AI Article Synopsis
- The study analyzes how the infrared spectrum of polymers changes with temperature and includes differential scanning calorimetry (DSC) results.
- It utilizes the van't Hoff equation to calculate the absorbance ratios of vibrational states and determine the apparent enthalpy differences during the transformation of these states.
- The findings reveal that the characteristic vibration modes of a chemical group in a polymer are affected by the glass transition process, with varying influences based on the specific polymer system surrounding the chemical moiety.
Article Abstract
The change in the infrared spectrum of polymer samples with temperature and their differential scanning calorimetry (DSC) experimental results are analyzed. According to the van't Hoff equation at constant pressure, the changes in the absorbance ratio corresponding to high and low vibrational states are calculated, and the apparent enthalpy differences of the vibration energy states transformation of the characteristic group can be obtained. From the experimental results, we can find that characteristic vibration modes of a chemical group in a polymer are under the influence of the glass transition process of the polymer with a different extent. The characteristic vibration modes of the same chemical group behave differently due to the influence of the polymer system at which the chemical moiety is situated.
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| http://dx.doi.org/10.2116/analsci.33.1071 | DOI Listing |
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