Thermal degradation kinetics of poly(trimethylol propane triacrylate)/poly(hexane diol diacrylate) interpenetrating polymer network

Goswami, Ankur; Srivastava, Geetika; Umarji, A.M.; Madras, Giridhar

doi:10.1016/j.tca.2012.08.006

Cited by 22 publications

(14 citation statements)

References 30 publications

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“…At the same time, the reaction conversion extent is decreased due to the increase of heating rate. This is in accordance with the Goswami et al [25].…”

Section: Non-isothermal Degradation Kineticssupporting

confidence: 93%

“…Hence, the isoconversional method is also known as model-free methods [24]. In the present investigation, the researchers followed the Goswami et al study [25]. The activation energy can also be determined by an integral form of the isoconversional methods such as Kissinger-Akahira-Sunose (KAS) method.…”

Section: 5e Model-free Methodsmentioning

confidence: 99%

“…At the maximum α-value, the E a value varies between 55 and 112 kJ mol −1 . Recently, Goswami et al [25] explained that the increase in activation energy was attributed to the rate-limiting step of random chain session. The results and discussion of the present investigation coincide with Goswami et al publications.…”

Section: 7a Differential Isoconversional Methodsmentioning

confidence: 99%

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Synthesis, characterisation and non-isothermal degradation kinetics of novel poly(mono ethylene glycol dimethacrylate-co-4-aminobenzoate)

Jancirani¹,

Kohila²,

Meenarathi³

et al. 2016

Bull Mater Sci

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Synthesis of a novel co-polymer made by the addition polymerisation between MEGDMA and 4-AB by aza-Michael addition (AMA) polymerisation method is a fascinating field of research. The present investigation yielded a hazardous metal catalyst-free and toxic solvent-free methodology. The AMA polymerisation was carried out at five different [M 1 /M 2 ] values under N 2 atmosphere at 100 • C for 2 h. Thus, obtained co-polymer was characterized by Fourier transform infrared spectroscopy, UV-visible reflectance spectroscopy, X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis and scanning electron microscopy (SEM). The SEM image confirmed the formation of polymer nanoparticles. The non-isothermal degradation kinetics was followed with four different models, such as Flynn-Wall-Ozawa, Auggis-Bennet, Kissinger and Friedman method. Among the models used, the Kissinger method yielded the lowest degradation kinetics. The degradation kinetics of the co-polymer was followed with the help of model-free methods. Moreover, it was critically compared with the literature.

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“…At the same time, the reaction conversion extent is decreased due to the increase of heating rate. This is in accordance with the Goswami et al [25].…”

Section: Non-isothermal Degradation Kineticssupporting

confidence: 93%

Section: 5e Model-free Methodsmentioning

confidence: 99%

Section: 7a Differential Isoconversional Methodsmentioning

confidence: 99%

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Synthesis, characterisation and non-isothermal degradation kinetics of novel poly(mono ethylene glycol dimethacrylate-co-4-aminobenzoate)

Jancirani¹,

Kohila²,

Meenarathi³

et al. 2016

Bull Mater Sci

View full text Add to dashboard Cite

show abstract

“…However, the reaction extent decreased while increasing the heating rate. This observation is consistent with the report of Goswami et al The variation of α with temperature is obvious from the plot of dα/dt against temperature (Figure F‐J). The figure shows that that the derivative of reaction extent increased with increasing heating rate.…”

Section: Resultssupporting

confidence: 93%

Enhancement in thermal, mechanical and electrical properties of novel PVA nanocomposite embedded with SrO nanofillers and the analysis of its thermal degradation behavior by nonisothermal approach

Selvi

Parthasarathy

Mahalakshmi³

et al. 2019

Polymer Composites

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Effect of SrO nanofillers on the physical and chemical properties of newly prepared PVA nanocomposites was investigated in‐depth in this article. The structure of SrO nanopowder and PVA nanocomposites were analyzed using FTIR for surface chemistry and XRD for crystallographic nature. The extent of dispersion and particle size of SrO nanopowders were obtained from TEM micrographs. The average particle size of the SrO nanopowder was 57 nm. The uniformly dispersed SrO nanofillers in the host PVA matrix were observed from the TEM micrographs. The prepared PVA nanocomposites displayed a high absorption in the UV region. The thermal stability of PVA nanocomposites was enhanced after the addition of SrO nanofillers. The nonisothermal degradation study was carried out using different kinetic models for the prepared PVA nanocomposites. The Young's modulus (Y) and tensile strength of the PVA nanocomposites were higher than that of the pristine PVA. The DC conductivity of PVA was also increased when the PVA was embedded with the SrO nanoparticles. Highlights The novel PVA nanocomposites embedded with SrO nanofillers were prepared by the solution casting method. The band gap of PVA was decreased gradually while increasing the concentration of SrO nanofillers. The thermal degradation of polymer composites was studied under nonisothermal heating using several kinetic models. The thermal stability of PVA was enhanced after the addition of SrO nanofillers. The electrical and mechanical Properties of PVA nanocomposites were also improved.

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“…The reaction extent was decreased with the increasing heating rates. This is in good agreement with Goswami et al . The plot of dα / dt versus temperature was drawn to further confirm the variation of reaction extent as a function of temperature (Fig.…”

Section: Resultsmentioning

confidence: 99%

Optical, thermal, mechanical properties, and non‐isothermal degradation kinetic studies on PVA/CuO nanocomposites

Selvi

Mahalakshmi²,

Parthasarathy

et al. 2019

Polymer Composites

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The CuO nanoparticle doped poly(vinyl alcohol) (PVA) nanocomposite films were prepared by the solution casting method. The structure of the prepared CuO nanoparticles and PVA nanocomposite films were confirmed by FTIR spectroscopy and XRD. The (101) crystal plane of PVA was observed at 19.8 in XRD. The size of the CuO nanoparticles was determined as 20 nm using Scherrer's formula. It was further confirmed with HRTEM. The surface morphology of the nanocomposite films was investigated using SEM. The optical properties of the prepared CuO nanoparticles and PVA nanocomposite films were analyzed by UV-Visible spectroscopy. The band gap of PVA was decreased after the incorporation of CuO in PVA. The thermal stability of the pure PVA and its nanocomposites was examined using TGA to assess their thermal degradation temperature at five different heating rates. The thermal stability of PVA nanocomposites was increased as compared with pure PVA. The non-isothermal degradation kinetic studies were also carried out to determine the energy of activation (E a ) for the degradation process using four different kinetic models. The tensile strength and Young's modulus of PVA nanocomposite films were notably increased with the increasing concentration of CuO nanoparticles. POLYM. COMPOS., 40:3737-3748, 2019. POLYMER COMPOSITES-2019 FIG. 4. HRTEM image of (a) CuO nanoparticles, (b) SAED pattern of CuO, and (c) HRTEM image of 6 wt% CuO loaded PVA nanocomposites system. [Color figure can be viewed at wileyonlinelibrary.com]

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Thermal degradation kinetics of poly(trimethylol propane triacrylate)/poly(hexane diol diacrylate) interpenetrating polymer network

Cited by 22 publications

References 30 publications

Synthesis, characterisation and non-isothermal degradation kinetics of novel poly(mono ethylene glycol dimethacrylate-co-4-aminobenzoate)

Synthesis, characterisation and non-isothermal degradation kinetics of novel poly(mono ethylene glycol dimethacrylate-co-4-aminobenzoate)

Enhancement in thermal, mechanical and electrical properties of novel PVA nanocomposite embedded with SrO nanofillers and the analysis of its thermal degradation behavior by nonisothermal approach

Optical, thermal, mechanical properties, and non‐isothermal degradation kinetic studies on PVA/CuO nanocomposites

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