Synthesis and physical characterization of poly(cyclohexane carbonate), synthesized from CO2 and cyclohexene oxide

Pyrazole Supported Zinc(II) Benzoates as Catalysts for the Ring Opening Copolymerization of Cyclohexene Oxide and Carbon Dioxide

“…The reaction of CO 2 that has been studied extensively in the past five decades is the metal catalyzed alternating copolymerization of CO 2 with epoxides to polycarbonates, some of which are biodegradable and are thus of great importance in the plastic industry. The alicyclic polycarbonate poly(cyclohexene carbonate) PCHC, resulting from the copolymerization of CO 2 and CHO, possesses physical attributes very similar to polystyrene. For example, the glass transition temperature of PCHC (T g = 115˝C) [1] is very close to that of polystyrene (T g = 100˝C), hence the polymer has good dimensional stability at temperatures above 100˝C.…”

“…For example, the glass transition temperature of PCHC (T g = 115˝C) [1] is very close to that of polystyrene (T g = 100˝C), hence the polymer has good dimensional stability at temperatures above 100˝C. Furthermore, the T g of PCHC is slightly lower than that of the classical bisphenol-A polycarbonate (145˝C) [2]. This allows for the application of PCHC in a number of industrial processes [3,4].…”

“…These are: zinc carboxylates with fluorinated tails [13,14], bisphenoxides of zinc [15], and three-coordinate zinc complexes containing β-diiminate ligands [16]. Zn-based catalyst systems have, thus far, remained one of the most active catalysts for the CO 2 and epoxide copolymerization reaction [17][18][19]. In general, zinc(II) complexes containing a Zn-O bond and supported by N-donor bidentate ligand systems have been reported to be highly active for the copolymerization reaction of CO 2 and epoxides [1].…”

Thermal decomposition studies of highly alternating CO2- cyclohexene oxide copolymer

“…Over the past decade, different molecular weights of PCHC have been prepared, and the thermal and mechanical properties of these PCHC were investigated [15][16][17]. However, few reports focused on the thermal decomposition process of the PCHC which is helpful for application of the PCHC in the field of microelectronics sacrificial material.…”

Chemoselective Alternating Copolymerization of Limonene Dioxide and Carbon Dioxide: A New Highly Functional Aliphatic Epoxy Polycarbonate

“…[3] So far, PCHC and PPC as such have limited commercial applications because of their unsatisfactory physical and mechanical properties, for example, poor hydrophilicity and low elongation at break. [4] Moreover, the lack of additional functionality in the corresponding epoxides makes it rather difficult to enhance the properties by chemical modification. On the other hand, the selective polymerization of functional epoxides, epoxy monomers with an extra functionality like an alkenyl, carbonate, or hydrophilic group, leads to functional polymers of interest for many applications such as reactive substrates, coating resins, polymeric nanoparticles, and electronic and biomedical materials.…”