Chemical synthesis and surface morphology of amorphous hydrogenated carbon nitride film deposited by N<sub>2</sub>/CH<sub>4</sub>dielectric barrier discharge plasma

Majumdar, Abhijit; Das, Sadhan Chandra; Shripathi, T.; Hippler, R.

doi:10.1080/15685543.2012.699751

Cited by 61 publications

(37 citation statements)

References 31 publications

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“…The remaining peak corresponded to the NH moiety of the urethane bond of the PE‐X. Besides, the urethane carbonyl group was visible in the FTIR spectrum of PE‐X as a CO stretching vibration at 1680 cm −1 , and this further confirmed that the chain extension reaction proceeded between PE‐H and HDI. Similar, chain extension reaction and terminal groups for the PEs are reported by Shirahama et al…”

Section: Resultsmentioning

confidence: 66%

Synthesis of high molecular weight aromatic polyesters via integrated alternating ring‐opening copolymerization and chain extension methods

Cheng

Rabnawaz

Khan

et al. 2018

J of Applied Polymer Sci

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Due to their good mechanical properties, high molecular weight polyesters (PEs) are highly desirable for a wide range of applications especially in the packaging industry. However, the synthesis of high molecular weight polymers by energy efficient methods is difficult. In this study, a series of semi‐aromatic PEs were synthesized via the alternating ring‐opening copolymerization (ROCOP) of phthalic anhydride (PA) and cyclohexene oxide (CHO) using a salen chromium(III) complex as a catalyst and 4‐(dimethylamino)pyridine as a cocatalyst. By varying the molar ratios between CHO and PA, PEs of different molecular weights were obtained. Hexamethylene diisocyanate was used as a chain extender that further increased the molecular weights of these PEs. These chain extended aromatic polyesters (PE‐Xs) showed significant improvement in the glass transition temperature (Tg) values. Thus, integration of ROCOP with the chain extension method can be used as an effective strategy to prepare high molecular weight PEs with improved thermal stabilities and enhanced mechanical properties. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47200.

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Section: Resultsmentioning

confidence: 66%

Synthesis of high molecular weight aromatic polyesters via integrated alternating ring‐opening copolymerization and chain extension methods

Cheng

Rabnawaz

Khan

et al. 2018

J of Applied Polymer Sci

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“…The binding energies of N–C and C≡N groups were observed at the same value so their peaks overlapped in the XPS spectrum. 35 To confirm that these two groups are present, the FTIR spectrum of the 80/20 blend was obtained for all surface treatment times. Figure 7(a) and (b) shows the C≡N group at 2200 cm −1 wavenumber.…”

Section: Resultsmentioning

confidence: 99%

Design, synthesis, characterization, and cytotoxicity of PCL/PLGA scaffolds through plasma treatment in the presence of pyrrole for possible use in urethral tissue engineering

et al. 2019

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Electrospinning has proven to be a suitable technique for the production of small diameter tubes, with diverse applications, in the field of tissue engineering. In this work, tubular scaffolds were prepared by electrospinning a polycaprolactone/polylactic-co-glycolic acid (PLGA) blend and then treated with polypyrrole plasma for a possible application with urethral tissue. Scanning electron microscopy micrographs showed that for 10% and 20% of the PLGA in the blend, the microfibers, of varying diameters, were free of defects. The elastic modulus of the tubular scaffolds was highest (19 MPa) at 30% of PLGA, while the strain to break was maximum at 10-20% PLGA. However, at 30% of PLGA, within the polycaprolactone, the mechanical synergy (strain at break) was lost. Epithelial cells and smooth muscle cells' viability on 80/20 blends was high. When this scaffold was treated for 15 min with polypyrrol plasma, an improvement in cell viability was observed, with few polypyrrol particles being deposited and little scaffold degradation. X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy showed the presence of NH, C-N, and CN groups as the chemical groups responsible of this behavior. Therefore, these scaffolds with the polypyrrole surface treatment can be used in the urethra tissue engineering.

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“…Also, broadening of the intense peaks is observed in the films with average or lesser conductivity due to the shake-off satellites that appear by reason of the anomalous surface charging effect [43].…”

Section: Xps Analysismentioning

confidence: 98%

Spray deposited Mg-doped SnO2 thin film LPG sensor: XPS and EDX analysis in relation to deposition temperature and doping

Thomas¹,

Benoy²

2015

Journal of Alloys and Compounds

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Chemical synthesis and surface morphology of amorphous hydrogenated carbon nitride film deposited by N₂/CH₄dielectric barrier discharge plasma

Cited by 61 publications

References 31 publications

Synthesis of high molecular weight aromatic polyesters via integrated alternating ring‐opening copolymerization and chain extension methods

Synthesis of high molecular weight aromatic polyesters via integrated alternating ring‐opening copolymerization and chain extension methods

Design, synthesis, characterization, and cytotoxicity of PCL/PLGA scaffolds through plasma treatment in the presence of pyrrole for possible use in urethral tissue engineering

Spray deposited Mg-doped SnO2 thin film LPG sensor: XPS and EDX analysis in relation to deposition temperature and doping

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Chemical synthesis and surface morphology of amorphous hydrogenated carbon nitride film deposited by N2/CH4dielectric barrier discharge plasma

Cited by 61 publications

References 31 publications

Synthesis of high molecular weight aromatic polyesters via integrated alternating ring‐opening copolymerization and chain extension methods

Synthesis of high molecular weight aromatic polyesters via integrated alternating ring‐opening copolymerization and chain extension methods

Design, synthesis, characterization, and cytotoxicity of PCL/PLGA scaffolds through plasma treatment in the presence of pyrrole for possible use in urethral tissue engineering

Spray deposited Mg-doped SnO2 thin film LPG sensor: XPS and EDX analysis in relation to deposition temperature and doping

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Chemical synthesis and surface morphology of amorphous hydrogenated carbon nitride film deposited by N₂/CH₄dielectric barrier discharge plasma