Effect of Fe3O4 on the sedimentation and structure–property relationship of starch under different pHs

Palanikumar, S.; Siva, P.; Meenarathi, B.; Kannammal, L.; Anbarasan, R.

doi:10.1016/j.ijbiomac.2014.03.012

Cited by 10 publications

(8 citation statements)

References 23 publications

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“…A twin peak appeared at 576 and 619 cm −1 corresponded to the metal oxide (M-O) stretching vibration of Fe 3 O 4 . This is in accordance with an earlier report from our research team [26]. will be degraded due to the very high acidic pH and more electronegativity nature.…”

Section: Ftir Studysupporting

confidence: 93%

“…After the vigorous stirring for 5 min, a NaOH solution was added drop by drop (10 g NaOH dissolved in 100 mL DDW) till the attainment of a strongly alkaline pH (ca 12.5). The addition process was continued after the alkaline pH for the next 2 h. The Fe 3 O 4 formation was confirmed by the appearance of a dark colored precipitate (Scheme 1) [26,27]. At the end of reaction the reactants were transferred to a 500 mL beaker and put on a magnetic bar and kept for 5 min.…”

Section: Synthesis Of Cr Functionalized Fe 3 Omentioning

confidence: 99%

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Synthesis, characterization and non-isothermal degradation kinetics of poly(ε-caprolactone)/Fe3O4-dye nanocomposites

Anbarasan

Kohila²,

Meenarathi³

et al. 2019

SN Appl. Sci.

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Congo red (CR) dye functionalized magnetic nanoparticle was synthesized and characterized by Fourier Transform Infra Red, UV-visible, fluorescence emission spectra, field emission scanning electron microscopy and vibrating sample magnetometry like analytical techniques. The prepared nanohybrid was chemically tagged with poly(ε-caprolactone) (PCL) via ring opening polymerization of ε-caprolactone. The PCL/Fe 3 O 4-CR nanocomposites were characterized by the same techniques and differential scanning calorimetry and thermogravimetric analysis methods. The magnetic moment values of the Fe 3 O 4 after the formation of the nanohybrid and nanocomposite were found to be reduced due to the encapsulation and surface functionalization effects. The magnetic moment value of Fe 3 O 4 was decreased for the nanohybrid and nanohyrbid tagged PCL. The non-isothermal degradation kinetics was characterized in order to find out the energy of activation (E a) for the thermal degradation of the PCL. For the sake of comparison, the non-isothermal degradation kinetics of the methylorange functionalized Fe 3 O 4 end capped PCL was carried out and the results were critically compared.

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Section: Ftir Studysupporting

confidence: 93%

Section: Synthesis Of Cr Functionalized Fe 3 Omentioning

confidence: 99%

Synthesis, characterization and non-isothermal degradation kinetics of poly(ε-caprolactone)/Fe3O4-dye nanocomposites

Anbarasan

Kohila²,

Meenarathi³

et al. 2019

SN Appl. Sci.

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“…A new peak is observed at 877 cm −1 due to the CH out of plane bending vibration from the CR units. A twin peak at 553 cm −1 is ascribed to the FeO (MO) stretching of ferrite . Thus the FTIR spectrum confirms the chemical grafting of the nanohybrid onto the random co‐polymer backbone.…”

Section: Resultssupporting

confidence: 54%

Synthesis and characterization of magnetic and fluorescent styrene co‐polymer nanofiber

Eunice¹,

Meenarathi²,

Palanikumar³

et al. 2015

J of Applied Polymer Sci

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Fluorescent and magnetic poly(styrene) (PS) based random co-polymer nanofiber was synthesized in a controlled manner via chemical polymerization in three steps. A fluorescent and magnetic nanohybrid {Fe 3 O 4 /Congored (CR)} was separately prepared and chemically grafted onto the epichlorohydrin (ECH) units of the random co-polymer. Characterizations of the above synthesized polymers were done with the help of Fourier transform infrared (FTIR) spectroscopy, UV-visible spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, fluorescence emission spectroscopy, field emission scanning electron microscopy (FESEM), scanning electron microscopy (SEM), vibrating sample magnetometer (VSM) measurement, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and gel permeation chromatography (GPC) like analytical techniques. The FESEM results indicated that after the grafting of nanohybrid onto the random co-polymer backbone, the polymer exhibited a nanofiber like morphology. Due to the surface functionalization and encapsulation reactions, the magnetic moment value of the nanohybrid and its nanocomposites were found to be reduced. Synthesis and characterization of magnetic and fluorescent random co-polymer based nanofiber is the primary target of the present investigation and its application is extended to the catalysis field.

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“…Nanomaterials found wide applications in various science and engineering fields . Generally, the nano materials are used in catalysis field as a catalyst.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, catalytic and splinting activity of nano Ag end capped l‐glutathione bridged amphiphilic diblock copolymer

Jeyapriya¹,

Meenarathi²,

Anbarasan³

2016

J of Applied Polymer Sci

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l‐glutathione, a naturally occurring environmental friendly amino acid, was used as an initiator towards the ring opening polymerization (ROP) of ɛ‐caprolactone (CL) followed by the ROP of tetrahydrofuran (THF). The thiol group of l‐glutathione reduces Ag+ ions and chemically bound to the surface of Ag nanoparticles. The ROP of CL was carried out at 160 °C under nitrogen atmosphere in the presence of stannous octoate(SO) as catalyst whereas the ROP of THF was carried out at 45 °C for 24 h in the presence of phthalic anhydride (PAH) as a comonomer. The synthesized homo, di and nano Ag end capped diblock copolymers were characterized by FTIR, DSC, TGA, FESEM, high resolution transmission electron microscope (HRTEM), EDAX, GPC, nuclear magnetic resonance (NMR), Fluorescence and CD. Further the application of diblock copolymer was tested for splinting activity. The catalytic reduction of 4‐nitrophenol (NP) in the presence of nano Ag end capped diblock copolymer was carried out with the assistance of sodium borohydride as a reducing agent and the apparent rate constant (kapp) was determined and compared with the literature values. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43804.

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Effect of Fe3O4 on the sedimentation and structure–property relationship of starch under different pHs

Cited by 10 publications

References 23 publications

Synthesis, characterization and non-isothermal degradation kinetics of poly(ε-caprolactone)/Fe3O4-dye nanocomposites

Synthesis, characterization and non-isothermal degradation kinetics of poly(ε-caprolactone)/Fe3O4-dye nanocomposites

Synthesis and characterization of magnetic and fluorescent styrene co‐polymer nanofiber

Synthesis, characterization, catalytic and splinting activity of nano Ag end capped l‐glutathione bridged amphiphilic diblock copolymer

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