2009/01/13 by R. D. Walker, Rosemary M. Conrad, Robert H. Grubbs · 1 citation
Chemistry · Materials Science · Computer Science · #Synthetic Organic Chemistry Methods #biodegradable polymer synthesis and properties #Model-Driven Software Engineering Techniques
paper · doi:10.1021/ma801693q
openalex publication_date 2009/01/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
The living ring-opening metathesis polymerization (ROMP) of trans-cyclooctene (tCO) was investigated. ROMP of tCO in the presence of PPh(3) in THF leads to the formation of narrowly dispersed polycyclooctene (PCO). The presence of PPh(3) as an additive and the use of THF as a solvent were demonstrated to be necessary to suppress competing secondary metathesis processes in the ROMP of tCO. Under optimal conditions, narrowly dispersed PCO was achieved without high molecular weight contaminates. The PCO was then hydrogenated to form linear, narrowly dispersed polyethylene with a melting temperature of 139 °C. Protected, hydroxy-functionalized tCO was polymerized by this method to afford narrowly dispersed, hydroxylated PCO. Block copolymers containing polynorbornene and PCO or containing differentially functionalized PCO were also synthesized and hydrogenated to form block copolymers containing blocks of linear, narrowly dispersed polyethylene.