabsorbent for separating both layered and emulsified oil/water mixtures designed by gamma radiation assisted grafting in aqueous ethanol solution.

Cited by 19 publications

References 39 publications

Radiation assisted development of linear low density polyethylene/flax fibre composites by designing interface

Radiation assisted development of linear low density polyethylene/flax fibre composites by designing interface

Superhydrophobic paper with mussel-inspired polydimethylsiloxane–silica nanoparticle coatings for effective oil/water separation

Designing Carbon Nanotube-Based Oil Absorbing Membranes from Gamma Irradiated and Electrospun Polystyrene Nanocomposites

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