Mechanical Properties of Sulfonated Poly (Ether Ether Ketone) Nanocomposite Membranes

Sonpingkam, S.; Pattavarakorn, Datchanee

doi:10.7763/ijcea.2014.v5.374

Cited by 27 publications

(24 citation statements)

References 27 publications

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“…As mentioned above, Polyether ether ketone contains aromatic rings and carbonyl group. Basically, the aromatic C-C band and the stretching of carbonyl groups of the PEEK can be observed at 1490 cm -1 and 1655 cm -1 [6]. Also, …”

Section: Resultsmentioning

confidence: 94%

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Preparation and characterization of the modified PEEK/CNTs-nanocomposites

Samie¹,

Nejati²,

Avazfard³

et al. 2016

AIP Conference Proceedings

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Abstract. Polyether ether ketone (PEEK) is a high performance thermoplastic due to the high thermal and mechanical properties. To improve more toughness and flexibility of the PEEK, thermoplastic vulcanized (TPV) was applied and mixed with PEEK matrix. The multi-walled carbon nanotubes (MWCNTs) were also used to prepare nanocomposites and they were mixed through melt blending. Mechanical test results showed that the flexibility improved by addition of TPV up to 10 w% and also CNTs nanoparticles increased tensile strength of the nanocomposites. FTIR spectroscopy confirmed the compatibility between the components. Thermogravimetric analysis (TGA) indicated an improvement in the thermal stability of the PEEK matrix by applying CNTs nanoparticles. Scanning electron microscopy observations demonstrated that the CNTs nanoparticles have been uniformly distributed into the PEEK matrix. Optimal thermal and mechanical properties was found for the nanocomposite contained 10 w% of TPV and 0.5 w% of CNTs and a super tough nanocomposite could be successfully prepared.

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Section: Resultsmentioning

confidence: 94%

“…This is generally a difficult task due to the tendency of the CNTs to gather and form bundles [3,6]. To achieve the quality of the dispersion of TPV and CNTs in the blend and the nanocomposites, the fracture surfaces were examined by SEM.…”

Section: -3mentioning

confidence: 99%

Preparation and characterization of the modified PEEK/CNTs-nanocomposites

Samie¹,

Nejati²,

Avazfard³

et al. 2016

AIP Conference Proceedings

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“…In addition, SEM images showed the changes from a plain homogenous pattern to a complex fiber network with porosities and blister-like sub-surface in the 98% sulfuric acid treated group compared to the control group. However, FTIR analysis could not detect any new peak around 3,440 cm −1 , which has been claimed to represent the alcohol group bond of the sulfonic acid functional group 25,26) . Therefore, it was assumed that an one-min application of 98% sulfuric acid could cause changes only in the surface characteristics, without creating any new functional groups.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies have shown that piranha etching significantly increased the strength of the bonds between PEEK and dental adhesives by removing organic remnants, increasing surface polarity, and breaking aromatic structures. These led to an increase in the number of functional groups 19,25,26) . The finding of this study did not fully support those of previous studies because the result of FTIR did not show any new chemical spectra.…”

Section: Discussionmentioning

confidence: 99%

Effect of surface pretreatments on resin composite bonding to PEEK

Silthampitag

Chaijareenont

Tattakorn

et al. 2016

Dental Materials Journal

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This study evaluated the effect of surface pretreatments on resin composite bonding to polyetheretherketone (PEEK). Four groups of surface pretreatment (no pretreatment, etched with 98% sulfuric acid, etched with piranha solution and sandblasting with 50 µm alumina) were performed on PEEK. Surface roughness, Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) analysis were examined. Shear bond strength (SBS) and interface characteristics were also evaluated after the specimens were bonded with resin materials. Two-way ANOVA analysis revealed significance on two main effects and interactions. Tukey's multiple comparisons test showed that the SBS of resin composite on PEEK were the highest in the group etched with 98% sulfuric acid and bonded with Heliobond ® (p<0.05). All pretreatments produced similar spectra of FTIR patterns. SEM demonstrated porosities and pitting from chemical etching, which suggested a significant influence on the adhesion between PEEK and resin materials.

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“…The unique hydration capabilities of the benzimidazole heterocycle, along with their high thermal and mechanical integrity, make them highly suitable for their evaluation as high temperature PEMs [19][20][21][22]. PAESs in combination with carbon nanotubes and inorganic fillers have also been studied by researchers as PEMs [23][24][25][26][27][28]. Among the promising candidates for PEM materials, sulfonated poly (arylene ether sulfone)s (SPAESs) are the well-known engineering thermoplastics with excellent thermal and chemical resistance.…”

Section: Introductionmentioning

confidence: 99%

Sulfonated poly (arylene ether sulfone) proton exchange membranes for fuel cell applications

Kiran

Gaur

2015

Green Processing and Synthesis

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Sulfonated poly (arylene ether sulfone) membranes were synthesized by direct copolymerization of 4,4-bis (4-hydroxyphenyl) valeric acid, 4,4′-difluorodiphenyl sulfone and synthesized sulfonated 6F-bisphenol-A/ bisphenol-A as novel proton exchange membranes for fuel cell applications. Prepared membranes were subsequently crosslinked with synthesized 6F-bisphenol-A based epoxy resin (EFN) by thermal curing reaction keeping in view the resilience and toughness of the membranes. The structural characterization was done by using Fourier transform infrared (FTIR), 1 H nuclear magnetic resonance (NMR) and 13 C NMR techniques. Proton conductivity of the membranes was determined by a four-point probe technique. Methanol permeability was determined by using a diffusion cell in which concentration of the liquids was determined by UV-spectroscopic technique. The enhancement in mechanical properties determined by a universal testing machine and also a better oxidative stability were observed for the crosslinked membranes. However, a decrease in their water and methanol absorption, ion exchange capacity, proton conductivity and methanol permeability was observed. This was due to the reduction in the numbers of ionic channels in case of crosslinked membranes which was confirmed by carrying out morphological analysis of the membranes using atomic force microscopy. In addition, X-ray diffraction measurement by XPERT-PRO diffractometer was also used for structural characterization. Crosslinked membranes showed better thermal stability as determined by thermogravimetric analysis and differential scanning calorimetry.

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Mechanical Properties of Sulfonated Poly (Ether Ether Ketone) Nanocomposite Membranes

Cited by 27 publications

References 27 publications

Preparation and characterization of the modified PEEK/CNTs-nanocomposites

Preparation and characterization of the modified PEEK/CNTs-nanocomposites

Effect of surface pretreatments on resin composite bonding to PEEK

Sulfonated poly (arylene ether sulfone) proton exchange membranes for fuel cell applications

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