New thermosets obtained from DGEBA and Meldrum acid with lanthanum and ytterbium triflates as cationic initiators

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• 作者：Lidia Gonzá ; lez ; Xavier Ramis ; Josep Maria Salla ; Angels Serra ; Ana Mantecó ; n
• 关键词：Epoxy resins ; Meldrum acid ; Cationic polymerization ; Cross-linking ; Thermosets
• 刊名：European Polymer Journal
• 出版年：2008
• 期刊代码：35_00143057
• 类别：ms
• 出版时间：May 2008
• 卷：44
• 期：5
• 页码：1535-1547
• 文件大小：523 K

摘要

Ytterbium and lanthanum triflates were used as cationic initiators to cure mixtures of diglycidylether of bisphenol A (DGEBA) and Meldrum acid (MA) in several proportions of comonomers and initiators. The evolution of epoxy and lactone groups during curing, and of linear ester formed in the final materials were evaluated by Fourier transform infrared in the attenuated-total-reflection mode (FTIR/ATR).