Controlled radical polymerization techniques enable the synthesis of polymers with predetermined molecular weights, narrow weight distributions, and controlled architectures. Moreover, these approaches have been routinely shown to result in retained end-group functionality that can be reactivated continue polymerization. However, reactivation end groups under conditions instead promote depropagation is a viable route initiate depolymerization potentially closed-loop recycling from polymer...

In this study, we present an efficient approach for the depolymerization of poly(methyl methacrylate) (PMMA) copolymers synthesized via conventional radical polymerization. By incorporating low mol % phthalimide ester-containing monomers during polymerization process, colorless and transparent polymers closely resembling unfunctionalized PMMA are obtained, which can achieve >95% reversion to methyl methacrylate (MMA). Notably, our catalyst-free bulk method exhibits exceptional efficiency,...

Abstract We demonstrate that electrochemical‐induced decarboxylation enables reliable post‐polymerization modification and degradation of polymers. Polymers containing N ‐(acryloxy)phthalimides were subjected to electrochemical under mild conditions, which led the formation transient alkyl radicals. By installing these redox‐active units, we systematically modified pendent groups chain ends polyacrylates. This approach enabled production poly(ethylene‐ co ‐methyl acrylate) poly(propylene‐...

We describe a methodology of post-polymerization functionalization to enable subsequent bulk depolymerization monomer by utilizing mechanochemical macro-radical generation. By harnessing ultrasonic chain-scission in the presence N-hydroxyphthalimide methacrylate (PhthMA), we successfully chain-end functionalize polymers promote bulk, achieving up 82 % poly(methyl methacrylate) (PMMA) and poly(α-methylstyrene) (PAMS) within 30 min. This method yields high-purity that can be repolymerized....

Single-electron transfer (SET)-induced decarboxylative backbone radical generation was exploited to produce statistical olefin-acrylate copolymers. Quenching of the with an H atom donor yielded ethylene or propylene repeat units.

Chain-end reactivation of polymethacrylates generated by reversible-deactivation radical polymerization (RDRP) has emerged as a powerful tool for triggering depolymerization at significantly milder temperatures than those traditionally employed. In this study, we demonstrate how the facile poly(butyl methacrylate) (PBMA) can be leveraged to selectively skew molecular weight distribution (MWD) and predictably alter viscoelastic properties blended PBMA mixtures. By mixing polymers with...

International Journal of Social Science Studies (IJSSS) would like to acknowledge the following reviewers for their assistance with peer review manuscripts this issue. Many authors, regardless whether IJSSS publishes work, appreciate helpful feedback provided by reviewers. Their comments and suggestions were great help authors in improving quality papers. Each listed below returned at least one issue.Reviewers Volume 13, Number 1Laura Diaconu Maxim, "Alexandru Ioan Cuza University" Iasi,...

This study introduces a novel approach to depolymerize polystyrene in the absence of solvent at significantly reduced temperatures through incorporation thermally labile comonomer. Specifically, we employ N-(methacryloxy)phthalimide (PhthMA) as comonomer with an activated ester capable triggered decarboxylation. Thermal treatment enables generation backbone radicals that promote β-scission and subsequent unzipping. These analogs up 91% reversion monomer under 2 h lower than those required...

Sonochemically initiated reversible addition-fragmentation chain transfer polymerization (sono-RAFT) is achieved by employing low-frequency ultrasound (f = 40 kHz) at high monomer concentrations, including bulk, for the first time. The utilization of cost-effective sonication baths can promote use sono-RAFT polymer and materials discovery. In this report, we continually replenish argon or nitrogen in solution to induce transient cavitation events, which create initiating radical species from...

We report on a mild and efficient method to degrade poly(β-amino esters) (PBAEs) poly(amido amines) (PAMAMs) via Cope elimination. Oxidation of backbone tertiary amines N-oxides allowed for the spontaneous abstraction acidic β ester/amide protons, resulting in subsequent chain cleavage. show that quantitative PBAE degradation can be achieved within 15 min several organic solvents by treatment with meta-chloroperbenzoic acid. Despite being more robust substrate than PBAEs, PAMAMs could also...

Abstract We describe a methodology of post‐polymerization functionalization to enable subsequent bulk depolymerization monomer by utilizing mechanochemical macro‐radical generation. By harnessing ultrasonic chain‐scission in the presence N ‐hydroxyphthalimide methacrylate (PhthMA), we successfully chain‐end functionalize polymers promote bulk, achieving up 82 % poly(methyl methacrylate) (PMMA) and poly(α‐methylstyrene) (PAMS) within 30 min. This method yields high‐purity that can be...

Abstract We demonstrate that electrochemical‐induced decarboxylation enables reliable post‐polymerization modification and degradation of polymers. Polymers containing N ‐(acryloxy)phthalimides were subjected to electrochemical under mild conditions, which led the formation transient alkyl radicals. By installing these redox‐active units, we systematically modified pendent groups chain ends polyacrylates. This approach enabled production poly(ethylene‐ co ‐methyl acrylate) poly(propylene‐...

International Journal of Social Science Studies (IJSSS) would like to acknowledge the following reviewers for their assistance with peer review manuscripts this issue. Many authors, regardless whether IJSSS publishes work, appreciate helpful feedback provided by reviewers. Their comments and suggestions were great help authors in improving quality papers. Each listed below returned at least one issue.Reviewers Volume 12, Number 5Bishnu Prasad Dahal, Tribhuvan University, NepalFahri ÖZSUNGUR,...

$CuGa_3Se_5$ is a promising candidate material with wide band gap for top cells in tandem photovoltaic (PV) and photoelectrochemical (PEC) devices. However, traditional CdS contact layers used other chalcopyrite absorbers are not suitable due to the higher position of its conduction minimum. $Mg_xZn_{1-x}O$ transparent oxide adjustable as function magnesium composition, but direct application hindered by surface oxidation. Here, investigated (n-type buffer or window) pretreated $Cd^{2+}$...