Analyses of the local order in poly(ethylene terephthalate) in the glassy state by two-dimensional solid-state 13C spin diffusion nuclear magnetic resonance spectroscopy

1998 ◽  
Vol 109 (11) ◽  
pp. 4651-4658 ◽  
Author(s):  
Hironori Kaji ◽  
Fumitaka Horii
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Solid State ◽  
Ethylene Terephthalate ◽  
Spin Diffusion ◽  
Glassy State ◽  
Local Order ◽  
Resonance Spectroscopy ◽  
Two Dimensional ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Fast and facile synthesis of two-dimensional FeIII nanosheets based on fluid-shear exfoliation for highly catalytic glycolysis of poly(ethylene terephthalate)

2021 ◽  
Author(s):  
Jae-Min Jeong ◽  
Se Bin Jin ◽  
Seon Gyu Son ◽  
Hoyoung Suh ◽  
Jong-Min Moon ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Ethylene Terephthalate ◽  
Two Dimensional ◽  
Fluid Shear ◽  
Facile Synthesis ◽  
Oxidation Method ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

2D FeIII nanosheets are synthesized by a fluid dynamics–assisted exfoliation and oxidation method for highly-catalyzed glycolysis reaction of PET.

Dynamic Step-Scan Two-Dimensional Fourier Transform Infrared Studies of Uniaxially Drawn Poly(Ethylene Terephthalate) Film

1996 ◽  
Vol 50 (3) ◽  
pp. 377-381 ◽  
Author(s):  
Masashi Sonoyama ◽  
Kunihiro Shoda ◽  
Gen Katagiri ◽  
Hideyuki Ishida
Keyword(s):  
Ethylene Glycol ◽  
Phenyl Ring ◽  
Ethylene Terephthalate ◽  
High Mobility ◽  
Two Dimensional ◽  
Poly Ethylene Terephthalate ◽  
Dynamic Spectra ◽  
Infrared Studies ◽  
Poly Ethylene ◽  
Mechanical Stretching

Dynamic infrared spectra of uniaxially drawn poly(ethylene terephthalate) (PET) under a sinusoidal strain were examined. A very intense dynamic band at 973 cm−1 assigned to the trans C-O stretching mode indicated stress-induced high mobility around the C-O bond in the ethylene glycol units. It was supposed that derivative-like skeletal bands observed in the dynamic spectra originated from the stress-induced frequency shift. Two-dimensional correlation analyses of the dynamic spectra were also carried out and revealed that the phenyl ring 18a band at 1018 cm−1 and the phenyl ring 19b band at 1410 cm−1 were composed of three and two independent components, respectively. The correlation peaks between the phenyl ring and CH2 vibrational modes showed that orientation of the methylene group in the ethylene glycol unit, induced by mechanical stretching, is faster than that of the phenyl ring in the terephthalate unit.

Chain Dynamics in Antiplasticized and Annealed Poly(ethylene terephthalate) Determined by Solid-State NMR and Correlated with Enhanced Barrier Properties

2012 ◽  
Vol 45 (2) ◽  
pp. 879-887 ◽  
Author(s):  
Rudra Prosad Choudhury ◽  
Jong Suk Lee ◽  
Robert M. Kriegel ◽  
William J. Koros ◽  
Haskell W. Beckham
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Ethylene Terephthalate ◽  
Barrier Properties ◽  
Chain Dynamics ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene
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