One-Pot Synthesis of CO2-Based Polylactide-b-Poly(ether carbonate)-b-Polylactide Triblock Copolymers and Their Mechanical Properties

Article Chemistry, Multidisciplinary

One-Pot Precision Synthesis of AB, ABA and ABC Block Copolymers via Switchable Catalysis

Zhenjie Yang et al.

Summary: Switchable catalysis has been developed and applied in the one-pot selective copolymerization from complex mixtures, leading to the synthesis of multi-block copolymers with structural diversity and functionality.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

添加到收藏夹

Article Polymer Science

Expanding the Scope of Boron-Based Ate Complexes by Manipulating Their Reactivity: The Case of Cyclic Esters and Their (Co)Polymers

Jingjing Liu et al.

Summary: The value and merit of triethylborane (TEB)-based ate complexes for the synthesis of various oxygenated polymers have been demonstrated. This study expanded the scope of TEB-based initiating systems to anionically polymerize cyclic esters and to copolymerize them with propylene oxide (PO). The addition of hydrogen-bonding donors promoted a fast and controlled ring-opening polymerization (ROP) of cyclic esters. The controlled nature of the polymerization was confirmed by characterization techniques. These borane-based ate complexes showed great potential for the synthesis of copolymers.

MACROMOLECULES (2022)

添加到收藏夹

Article Polymer Science

A Lewis Pair as Organocatalyst for One-Pot Synthesis of Block Copolymers from a Mixture of Epoxide, Anhydride, and CO2

Jinbo Zhang et al.

Summary: The ROCOP of epoxide/anhydride/CO2 is a promising process using CO2 as a renewable resource. However, the synthesis of block copolymers from mixed monomers through a one-pot polymerization remains a great challenge. This study successfully synthesized CO2-based block copolymers using an organocatalyst, presenting a potential direction for future research.

MACROMOLECULES (2021)

添加到收藏夹

Article Polymer Science

Triethylborane-Assisted Synthesis of Random and Block Poly(estercarbonate)s through One-Pot Terpolymerization of Epoxides, CO2, and Cyclic Anhydrides

Vamshi K. Chidara et al.

Summary: Poly(ester-carbonate) copolymers were synthesized by one-pot copolymerization of epoxides with anhydrides and CO2 activated by triethylborane (TEB). The feeding ratio of anhydrides to epoxides determined the structure of the copolymers, with random and tapered ester structures observed. Terpolymerizations and block copolymerizations were compared in terms of the obtained copolymers' structures and properties.

MACROMOLECULES (2021)

添加到收藏夹

Article Multidisciplinary Sciences

Closed-loop recycling of polyethylene-like materials

Manuel Haeussler et al.

Summary: Plastics are crucial components in modern technology but are often disposed of after use. Chemical recycling offers an alternative to retain high-performance properties, but traditional polyethylene poses challenges due to its inert nature and structure.

NATURE (2021)

添加到收藏夹

Article Multidisciplinary Sciences

Polyethylene materials with in-chain ketones from nonalternating catalytic copolymerization

Maximilian Baur et al.

Summary: By introducing reactive polar groups into polyethylene chains, phosphinophenolate-coordinated nickel complexes can facilitate the copolymerization of ethylene with carbon monoxide to create a new type of polymer with photodegradability. This material retains desirable material properties and exhibits environmental friendliness.

SCIENCE (2021)

添加到收藏夹

Article Multidisciplinary Sciences

Chemically recyclable thermoplastics from reversible-deactivation polymerization of cyclic acetals

Brooks A. Abel et al.

Summary: The study introduces a reversible-deactivation CROP method using a commercial initiator and catalyst to synthesize poly(1,3-dioxolane) with comparable tensile strength to some commodity polyolefins. Depolymerization of PDXL using strong acid catalysts efficiently returns monomer, even from a waste mixture of commodity plastics. This efficient polymerization method offers a tough thermoplastic material that can undergo selective depolymerization to monomer.

SCIENCE (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

Mg(ii) heterodinuclear catalysts delivering carbon dioxide derived multi-block polymers

Gloria Rosetto et al.

Summary: Carbon dioxide derived polymers are becoming useful materials in various applications, requiring more active and selective catalysts for structural diversity. Highly active catalysts can exhibit controllable selectivity for enchainment of mixtures of different compounds, leading to the creation of new polymers with regular carbon dioxide and biomass derived linkages.

CHEMICAL SCIENCE (2021)

添加到收藏夹

Article Polymer Science

Copolymerization of lactide, epoxides and carbon dioxide: a highly efficient heterogeneous ternary catalyst system

Xiang Li et al.

Summary: A novel heterogeneous ternary catalyst system (TCS) comprising of SalenCo(III), zinc glutarate (ZnGA) and PPNCl has been proposed, demonstrating intermolecular cooperation between cobalt and zinc to form multiblock copolymers. The TCS shows high activity and selectivity in the controlled copolymerization of mixed monomers.

POLYMER CHEMISTRY (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary