Calculation of thermodynamic and kinetic parameters of dehydrochlorination reactions of chlorinated hydrocarbons

Kovařı́k, Pavel; Valko, L.; Gatial, A.

doi:10.1135/cccc19773265

Cited by 3 publications

(4 citation statements)

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“…Besides, researchers measured constant rate value for the Irganox 1010 and HCl reaction and showed that antioxidants could react with HCl in the DHC process. [ 12 ]…”

Section: Resultsmentioning

confidence: 99%

“…Besides, researchers measured constant rate value for the Irganox 1010 and HCl reaction and showed that antioxidants could react with HCl in the DHC process. [12] T A B L E 4 Response Synergistic effect examination shows color development in case of applying a combination of acetylacetonate complex and CaSt 2 . Metal acetylacetonate complexes act as short-term co-stabilizers and improve the initial color stability.…”

Section: Comparison Of the O-mcs And Cast 2 /Znst 2 Stabilizersmentioning

confidence: 99%

“…and antioxidants. [11][12][13][14][15] Also, if these additives were not used in proper amounts, they would be ineffective or even had adverse effects on the thermal stability of the PVC compounds. Therefore, it is very important to investigate the optimum amounts of these substances, in order to reach the maximum heat stability using certain dosages of multicomponent stabilizers (MCSs) that have not been explored yet.…”

Section: Introductionmentioning

confidence: 99%

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Effect of zeolitic metal–organic framework on thermal, mechanical, and electrical properties of Ca/Zn‐stabilized polyvinyl chloride

Shariatmadari

Kalaee

Khajavi

et al. 2021

Vinyl Additive Technology

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In order to enhance the heat stability of polyvinyl chloride (PVC), several heat stabilizing parameters such as metal content, antioxidant percentage, primary‐to‐secondary antioxidant ratios, stearic‐to‐acetylacetonate ratio, the amounts of pentaerythritol and β‐diketone were studied using oven and Congo red tests. Results indicated that the percentage contribution of the calcium‐to‐zinc molar ratio in the static heat stability was 60.78%. Due to the synergistic effects of the calcium/zinc stabilizer and the zeolitic metal–organic framework (MOF) as an effective co‐stabilizer, the heat stability was increased from 109 to 148 min. The EDX analysis was carried out to determine the mechanism of HCl gas absorption by the zeolitic imidazolate framework‐8 (ZIF‐8) existing in the PVC compound. Furthermore, the Ca/Zn thermal stabilizer showed poor electrical insulating properties, but the ZIF‐8 improved electrical resistivity of the PVC compounds. Volume resistivity of ZIF‐8 was significantly higher than that of the commonly used Ca/Zn stabilizers. Dynamic mechanical thermal analysis and tensile test of the PVC compound containing the ZIF‐8 showed increased Tg and enhanced toughness.

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“…Besides, researchers measured constant rate value for the Irganox 1010 and HCl reaction and showed that antioxidants could react with HCl in the DHC process. [ 12 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Comparison Of the O-mcs And Cast 2 /Znst 2 Stabilizersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of zeolitic metal–organic framework on thermal, mechanical, and electrical properties of Ca/Zn‐stabilized polyvinyl chloride

Shariatmadari

Kalaee

Khajavi

et al. 2021

Vinyl Additive Technology

View full text Add to dashboard Cite

show abstract

“…The high toxicity of lead salts, some metal carboxylates, and some organo‐tin compounds results in serious environmental problems. Calcium/zinc stabilizers, known as nontoxic commercial stabilizers, are usually used in conjunction with epoxy co‐stabilizers without losing their nontoxic properties . Mohamed et al studied on the thermal stabilization efficiency of barbituric acid (BA) and thiobarbituric acid (TBA).…”

Section: Introductionmentioning

confidence: 99%

Effect of epoxy resin on thermal, dynamic, and mechanical properties of rigid poly(vinyl chloride)

Miri

Ehsani

Khonakdar

et al. 2018

Vinyl Additive Technology

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This work is concerned with the effect of an epoxy resin on the properties of rigid poly(vinyl chloride) (PVC). The epoxy resin concentrations of 0, 1, 2, 4, and 6 phr were used to prepare PVC/epoxy polymer blends and the viscoelastic behavior of the blends was investigated by dynamic mechanical thermal analysis and rheometry test. The results revealed that the low molecular weight epoxy resin did not greatly affect the viscoelastic properties of PVC. From the morphological point of view, the smallest droplet size of epoxy dispersed in the polymer blends was found in the sample with 1 phr epoxy resin, and the largest one was for the sample with 6 phr epoxy. The thermal properties of PVC/epoxy blends were investigated using differential scanning calorimetry and thermogravimetric analysis, as well. According to our research, the initial decomposition temperature of PVC was increased about 6°C by the incorporation of epoxy resin. The results of tensile test showed that the addition of epoxy resin decreased the elongation‐at‐break of PVC about 50% in the samples without calcium carbonate and about 25% in the samples containing calcium carbonate. Moreover, the failure mode of PVC was changed from a ductile fracture mode to a brittle fracture mode with the addition of epoxy resin. J. VINYL ADDIT. TECHNOL., 25:E72–E79, 2019. © 2018 Society of Plastics Engineers

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Kinetic study of thermal dehydrochlorination of poly(vinyl chloride) in the presence of oxygen

Valko

Klein

Kovařı́k

et al. 2001

European Polymer Journal

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Calculation of thermodynamic and kinetic parameters of dehydrochlorination reactions of chlorinated hydrocarbons

Cited by 3 publications

References 0 publications

Effect of zeolitic metal–organic framework on thermal, mechanical, and electrical properties of Ca/Zn‐stabilized polyvinyl chloride

Effect of zeolitic metal–organic framework on thermal, mechanical, and electrical properties of Ca/Zn‐stabilized polyvinyl chloride

Effect of epoxy resin on thermal, dynamic, and mechanical properties of rigid poly(vinyl chloride)

Kinetic study of thermal dehydrochlorination of poly(vinyl chloride) in the presence of oxygen

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