Anionic ring-opening polymerization behavior of trans-cyclohexene carbonate using metal tert-butoxides: Construction of living anionic ring-opening polymerization by lithium tert-butoxide was written by Kawamoto, Masato;Mori, Yasuyuki;Tsuge, Akihiko;Endo, Takeshi. And the article was included in Journal of Polymer Science (Hoboken, NJ, United States) in 2022.Recommanded Product: 102-09-0 The following contents are mentioned in the article:
Anionic ring-opening polymerization (ROP) behavior of trans-cyclohexene carbonate (CHC) using metal alkoxides as initiators was investigated. As a result, lithium tert-butoxide-initiated ROP of CHC with a high-monomer concentration (10 M) at low temperature (-15 to -10°C) proceeded to afford a poly(trans-cyclohexene carbonate) (PCHC) without undesired side reactions such as mainly backbiting. The suppression of side reactions enables the control of the mol. weight (Mn = 2400-6100) of PCHC with low molar-mass dispersity values (Mw/Mn = 1.16-1.22). Furthermore, by increasing the feed ratio of the monomer to the initiator, the mol. weight increases proportionally, indicating a controllable polymerization The results of a matrix-assisted laser desorption/ionization time-of-flight mass spectrometry anal., a kinetic study, and a chain extension experiment suggested a living nature of this ROP using lithium tert-butoxide. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Recommanded Product: 102-09-0).
Diphenyl carbonate (cas: 102-09-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Recommanded Product: 102-09-0
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics