Renewable benzoxazine monomers from “lignin-like” naturally occurring phenolic derivatives
作者:Marc Comí、Gerard Lligadas、Juan C. Ronda、Marina Galià、Virginia Cádiz
DOI:10.1002/pola.26918
日期:2013.11.15
The benzoxazines of three naturallyoccurring phenylpropanoid phenols: ferulic, coumaric, and phloretic acids, and their esters are described. Benzoxazines with conjugated unsaturated chains exhibit unusual poor thermal stability and degrade partially at the polymerization temperature making necessary the use of a catalyst (BF3.Et2O) to low the polymerization temperature and prevent degradation. Polybenzoxazines