Details

Autor(en) / Beteiligte

• Liu, Yuan
• Huang, Xing
• Han, Kaichen
• Dai, Yuhua
• Zhang, Xueqin
• Zhao, Yuxia

Titel

High-Performance Lignin-Based Water-Soluble Macromolecular Photoinitiator for the Fabrication of Hybrid Hydrogel

Ist Teil von

• ACS sustainable chemistry & engineering, 2019-02, Vol.7 (4), p.4004-4011

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Developing low-migration macromolecular photoinitiators (macro PIs) is significant to achieve a sufficient biosafety for photopolymers. In this study, for the first time lignin was introduced into photoinitiating systems. A novel lignin-based water-soluble macro PI (L-PEG-2959) was designed and synthesized by introducing water-soluble PEG chain and photoinitiating moiety into lignin backbone simultaneously. A series of characterizations were performed, including 1H NMR, FTIR, UV–vis, GPC, and TGA analysis, which indicated that L-PEG-2959 has excellent light absorption property within 200–400 nm, high initiating efficiency, and superior water solubility. Additionally, L-PEG-2959 could be compatible well with glycidyl methacrylate-modified gelatin (Gel-GMA) and initiate the photopolymerization of Gel-GMA quickly under UV irradiation to form a chemical cross-linking hybrid hydrogel. Compared with the neat hydrogel prepared by Gel-GMA initiated with Irgacure2959, a commercial small molecular PI, the hybrid hydrogels presented controllable swelling property, increased mechanical strength, remarkably reduced precipitates, and enhanced biosafety. The results indicated the great potential of lignin-based macro PIs in preparing biosafety photopolymers.