Hydrolytic and thermal oxidative degradation behavior of thermotropic aromatic–aliphatic copolyesters

2016 ◽  
Vol 128 (2) ◽  
pp. 1067-1076 ◽  
Author(s):  
Peng Wei ◽  
Yanping Wang ◽  
Yumin Xia ◽  
Yong He ◽  
Yimin Wang
Keyword(s):  
Oxidative Degradation ◽  
Thermal Oxidative Degradation ◽  
Degradation Behavior

Effect of alkylated diphenylamine on thermal-oxidative degradation behavior of poly-α-olefin

2015 ◽  
Vol 69 (7) ◽  
Author(s):  
Mian-Ran Chao ◽  
Wei-Min Li ◽  
Li-Li Zhu ◽  
Hai-Hong Ma ◽  
Xiao-Bo Wang
Keyword(s):  
Activation Energy ◽  
Oxidative Stability ◽  
Oxidative Degradation ◽  
Thermal Oxidative Degradation ◽  
Degradation Behavior ◽  
Thermal Oxidative Stability ◽  
Zinc Dialkyl Dithiophosphate ◽  
Dialkyl Dithiophosphate

AbstractAn oil-soluble antioxidant, alkylated diphenylamine (ADPA), was prepared by alkylation of diphenylamine. The influence of ADPA on the thermal-oxidative stability of poly-α-olefin (PAO8) was evaluated by thermogravimetry (TG). For comparison, the thermal-oxidative stability of PAO8 with zinc dialkyl dithiophosphate (ZDDP) was also investigated. Activation energy (E

Thermal Oxidative Degradation Behavior of Fluorinated Thermotropic Liquid Crystal Copolyesters

2015 ◽  
Vol 1088 ◽  
pp. 343-347
Author(s):  
Peng Wei ◽  
Shuo Han Huang ◽  
Yan Ping Wang ◽  
Yi Min Wang
Keyword(s):  
Liquid Crystal ◽  
Oxidative Degradation ◽  
Thermal Oxidative Degradation ◽  
Degradation Behavior ◽  
Molar Percentage ◽  
Good Thermal Stability ◽  
Thermotropic Liquid Crystal ◽  
Air Atmosphere ◽  
Degradation Activation Energy ◽  
Bisphenol Af

In this study, the thermal oxidative degradation behavior of thermotropic liquid crystal copolyesters P-BPAFx containing 2.5-10 mol% bisphenol AF unit were evaluated by thermogravimetric analysis (TGA) technique under air atmosphere and the degradation activation energy (E) was obtained from Kissinger and Kissinger-Akahira-Sunose (KAS) method. The degradation behavior of copolyester are strongly dependent on the molar percentage of BPAF unit. Results showed that the E values obtained by the two methods increase first and then decrease slightly with increasing the BPAF unit and follow the order P-BPAF5.0< P-BPAF10<P-BPAF2.5, indicating P-BPAF2.5 has good thermal stability. The reason for this phenomenon was discussed in detail in the text.

Thermal-oxidative degradation of a styrene-butadienestyrene rubber graft copolymer

1968 ◽  
Vol 10 (11) ◽  
pp. 2870-2879 ◽  
Author(s):  
V.V. Rode ◽  
Yu.P. Novichenko ◽  
S.R. Rafikov
Keyword(s):  
Graft Copolymer ◽  
Oxidative Degradation ◽  
Thermal Oxidative Degradation

Thermal and thermal-oxidative degradation of polycyanates

1974 ◽  
Vol 16 (1) ◽  
pp. 15-23 ◽  
Author(s):  
V.V. Korshak ◽  
P.N. Gribkova ◽  
A.V. Dmitrenko ◽  
A.G. Puchin ◽  
V.A. Pankratov ◽  
...  
Keyword(s):  
Oxidative Degradation ◽  
Thermal Oxidative Degradation
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