请问能帮忙翻译下这段化学文献吗
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发布时间：2022-04-28 14:36
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时间：2022-06-19 05:04
Abstract: aliphatic polycarbonate has the characteristic which is biodegradability. As a biological material, its Surface corrosion degradation mechanism and remarkable biocompatibility make it has more attention in the Medical and other fields. This article will obtain the Cyclic carbonate monomers 5, 5 - dimethyl carbonyl oxygen - 1, 3 - dioxane - 2 -
ketone through the chemical reaction between 2, 2 - dihydroxy methyl - methyl malonate and ethyl chloroformate, then use stannous iso caprylate as the catalyst, concting the ring opening polymerization of ontology in different temperature, and obtain the new kind of Makrolon contain ester group. The structure of monomer and polymer represent by the infrared spectroscopy, HNMR and CNMR, accourding to the result, the proctive rate and molecular weight of the ring-opening polymerization increase with the tempreature, however if the tempreature is higher than 100 ℃, ring opening polymerization will have some decarboxylic reaction. The reasarch got the conclusion which is the reaction condition of the polymerization reaction is: 90 ℃. The reaction time is 12 hour and in the process of polymerization there wil not have decarboxylic reaction totally.
Key word: The six-member cyclic carbonate, ring opening polymerization, Makrolon
