Development of a H3PW12O40/CeO2 catalyst for bulk ring-opening polymerization of a cyclic carbonate

2018 ◽  
Vol 20 (21) ◽  
pp. 4995-5006 ◽  
Author(s):  
Masayoshi Honda ◽  
Hideki Abe
Keyword(s):  
Thermal Properties ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Cyclic Carbonate

Various biomass-derived poly(aliphatic carbonate)s were synthesized by bulk ring-opening polymerization over a heterogeneous H3PW12O40/CeO2 catalyst, and thermal properties were investigated.

scholarly journals Zirconium (IV) Acetylacetonate: Ring-Opening Initiator Mediating One-Step Synthesis of Biodegradable Polyacids

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Piotr Dobrzyński ◽  
Małgorzata Pastusiak ◽  
Joanna Jaworska ◽  
Bożena Kaczmarczyk ◽  
Michał Kwiecień ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Acid Derivative ◽  
Ring Opening ◽  
Active Catalyst ◽  
Ring Opening Polymerization ◽  
Cyclic Carbonate ◽  
Trimethylene Carbonate ◽  
Step Method ◽  
Polymerization Mechanism ◽  
One Step

Biodegradable polyacid is obtained in one-step ring-opening polymerization (ROP) of carboxylic-acid-functionalized six-membered cyclic carbonate mediated with zirconium (IV) acetylacetonate. Exemplary copolymers with L,L-lactide are described as well. Moreover, zirconium (IV) acetylacetonate is found to be active catalyst of trimethylene carbonate (TMC) ROP in presence of carboxylic acid yielding PTMC end-capped with the acid derivative. Polymerization mechanism is hypothesized demonstrating possibilities of the method in work-saving polycation synthesis and one-step method of conjugate synthesis of well-known biocompatible polyesters and polycarbonates.

Organophosphate-catalyzed bulk ring-opening polymerization as an environmentally benign route leading to block copolyesters, end-functionalized polyesters, and polyester-based polyurethane

2015 ◽  
Vol 6 (24) ◽  
pp. 4374-4384 ◽  
Author(s):  
Tatsuya Saito ◽  
Yusuke Aizawa ◽  
Kenji Tajima ◽  
Takuya Isono ◽  
Toshifumi Satoh
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Cyclic Carbonate ◽  
Environmentally Benign ◽  
Cyclic Ester ◽  
Cyclic Esters

To expand the potential of an organophosphate catalyst, ring-opening polymerization of cyclic esters, cyclic ester-ether, and cyclic carbonate was demonstrated under bulk conditions.

Thermal property of an aggregation-induced emission fluorophore that forms metal–ligand complexes with Zn(ClO4)2 of salicylaldehyde azine-functionalized polybenzoxazine

RSC Advances ◽  
2015 ◽  
Vol 5 (80) ◽  
pp. 65635-65645 ◽  
Author(s):  
Mohamed Gamal Mohamed ◽  
Ruey-Chorng Lin ◽  
Jia-Huei Tu ◽  
Fang-Hsien Lu ◽  
Jin-Long Hong ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Thermal Property ◽  
Ring Opening ◽  
Zinc Ion ◽  
Ring Opening Polymerization ◽  
Aggregation Induced Emission ◽  
Metal Ligand

A salicylaldehyde azine-functionalized benzoxazine monomer formed zinc ion complexes not only improved the thermal properties but also facilitated ring-opening polymerization.

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