Dynamic mechanical analysis and thermal properties of LLDPE/EVA/modified silica nanocomposites

Khonakdar, Hossein Ali

doi:10.1016/j.compositesb.2015.02.031

Cited by 33 publications

(12 citation statements)

References 31 publications

(30 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure A, it is found that the fuel cell performance of composite membranes exhibited slightly better than pristine SPAEK membrane. The open circuit voltage (OCV) of all fabricated MEAs showed above 0.92 V, indicating that the as‐synthesized membranes had good fuel (H 2 ) permeation resistance . The maximum power densities of SPAEK, SPAEK/SiO 2 , SPAEK/ƒ‐SiO 2 , and Nafion 115 membranes were approximately 296.75, 339.96, 445.34, and 295.99 mW cm −2 under 100% RH, respectively.…”

Section: Resultsmentioning

confidence: 94%

Effect of functionalized SiO ₂ toward proton conductivity of composite membranes for PEMFC application

et al. 2019

View full text Add to dashboard Cite

Summary Organic‐inorganic composite membranes were prepared by introducing silicon dioxide (SiO2) or functionalized SiO2 (ƒ‐SiO2) with various particle sizes into sulfonated poly (arylene ether ketone) (SPAEK) containing pendant groups, and the membrane was manufactured via directly casting which is a cost‐competitive method. The structure and morphology of the composite membranes were confirmed by 1H NMR, FT‐IR, XRD, and FE‐SEM analysis which demonstrated that inorganic nanofillers were successfully introduced. The FE‐SEM surface images showed that SiO2 and ƒ‐SiO2 particles were very well dispersed within the membrane sheets. The water uptake and swelling ratio of the composite membranes including SiO2 or ƒ‐SiO2 almost did not change when compared with the pristine SPAEK membrane. All fabricated membranes demonstrated good thermal/dimensional stabilities, robust mechanical behavior, and excellent proton conductivity. In particular, the SPAEK/ƒ‐SiO2 composite membranes exhibited improved ionic conductivity compared with the pristine membrane at 70% relative humidity (RH) due to hydrogen bonding between ─SO3H groups of functionalized inorganic filler and polymer backbone. Furthermore, the maximum power density of SPAEK/ƒ‐SiO2 reached as high as 273.11 mW cm−2 at 60°C under 70% RH. Therefore, the composite membranes with ƒ‐SiO2 testify to great potential as polymer electrolyte membrane.

show abstract

Section: Resultsmentioning

confidence: 94%

Effect of functionalized SiO ₂ toward proton conductivity of composite membranes for PEMFC application

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Mechanical testing is one of the most sensitive measuring techniques for thermal analysis. The temperature dependence of the modulus and mechanical loss of the composites also provides significant information on the end‐use performance of the composites tested and can easily be applied to predict control process behavior . Figure shows the change of the storage modulus with temperature for LGFTP composites at several different scanning frequencies.…”

Section: Resultsmentioning

confidence: 99%

Study on dynamic mechanical, thermal, and mechanical properties of long glass fiber reinforced thermoplastic polyurethane/poly(butylene terephthalate) composites

Zhang

Qin

et al. 2016

Polymer Composites

View full text Add to dashboard Cite

Long glass fiber reinforced thermoplastic polyurethane and Poly (butylene terephthalate) (PBT) (LGFTP) composites with different ratios of TPU and PBT were prepared by using self-designed impregnation device. The dynamic mechanical, thermal, and mechanical properties of LGFTP composites were studied. Results showed that there was good compatibility between TPU and PBT. Dynamic mechanical thermal analysis (DMA) results indicated that the TPU content and scanning frequencies had some influence on dynamic mechanical properties and glass transition of LGFTP composites. In addition, the Arrhenius relationship has been used to calculate the activation energy of atransition of the composites. Differential scanning calorimetry (DSC) analysis indicated that with increasing TPU content the crystallization temperature (T c ), the melting point (T m ), and the percent crystallinity (X c ) decreased. Both TG and DTG curves of the LGFTP composites are shifted to lower temperatures with the increasing of TPU content. Mechanical properties showed that the addition of TPU could lead to a remarkable increase tensile and notched izod impact strength with a small reduction in flexural strength and modulus of LGFTP composites. POLYM. COMPOS., 00:000-000,

show abstract

“…This is due to good distribution of HNTs throughout the PP matrix as well as good interfacial bonding between polymer and filler. 35 It could be observed from Figure 6 that there is a substantial raise in the T g with the addition of surface-modified HNTs doped polymer composites than pure PP. The T g for pure PP was at 6.8°C, whereas T g with the incorporation of surface-modified HNTs of 6 wt% and 8 wt% were at 7.2°C and 8.3°C, respectively.…”

Section: Dma Analysismentioning

confidence: 89%

Mechanical, thermal and dynamic-mechanical studies of functionalized halloysite nanotubes reinforced polypropylene composites

Krishnaiah

Manickam

Ratnam

et al. 2020

Polymers and Polymer Composites

View full text Add to dashboard Cite

Mechanical, dynamic-mechanical and thermal performance of polypropylene (PP) composites which are composed of (3-Aminopropyl) triethoxysilane (APTES) functionalized Halloysite nanotubes (HNTs) were investigated. Functionalization of HNTs was confirmed by the presence of amine stretching peaks in the FTIR spectrum. A decrease in the agglomeration and high dispersion of APTES-HNTs across the PP matrix was confirmed by scanning electron micrographs (SEM). The mechanical properties of APTES-HNT-PP polymer composites were superior over their unmodified counterparts. Tensile properties such as maximum strength, Young’s modulus and impact strength were significantly enhanced by 28%, 45% and 60% respectively, with 6 wt% incorporation of surface-modified HNTs into PP matrix. A drastic improvement of stiffness and thermal stability of composites was noted with the incorporation of APTES modified HNTs into PP polymer. Differential scanning calorimetry (DSC) analysis showed a total increase of 22% in the crystallinity of clay polymer nanocomposite after filled with surface-modified HNTs. Overall, the outcome of this research confirms the modification of the surface of HNTs with a silane coupling agent, which enhances the mechanical and thermal performance of PP composites incorporated HNTs.

show abstract

Dynamic mechanical analysis and thermal properties of LLDPE/EVA/modified silica nanocomposites

Cited by 33 publications

References 31 publications

Effect of functionalized SiO ₂ toward proton conductivity of composite membranes for PEMFC application

Effect of functionalized SiO ₂ toward proton conductivity of composite membranes for PEMFC application

Study on dynamic mechanical, thermal, and mechanical properties of long glass fiber reinforced thermoplastic polyurethane/poly(butylene terephthalate) composites

Mechanical, thermal and dynamic-mechanical studies of functionalized halloysite nanotubes reinforced polypropylene composites

Contact Info

Product

Resources

About

Dynamic mechanical analysis and thermal properties of LLDPE/EVA/modified silica nanocomposites

Cited by 33 publications

References 31 publications

Effect of functionalized SiO 2 toward proton conductivity of composite membranes for PEMFC application

Effect of functionalized SiO 2 toward proton conductivity of composite membranes for PEMFC application

Study on dynamic mechanical, thermal, and mechanical properties of long glass fiber reinforced thermoplastic polyurethane/poly(butylene terephthalate) composites

Mechanical, thermal and dynamic-mechanical studies of functionalized halloysite nanotubes reinforced polypropylene composites

Contact Info

Product

Resources

About

Effect of functionalized SiO ₂ toward proton conductivity of composite membranes for PEMFC application

Effect of functionalized SiO ₂ toward proton conductivity of composite membranes for PEMFC application