On the degradation kinetics of poly(ethylene terephthalate) (PET)/poly(methyl methacrylate) (PMMA) blends in dynamic thermogravimetry

2014 ◽  
Vol 104 ◽  
pp. 28-32 ◽  
Author(s):  
S.M. Al-Salem ◽  
A.R. Khan
Keyword(s):  
Methyl Methacrylate ◽  
Ethylene Terephthalate ◽  
Degradation Kinetics ◽  
Poly Methyl Methacrylate ◽  
Dynamic Thermogravimetry ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Kinetics Of ◽  
Pmma Blends

scholarly journals Rheological, mechanical and morphological properties of poly(methyl methacrylate)/poly(ethylene terephthalate) blend with dual reactive interfacial compatibilization

Polímeros ◽  
2015 ◽  
Vol 25 (5) ◽  
pp. 451-460 ◽  
Author(s):  
Juciklécia da Silva Reinaldo ◽  
Maria Carolina Burgos Costa do Nascimento ◽  
Edson Noriyuki Ito ◽  
Elias Hage Junior
Keyword(s):  
Methyl Methacrylate ◽  
Ethylene Terephthalate ◽  
Morphological Properties ◽  
Poly Methyl Methacrylate ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Effect of nucleating agents on the non‐isothermal crystallization and degradation kinetics of poly(ethylene terephthalate)

2020 ◽  
Author(s):  
Anbarasan Thamizhlarasan ◽  
Balakrishnan Meenarathi ◽  
Vellaichamy Parthasarathy ◽  
Asirvatham Jancirani ◽  
Ramasamy Anbarasan
Keyword(s):  
Isothermal Crystallization ◽  
Ethylene Terephthalate ◽  
Degradation Kinetics ◽  
Nucleating Agents ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Kinetics Of

scholarly journals An absorbance method for analysis of enzymatic degradation kinetics of poly(ethylene terephthalate) films

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
En Ze Linda Zhong-Johnson ◽  
Christopher A. Voigt ◽  
Anthony J. Sinskey
Keyword(s):  
Enzyme Kinetics ◽  
Ethylene Terephthalate ◽  
Degradation Kinetics ◽  
Fast Method ◽  
Kinetic Measurements ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
And Function ◽  
Kinetics Of ◽  
Over Time

AbstractIncreased interest in poly(ethylene terephthalate) (PET)-degrading enzymes (PETases) have generated efforts to find mutants with improved catalytic activity and thermostability. Here, we present a simple and fast method to determine relative enzyme kinetics through bulk absorbance measurements of released products over time. A thermostable variant of PETase from Ideonella sakaiensis was engineered (R280A S121E D186H N233C S282C) with a denaturation temperature of 69.4 ± 0.3 °C. This was used to assess the method’s ability to determine relative enzyme kinetics across variants and reveal structure–function relationships. Measurements at 24 and 72 h at 400 nM of enzyme suggest that the mutations improved catalytic rates 5- to 7-fold. On the contrary, kinetic analyses of the thermostable variant and wild-type reveal different reaction trajectories despite similar maximum catalytic rates, resulting in higher product accumulation from the thermostable variant over time. The results of the assay support the necessity for kinetic measurements to determine relationships between sequence and function for IsPETase and other PET hydrolases.

scholarly journals A Microrheological Study of Poly(Methyl Methacrylate) Elastomer/Poly(Ethylene Terephthalate) (PMMAelast/PET) Blends

2017 ◽  
Vol 20 (suppl 2) ◽  
pp. 694-700 ◽  
Author(s):  
Juciklécia da Silva Reinaldo ◽  
Igor Zumba Damasceno ◽  
Marcelo Massayoshi Ueki ◽  
Edson Noriyuki Ito
Keyword(s):  
Methyl Methacrylate ◽  
Ethylene Terephthalate ◽  
Poly Methyl Methacrylate ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene
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