The oxidation of polymethyl acrylate and its model compound by molecular oxygen in dark

Yu Ping Dong; Kun Yuan Qiu; Xin De Feng

The oxidation of polymethyl acrylate and its model compound by molecular oxygen in dark

Yu Ping Dong, Kun Yuan Qiu, Xin De Feng

Peking University

Research output: Contribution to journal › Article › peer-review

Abstract

The oxidation of polymethyl acrylate(PMA) and its model compound methyl 2-methylbutyrate with molecular oxygen in dark have been studied. The experimental results showed that the two esters could form a contact charge transfer complex(CCT) with O₂ respectively. When O₂ was bubbled to solution of ester and kept for several hours and then N₂ was bubbled to the solution again, the UV absorption of the CCT could not completely disappear and a remaining peak was formed, and the strength of the remaining peak increased with the increasing of time. It indicated that the new compound was produced, and CCT played an important role in the oxidation of the two esters with O₂. Furthermore from IR and NMR spectra it was found that the hydroperoxide was formed at the α-C of methyl 2-methylbutyrate. As well as the unsaturated methyl 2-methylbutenate which was produced in the further oxidation of methyl 2-methylbutyrate with O₂.

Original language	English
Pages (from-to)	x36-1795
Journal	Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities
Volume	17
Issue number	11
Publication status	Published - 1996
Externally published	Yes

Keywords

2-methylbutyrate(MMB)
Contact charge transfer complex(CCT)
Initial oxidation
Polymethyl acrylate(PMA)

Cite this

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title = "The oxidation of polymethyl acrylate and its model compound by molecular oxygen in dark",

abstract = "The oxidation of polymethyl acrylate(PMA) and its model compound methyl 2-methylbutyrate with molecular oxygen in dark have been studied. The experimental results showed that the two esters could form a contact charge transfer complex(CCT) with O2 respectively. When O2 was bubbled to solution of ester and kept for several hours and then N2 was bubbled to the solution again, the UV absorption of the CCT could not completely disappear and a remaining peak was formed, and the strength of the remaining peak increased with the increasing of time. It indicated that the new compound was produced, and CCT played an important role in the oxidation of the two esters with O2. Furthermore from IR and NMR spectra it was found that the hydroperoxide was formed at the α-C of methyl 2-methylbutyrate. As well as the unsaturated methyl 2-methylbutenate which was produced in the further oxidation of methyl 2-methylbutyrate with O2.",

keywords = "2-methylbutyrate(MMB), Contact charge transfer complex(CCT), Initial oxidation, Polymethyl acrylate(PMA)",

author = "Dong, {Yu Ping} and Qiu, {Kun Yuan} and Feng, {Xin De}",

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TY - JOUR

T1 - The oxidation of polymethyl acrylate and its model compound by molecular oxygen in dark

AU - Dong, Yu Ping

AU - Qiu, Kun Yuan

AU - Feng, Xin De

PY - 1996

Y1 - 1996

N2 - The oxidation of polymethyl acrylate(PMA) and its model compound methyl 2-methylbutyrate with molecular oxygen in dark have been studied. The experimental results showed that the two esters could form a contact charge transfer complex(CCT) with O2 respectively. When O2 was bubbled to solution of ester and kept for several hours and then N2 was bubbled to the solution again, the UV absorption of the CCT could not completely disappear and a remaining peak was formed, and the strength of the remaining peak increased with the increasing of time. It indicated that the new compound was produced, and CCT played an important role in the oxidation of the two esters with O2. Furthermore from IR and NMR spectra it was found that the hydroperoxide was formed at the α-C of methyl 2-methylbutyrate. As well as the unsaturated methyl 2-methylbutenate which was produced in the further oxidation of methyl 2-methylbutyrate with O2.

AB - The oxidation of polymethyl acrylate(PMA) and its model compound methyl 2-methylbutyrate with molecular oxygen in dark have been studied. The experimental results showed that the two esters could form a contact charge transfer complex(CCT) with O2 respectively. When O2 was bubbled to solution of ester and kept for several hours and then N2 was bubbled to the solution again, the UV absorption of the CCT could not completely disappear and a remaining peak was formed, and the strength of the remaining peak increased with the increasing of time. It indicated that the new compound was produced, and CCT played an important role in the oxidation of the two esters with O2. Furthermore from IR and NMR spectra it was found that the hydroperoxide was formed at the α-C of methyl 2-methylbutyrate. As well as the unsaturated methyl 2-methylbutenate which was produced in the further oxidation of methyl 2-methylbutyrate with O2.

KW - 2-methylbutyrate(MMB)

KW - Contact charge transfer complex(CCT)

KW - Initial oxidation

KW - Polymethyl acrylate(PMA)

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SN - 0251-0790

VL - 17

SP - x36-1795

JO - Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities

JF - Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities

IS - 11

ER -

The oxidation of polymethyl acrylate and its model compound by molecular oxygen in dark

Abstract

Keywords

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