研究目的
To develop light-triggered shape memory polymers (SMPs) that can change shape under external stimuli, specifically using a violet laser, by combining thermoset polybenzoxazine and thermoplastic polycaprolactone with silver nanoparticles (AgNPs) for photothermal effect.
研究成果
The study successfully developed light-triggered SMPs by incorporating SS-PCL modified AgNPs into crosslink networks of thermoset PmBz and thermoplastic PCL. The materials showed excellent shape memory effects under violet laser exposure, with high shape recovery and fixing ratios. The AgNPs also improved mechanical properties and shape memory performance.
研究不足
The study focuses on the development and characterization of light-triggered SMPs but does not extensively explore the long-term stability or potential degradation of the materials under repeated use or varying environmental conditions.
1:Experimental Design and Method Selection:
In-situ ring opening polymerization (ROP) was used to combine thermoset polybenzoxazine (PmBz) and thermoplastic polycaprolactone (PCL) with AgNPs.
2:Sample Selection and Data Sources:
Materials included ε-caprolactone, melamine-based benzoxazine (mBz), and silver nitrate (AgNO3).
3:3). List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Equipment included a Bruker ALPHA FTIR spectrophotometer, Bruker Avance 500 MHz NMR spectrometer, and a Q800 dynamic mechanical analyzer. Materials included AgNO3, 2,4,6-triamino-1,3,5-triazine (melamine), and neopentyl glycol diglycidyl ether (NPGDE).
4:Experimental Procedures and Operational Workflow:
The process involved synthesis of SS-PCL, AgNPs functionalized with SS-PCL, mBz, OH-PCL-OH, and fabrication of PmBz-PCL hybridized with AgNPs.
5:Data Analysis Methods:
Characterization was done using FTIR, NMR, DSC, GPC, UV-vis spectroscopy, TEM, and tensile properties measurement.
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