Results 11 to 20 of about 153,008 (251)

Bulk Depolymerization of PMMA via Pendent Group Activation [PDF]

open access: yes, 2023
In this study, we present an efficient approach for the depolymerization of poly(methyl methacrylate) (PMMA) copolymers synthesized via conventional radical polymerization.
Brent, Sumerlin   +5 more
core   +2 more sources

Variable Amine Spacing Determines Depolymerization Rate in Polydiketoenamines [PDF]

open access: yes, 2023
The design of circular polymers has emerged as a necessity due to the lack of efficient recycling methods for many commodity plastics, particularly those used in durable products. Among the promising circular polymers, polydiketoenamines (PDKs) stand out
Kristin, Persson   +3 more
core   +2 more sources

Systematic investigation of the mechanocatalytic partial depolymerization of cellulose towards oligomeric glycans [PDF]

open access: yes, 2023
The selective depolymerization of cellulose is a major challenge and usually leads to the formation of monosaccharides as main products. Once depolymerized, various platform chemicals such as 5 hydroxymethylfurfural and furfural can be obtained from ...
Dagmar, Hoffmann   +4 more
core   +1 more source

Metathesis Cascade-Triggered Depolymerization of Enyne Self-Immolative Polymers [PDF]

open access: yes, 2021
A novel class of enyne self-immolative polymers (SIPs) capable of me-tathesis cascade-triggered depolymerization is reported. Studies on mod-el compounds established 1,6-enyne structures for efficient metathesis cascade reactions.
Jia, Niu   +2 more
core   +2 more sources

Electrochemical Depolymerization of Lignin in a Biomass-based Solvent [PDF]

open access: yes, 2022
The successive breakdown of the lignin macromolecule into smaller units is the key to generate high value-added products from this complex plant polyphenol. Obtaining well-defined aromatic compounds is, therefore, an important step towards the production
Márcia Gabriely, Alves da Cruz   +8 more
core   +2 more sources

Reversing RAFT Polymerization: Near-Quantitative Monomer Generation via a Catalyst-Free Depolymerization Approach [PDF]

open access: yes, 2021
The ability to reverse controlled radical polymerization and regenerate the monomer would be highly beneficial for both fundamental research and applications, yet has remained very challenging to achieve. Herein, we report a near-quantitative (up to 92%)
Nghia P., Truong   +2 more
core   +2 more sources

Solvent-Free Chemical Recycling of Polymers made by ATRP and RAFT polymerization: High-Yielding Depolymerization at Low Temperatures [PDF]

open access: yes, 2023
Although controlled radical polymerization is an excellent tool to make precision polymeric materials, reversal of the process to retrieve the starting monomer is far less explored despite the significance of chemical recycling.
Richard, Whitfield   +4 more
core   +2 more sources

Polymerization, Stimuli-induced Depolymerization, and Precipitation-driven Macrocyclization in a Nitroaldol Reaction System [PDF]

open access: yes, 2022
Dynamic covalent polymers of different topology have been synthesized from an aromatic dialdehyde and α,ω-dinitroalkanes via the nitroaldol reaction. All dinitroalkanes yielded dynamers with the dialdehyde, where the length of the dinitroalkane chain ...
Olof, Ramstrom, Yunchuan, Qi
core   +2 more sources

Co-and Ca-phosphate-based catalysts for the depolymerization of organosolv eucalytpus lignin [PDF]

open access: yes, 2015
Depolymerization of purified organosolv eucalyptus wood lignin by the heterogeneous catalysts, cobalt polyphosphate (CoP2O6) and calcium phosphate (β-CaP2O6) was investigated. A total syringol yield of 16.7% was achieved with β-CaP2O6 in a methanol/water
Zhang, Zhanying   +5 more
core   +1 more source

Depolymerization-Induced Electrochemiluminescence of Insoluble Porphyrin in Aqueous Phase

open access: yes, 2020
Exploring efficient and robust electrochemiluminescence (ECL) performance of liposoluble porphyrins in aqueous phase for analytical purposes especially for important biological targets is still very challenging.
Jing Chen   +15 more
core   +1 more source

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