Thermal stability and glass transition behavior of PANI/γ-Al2O3 composites

Qi, Yanlong; Xu, Fen; -J., H.; Sun, Ling; Zhang, J.; Jiang, Tianyue

doi:10.1007/s10973-006-8298-3

Cited by 36 publications

(11 citation statements)

References 24 publications

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“…Microwave absorbing sheet was achieved by Folgueras et al 9 when blended doped polyaniline with silicone rubber. Thermal stability and glass transition temperature were found to be dependent on the type and amount of the inorganic nanoparticles in composites containing aluminium oxide and multi-walled carbon nanotube [10][11][12] . PAni nanofibers doped with several inorganic/organic acids were synthesized by interfacial polymerization being the morphology, thermal stability and electrical conductivity dependent on the dopant chemical nature 13 .…”

Section: Introductionmentioning

confidence: 99%

Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics

et al. 2011

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In order to study the influence of different sulfonation routes on its thermal and structural properties sulfonated polyaniline (SPAni) was prepared. FT-IR revealed that the formation of PAni salt or ring sulfonation depends on the route. UV-visible spectra pointed out that the level of the PAni protonation was dependent on the sulfonation route. A new approach was given for TG/DTG and DSC results correlating different energy levels with the distinguished sulfonation routes. The TG/DTG degradation steps and the amount of the released material corroborated the structural differences of the polyanilines. For each DSC first regime of heating, a broad and intense peak (from -30 to 250 °C) with different level of energy was noticed. That peak could be ascribed to the multiple relaxations and breaking of the PAni intra and inter hydrogen bonds after sulfonation.

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Section: Introductionmentioning

confidence: 99%

Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics

et al. 2011

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“…31 Ding reported that the T g of pure PANI (base form) was approximately 250 o C 32 and Qi found that it was approximately 163.19 o C in the presence of HCl as a dopant. 33 This difference might be due to the different crosslinking degree of the PANI chains. For the PANI-PS/GO core-shell microsphere composite, T g was shifted to 107.9 o C, showing an approximate 3 o C increase compared to the PANI-PS, as shown in Figure 7(c).…”

Section: Resultsmentioning

confidence: 99%

Polyaniline nanofiber-coated polystyrene/graphene oxide core-shell microsphere composites

2011

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A simple method was used to synthesize the polyaniline nanofiber-coated polystyrene/graphene oxide (PANI-PS/GO) core shell composite using a solution mixing process. GO could be easily coated on PANI-coated PS to form a PANI-PS/GO core shell structure through the ring-opening reaction of the epoxide groups in the GO sheets with amine groups in the PANI nanofibers. The existence of PANI in the PS and PS/GO core shell composite was confirmed by the appearance of a new peak in the photoelectron spectroscopy and energy-dispersive X-ray spectroscopy results assigned to the nitrogen band. Thermal investigation showed that the addition of GO to the PANI-coated PS increased the glass transition temperature of the PANI-PS/GO composites. The thermal stability of the composites was also improved compared to that of neat PS. Electrical conductivity investigation using a four-probe resistivity measurement system showed that PANI addition to the composite not only enhanced the interfacial interaction but also improved the electrical conductivity of the composite. The increased electrical conductivity of the final composite may enable potential electronic applications.

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“…And a mechanical cooling system was used for the experimental measurement. The temperature scale of the instrument was initially calibrated in the standard DSC mode, using the extrapolated onset temperatures of the melting of indium (429.75 K) as described in our previous papers [29][30][31]. The energy scale was calibrated with the heat of fusion of indium (28.45 J g -1 ).…”

Section: Heat Capacity Measurementmentioning

confidence: 99%

“…Temperature modulated differential scanning calorimetry (TMDSC) is one of easier and more accurate methods for determining heat capacity, and this method has been greatly developed for directly determining heat capacities for various materials isothermally and non-isothermally [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Exceptional thermal stability and thermodynamic properties of lithium based metal–organic framework

Jiang

Song

Jiao

et al. 2010

J Therm Anal Calorim

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A three-dimensional lithium-based metalorganic framework Li 2 (2,6-NDC) (2,6-NDC = 2,6-naphthalene dicarboxylate) has been synthesized solvothermally and characterized by X-ray powder diffraction, elemental analysis, FT-IR spectroscopy, thermogravimetry and mass spectrometer analysis (TG-MS). The framework has exceptional stability and is stable to 863 K. The thermal decomposition characteristic of this compound was investigated through the TG-MS from 293 to 1250 K. The molar heat capacity of the compound was measured by temperature modulated differential scanning calorimetry (TMDSC) over the temperature range from 195 to 670 K for the first time. The thermodynamic parameters such as entropy and enthalpy versus 298.15 K based on the above molar heat capacity were calculated.

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Thermal stability and glass transition behavior of PANI/γ-Al2O3 composites

Cited by 36 publications

References 24 publications

Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics

Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics

Polyaniline nanofiber-coated polystyrene/graphene oxide core-shell microsphere composites

Exceptional thermal stability and thermodynamic properties of lithium based metal–organic framework

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