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Updated: Aug 11, 2025
Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
Published on: January 19, 2016
One-pot synthesis of liquid photocrosslinkable poly(l-lactide) with terminal triacrylate
Chung-Fu Yu1, Syang-Peng Rwei1,2, Yao-Chi Shu3
1Institute of Organic and Polymeric Materials, Research, National Taipei University of Technology 1, Sec. 3, Zhongxiao E. Rd. Taipei 10608 Taiwan Republic of China f10714@ntut.edu.tw.
Abstract:
We synthesized a poly(l-lactide)-pentaerythritol triacrylate (PETA) polymer modified with acrylic trifunctional groups using a one-pot method based on ring-opening polymerization of l-lactide and PETA. We calculated the molecular weight and structure of PLA-PETA using gel permeation chromatography (GPC) and nuclear magnetic resonance (NMR) (1H, 13C, heteronuclear multiple bond correlation [HMBC]) spectroscopy. Photocrosslinking PLA-PETA using the Omnirad 1173 photoinitiator yielded a transparent sample with 91% crosslinkage. The crosslinked sample was analyzed using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and thermomechanical analysis (TMA) to determine its thermal properties and thermal expansion coefficient. In vitro cell toxicity tests showed an average cell viability >90%, indicating that the PLA-PETA polymer had good biocompatibility with cells after photocrosslinking.
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