Isomerization Cationic Ring-Opening Polymerization of CO2-Based Disubstituted-δ-Valerolactone DOI Creative Commons
Yu‐Ling Lin, Kaihao Chen, Tianwen Bai

и другие.

Опубликована: Авг. 28, 2024

The challenging ring-opening homo-polymerization of α-ethylidene-δ-vinyl-δ-valerolactone (EVL), de-rived from CO2 and 1,3-butadiene, has aroused ex-tensive attention in consideration economic effi-ciency functionalization potential. Here, we achieve the first cationic polymeriza-tion (CROP) EVL, yielding well-defined polyester PEVL with number average molecular weight up to 12.8 kg/mol low dispersity 1.2. obtained contains two kinds structural units derived EVL three alkenyl groups, indicat-ing an isomerization during propagation. isom-erization is necessary propagation, evidenced by density functional theory (DFT) calculation unavailable CROP semi-hydrogenated de-rivative without δ-vinyl group (α-ethylidene-δ-ethyl-δ-valerolactone). fast intramolecular transfer reaction slow initiation result cyclic to-pology fidelity PEVL, providing example quantitative formation CROP. degradable recyclable, possessing a glass transition temperature (Tg) -33.6 ℃, while product after modification 1-octadecanethiol exhibits melting point (Tm) 42.2 ℃.

Язык: Английский

Polyester Platform with High Refractive Indices and Closed-Loop Recyclability from CO2, 1,3-Butadiene, and Thiols DOI
Zhuorui Zhang, Ting Shen, Kaihao Chen

и другие.

ACS Macro Letters, Год журнала: 2024, Номер 13(6), С. 741 - 746

Опубликована: Май 30, 2024

α-Ethylidene-δ-vinyl-δ-valerolactone (EVL) is the only intermediate to synthesize copolymers of CO

Язык: Английский

Процитировано

4
Ring-Opening Copolymerizations of a CO2-Derived δ-Valerolactone with ε-Caprolactone and l-Lactide DOI
Ryan J. Anderson,

Rachel L. Fine,

Rachel M. Rapagnani

и другие.

Macromolecules, Год журнала: 2024, Номер 57(13), С. 6248 - 6254

Опубликована: Июнь 18, 2024

Язык: Английский

Процитировано

4
Synthesis and Functionalization of Sustainable Poly(ester-co-carbonate) from Carbon Dioxide, 1,3-Butadiene, and Biosourced Diols DOI
Kaihao Chen, Tianwen Bai, Yu‐Ling Lin

и другие.

Macromolecules, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Chemical synthesis of polymers from carbon dioxide (CO2) has been attracting a continuous amount attention. This contribution explores the copolymerization ethylidene-6-vinyltetrahydro-2H-pyran-2-one (EVL) synthesized CO2 and 1,3-butadiene with various cyclic carbonates (CC) derived biomass diols. Following "scrambling polymerizations" mechanism, EVL units are incorporated into polycarbonate backbones, resulting in random poly(ester-co-carbonate) P(EVL-co-CC) functionalizable C═C double bonds. Kinetic studies characterizations conducted by NMR, MALDI-ToF MS, SEC techniques. The obtained degradable P(EVL-co-CC)s having varying topologies, bond contents, glass transition temperatures suitable for diverse applications. Modification situ or via postpolymerization "thiol–ene" reaction produces copolymer tunable tensile strength amphiphilic hydrophilic properties. work presents an advancement utilization to synthesize functional poly(ester-co-carbonate)s, contributing development sustainable green polymer chemistry.

Язык: Английский

Процитировано

0
Synthesis of Bifunctional Copolyesters via Chemoselective Ring-Opening Copolymerization of δ-Lactone Derived from CO2 and Butadiene with ε-Caprolactone DOI
Junhao Shen, Jinbo Zhang,

Wenhui Kong

и другие.

Macromolecules, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Язык: Английский

Процитировано

0
Ring-Opening Copolymerizations of a CO2-derived δ-Valerolactone with ε-Caprolactone and L-Lactide DOI Creative Commons
Ryan J. Anderson,

Rachel Fine,

Rachel M. Rapagnani

и другие.

Опубликована: Апрель 8, 2024

Ring-opening random, gradient, and block copolymerizations of the CO2¬-derived δ-valerolactone 3-ethyl-6-vinyltetrahydro-2H-pyran-2-one (EtVP) with ε-caprolactone (ε-CL) L-lactide (LLA) are reported. By employing both concurrent sequential addition strategies, a variety thermal physical properties could be accessed. Concurrent copolymerization EtVP ε-CL yielded gradient copolymers low glass transition temperatures, while via led to semi-crystalline materials regardless monomer feed ratios. For LLA copolymerizations, temperatures increased incorporation addi-tion method, but higher Tg values were observed in from addition. Tensile testing poly(EtVP-b-LLA) molar ratio 40:60 EtVP:LLA resulted σ = 0.8 MPa, E 5.6 MPa 83% elongation at break. The chemical recyclability EtVP-based was explored as an end-of-life option. Both recycled, giving yields recycled monomers than random copolymers.

Язык: Английский

Процитировано

1
Isomerization Cationic Ring-Opening Polymerization of CO2-Based Disubstituted-δ-Valerolactone DOI Creative Commons
Yu‐Ling Lin, Kaihao Chen, Tianwen Bai

и другие.

Опубликована: Сен. 2, 2024

The challenging ring-opening homo-polymerization of α-ethylidene-δ-vinyl-δ-valerolactone (EVL), de-rived from CO2 and 1,3-butadiene, has aroused ex-tensive attention in consideration economic effi-ciency functionalization potential. Here, we achieve the first cationic polymeriza-tion (CROP) EVL, yielding well-defined polyester PEVL with number average molecular weight up to 12.8 kg/mol low dispersity 1.2. obtained contains two kinds structural units derived EVL three alkenyl groups, indicat-ing an isomerization during propagation. isom-erization is necessary propagation, evidenced by density functional theory (DFT) calculation unavailable CROP semi-hydrogenated de-rivative without δ-vinyl group (α-ethylidene-δ-ethyl-δ-valerolactone). fast intramolecular transfer reaction slow initiation result cyclic to-pology fidelity PEVL, providing example quantitative formation CROP. degradable recyclable, possessing a glass transition temperature (Tg) -33.6 ℃, while product after modification 1-octadecanethiol exhibits melting point (Tm) 42.2 ℃.

Язык: Английский

Процитировано

1
Isomerization Cationic Ring-Opening Polymerization of CO2-Based Disubstituted-δ-Valerolactone DOI Creative Commons
Yu‐Ling Lin, Kaihao Chen, Tianwen Bai

и другие.

Опубликована: Авг. 28, 2024

The challenging ring-opening homo-polymerization of α-ethylidene-δ-vinyl-δ-valerolactone (EVL), de-rived from CO2 and 1,3-butadiene, has aroused ex-tensive attention in consideration economic effi-ciency functionalization potential. Here, we achieve the first cationic polymeriza-tion (CROP) EVL, yielding well-defined polyester PEVL with number average molecular weight up to 12.8 kg/mol low dispersity 1.2. obtained contains two kinds structural units derived EVL three alkenyl groups, indicat-ing an isomerization during propagation. isom-erization is necessary propagation, evidenced by density functional theory (DFT) calculation unavailable CROP semi-hydrogenated de-rivative without δ-vinyl group (α-ethylidene-δ-ethyl-δ-valerolactone). fast intramolecular transfer reaction slow initiation result cyclic to-pology fidelity PEVL, providing example quantitative formation CROP. degradable recyclable, possessing a glass transition temperature (Tg) -33.6 ℃, while product after modification 1-octadecanethiol exhibits melting point (Tm) 42.2 ℃.

Язык: Английский

Процитировано

0