Thermal stability and degradation kinetics of novel organic/inorganic epoxy hybrid containing nitrogen/silicon/phosphorus by sol–gel method

Chiang, Chin‐Lung; Chang, Ri-Cheng; Chiu, Yie-Chan

doi:10.1016/j.tca.2006.11.013

Cited by 151 publications

(75 citation statements)

References 22 publications

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“…12 and 14 and following the procedure discussed above, the IPDT values of pure epoxy and epoxy/Sn composites for both the uncorrected and corrected TG curves at 208C/min have been calculated and shown in Table 2. The calculated IDPT value of epoxy resin 4788C has been found comparable to the already reported value 4648C [31] and a minor difference in results could be due to the difference in experimental conditions. The IPDT data of uncorrected epoxy/Sn composites' curves show higher stability; although, the actual stability induced by tin in epoxy ranges merely between 208C and 308C for epoxy/Sn4 vol% and epoxy/Sn27 vol% due to the little change in heat capacity of tin with temperature and mass.…”

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confidence: 83%

Thermal degradation mechanisms of epoxy composites filled with tin particles

et al. 2015

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This article reports an evaluation study of the thermal degradation mechanisms of electrically insulating and conducting epoxy/Sn composites by using solid-state kinetic approaches and structural characterizations.Comparison of the thermoanalytical data of epoxy/Sn composites with pure epoxy shows that the addition of tin in epoxy catalyzes the thermal degradation of epoxy and the catalytic ability of tin depends upon its contents in epoxy. Kinetic modeling of the phenomena elaborates the thermal behaviors of epoxy/Sn composites in terms of the comparison of their activation parameters and reaction models. Friedman's differential and ArshadMaaroufi's generalized linear integral isoconversional methods are used to obtain the variation in activation energies with the advancement of reaction. Advanced reaction model determination methodology is effectively employed to evaluate the reaction mechanisms of epoxy/Sn composites. Kinetic analysis suggests that tin increases the thermal degradation rate of epoxy by lowering the activation energy barrier of reaction. It is worth noticing that the parameters of the probable reaction model, i.e., Sest ak Berggren have been found nearly the same for pure epoxy and epoxy/Sn composites, revealing weak epoxy-tin interactions in the composites. The mechanistic information obtained by kinetic analysis fairly agrees with the scanning electron microscopy and X-ray diffraction results.

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confidence: 83%

Thermal degradation mechanisms of epoxy composites filled with tin particles

et al. 2015

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“…The final 16% loss between 400°C and 800°C is due to the condensation of silanol groups (Si-OH) to siloxane bonds (Si-O-Si) with the removal of water. The Thermo-gravimetric analysis of the synthesized silica nanoparticles is identical to that in the literatures [44][45][46][47]. The thermal behavior of different compositions within the studied Si-O-Zr system exhibited TGA curve of the silica-1% zirconia sample with lower thermal stability while silica modified with 3% zirconia showed higher thermal stability.…”

Section: Thermal Stability Of the Synthesized Silica Nanoparticlessupporting

confidence: 54%

Sol Gel Synthesis and Characterization of Zirconia Containing Hydrophobic Silica Nanoparticles

Ellateif¹,

Mitra²

2017

JAN

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Abstract. Hydrophobic mesoporous zirconia containing silica nanoparticles was synthesized via sol gel process. Silica sol was prepared and subsequently liquid modified with different proportions of zirconia. The effects of zirconia content on the silica textures and properties were studied. TGA results confirmed the development of hydrophobicity in zirconia containing silica nanoparticles. The synthesized nanoparticles were characterized by FTIR and XRF. The topography of silica particles changed as a function of zirconia content as evident from FESEM and TEM results. From XRD investigation, surface area measurement and pore size analysis it was observed that the synthesized silica was semi amorphous materials with very narrow pore diameter distribution as a function of zirconia content. From nitrogen physisorption studies mesoporous nature (type V) of the synthesized silica was noted. The synthesized pure silica possessed significant surface area while the zirconium content caused a reduction on the surface area of silica zirconium nanoparticles.

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“…The integral procedure decomposition temperature (IPDT) proposed by Doyle [20] has been correlated the volatile parts of polymeric materials and used for estimating the inherent thermal stability of polymeric materials [21][22]. The IPDT value were calculated by using our recent published research paper [23].…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Graft Copolymer (Guar Gum-G-Poly 2-Acrylamidoglycolic Acid): Synthesis, Swelling and Flocculation Behaviors

Pandey¹

2017

IJBBMB

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Abstract:The present paper reports the modification of guar gum through the grafting of 2-acrylamidoglycolic acid by free radical polymerization using an efficient potassium peroxydiphosphate/thioacetamide redox system in nitrogen atmosphere. The reaction conditions for maximum grafting have been optimized by varying the reaction variables including the concentration of 2-acrylamidoglycolic acid (5.3×10-2 mol dm ), guar gum (1 g dm −3 ) along with time duration (150 min) and temperature (35°C). Water swelling capacity and flocculation and studies of synthesized graft copolymer have been performed with respect to the parent polymer. The graft copolymer has been characterized by Fourier transform infrared spectroscopy and thermogravimetric analysis.

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Thermal stability and degradation kinetics of novel organic/inorganic epoxy hybrid containing nitrogen/silicon/phosphorus by sol–gel method

Cited by 151 publications

References 22 publications

Thermal degradation mechanisms of epoxy composites filled with tin particles

Thermal degradation mechanisms of epoxy composites filled with tin particles

Sol Gel Synthesis and Characterization of Zirconia Containing Hydrophobic Silica Nanoparticles

Graft Copolymer (Guar Gum-G-Poly 2-Acrylamidoglycolic Acid): Synthesis, Swelling and Flocculation Behaviors

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