Thermal Decomposition Mechanisms oftert-Alkyl Peroxypivalates Studied by the Nitroxide Radical Trapping Technique

2000 ◽  
Vol 65 (1) ◽  
pp. 16-23 ◽  
Author(s):  
Tomoyuki Nakamura ◽  
W. Ken Busfield ◽  
Ian D. Jenkins ◽  
Ezio Rizzardo ◽  
San H. Thang ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Nitroxide Radical ◽  
Radical Trapping ◽  
Decomposition Mechanisms

Thermal Decomposition Mechanisms of the Methoxyphenols: Formation of Phenol, Cyclopentadienone, Vinylacetylene, and Acetylene

2011 ◽  
Vol 115 (46) ◽  
pp. 13381-13389 ◽  
Author(s):  
Adam M. Scheer ◽  
Calvin Mukarakate ◽  
David J. Robichaud ◽  
Mark R. Nimlos ◽  
G. Barney Ellison
Keyword(s):  
Thermal Decomposition ◽  
Decomposition Mechanisms

Thermal decomposition mechanisms of hafnium and zirconium silicates at the atomic scale

2005 ◽  
Vol 97 (11) ◽  
pp. 114911 ◽  
Author(s):  
S. Monaghan ◽  
J. C. Greer ◽  
S. D. Elliott
Keyword(s):  
Thermal Decomposition ◽  
Atomic Scale ◽  
Decomposition Mechanisms

ChemInform Abstract: Kinetics of Nitroxide Radical Trapping. Part 1. Solvent Effects.

ChemInform ◽  
2010 ◽  
Vol 23 (39) ◽  
pp. no-no
Author(s):  
A. L. J. BECKWITH ◽  
V. W. BOWRY ◽  
K. U. INGOLD
Keyword(s):  
Solvent Effects ◽  
Nitroxide Radical ◽  
Radical Trapping ◽  
Kinetics Of

Initiation Processes in Copolymerization Studied by the Nitroxide Radical-Trapping Technique: Ethyl Vinyl Ether and Acrylonitrile

1997 ◽  
Vol 50 (1) ◽  
pp. 1 ◽  
Author(s):  
W. Ken Busfield ◽  
W. Ken Busfield ◽  
Ian D. Jenkins ◽  
Ian D. Jenkins ◽  
Michael J. Monteiro ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Vinyl Ether ◽  
Nitroxide Radical ◽  
Ethyl Vinyl Ether ◽  
Initiation Mechanism ◽  
Ethyl Vinyl ◽  
Radical Trapping ◽  
Selective Interaction ◽  
End Groups ◽  
Nitroxide Free Radical

The nitroxide free-radical trapping technique has been applied to an investigation of the initiation mechanism of the copolymerization of ethyl vinyl ether and acrylonitrile initiated by t-butoxyl radicals. In addition to a range of products normally produced from reactions with individual monomers, four new trapped products each involving both monomers have been observed. These arise because the strongly electron-accepting acrylonitrile reacts so fast with the strongly nucleophilic ethyl vinyl ether radical end groups that the reaction competes successfully with radical trapping. t-Butoxyl radicals react 3-6 times faster with ethyl vinyl ether than with acrylonitrile depending on solvent, illustrating the strong electrophilic nature of the t-butoxyl radicals. Reactions carried out in non-olefinic solvents show that polarity is not a major factor in the solvent e®ect. It is more likely to be due to selective interaction of one monomer with the radical end enhancing its electrophilic nature. A similar e®ect is caused by a hydrogen-bonding solvent.

Investigation on Thermal Decomposition Kinetics of Ulipristal Acetate (Form B)

2013 ◽  
Vol 791-793 ◽  
pp. 260-264
Author(s):  
Rong Rong Lei ◽  
Zuo Liang Sha ◽  
Liang Zhu ◽  
Li Bin Yang ◽  
Yan Fei Wang
Keyword(s):  
Thermal Decomposition ◽  
Differential Method ◽  
Decomposition Kinetics ◽  
Thermal Decomposition Kinetics ◽  
Experimental Result ◽  
Ulipristal Acetate ◽  
Isothermal Thermogravimetry ◽  
Decomposition Mechanisms ◽  
Kinetics Of ◽  
Acetate Form

Non-isothermal thermogravimetry analysis was applied to study the thermal decomposition kinetics of ulipristal acetate (form B). According to the experimental result, ulipristal acetate (form B) decomposed included three steps. Based on different kinetics function of corresponding thermal decomposition mechanisms and experimental data of ulipristal acetate (form B), decomposition mechanisms of three steps of ulipristal acetate (form B) were analyzed by differential method. According to fitting results of different mechanism functions, decomposition mechanisms of three steps of ulipristal acetate (form B) were determined, and three corresponding thermal decomposition dynamic functions were also obtained.

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