Regulating Stereomicrostructure, Circularity and Functionality of Synthetic PHAs DOI
Ethan C. Quinn, Celine R. Parker, Sophie M. Guillaume

et al.

Polymer Chemistry, Journal Year: 2024, Volume and Issue: 16(5), P. 512 - 520

Published: Dec. 31, 2024

Synthetic poly(3-hydroxyalkanoate)s are empowered by catalyst-controlled stereomicrostructures, monomer-designed melt-processability and chemical recyclability, pendant-group-regulated functionalities.

Language: Английский

Mixed polyester recycling can enable a circular plastic economy with environmental benefits DOI
Jason S. DesVeaux, Taylor Uekert, Julia B. Curley

et al.

One Earth, Journal Year: 2024, Volume and Issue: 7(12), P. 2204 - 2222

Published: Dec. 1, 2024

Language: Английский

Citations

2
One-pot synthesis of robust silyl ether-based HDPE vitrimers with enhanced performance and recyclability DOI
Subhaprad Ash, Rishi Sharma, Mohamed Shaker

et al.

Polymer, Journal Year: 2024, Volume and Issue: 308, P. 127374 - 127374

Published: July 9, 2024

Language: Английский

Citations

1
One-Pot Synthesis of Robust Silyl Ether-Based Hdpe Vitrimers with Enhanced Performance and Recyclability DOI
Subhaprad Ash, Rishi Sharma, Mohamed Shaker

et al.

Published: Jan. 1, 2024

Vitrimers are thermally reversible crosslinked polymers that combine the performance of thermosets with benefits melt (re)processing. However, existing high-storage modulus vitrimers lack this melt-reprocessibility. This study reports on high storage obtained by grafting vinyltrimethoxysilane onto high-density polyethylene (HDPE) using silyl ether crosslinker, bis[3-(trimethoxysilyl)propyl]amine. We also explored effects 2,2,6,6-tetramethyl-4-piperidinol and diethyl maleate these vitrimers. All reported herein prepared in one step via melt-extrusion without use any solvent or catalyst. These were characterized differential scanning calorimetry (DSC), Fourier-transform infrared spectroscopy, thermogravimetric analysis, dynamic mechanical analysis (DMA), calorimetry, testing. Selected melt-reprocessed six times assessed for changes their industry-relevant extrusion processing. is first its kind to offer a solvent-free, single-step approach synthesis from HDPE. exhibit an impact strength five higher relative conventional HDPE, very (1.58 MPa) at 180oC, full melt-reprocessability. Considering injection molding used, achieved significantly than generated compression molding, which commonly used previous research.

Language: Английский

Citations

0
Monodisperse polyhydroxyalkanoate nanoparticles as self-sticky and bio-resorbable tissue adhesives DOI

Soo Kyeong Jang,

Geonho Song, Asila Osman

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 673, P. 647 - 656

Published: June 15, 2024

Language: Английский

Citations

0
Polyhydroxyalkanoates DOI

Seiichi Taguchi,

Shingo Matsumoto, Miwa Yamada

et al.

Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Citations

0
Upcycling CO2 and bio-derived furan into degradable plastic monomer via coupling of photocatalysis and thermocatalysis DOI
Qi Liu,

Chengyang Li,

Tingting Wang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 502, P. 157519 - 157519

Published: Nov. 12, 2024

Language: Английский

Citations

0
Syndioselective Ring-Opening Polymerization of β-Lactones Enabled by Dimethylbiphenyl-Salen Yttrium Complexes DOI
Lei Yang, Hao‐Yi Huang, Yu‐Ting Huang

et al.

ACS Macro Letters, Journal Year: 2024, Volume and Issue: 14(1), P. 57 - 63

Published: Dec. 23, 2024

Polyhydroxyalkanoates (PHAs) have served as promising alternatives to traditional petroleum-based plastics. Chemical synthesis of stereoregular PHAs via stereocontrolled ring-opening polymerization (ROP) racemic β-lactones was a desired strategy with formidable challenge. Herein, we developed class DiMeBiPh-salen yttrium complexes that adopted cis-α configuration for stereoselective ROP rac-β-butyrolactones (rac-BBL) and rac-β-valerolactone (rac-BVL). Notably, catalyst Y5 promoted robust TOF up 104 h-1 furnished syndiotactic P3HB, P3HV, P(3HB)-co-P(3HV) copolymers Pr values 0.95. Varying the compositions in offered an intriguing opportunity fine tune thermal properties. Our kinetic study supported polymeryl exchange mechanism. This work demonstrated system could serve new catalytic framework β-lactones, which leverages design polymerization.

Language: Английский

Citations

0
Access to Polyhydroxyalkanoates with Diverse Syndiotacticity via Polymerization by Spiro‐Salen Complexes and Insights into the Stereocontrol Mechanism DOI
Hao‐Yi Huang,

Bai‐Hao Ren,

Min Xie

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Abstract Polyhydroxyalkanoates (PHAs) have attracted broad interest as promising sustainable materials to address plastic pollution and resource scarcity. However, the chemical synthesis of stereoregular PHAs via ring‐opening polymerization (ROP) has long been an elusive endeavor. In this contribution, we exploited a robust spiro‐salen yttrium complex ( Y3 ) catalyst successfully prepare syndiotactic with diverse pendent groups. Simply altering ratio enantiomeric catalysts allowed access syndiotacticity P r =0.5–0.99, from sticky oil tough materials), delivering tunable thermal properties (glass transition temperature, T g −52 70 °C melting m 38 223 °C). A combined experimental computational study suggested polymeric exchange mechanism could boost activity control syndioselectivity.

Language: Английский

Citations

0
Regulating Stereomicrostructure, Circularity and Functionality of Synthetic PHAs DOI
Ethan C. Quinn, Celine R. Parker, Sophie M. Guillaume

et al.

Polymer Chemistry, Journal Year: 2024, Volume and Issue: 16(5), P. 512 - 520

Published: Dec. 31, 2024

Synthetic poly(3-hydroxyalkanoate)s are empowered by catalyst-controlled stereomicrostructures, monomer-designed melt-processability and chemical recyclability, pendant-group-regulated functionalities.

Language: Английский

Citations

0