Solvent-free lipase-catalyzed synthesis of linear and thermally stable polyesters obtained from diacids and diols

Campisano, Ivone Sampaio Pereira; Eugenio, Erika de Queiros; Brackmann, Rodrigo; Dias, Marcos L.; Castro, Aline Machado de; Langone, Marta A. P.

doi:10.1007/s43153-021-00137-y

Cited by 2 publications

(1 citation statement)

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“…The condition employed produced low molecular weight polyesters with an Mn value of 974 g/mol at a reaction temperature of 85 °C for 168 h. Kato et al [ 149 ] produced a polymer made of 1,6-dihydroxyhexane and dimethyl 2-mercaptosuccinate under a solvent-free condition using Novozym 435 as a catalyst. From the results, polyesters with the Mw of 14,000 g/mol were produced at 70 °C after 48 h. Ivone et al [ 150 ] had a study to utilize Novozym 435 to catalyze polycondensation of seven dibasic acids and six diols in a solvent-free environment. The result has shown that long carbon chain monomers such as sebacic acid and 1,8-octanediol were easier to be polymerized than short-chain monomers.…”

Section: Solvent System For Enzyme-catalyzed Synthesis Of Polyestersmentioning

confidence: 99%

Recent Advances in the Enzymatic Synthesis of Polyester

Wang

Liu²,

Lee

et al. 2022

Polymers

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Polyester is a kind of polymer composed of ester bond-linked polybasic acids and polyol. This type of polymer has a wide range of applications in various industries, such as automotive, furniture, coatings, packaging, and biomedical. The traditional process of synthesizing polyester mainly uses metal catalyst polymerization under high-temperature. This condition may have problems with metal residue and undesired side reactions. As an alternative, enzyme-catalyzed polymerization is evolving rapidly due to the metal-free residue, satisfactory biocompatibility, and mild reaction conditions. This article presented the reaction modes of enzyme-catalyzed ring-opening polymerization and enzyme-catalyzed polycondensation and their combinations, respectively. In addition, the article also summarized how lipase-catalyzed the polymerization of polyester, which includes (i) the distinctive features of lipase, (ⅱ) the lipase-catalyzed polymerization and its mechanism, and (ⅲ) the lipase stability under organic solvent and high-temperature conditions. In addition, this article also focused on the advantages and disadvantages of enzyme-catalyzed polyester synthesis under different solvent systems, including organic solvent systems, solvent-free systems, and green solvent systems. The challenges of enzyme optimization and process equipment innovation for further industrialization of enzyme-catalyzed polyester synthesis were also discussed in this article.

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Section: Solvent System For Enzyme-catalyzed Synthesis Of Polyestersmentioning

confidence: 99%