Synthesis and Characterization of Aliphatic-Aromatic Copolyesters Based on Daidzein DOI
Li Zhang, Zhengzai Cheng, Lesly Dasilva Wandji Djouonkep

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(31), P. 13445 - 13458

Published: July 24, 2024

A novel diol monomer, 7-(2-hydroxyethoxy)-3-(4-(2-hydroxyethoxy)phenyl)-4H-chromen-4-one (M), was synthesized by hydroxyethylation of daidzein, a lignin-derived compound that can be extracted from leguminous plants. diester dimethyl 4,4′-((1,4-phenylenebis(methylene))bis(oxy))bis(3-methoxybenzoate) (N), obtained through Williamson etherification reaction methyl vanillate, potentially derived plants such as Hovenia dulcis. The the two biobased monomers coupled with aliphatic diols (ethylene glycol, 1,4-butanediol, 1,6-hexanediol, or 1,8-octanediol) in two-step melt polymerization process yielded series aliphatic-aromatic copolyesters. Structure–property relationships these materials were established Fourier transform infrared spectroscopy, NMR gel permeation chromatography, differential scanning calorimetry, thermogravimetric analysis, and dynamic mechanical analysis. weight-average molecular weight (Mw) samples ranged 62,600 to 69,900 g/mol, varying carbon chain length not only induced changes weights but also synergistically tuned thermal stability properties copolymers. Thermal analysis glass transition temperatures (Tg) 115–141 °C, melting (Tm) 271–308 5% decomposition (Td,5%) 397–460 °C. exhibited high yield strength (50–115 MPa) elongation at break (235–300%) values. After 32 weeks degradation soil, copolyesters experienced mass losses up 4.1%. Ecotoxicity studies showed 14-day survival rate earthworms exposed above 80%, suggesting low toxicity environment. Overall, excellent properties, well significant biodegradability, make them suitable replace petroleum-based commercial polyesters, thereby offering innovative solutions problem environmental pollution.

Language: Английский

Synthesis of Biobased Poly(propylene 2,5-furandicarboxylate)-block-polycaprolactone for Stretchable Nanofiber Membranes Used in Oil–Water Separation DOI

Longyin Wan,

Zhilin Dong,

Yunwei Li

et al.

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Language: Английский

Citations

0
Synthesis and Characterization of Aliphatic-Aromatic Copolyesters Based on Daidzein DOI
Li Zhang, Zhengzai Cheng, Lesly Dasilva Wandji Djouonkep

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(31), P. 13445 - 13458

Published: July 24, 2024

A novel diol monomer, 7-(2-hydroxyethoxy)-3-(4-(2-hydroxyethoxy)phenyl)-4H-chromen-4-one (M), was synthesized by hydroxyethylation of daidzein, a lignin-derived compound that can be extracted from leguminous plants. diester dimethyl 4,4′-((1,4-phenylenebis(methylene))bis(oxy))bis(3-methoxybenzoate) (N), obtained through Williamson etherification reaction methyl vanillate, potentially derived plants such as Hovenia dulcis. The the two biobased monomers coupled with aliphatic diols (ethylene glycol, 1,4-butanediol, 1,6-hexanediol, or 1,8-octanediol) in two-step melt polymerization process yielded series aliphatic-aromatic copolyesters. Structure–property relationships these materials were established Fourier transform infrared spectroscopy, NMR gel permeation chromatography, differential scanning calorimetry, thermogravimetric analysis, and dynamic mechanical analysis. weight-average molecular weight (Mw) samples ranged 62,600 to 69,900 g/mol, varying carbon chain length not only induced changes weights but also synergistically tuned thermal stability properties copolymers. Thermal analysis glass transition temperatures (Tg) 115–141 °C, melting (Tm) 271–308 5% decomposition (Td,5%) 397–460 °C. exhibited high yield strength (50–115 MPa) elongation at break (235–300%) values. After 32 weeks degradation soil, copolyesters experienced mass losses up 4.1%. Ecotoxicity studies showed 14-day survival rate earthworms exposed above 80%, suggesting low toxicity environment. Overall, excellent properties, well significant biodegradability, make them suitable replace petroleum-based commercial polyesters, thereby offering innovative solutions problem environmental pollution.

Language: Английский

Citations

1