One-Step Solvent-Free Synthesis of Polyglycolic Acid from Sustainable C1 Feedstocks
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Dosyalar
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-V C H Verlag Gmbh
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Polyglycolic acid (PGA) is an aliphatic biodegradable polyester commonly synthesized through the ring opening polymerization of glycolide using mostly tin (II) octoate catalyst. Previously, a very convenient method for the synthesis of PGA from the cationic alternating copolymerization of formaldehyde (from trioxane) and carbon monoxide (CO) with triflic acid (TfOH) catalyst in dichloromethane (DCM) at 170 degrees C is described with 92% of yield. The need of using harmful DCM solvent for this polymerization directs to discover solvent-free polymerization of formaldehyde and CO. Here, one-step solvent-free synthesis of PGA from the cationic alternating copolymerization of formaldehyde and CO is presented. Unlike the polymerization carried out in DCM solvent, optimum polymerization in solvent-free conditions with TfOH catalyst is achieved in 80% of yield at 130 degrees C. It is considered that utilization of solvent-free conditions and lower reaction temperatures compared to the previous report provides a more green and economic way of the synthesis of PGA. The method is also extended to copolymerization strategy by adding a minor amount of an epoxide compound to the reaction mixture, and PGA-based copolymer with improved physical properties (such as solubility and appearance) is obtained in solvent-free conditions.
Açıklama
Anahtar Kelimeler
carbon monoxide, cationic polymerization, formaldehyde, polyglycolic acid
Kaynak
Macromolecular Chemistry and Physics
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
222
Sayı
2
