研究目的
Investigating the effects of cross-linking on the thermal and mechanical properties of electro-spun polymer nanofibers of poly-vinyl cinnamate.
研究成果
Exposure to UV radiation increases the glass transition temperatures and Young’s moduli of PVCN fibers due to cross-linking, with most changes occurring within the first 10 min of exposure. The mechanical and thermal properties of photo-polymers like PVCN can be tailored by controlled UV exposure.
研究不足
The study is limited by the practical irradiation times for cross-linking, with significant changes occurring within the first 10 min. The difficulty in preparing samples with the same volume ratio introduces uncertainty in Young’s modulus measurements.
1：Experimental Design and Method Selection:
Electrospinning of PVCN fibers from a solution in 1,2 dichloroethane, followed by UV exposure for cross-linking.
2：Sample Selection and Data Sources:
PVCN fibers electrospun under controlled conditions.
3：List of Experimental Equipment and Materials:
SEM for fiber morphology, DSC for thermal properties, Deben microtest 200 N tensile stage for mechanical properties, FTIR spectrometer for chemical analysis.
4：Experimental Procedures and Operational Workflow:
Electrospinning setup with specific parameters, UV exposure for cross-linking, SEM imaging, DSC analysis, tensile testing, FTIR spectroscopy.
5：Data Analysis Methods:
Image analysis for fiber diameter, DSC data for thermal transitions, tensile test data for Young’s modulus, FTIR spectra for chemical changes.
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