A Comparison of the use of FTIR spectroscopy with DSC in the characterisation of melting and crystallisation in polycaprolactone

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)
302 Downloads (Pure)

Abstract

The infra­‐red spectrum of polycaprolactone has been recorded as a function of temperature in the range where melting and crystallisation of the polymer can occur. Examination of the carbonyl band of the spectra reveals a clear morphological sensitivity; heating the semi-­‐ crystalline polymer through the melting region results in a decrease in the intensity of the crystalline
component of the carbonyl band. Accordingly, there was a subsequent increase in intensity of the crystalline carbonyl band on cooling. To enable comparison of these findings with a more conventional method of thermal analysis, similar experiments were conducted using a differential scanning calorimeter. The heated ATR accessory adopted for use in the FTIR spectrometer imposed
significant limitations in the range of possible heating and cooling rates, but when these rates were carefully matched between FTIR and DSC, close correlation between the melting point and onset of re-­‐crystallisation was observed. The results confirm that FTIR can be used as an alternative, if more laborious, way of investigating melting and re­‐crystallisation.
Original languageEnglish
Pages (from-to)669-674
Number of pages6
JournalJournal of Thermal Analysis and Calorimetry
Volume107
Issue number2
Early online date17 Jul 2011
DOIs
Publication statusPublished - 1 Feb 2012

Keywords

  • polycaprolactone (PCL)
  • Crystallisation
  • Melting
  • DSC
  • FTIR

Fingerprint

Dive into the research topics of 'A Comparison of the use of FTIR spectroscopy with DSC in the characterisation of melting and crystallisation in polycaprolactone'. Together they form a unique fingerprint.

Cite this