The non-oxidative thermal degradation of poly(iso-butyl methacrylate) and poly(sec-butyl methacrylate) was investigated by studying changes in the polymer residue. Due to the different number of β-hydrogens in their ester substituents, these two polymeric isomers behave differently when subjected to elevated temperatures. Poly(iso-butyl methacrylate) degrades quantitatively by depolymerisation with zip lengths of the same order of magnitude as those of poly(methyl methacrylate). Poly(sec-butyl methacrylate) degrades by a combined degradation mechanism of depolymerisation and de-esterification. De-esterification becomes a significant thermolysis route at temperatures higher than 240 ºC. .
Neoksidativna termička degradacija poli(iso-butil metakrilata) i poli(sec-butil metakrilata) ispitana je praćenjem promena u polimernom ostatku. Zbog različitog broja β-vodonika u estarskom supstituentu, ova dva polimerna izomera se različito ponašaju prilikom izlaganja povišenim temperaturama. Poli(iso-butil metakrilat) degradira kvantitativno depolimerizacijom do svog monomera sa kinetičkim dužinama depropagacije istog reda veličine kao kod degradacije poli(metil metakrilata). Poli(sec-butil metakrilat) degradira kombinovanim mehanizmom degradacije: depolimerizacijom i deesterifikacijom. Deestirifikacija postaje značajna reakcija termolize na temperaturama višim od 240 ºC. .
TY - JOUR
AU - Novaković, Katarina
AU - Katsikas, Lynne
AU - Popović, Ivanka
PY - 2000
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/309
AB - The non-oxidative thermal degradation of poly(iso-butyl methacrylate) and poly(sec-butyl methacrylate) was investigated by studying changes in the polymer residue. Due to the different number of β-hydrogens in their ester substituents, these two polymeric isomers behave differently when subjected to elevated temperatures. Poly(iso-butyl methacrylate) degrades quantitatively by depolymerisation with zip lengths of the same order of magnitude as those of poly(methyl methacrylate). Poly(sec-butyl methacrylate) degrades by a combined degradation mechanism of depolymerisation and de-esterification. De-esterification becomes a significant thermolysis route at temperatures higher than 240 ºC. .
AB - Neoksidativna termička degradacija poli(iso-butil metakrilata) i poli(sec-butil metakrilata) ispitana je praćenjem promena u polimernom ostatku. Zbog različitog broja β-vodonika u estarskom supstituentu, ova dva polimerna izomera se različito ponašaju prilikom izlaganja povišenim temperaturama. Poli(iso-butil metakrilat) degradira kvantitativno depolimerizacijom do svog monomera sa kinetičkim dužinama depropagacije istog reda veličine kao kod degradacije poli(metil metakrilata). Poli(sec-butil metakrilat) degradira kombinovanim mehanizmom degradacije: depolimerizacijom i deesterifikacijom. Deestirifikacija postaje značajna reakcija termolize na temperaturama višim od 240 ºC. .
PB - Serbian Chemical Society, Belgrade
T2 - Journal of the Serbian Chemical Society
T1 - The thermal degradation of poly(iso-butyl methacrylate) and poly(sec-butyl methacrylate)
T1 - Termička degradacija poli(iso-butil metakrilata) i poli(sec-butil metakrilata)
EP - 875
IS - 12
SP - 867
VL - 65
UR - https://hdl.handle.net/21.15107/rcub_technorep_309
ER -
@article{
author = "Novaković, Katarina and Katsikas, Lynne and Popović, Ivanka",
year = "2000",
abstract = "The non-oxidative thermal degradation of poly(iso-butyl methacrylate) and poly(sec-butyl methacrylate) was investigated by studying changes in the polymer residue. Due to the different number of β-hydrogens in their ester substituents, these two polymeric isomers behave differently when subjected to elevated temperatures. Poly(iso-butyl methacrylate) degrades quantitatively by depolymerisation with zip lengths of the same order of magnitude as those of poly(methyl methacrylate). Poly(sec-butyl methacrylate) degrades by a combined degradation mechanism of depolymerisation and de-esterification. De-esterification becomes a significant thermolysis route at temperatures higher than 240 ºC. ., Neoksidativna termička degradacija poli(iso-butil metakrilata) i poli(sec-butil metakrilata) ispitana je praćenjem promena u polimernom ostatku. Zbog različitog broja β-vodonika u estarskom supstituentu, ova dva polimerna izomera se različito ponašaju prilikom izlaganja povišenim temperaturama. Poli(iso-butil metakrilat) degradira kvantitativno depolimerizacijom do svog monomera sa kinetičkim dužinama depropagacije istog reda veličine kao kod degradacije poli(metil metakrilata). Poli(sec-butil metakrilat) degradira kombinovanim mehanizmom degradacije: depolimerizacijom i deesterifikacijom. Deestirifikacija postaje značajna reakcija termolize na temperaturama višim od 240 ºC. .",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "The thermal degradation of poly(iso-butyl methacrylate) and poly(sec-butyl methacrylate), Termička degradacija poli(iso-butil metakrilata) i poli(sec-butil metakrilata)",
pages = "875-867",
number = "12",
volume = "65",
url = "https://hdl.handle.net/21.15107/rcub_technorep_309"
}
Novaković, K., Katsikas, L.,& Popović, I.. (2000). The thermal degradation of poly(iso-butyl methacrylate) and poly(sec-butyl methacrylate). in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 65(12), 867-875.
https://hdl.handle.net/21.15107/rcub_technorep_309
Novaković K, Katsikas L, Popović I. The thermal degradation of poly(iso-butyl methacrylate) and poly(sec-butyl methacrylate). in Journal of the Serbian Chemical Society. 2000;65(12):867-875.
https://hdl.handle.net/21.15107/rcub_technorep_309 .
Novaković, Katarina, Katsikas, Lynne, Popović, Ivanka, "The thermal degradation of poly(iso-butyl methacrylate) and poly(sec-butyl methacrylate)" in Journal of the Serbian Chemical Society, 65, no. 12 (2000):867-875,
https://hdl.handle.net/21.15107/rcub_technorep_309 .
