研究目的
Investigating the synthesis of a metal-free PCL based macrophotoinitiator via enzymatic ring-opening polymerization and its application in the photopolymerization of various acrylates.
研究成果
The enzymatically synthesized PCL based macrophotoinitiator was effective for the photopolymerization of various acrylates, with the highest conversions achieved for BzA and THFA. The method offers a metal-free alternative for synthesizing macrophotoinitiators, suitable for biomedical and other applications.
研究不足
The photopolymerization of HEA and PEGMEA-480 resulted in gel formation, leading to lower dry polymer conversions and difficulties in characterization due to insolubility.
1：Experimental Design and Method Selection:
Enzymatic ring-opening polymerization (eROP) was used to synthesize PCL based macrophotoinitiator with Irgacure-2959 as the initiator and Novozyme-435 as the catalyst. The macrophotoinitiator was then used to photopolymerize various acrylates under Ar atmosphere.
2：Sample Selection and Data Sources:
?-Caprolactone (CL), Irgacure-2959, Novozyme-435, and acrylates (BzA, THFA, HEA, PEGMEA-480) were used as materials.
3：List of Experimental Equipment and Materials:
Agilent 1100 SEC, Mettler-Toledo DSC-1, ATR-FT-IR (Affinity-1 FT-IR, Shimadzu), Agilent VNMRS 500 MHz NMR.
4：Experimental Procedures and Operational Workflow:
The macrophotoinitiator was synthesized via eROP, followed by photopolymerization of acrylates using LED lamps. The products were characterized by NMR, FT-IR, DSC, and SEC.
5：Data Analysis Methods:
The data were analyzed using STARe Excellence Software for DSC and standard techniques for NMR, FT-IR, and SEC.
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