Thermal degradation kinetics of poly(propylene carbonate) obtained from the copolymerization of carbon dioxide and propylene oxide

2003 ◽  
Vol 90 (4) ◽  
pp. 947-953 ◽  
Author(s):  
Binyuan Liu ◽  
Xiaojiang Zhao ◽  
Xianhong Wang ◽  
Fosong Wang
Keyword(s):  
Carbon Dioxide ◽  
Thermal Degradation ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
Degradation Kinetics ◽  
Thermal Degradation Kinetics ◽  
Poly Propylene ◽  
Kinetics Of

Thermal degradation kinetics of uncapped and end-capped poly(propylene carbonate)

2003 ◽  
Vol 80 (1) ◽  
pp. 141-147 ◽  
Author(s):  
Shuwen Peng ◽  
Yuxian An ◽  
Cheng Chen ◽  
Bin Fei ◽  
Yugang Zhuang ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Propylene Carbonate ◽  
Degradation Kinetics ◽  
Thermal Degradation Kinetics ◽  
Poly Propylene ◽  
Kinetics Of

Thermal degradation kinetics of morpholine for carbon dioxide capture

2020 ◽  
Vol 8 (3) ◽  
pp. 103814 ◽  
Author(s):  
Shaukat Ali Mazari ◽  
Rashid Abro ◽  
Abdul Waheed Bhutto ◽  
Idris M. Saeed ◽  
Brahim S. Ali ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Thermal Degradation ◽  
Degradation Kinetics ◽  
Carbon Dioxide Capture ◽  
Thermal Degradation Kinetics ◽  
Kinetics Of

Thermal degradation kinetics of poly(propylene succinate) prepared with the use of natural origin monomers

Polimery ◽  
2018 ◽  
Vol 63 (10) ◽  
pp. 700-707
Author(s):  
Paulina Parcheta ◽  
Iwona Koltsov ◽  
Ewa Głowinska ◽  
Janusz Datta
Keyword(s):  
Thermal Degradation ◽  
Degradation Kinetics ◽  
Thermal Degradation Kinetics ◽  
Natural Origin ◽  
Poly Propylene ◽  
Kinetics Of

Mechanic properties and thermal degradation kinetics of terpolymer poly(propylene cyclohexene carbonate)s

2008 ◽  
Vol 62 (17-18) ◽  
pp. 3294-3296 ◽  
Author(s):  
Qingyang Liu ◽  
Yingnan Zou ◽  
Yiling Bei ◽  
Guibin Qi ◽  
Yuezhong Meng
Keyword(s):  
Thermal Degradation ◽  
Degradation Kinetics ◽  
Thermal Degradation Kinetics ◽  
Poly Propylene ◽  
Kinetics Of

scholarly journals Thermal Degradation Kinetics and Modeling Study of Ultra High Molecular Weight Polyethylene (UHMWP)/Graphene Nanocomposite

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1597
Author(s):  
Iman Jafari ◽  
Mohamadreza Shakiba ◽  
Fatemeh Khosravi ◽  
Seeram Ramakrishna ◽  
Ehsan Abasi ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Molecular Weight ◽  
Thermal Degradation ◽  
High Molecular Weight ◽  
Degradation Kinetics ◽  
Graphene Nanosheets ◽  
Thermal Degradation Kinetics ◽  
Graphene Nanocomposites ◽  
Kinetics Of ◽  
Ultra High Molecular Weight

The incorporation of nanofillers such as graphene into polymers has shown significant improvements in mechanical characteristics, thermal stability, and conductivity of resulting polymeric nanocomposites. To this aim, the influence of incorporation of graphene nanosheets into ultra-high molecular weight polyethylene (UHMWPE) on the thermal behavior and degradation kinetics of UHMWPE/graphene nanocomposites was investigated. Scanning electron microscopy (SEM) analysis revealed that graphene nanosheets were uniformly spread throughout the UHMWPE’s molecular chains. X-Ray Diffraction (XRD) data posited that the morphology of dispersed graphene sheets in UHMWPE was exfoliated. Non-isothermal differential scanning calorimetry (DSC) studies identified a more pronounced increase in melting temperatures and latent heat of fusions in nanocomposites compared to UHMWPE at lower concentrations of graphene. Thermogravimetric analysis (TGA) and derivative thermogravimetric (DTG) revealed that UHMWPE’s thermal stability has been improved via incorporating graphene nanosheets. Further, degradation kinetics of neat polymer and nanocomposites have been modeled using equations such as Friedman, Ozawa–Flynn–Wall (OFW), Kissinger, and Augis and Bennett’s. The "Model-Fitting Method” showed that the auto-catalytic nth-order mechanism provided a highly consistent and appropriate fit to describe the degradation mechanism of UHMWPE and its graphene nanocomposites. In addition, the calculated activation energy (Ea) of thermal degradation was enhanced by an increase in graphene concentration up to 2.1 wt.%, followed by a decrease in higher graphene content.

Chiral salenCo(iii) complexes with bulky substituents as catalysts for stereoselective alternating copolymerization of racemic propylene oxide with carbon dioxide and succinic anhydride

2021 ◽  
Vol 12 (12) ◽  
pp. 1776-1786
Author(s):  
Zhou Wang ◽  
Ying Mu
Keyword(s):  
Carbon Dioxide ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
Succinic Anhydride ◽  
Poly Propylene ◽  
Alternating Copolymerization

Stereoregular poly(propylene carbonate)s and poly(propylene succinate-block-carbonate)s were synthesized with new chiral salenCo(iii) catalysts carrying bulky substituents.

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