In situ synthesized hydro-lipophilic nano and micro fibrous bacterial cellulose: polystyrene composites for tissue scaffolds

Anju, Padinjareveetil; Khandelwal, Mudrika; Subahan, Mabu P.; Kalle, Arunasree M.; Mathaparthi, Srinadh

doi:10.1007/s10853-020-04344-9

Cited by 7 publications

(8 citation statements)

References 24 publications

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“…The aromatic CC stretching is observed at 1433 cm −1 and CH bending is noticed at 692 cm –1 46,50 . For PS/BC composite, a combination of both BC and PS characteristic peaks are observed, which confirms the presence of BC and PS fibers in the composite 43 . The presence of absorption peaks at 3270 cm −1 , and 1150–1023 cm −1 are mainly due OH and COC stretching from cellulose in the composite.…”

Section: Resultsmentioning

confidence: 51%

“…46,50 For PS/BC composite, a combination of both BC and PS characteristic peaks are observed, which confirms the presence of BC and PS fibers in the composite. 43 The presence of absorption peaks at 3270 cm −1 , and 1150-1023 cm −1 are mainly due OH and C O C stretching from cellulose in the composite. The peaks observed at 2918, 1643, and 1450 cm −1 are attributed to the methylene C H stretching, aromatic C C stretching, aromatic C C stretching corresponding to the presence of PS in the composite.…”

Section: Morphological and Chemical Characterizationmentioning

confidence: 95%

“…The composite membranes of PS and BC were produced by in situ culture of BC in the PS membrane. For this, first PS membranes were pretreated with ultraviolet radiation for 1 h to sterilize, and then circular discs cut to fit petriplates were placed in HS media 43 . All culture plates were statically incubated at 26°C and harvested after 14 days.…”

Section: Methodsmentioning

confidence: 99%

“…For this, first PS membranes were pretreated with ultraviolet radiation for 1 h to sterilize, and then circular discs cut to fit petriplates were placed in HS media. 43 All culture plates were statically incubated at 26 C and harvested after 14 days. The BC grows into the PS membrane during the culture and results in a composite membrane referred to as PS/BC membrane.…”

Section: Preparation Of Amphiphilic Ps/bc Membranementioning

confidence: 99%

“…Recently, our group reported a novel and facile environmentally friendly method for producing amphiphilic nano-microfibrous composite using in situ growth of nanofibrous BC into hydrophobic microfibrous recycled polystyrene (PS) membrane. 43 The recycled PS membrane was produced by a green, low cost, and low energy process using orange peel extract by hand drawing method. 44 PS nanofibers based oil-water separation membranes have been reported before for the separation of diesel from water.…”

Section: Introductionmentioning

confidence: 99%

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Hierarchical amphiphilic high‐efficiency oil–water separation membranes from fermentation derived cellulose and recycled polystyrene

Raghavan

Khandelwal

2020

J of Applied Polymer Sci

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A high-efficiency separation of oil and water can be achieved by using specially designed amphiphilic porous membrane. However, the preparation of such membranes often involves complex multistep chemical processes. Herein, we report an amphiphilic composite membrane (polystyrene [PS]/bacterial cellulose [BC] membrane) consisting of hydrophobic recycled PS and hydrophilic BC, fabricated by a facile in situ fermentation process. Not only these membranes exhibit a combination of contrasting wettability but also comprise of a hierarchical network of microfibers and nanofibers, which makes them ideal for oil-water separation. The structural and morphological properties of asproduced BC, recycled PS membrane, and PS/BC composite membrane were studied by Fourier transform infrared spectroscopy and scanning electron microscopy, respectively. The ability of the membranes to separate oil and water was tested by using an emulsion of hexane-in-water as the feed and the collected filtrates were characterized by optical microscopy and UV-Vis spectroscopy. PS membranes were unable to separate oil and water, while the PS/BC membrane efficiently separated water from the emulsion. PS/BC composite membranes showed a high water recovery of more than 90%, against only 57% recovery shown by BC. Mechanisms of oil-water separation for each membrane are discussed. The reusability of the PS/BC composite membrane was also demonstrated.

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Section: Resultsmentioning

confidence: 51%

Section: Morphological and Chemical Characterizationmentioning

confidence: 95%

Section: Methodsmentioning

confidence: 99%

Section: Preparation Of Amphiphilic Ps/bc Membranementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hierarchical amphiphilic high‐efficiency oil–water separation membranes from fermentation derived cellulose and recycled polystyrene

Raghavan

Khandelwal

2020

J of Applied Polymer Sci

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A study on the effect of the collector properties on the fabrication of magnetic polystyrene nanocomposite fibers using the electrospinning technique

Mohan

Singhal

Ramanan

2022

J of Applied Polymer Sci

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The role of the collector properties in changing the fiber morphology in electrospinning has not been completely understood yet. In this work, we studied the effect of different collectors on the helicity of the magnetic polystyrene nanocomposite fibers containing superparamagnetic magnetite nanoparticles.Aluminum and ice were used as solid collectors. Ethanol, ethanol-deionized (DI) water mixture, sodium dodecyl sulfate, Triton X-100, deionized water, and NaCl baths were used as liquid collectors. Ice, when surrounded by a conductive foil, produced excellent fiber alignment, but increased local humidity, inhibiting the continuous jet formation. The deionized water and NaCl bath exhibited minimum helicity. The surfactant bath produced different structures such as coiled, helical, and zig-zag with varied diameters. Ethanol and DI/Ethanol baths were found to retain the structure of the deformed fiber formed due to jet instability. The helicity of the fibers was observed to increase with decreasing surface tension. Incorporation of the magnetic phase affected the viscosity of the polymer solution and the hydrophobicity of the polystyrene fibers further influencing the obtained morphologies.

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Injectable hydrogel for sustained delivery of progranulin derivative Atsttrin in treating diabetic fracture healing

Moradi,

Witek,

Vivekanand Nayak

et al. 2023

Biomaterials

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In situ synthesized hydro-lipophilic nano and micro fibrous bacterial cellulose: polystyrene composites for tissue scaffolds

Cited by 7 publications

References 24 publications

Hierarchical amphiphilic high‐efficiency oil–water separation membranes from fermentation derived cellulose and recycled polystyrene

Hierarchical amphiphilic high‐efficiency oil–water separation membranes from fermentation derived cellulose and recycled polystyrene

A study on the effect of the collector properties on the fabrication of magnetic polystyrene nanocomposite fibers using the electrospinning technique

Injectable hydrogel for sustained delivery of progranulin derivative Atsttrin in treating diabetic fracture healing

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