Enhanced Polyester Degradation through Transesterification with Salicylates

2021 ◽  
Author(s):  
Hee Joong Kim ◽  
Marc A. Hillmyer ◽  
Christopher J. Ellison
Keyword(s):  
Polyester Degradation

scholarly journals The role of peroxyl radicals in polyester degradation – a mass spectrometric product and kinetic study using the distonic radical ion approach

2015 ◽  
Vol 17 (14) ◽  
pp. 9212-9221 ◽  
Author(s):  
B. D. Gervasoni ◽  
G. N. Khairallah ◽  
R. A. J. O'Hair ◽  
U. Wille
Keyword(s):  
Kinetic Study ◽  
Mass Spectrometric ◽  
Peroxyl Radicals ◽  
Structural Motifs ◽  
Polyester Degradation ◽  
Mass Spectrometric Techniques ◽  
Insight Into

Mass spectrometric techniques were employed to reveal detailed insight into the reaction of peroxyl radicals with structural motifs in polyesters.

scholarly journals Enthalpy-Entropy Compensation in Polyester Degradation Reactions

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Adam Al-Mulla
Keyword(s):  
Compensation Effect ◽  
Degradation Kinetics ◽  
Isokinetic Temperature ◽  
Heating Rates ◽  
Polybutylene Terephthalate ◽  
Degradation Reactions ◽  
Zone Ii ◽  
Polyester Degradation ◽  
Kinetics Of ◽  
Nonisothermal Conditions

In an earlier work the author had studied the degradation kinetics of polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), and polybutylene terephthalate (PBT) under nonisothermal conditions in air and N2at heating rates of 5, 10, 15, and 20°C/min. In this paper the kinetic degradation parameters of PET, PTT, and PBT were estimated using the Coats-Redfern method for two different weight loss regions ranging from 2–8% (Zone I) and 8–40% (Zone II). A comparative analysis of the enthalpy-entropy compensation effect for these polyesters in air and N2is presented. A linear relationship was found to exist between entropy and enthalpy values. The following criteria were applied to establish an enthalpy-entropy compensation effect and to check the presence of an isokinetic temperature: (a) Exner’s plot of logk3T1versus logk3T2, and (b) Krug et al. linear regression of ΔHversus ΔG.By the use of the latter two methods, varying isokinetic temperatures were obtained. These temperatures were not in the range of the experimental work conducted, indicating that these systems do not display compensation phenomena.

Activity of extracellular depolymerase secreted by Gliocladium solani strain during Bionolle polyester degradation

Polimery ◽  
2008 ◽  
Vol 53 (06) ◽  
pp. 465-470 ◽  
Author(s):  
SYLWIA LABUZEK ◽  
BOZENA NOWAK ◽  
JOLANTA PAJAK ◽  
GRAZYNA RYMARZ
Keyword(s):  
Polyester Degradation

Examination of toxicity of the products of Bionolle polyester degradation

Polimery ◽  
2008 ◽  
Vol 53 (05) ◽  
pp. 384-389 ◽  
Author(s):  
SYLWIA LABUZEK ◽  
JOLANTA PAJAK ◽  
BOZENA NOWAK ◽  
MARCIN SOLGA
Keyword(s):  
Polyester Degradation

scholarly journals Structural and Functional Studies ofAspergillus oryzaeCutinase: Enhanced Thermostability and Hydrolytic Activity of Synthetic Ester and Polyester Degradation

2009 ◽  
Vol 131 (43) ◽  
pp. 15711-15716 ◽  
Author(s):  
Zhiqiang Liu ◽  
Yuying Gosser ◽  
Peter James Baker ◽  
Yaniv Ravee ◽  
Ziying Lu ◽  
...  
Keyword(s):  
Hydrolytic Activity ◽  
Functional Studies ◽  
Synthetic Ester ◽  
Polyester Degradation
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