Structural changes and crystallization kinetics of polylactide under CO2investigated using high-pressure Fourier transform infrared spectroscopy

2015 ◽  
Vol 64 (12) ◽  
pp. 1762-1769 ◽  
Author(s):  
Shaojie Li ◽  
Ting He ◽  
Xia Liao ◽  
Qi Yang ◽  
Guangxian Li
Keyword(s):  
High Pressure ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Crystallization Kinetics ◽  
Structural Changes ◽  
Fourier Transform Infrared ◽  
Kinetics Of

Sequential dissociation of insulin amyloids probed by high pressure Fourier transform infrared spectroscopy

Soft Matter ◽  
2012 ◽  
Vol 8 (47) ◽  
pp. 11863 ◽  
Author(s):  
Federica Piccirilli ◽  
Sara Mangialardo ◽  
Paolo Postorino ◽  
Leonetta Baldassarre ◽  
Stefano Lupi ◽  
...  
Keyword(s):  
High Pressure ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Fourier Transform Infrared

Real-Time Pursuit of Crystal Growth by Millisecond Time-Resolved Multichannel Fourier Transform Infrared Spectroscopy

1998 ◽  
Vol 52 (2) ◽  
pp. 222-225
Author(s):  
Mamoru Hashimoto ◽  
Hiro-O Hamaguchi
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Structural Change ◽  
Liquid Phase ◽  
Fourier Transform Infrared Spectroscopy ◽  
Molecular Orientation ◽  
Structural Changes ◽  
Fourier Transform Infrared ◽  
Time Resolved ◽  
Recovery Curves

The surface (about 130 molecular layers) of an oriented thin crystal of decanoic acid was subjected to sudden melting by a laser-induced temperature jump (T-jump), and the process of subsequent crystal re-growth was monitored by millisecond time-resolved multichannel Fourier transform infrared spectroscopy. The gauche–trans structural change of the alkane part of the molecule has been probed by the CH stretch bands in the 2800–3000 cm−1 region. The change in the molecular orientation has been detected by the OH stretch band around 3065 cm−1. The recovery curves for the CH2 antisymmetric stretch and the OH stretch bands are markedly different from each other in the first 200 ms, suggesting that the gauche–trans structural changes precedes the crystal re-growth. After 500 ms, the recovery curves become identical. This result means that the rate of the gauche to the trans structural change is equal to the rate of the recovery of the molecular orientation. It is highly likely that a fast equilibrium is attained between the gauche and the trans conformations in the liquid phase after 500 ms from the sudden melting and that the crystal re-growth takes place solely via the all-trans structure in the liquid phase.

scholarly journals Kinetics of Fly Ash Geopolymerization using Semi Quantitative Fourier-Transform Infrared Spectroscopy (FTIR); Corr Data

2019 ◽  
Vol 532 ◽  
pp. 012001 ◽  
Author(s):  
Himawan Tri Bayu Murti Petrus ◽  
Arie Satya Adelizar ◽  
Achmad Widiyatmoko ◽  
Muhammad Olvianas ◽  
Wisnu Suprapta ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fly Ash ◽  
Fourier Transform Infrared Spectroscopy ◽  
Fourier Transform Infrared ◽  
Kinetics Of
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