Polyoxometallate catalyzed oxidative modification of lignin as a favorable pre-treatment for copolymerization with propylene oxide for polyurethanes production
| Main Authors: | Vevere, Laima, Arshanitsa, Alexandr, Dizbite, Tatiana, Jahina, Lilija, Telysheva, Galina |
|---|---|
| Format: | Proceeding Journal |
| Bahasa: | eng |
| Terbitan: |
, 2013
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| Online Access: |
https://zenodo.org/record/7554 |
Daftar Isi:
- The oxypropylation of the parent and oxidized lignins with propylene oxide (PO) was studied in high pressure Parr reactor using KOH as a catalyst. It was shown that oxypropylation of lignin pre-oxidized in the system POM/H2O2 proceeded in the similar manner as the parent lignin but the rate of the process was some lower due to the presence of higher amount of -COOH groups with lower nucleophilicity.