Copolymerization of Glycolide and ɛ-Caprolactone Using 12-Aminolauric Acid Modified Montmorillonite

Gallos, Hav; Reyes, LQ

doi:10.1088/1757-899x/229/1/012029

Cited by 1 publication

(2 citation statements)

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“…To tune the thermal and mechanical properties of the PGA homopolymer, an expanded range of property profiles can be obtained through blending with polyesters 15 or incorporation of one or more comonomers. [16][17][18][19][20][21][22][23][24][25] However, the corrosive and volatile HFIP 26 served as solvent to make the raw materials for the PGA-based composites is hazardous to the human body during the process. And the small difference between the temperatures of the melting and the degradation limits the bulk mixture.…”

Section: Introductionmentioning

confidence: 99%

“…The poly(ε-caprolactone-co-lactide) (PCLA), 27,28 poly(lactic-co-glycolic acid) (PLGA), [29][30][31] and poly(ϵ-caprolactone-co-glycolic acid) (PCGA) 16,17,22 copolymers presented the combination of the corresponding homopolymer properties, which are suitable for scenario-specific applications with the mechanical and biodegradable properties. Currently, due to the availability of ε-CL monomer from biomass and the superior rheological and viscoelastic properties of PCL, PCGA with ε-CL as comonomer is a highly attractive biodegradable material in the medical application.…”

Section: Introductionmentioning

confidence: 99%

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A wide range of poly(glycolic acid)‐based di‐ and tri‐block polyesters by a single organocatalyst: Synthesis and characterization

Dong

Zhao

Sun

et al. 2023

Journal of Polymer Science

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The ring‐opening polymerization (ROP) of glycolide (GA), the copolymerization of GA with ε‐caprolactone (ε‐CL), and the terpolymerization of GA with ε‐CL and lactide (LA) were studied over the cheap non‐toxic metal‐free organocatalyst tetrabutylammonium 2‐(carbamyl)benzoate (TBACB). The catalyst with comparable catalytic activity to the comonomers afforded a series of well‐defined PGA‐based block polymers with ε‐CL, LA monomers at high yields by varying feeding methods under bulk and solution conditions. The poly(ɛ‐caprolactone‐b‐glycolic acid)s (PCGAs) and poly(ε‐caprolactone‐b‐lactide‐b‐glycolide) (PCLGAs) with controllable chain segment composition were obtained by “one‐pot” solution copolymerization in mixtures, or semi‐batch copolymerization. Due to the high thermal stability of TBACB, the PCGA and PCLGA with high molecular weight (Mn = 6.9 and 10.0 kg mol−1) could also be obtained by bulk polymerization at 120 °C by sequential addition of ε‐CL, (LA), and GA in a short time (<2.5 h). Compared to the polymers with similar compositions by different methods, the bulk polymerization showed more effective and higher molecular weight. The microstructure characterized by NMR showed highly ordered block polymers with defined chain segments. Two melting transitions (Tm) of PCGA suggested exclusively associated with PCL and PGA segmental chain in the product.

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