FTIR analysis of silane grafted high density polyethylene

Ahmed, Gulshan Shahnaz; Gilbert, Marianne; Mainprize, S.; Rogerson, Madeleine

doi:10.1179/174328909x387711

Cited by 53 publications

(21 citation statements)

References 20 publications

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“…Symmetrical stretching of T-O-T was attributed to the bands at 445, 620, and 737 cm -1 [35]. For ANA-s-MPTES and ANA-MPTES, the band around 2884-2973 cm -1 was detected as asymmetric stretching of CH2 from the propyl groups after surface modification with MPTES [27,36].…”

Section: Ftir Characterizationmentioning

confidence: 97%

Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Prapainainar

Kongkachuichay

et al. 2017

Applied Surface Science

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Highlight Mordenite and analcime were used as fillers in Nafion composite membranes for DMFC. The composite membranes were fabricated by spray method. Methanol permeability was reduced up to 2-3 times using the composite membranes. Mordenite/Naifon membrane showed 2 times higher DMFC performance than Nafion117. AbstractThe aim of this work was to improve proton exchange membranes (PEMs) used in direct methanol fuel cells (DMFCs). A membrane with a high proton conductivity and low methanol permeability was required. Zeolite filler in Nafion (NF matrix) composite membranes were prepared using two types of zeolite, mordenite (MOR) and analcime (ANA). Spray method was used to prepare the composite membranes, and properties of the membranes were investigated: mechanical properties, solubility, water and methanol uptake, ion-exchange capacity (IEC), proton conductivity, methanol permeability, and DMFC performance. It was found that MOR filler showed higher performance than ANA. The MOR/Nafion composite membrane gave better properties than ANA/Nafion composite membrane, including a higher proton conductivity and a methanol permeability that was 2 -3 times lower. The highest DMFC performance (10.75 mW·cm -2 ) was obtained at 70 °C and with 2 M methanol, with a value 1.5 times higher than that of ANA/Nafion composite membrane and two times higher than that of commercial Nafion 117 (NF 117).

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Section: Ftir Characterizationmentioning

confidence: 97%

Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Prapainainar

Kongkachuichay

et al. 2017

Applied Surface Science

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“…These peaks do not exist in Ic/Hyd. FTIR spectrum . It should be mentioned that in FTIR spectrum of PVA there is an absorbing band in 1092 cm −1 , which is related to stretching vibration of (COC) OH, but it is overlapped with SiOSi peak in Ic‐NC/Hyd.…”

Section: Resultsmentioning

confidence: 99%

Ion crosslinked poly(acrylic acid‐co‐acrylamide)/poly(vinyl alcohol)/Cloisite 15A nanocomposite hydrogels as potential wound dressing films: Effect of clay content on water absorption kinetic and mechanical properties

2018

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Tough and flexible ion crosslinked nanocomposite (NC) hydrogel films were synthesized as potential wound dressings. Poly(acrylic acid‐co‐acrylamide) chains were crosslinked using N,N′‐methylene bis‐acrylamide and Cloisite 15A as chemical and physical crosslinkers, respectively. As the synthesized hydrogels were mechanically weak, ion crosslinking method was used. As the main aim of this work, the effect of clay content on water absorption kinetic and mechanical properties of synthesized hydrogels was studied. Fourier‐transform infrared spectroscopy, scanning electron microscopy, energy dispersive X‐ray analysis, and element mapping analysis were used to characterize the synthesized hydrogel samples. For further information about water absorption and mechanical properties of the hydrogel samples, water absorption kinetics and tensile tests were done. Results showed that in an optimum amount of clay content, the main properties of the hydrogel samples were improved, which were accorded to the simultaneous effect of ion and physical crosslinking. All results confirmed that the ion crosslinked NC hydrogel with 1 wt%/vol% of clay is the sample with the best investigated properties. POLYM. COMPOS., 40:1762–1773, 2019. © 2018 Society of Plastics Engineers

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“…but regarding absorption band at 1375.78 cm -1 arises due to Bending vibrations of C-O groups and the absorption band at 1255.97 cm- 1 . It has been attributed to bending vibrations of C-O groups [22,23,24]. The Fourier transforms infrared spectra of (PP/PMMA/HDPE) blends, with different ratio of HDPE are shown in figure (3,4,5 and 6).…”

Section: Ft-ir Spectroscopic Analysismentioning

confidence: 99%

Effect of High Density Polyethylene (HDPE) on Structural and Optical Properties of (PP/PMMA) Blends

Habeeb

Abbas

2015

ILCPA

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ABSTRACT. In the present work, Polypropylene (PP) was blended with poly methyl methacrylate (PMMA) to form (PP/PMMA) polymer blends. High Density Polyethylene (HDPE) was mixed into these blends at different weight fractions (2,4,6,8) % wt to form (PP/PMMA/HDPE) blends were prepared using an one screw extruder. results obtained from Scanning Electron Microscopy (SEM) revealed that there was a reduction in surface roughness any decrease in clusters, drilling and bends, as for Fourier Transform Infrared (FT-IR) spectrometry showed no change in the wave numbers of the functional groups. The optical properties of samples are investigated by measuring optical absorption spectra in the wavelength range from 260 to 1100 nm. this results show that E g of the blends increases with increasing high density polyethylene contents, the indirect optical band gaps for (PP/PMMA) and (PP/PMMA/HDPE) blends were estimated to be about 2.83,2.9,2.95,3and 3.1 eV for indirect allowed transitions, whereas the indirect forbidden band gaps were determined as 2,2.1,2.15,2.2 and 2.3 eV with increase high density Polyethylene contents, respectively. The absorbance, absorption coefficient, extinction coefficient and the imaginary dielectric constant of (PP/PMMA/HDPE) decreases with increasing of HDPE percentages except the transmittance, refraction index and real part of the dielectric constant increase with increasing of high density polyethylene.

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FTIR analysis of silane grafted high density polyethylene

Cited by 53 publications

References 20 publications

Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Ion crosslinked poly(acrylic acid‐co‐acrylamide)/poly(vinyl alcohol)/Cloisite 15A nanocomposite hydrogels as potential wound dressing films: Effect of clay content on water absorption kinetic and mechanical properties

Effect of High Density Polyethylene (HDPE) on Structural and Optical Properties of (PP/PMMA) Blends

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