Synthesis of exfoliated poly(styrene-co-methyl methacrylate)/montmorillonite nanocomposite using ultrasound assisted in situ emulsion copolymerization

Bhanvase, Bharat A.; Pinjari, Dipak V.; Gogate, Parag R.; Sonawane, Shirish H.; Pandit, Aniruddha B.

doi:10.1016/j.cej.2011.11.084

Cited by 119 publications

(51 citation statements)

References 41 publications

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“…The shifted onset decomposition temperature from 381.1°C [P(MMA-co-St)] was raised to 391.5 and 402.7°C for basicand acid catalyst nanohybrids, respectively. The findings are in accordance with the previous studies (40)(41)(42)(43). The weight loss value of SiO 2 /P(MMA-co-St) hybrid prepared in acid condition is lower than that of SiO 2 /P(MMA-coSt) hybrid synthesized in basic and pure P(MMA-co-St) which are ~88.7, 89.75 and 94.7% in air, respectively.…”

Section: Thermal Stability Of Silica/p(mma-co-st) Hybrid Nanoparticlessupporting

confidence: 83%

Morphology control of silica/poly(methyl methacrylate-co-styrene) hybrid nanoparticles via multiple-miniemulsion approach

Nazarabady

Farzi

2016

E-Polymers

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An appropriate approach has been used for the preparation of silica/P(MMA-co-St) hybrid nanoparticles through converting previously prepared inverse miniemulsions into a direct miniemulsion and consequently, using the droplet nucleation polymerization technique. In the early stage of the procedure, silica particles were synthesized from TEOS in the presence of NH 4 OH or HCl as a catalyst through a base or acid-catalyzed sol-gel process. TEOS, ethanol and tirmethoxyvinylsilan were mixed in MMA:St (50:50) to create the inverse miniemulsion I, similarly CTAB, NH 4 OH/HCl and distilled water were dispersed into MMA:St (50:50) and called inverse miniemulsion II. Then, the two mentioned inverse miniemulsions were emulsified in water to achieve direct miniemulsion. The nature of the catalyst and TEOS concentration varied, for the aims of investigation, their effect on the morphology and size of hybrid nanoparticles. This route provided a unique process for silica/polymer hybrid nanoparticles production, avoiding organic solvents. Transmission electron microscopy micrographs revealed that, the morphology of the hybrid nanoparticles can be controlled by the nature of the catalyst.

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Section: Thermal Stability Of Silica/p(mma-co-st) Hybrid Nanoparticlessupporting

confidence: 83%

Morphology control of silica/poly(methyl methacrylate-co-styrene) hybrid nanoparticles via multiple-miniemulsion approach

Nazarabady

Farzi

2016

E-Polymers

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“…The polystyrene synthesized via random radical polymerization is an amorphous polymer, thus there is no sharp diffraction peaks in its XRD curve [33][34][35][36][37]. For this work, the XRD curves of the fibrous membranes are shown in Fig.…”

Section: Crystallization Behaviorsmentioning

confidence: 99%

The structure and property evaluation of electrospun porous fibrous membrane based on the copolymer of styrene and butyl acrylate

Cao

2015

J Porous Mater

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The oils leaked into water seriously threaten human health, thus it is urgent for scientific researchers to treat the pollution caused by oils. In this work, poly (styrene-co-butyl acrylate)-based fibrous membranes which were able to absorb and separate oils from water were prepared via electrospinning. Their thermal properties and crystallization behaviors were characterized by thermogravimetric analyzer, differential scanning calorimetry, and X-ray diffractometer. Field emission scanning electron microscopy was employed to observe their pores, and a gravimetric method was adopted to calculate their porosity. Water contact angle in air and oil contact angle in water were used to describe the hydrophobicity of the prepared fibrous membranes. Finally, the fibrous membranes were applied to the fields of oils absorption and separation. The results showed that the absorbencies of the fibrous membranes for unmoving pure oil were higher than 50 g/g, and the maximum absorbency even reached 91 g/g; additionally, the fibrous membranes also absorbed moving oil from the mixture of oil and water. The floating oil was completely separated from water by the used fibrous membrane after separation apparatus ran for 100 min.

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“…In the present study, ultrasound act as an intensified source of energy dissipation and shearing action generated by ultrasonic cavitation which helps in exfoliation and homogeneous dispersion of clay [31]. 20 g rose essence was dispersed in 1 L demineralized water to prepare the rosewater solution.…”

Section: Loading Fragrance On Halloysite Nanocontainersmentioning

confidence: 99%

Studies on Fragrance Delivery from Inorganic Nanocontainers: Encapsulation, Release and Modeling Studies

Ghodke

Sonawane

Bhanvase³

et al. 2015

J. Inst. Eng. India Ser. E

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The present work deals with encapsulation of fragrance molecule in inorganic nanocontainers substrate and investigation of its prolonged release at different pH condition. The nanocontainers used were aluminosilicate clay (Halloysite) having cylindrical shape with outside diameter in the range of 30-50 nm, 15 nm lumen and length equal to 800 ± 300 nm. Rosewater absolute was used as a sample fragrance for loading in nanocontainer and delivery purpose. The fragrance loaded nanocontainers were coated with a thin layer of polyelectrolyte i.e. Polyacrylic Acid (PAA). The structural characteristics of prepared nanocontainers were determined by using Fourier Transform Intrared Spectroscopy (FTIR), Thermal Gravimetric Analysis (TGA) and UV spectroscopy analysis. Release of fragrance molecules in the aqueous medium was monitored for 24 h. The fragrance release was found to be responsive as the amount of fragrance release increases with increase in pH value from 3 to 7. Fragrance release has been studied by using various permeation kinetic models such as zero order, first order, Hixson-Crowell, Higuchi, Korsmeyer-Peppas and Hopfenberg models. Korsemyer-Peppas shows the best fit (R 2 = 0.9544) compared to other kinetic model for the release of fragrance from nanocontainers.

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Synthesis of exfoliated poly(styrene-co-methyl methacrylate)/montmorillonite nanocomposite using ultrasound assisted in situ emulsion copolymerization

Cited by 119 publications

References 41 publications

Morphology control of silica/poly(methyl methacrylate-co-styrene) hybrid nanoparticles via multiple-miniemulsion approach

Morphology control of silica/poly(methyl methacrylate-co-styrene) hybrid nanoparticles via multiple-miniemulsion approach

The structure and property evaluation of electrospun porous fibrous membrane based on the copolymer of styrene and butyl acrylate

Studies on Fragrance Delivery from Inorganic Nanocontainers: Encapsulation, Release and Modeling Studies

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