研究目的
Investigating the effects of deformation on the microstructure of polymers using Raman spectroscopy and differential scanning calorimetry (DSC) to understand the changes in crystallinity and chain orientation.
研究成果
The study demonstrates that crystallinity and chain orientation increase with the deformation of the polymer. Confocal Raman microscopy and differential scanning calorimetry are effective tools for characterizing the inner structure of polymers. Future work will focus on finding solutions for other polymers and investigating relationships between mechanical properties and polymer morphology/structure.
研究不足
The study is ongoing, and the results presented are from the first tests. The need for material-specific structure relevant peaks and mathematical formulations for crystallinity and orientation for different polymers like PET is identified as a limitation.
1：Experimental Design and Method Selection:
The study uses Raman spectroscopy and DSC to analyze the microstructure of non-deformed and deformed polymer materials.
2：Sample Selection and Data Sources:
Polypropylene (PP) and polyethylene terephthalate (PET) samples with different degrees of deformation were analyzed.
3：List of Experimental Equipment and Materials:
Confocal Raman microscope (Alpha300R, Witec GmbH, Ulm, Germany) with polarized laser light of 532 nm and 16 mW power, and DSC instrument (Perkin Elmer, DSC 8000, USA).
4：Experimental Procedures and Operational Workflow:
Raman measurements were performed with polarization directions of 0° or 90°, and DSC measurements were conducted with heating and cooling rates set at 10 K/min.
5：Data Analysis Methods:
Crystallinity and chain orientation were calculated from the integration of Raman bands and DSC curves.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
