Synthesis, characterization and band gap energy of poly(<b><i>ε</i></b>-caprolactone)/Sr-MSA nano-composite

Kannammal, L.; Palanikumar, S.; Meenarathi, B.; Yelilarasi, A.; Anbarasan, R.

doi:10.1088/0022-3727/47/13/135109

Cited by 15 publications

(21 citation statements)

References 20 publications

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“…The carbonyl stretching and COC linkage can be seen at 1729 and 1187 cm −1 , respectively. The C=O and COC stretching result is matched with the earlier publication . The CN stretching of l ‐glutathione appeared at 1370 cm −1 .…”

Section: Resultssupporting

confidence: 89%

“…The DSC curve of l ‐glutathione initiated ROP of CL is given in Figure (a). The system exhibits an endothermic peak at 64.3 °C due to the melt transition ( T m ) of PCL in accordance with Kannammal and co‐workers report . Figure (b) represents the T m of the diblock copolymer that appeared at 63.17 °C, as compare to the T m of homopolymer the copolymer exhibited the lowest temperature .…”

Section: Resultssupporting

confidence: 86%

“…The nanoparticle formation is further confirmed by HRTEM. The present system produced somewhat lower molecular weight when compared with the literature . This confirmed the less initiating efficiency of the l ‐glutathione towards the ROP of CL due to the structural entity.…”

Section: Resultssupporting

confidence: 76%

“…The C5O and CAOAC stretching result is matched with the earlier publication. 43 The CAN stretching of L-glutathione appeared at 1370 cm 21 . 44 The C@H out of plane bending vibration (OPBV) appeared at 728 cm 21 .…”

Section: Resultsmentioning

confidence: 99%

“…The system exhibits an endothermic peak at 64.3 8C due to the melt transition (T m ) of PCL in accordance with Kannammal and co-workers report. 43 Figure 7(b) represents the T m of the diblock copolymer that appeared at 63.17 8C, as compare to the T m of homopolymer the copolymer exhibited the lowest temperature. 2 This is due to the presence of hydrophilic PTHF segment that absorbs moisture from the atmosphere and results reduction in the T m of the copolymer.…”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultssupporting

confidence: 89%

Section: Resultssupporting

confidence: 86%

Section: Resultssupporting

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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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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Synthesis, characterization, and drug release activity of structurally modified poly(vinyl alcohol)

Jeyaraman¹,

Jeyabala²,

Meenarathi³

et al. 2018

J of Applied Polymer Sci

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The main aim of the present investigation is synthesis of drug-grafted poly(vinyl alcohol) (PVA) for sustainable drug release in order to avoid bulk release and unwanted side effects. Here, the PVA was structurally modified with five different drug molecules in DMSO medium at 85 8C under N 2 atmosphere for 2 h. The structure of modified PVA was confirmed by FTIR and 1 H NMR spectra and further it was characterized by TGA, DSC, and SEM. The tensile strength and % elongation for the structurally modified PVA were determined. The FTIR spectrum showed peaks corresponding to the C@O and CAS stretching due to the grafted drug molecules. The 1 H NMR spectrum showed the acrylic CH 2 proton signal of PVA around 1.6 ppm. The SEM showed different surface morphology for the structurally modified PVA. The mechanical properties of the structurally modified PVA was found to be reduced due to the presence of traces of solvent molecules and the breaking of inter-and intramolecular hydrogen bonding. The sustainable drug release through hydrolysis mechanism was tested at the pH of 7.3. Generally, the drug release followed the Korsmeyer-Peppas model with Fickian drug transportation mechanism except Furosemide (Fur)-grafted PVA system at the pH of 7.3. V C 2018Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46620.

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Synthesis and characterization of novel fluorescent amphiphilic diblock copolymer

Dhanalakshmi¹,

Meenarathi²,

Anbarasan³

2016

Polym. Bull.

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Synthesis, characterization and band gap energy of poly(ε-caprolactone)/Sr-MSA nano-composite

Cited by 15 publications

References 20 publications

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

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

Synthesis, characterization, and drug release activity of structurally modified poly(vinyl alcohol)

Synthesis and characterization of novel fluorescent amphiphilic diblock copolymer

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