Crystallization of Polymers Investigated by Temperature-Modulated DSC

Area of Science:

• Polymer Science
• Materials Science
• Analytical Chemistry

Background:

• Conventional differential scanning calorimetry (DSC) has limitations in analyzing complex polymer thermal behavior.
• Understanding polymer crystallization is crucial for material properties and performance.
• Temperature-modulated differential scanning calorimetry (TMDSC) offers enhanced capabilities for thermal analysis.

Purpose of the Study:

• To review and summarize studies utilizing TMDSC for polymer crystallization analysis.
• To highlight the advantages of TMDSC compared to conventional DSC for polymer characterization.
• To illustrate the diverse information obtainable from TMDSC experiments on polymer crystallization.

Main Methods:

• Analysis of polymer crystallizations conducted under various experimental conditions using TMDSC.
• Examination of isothermal and non-isothermal crystallizations during heating and cooling cycles.
• Application of mathematical treatments to determine crystalline, mobile amorphous, and rigid amorphous fractions.

Main Results:

• TMDSC provides superior insights into polymer crystallization processes compared to conventional DSC.
• The technique allows for the determination of crystalline, mobile amorphous, and rigid amorphous fractions.
• Analysis of 'reversing' and 'reversible' melting phenomena in semi-crystalline polymers is explicated.

Conclusions:

• TMDSC is a powerful tool for detailed polymer crystallization studies.
• The method enables a deeper understanding of polymer thermal transitions and structural evolution.
• TMDSC facilitates the characterization of complex melting behaviors in semi-crystalline polymers.