研究目的
Investigating the effect of laser radiation on the structure and thermal properties of chitosan-MgO nanocomposite aiming to study the possibility of enhancing its properties and refining its performance in different applications.
研究成果
The study concluded that laser exposure up to 25 J/cm2 results in the production of broken molecular chains, reducing the thermal stability of the Chitosan-MgO nanocomposite. Higher laser fluences cause the generation of defects that lower the melting temperature, making the material suitable for applications requiring formation at lower temperatures.
研究不足
The study is limited by the range of laser fluences applied (2 to 25 J/cm2) and the specific conditions under which the nanocomposite was prepared and analyzed. Potential areas for optimization include exploring a wider range of laser fluences and different nanocomposite compositions.
1：Experimental Design and Method Selection:
The study involved preparing Chitosan-MgO nanocomposite films via a one-pot solution casting method and exposing them to laser pulses of varying fluences.
2：Sample Selection and Data Sources:
Chitosan-MgO nanocomposite samples were prepared and characterized before and after laser exposure.
3：List of Experimental Equipment and Materials:
SEM (Model JCM 6000, JEOL), XRD (Shimadzu 6000 diffractometer), FTIR (Shimadzu 8201 PC model), TGA (Shimadzu-50), DSC (Setaram labsys TG–DSC16), and an IR-pulsed laser (Model No. SSL3, USA).
4：Experimental Procedures and Operational Workflow:
Samples were exposed to laser pulses, then analyzed using SEM, XRD, FTIR, TGA, and DSC to study structural and thermal modifications.
5：Data Analysis Methods:
Data from XRD, FTIR, TGA, and DSC were analyzed to understand the effects of laser exposure on the nanocomposite's properties.
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