Insights into the polymerization kinetics of thermoresponsive polytrimethylene carbonate bearing a methoxyethoxy side group was written by Brissenden, Amanda J.;Amsden, Brian G.. And the article was included in Journal of Polymer Science (Hoboken, NJ, United States) in 2020.Product Details of 111-77-3 This article mentions the following:
The ring-opening polymerization kinetics of 5-[2-(2-methoxyethoxy)-ethoxymethyl]-5-methyl-1,3-dioxa-2-one (TMOE-2) and 5-[2-{2-(2-methoxyethoxy)ethyoxy}-ethoxymethyl]-5-methyl-1,3-dioxa-2-one (TMOE-3) was investigated using different catalysts with the aim to improve control over mol. weight The possibility of monomer impurities driving the variability in mol. weight that has been seen in different reports, was assessed and evidence of catalysis via an imidazole impurity was found. The catalysts 1,5,7-triazobicyclo(4.4.0)dec-5-ene (TBD), hydrogen chloride in di-Et ether (HCl.Et2O), stannous 2-ethylhexanoate (SnOct2), and catalyst free thermal polymerizations were conducted to understand the mechanisms influencing the mol. weight TBD and HCl.Et2O consistently achieved high conversion of the monomer; however, mol. weights greater than 7,000 Da could not be achieved due to competing side reactions. SnOct2 catalyzed and catalyst free thermal polymerizations were highly influenced by monomer purity and achieved lower conversion than TBD and HCl.Et2O. Understanding these mechanisms will guide future synthesis of poly(TMOE-2) and poly(TMOE-3) for biomedical applications. In the experiment, the researchers used many compounds, for example, 2-(2-Methoxyethoxy)ethanol (cas: 111-77-3Product Details of 111-77-3).
2-(2-Methoxyethoxy)ethanol (cas: 111-77-3) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. Ethers can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Product Details of 111-77-3
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem