Ductile Copolyesters Prepared Using Succinic Acid, 1,4-Butanediol, and Bis(2-hydroxyethyl) Terephthalate with Minimizing Generation of Tetrahydrofuran DOI Open Access
Sang Uk Park,

Hyeon Jeong Seo,

Yeong Hyun Seo

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(4), P. 519 - 519

Published: Feb. 14, 2024

Poly(1,4-butylene succinate) (PBS) is a promising sustainable and biodegradable synthetic polyester. In this study, we synthesized PBS-based copolyesters by incorporating 5–20 mol% of –O2CC6H4CO2– –OCH2CH2O– units through the polycondensation succinic acid (SA) with 1,4-butanediol (BD) bis(2-hydroxyethyl) terephthalate (BHET). Two different catalysts, H3PO4 conventional catalyst (nBuO)4Ti, were used comparatively in synthesis process. The produced using former treated M(2-ethylhexanoate)2 (M = Mg, Zn, Mn) to connect chains ionic interactions between M2+ ions either –CH2OP(O)(OH)O− or (–CH2O)2P(O)O− groups. By BHET (i.e., –OCH2CH2O–), resulting exhibited improved ductile properties enhanced elongation at break, albeit reduced tensile strength. prepared H3PO4/M(2-ethylhexanoate)2 displayed less random distribution units, leading faster crystallization rate, higher Tm value, yield strength compared those (nBuO)4Ti same amount BHET. Furthermore, they substantial shear-thinning behavior their rheological due presence long-chain branches (–CH2O)3P=O units. Unfortunately, H3PO4/M(2-ethylhexanoate)2, hence containing M2+, –CH2OP(O)(OH)O−, groups, did not exhibit biodegradability under ambient soil conditions.

Language: Английский

Ductile Copolyesters Prepared Using Succinic Acid, 1,4-Butanediol, and Bis(2-hydroxyethyl) Terephthalate with Minimizing Generation of Tetrahydrofuran DOI Open Access
Sang Uk Park,

Hyeon Jeong Seo,

Yeong Hyun Seo

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(4), P. 519 - 519

Published: Feb. 14, 2024

Poly(1,4-butylene succinate) (PBS) is a promising sustainable and biodegradable synthetic polyester. In this study, we synthesized PBS-based copolyesters by incorporating 5–20 mol% of –O2CC6H4CO2– –OCH2CH2O– units through the polycondensation succinic acid (SA) with 1,4-butanediol (BD) bis(2-hydroxyethyl) terephthalate (BHET). Two different catalysts, H3PO4 conventional catalyst (nBuO)4Ti, were used comparatively in synthesis process. The produced using former treated M(2-ethylhexanoate)2 (M = Mg, Zn, Mn) to connect chains ionic interactions between M2+ ions either –CH2OP(O)(OH)O− or (–CH2O)2P(O)O− groups. By BHET (i.e., –OCH2CH2O–), resulting exhibited improved ductile properties enhanced elongation at break, albeit reduced tensile strength. prepared H3PO4/M(2-ethylhexanoate)2 displayed less random distribution units, leading faster crystallization rate, higher Tm value, yield strength compared those (nBuO)4Ti same amount BHET. Furthermore, they substantial shear-thinning behavior their rheological due presence long-chain branches (–CH2O)3P=O units. Unfortunately, H3PO4/M(2-ethylhexanoate)2, hence containing M2+, –CH2OP(O)(OH)O−, groups, did not exhibit biodegradability under ambient soil conditions.

Language: Английский

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