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Photopolymerization of enzymatically synthesized methacrylated poly(caprolactone) with poly(ethylene glycol) macromonomer |
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| Authors: | Nazif Ugur Kaya Didem Saloglu Yuksel Guvenilir |
| Affiliation: | 1. Polymer Science &2. Technology Department, Graduate School of Science Engineering &3. Technology, Istanbul Technical University, Maslak, Istanbul, Turkey;4. Chemical and Process Engineering Department, Faculty of Engineering, Yalova University, Yalova, Turkey;5. Chemical Engineering Department, Faculty of Chemical &6. Metallurgical Engineering, Istanbul Technical University, Maslak, Istanbul, Turkey |
| Abstract: | Polycaprolactone (PCL) based α,ω-methacrylated macromonomer (DMPCL) was synthesized via enzymatic ring-opening polymerization (eROP) by using Novozyme 435 as the enzyme immobilized catalyst. DMPCL was further photopolymerized with monofunctional poly(ethylene glycol) methyl ether methacrylate (PEGMA-950) macromonomer and trimethylolpropane triacrylate (TMPTA) as tri-functionalized crosslinking agent in glass vials when CHCl3 was the solvent and Irgacure 819 was the photoinitiator. Ultraviolet (UV) Light Emitting Diode (LED) bulbs enabled photoinduced reactions at room temperature with low heat generation and high reaction efficiency. The obtained gels were characterized with Fourier Transform Infrared Spectroscopy (FT-IR) and Differential Scanning Calorimetry (DSC). DMPCL participated as an effective crosslinking agent in the photopolymerization of PEGMA-950. Combined usage of DMPCL and PEGMA-950 resulted in significantly more effective polymerization than the separate photopolymerizations of these macromonomers. |
| Keywords: | Biopolymer polycaprolactone polyethyleneglycol enzymatic ring-opening polymerization (eROP) photopolymerization macromonomer methacrylate end-group |