The thermal degradation of poly(allyl methacrylate)

Zulfiqar, Shagufta; Piracha, Asifa; Masud, Khalid

doi:10.1016/0141-3910(95)00237-5

Cited by 21 publications

(15 citation statements)

References 5 publications

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“…As a result, formation of six‐membered anhydrides is obtained by intramolecular cyclization. The same result was observed for other polymethacrylates . A mass loss of about 45 wt % was also recorded during the second step of degradation of PDAEM that occurred over a temperature range 357–468 °C with a T max at around 425 °C.…”

Section: Resultssupporting

confidence: 81%

Preparation of poly (N,N‐dimethylaminoethyl methacrylate) (PDAEM) membranes: Application for water purification

Abdellaoui

Laoui

Cerbah

et al. 2018

J of Applied Polymer Sci

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The present work concerns a development of new membranes for performing ions separation. These membranes were prepared by solution casting followed by solvent evaporation, using a commercial cellulose triacetate (CTA), synthesized poly (N,Ndimethylaminoethyl methacrylate), macrocylic polyethers (15-crown-5 and Dibenzo-24-crown-8) as carrier and dioctylphtalate as plasticizer. Different Polymer Inclusion Membranes were characterized using physical and chemical techniques as well as Fourier transform infrared, thermogravimetric analysis, and scanning electron microscopy. Transport of lead and cadmium in aqueous solution has been studied using these systems. The selective separation of these membranes is accomplished by the presence of specific compounds, called carriers, in the membrane phase. The carriers are responsible to facilitate the transport of the target component across selective membranes. The influence of the membrane nature has been studied using some supports of different physical characteristics.

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Section: Resultssupporting

confidence: 81%

Preparation of poly (N,N‐dimethylaminoethyl methacrylate) (PDAEM) membranes: Application for water purification

Abdellaoui

Laoui

Cerbah

et al. 2018

J of Applied Polymer Sci

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“…The PAMA block decomposed at 280°C, the corresponding MS signal indicates the release of a propene-fragment (m/z = 41). [11] The degradation of the P2VP brush commenced at significantly higher temperatures (Ͼ 395°C) as indicated by a MS signal of pyridine (m/z = 79). [12] The small peak of the propene fragment observed at higher decomposition temperature (395°C) might either be attributed to a delayed release of PAMA due to a coating of P2VP at the core-shell transition zone or to a decomposition of the pyridine ring to a fragment of m/z = 41 as reported in the literature.…”

Section: P2vp-b-pama/apm Hybrid Nanowiresmentioning

confidence: 99%

Selective Template Removal by Thermal Depolymerization to Obtain Mesostructured Molybdenum Oxycarbide

Schieder

Lunkenbein

Bojer

et al. 2015

Zeitschrift anorg allge chemie

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The carbon content of mesostructured organic-inorganic hybrid material of a cylindrical block copolymer template of poly(2-vinylpyridine)-block-poly(allyl methacrylate) (P2VP-b-PAMA) and ammonium paramolybdate (APM) could be reduced by thermal depolymerization. By calcination in vacuo at 320 degrees C the PAMA core can be completely removed while the remaining P2VP brush preserves the mesostructure. The P2VP-APM composite can then be carburized in-situ to MoOxCy in a second pyrolysis step without any additional carbon source but P2VP. The molybdenum oxycarbide nanotubes obtained, form hierarchically porous non-woven structures, which were tested as catalyst in the decomposition of NH3. They proved to be catalytically active at temperatures above 450 degrees C. The activation energy was estimated from an Arrhenius Plot to be 127 kJmol(-1)

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“…During depolymerization, the distinctive feature is the absence of residues at high temperatures, i.e., all the degrading products, e.g., monomers, dimers, chain fragments, have essentially the same composition as the repeating unit 4, 5. In most cases, the polymer molecular weight will fall rapidly as degradation proceeds and often, but not invariably, there is only one stage of degradation as the temperature is gradually raised 6…”

Section: Introductionmentioning

confidence: 99%

Thermal decomposition kinetics of poly(nButMA‐b‐St) diblock copolymer synthesized by ATRP

Kurt

2009

J of Applied Polymer Sci

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The reaction mechanism of decomposition process and the kinetic parameters of the poly(n-butyl methacrylate-b-styrene), poly(nButMA-b-St), diblock copolymer synthesized by atom transfer radical polymerization (ATRP) were investigated by thermogravimetric analysis (TGA) at different heating rates. TGA curves showed that the thermal decomposition occurred in one stage. The apparent activation energies of thermal decomposition for copolymer, as determined by the Kissinger's, Flynn-Wall-Ozawa and Tang methods, which does not require knowledge of the reaction mechanism (RM), were 112.52, 116.54, and 113.41 kJ/mol, respectively. The experimental results were compared with master plots, in the range of the Doyle approximation. Analysis of experimental results suggests that in the conversion range studied, 3-18%, the actual RM is an A 2 sigmoidal type.

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The thermal degradation of poly(allyl methacrylate)

Cited by 21 publications

References 5 publications

Preparation of poly (N,N‐dimethylaminoethyl methacrylate) (PDAEM) membranes: Application for water purification

Preparation of poly (N,N‐dimethylaminoethyl methacrylate) (PDAEM) membranes: Application for water purification

Selective Template Removal by Thermal Depolymerization to Obtain Mesostructured Molybdenum Oxycarbide

Thermal decomposition kinetics of poly(nButMA‐b‐St) diblock copolymer synthesized by ATRP

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