Dimanganese decacarbonyl catalyzed visible light induced ambient temperature depolymerization of poly(methyl methacrylate)

Visible Light Induced Degradation of Poly(methyl methacrylate‐co‐methyl α‐chloro acrylate) Copolymer at Ambient Temperature

“…It is known that the bromine atom is easier to be abstracted resulting in higher concentration of free radicals in a short time interval that may lead to coupling reactions instead of degradation. [ 56,64 ]…”

“…[ 45–55 ] More recently, a novel approach from our laboratory demonstrated visible light‐induced unzipping type depolymerization of PMMA derivatives using dimanganese decacarbonyl, Mn 2 (CO) 10 , to overcome the necessity of elevated temperatures in the field of depolymerization. [ 56 ]…”

“…[45][46][47][48][49][50][51][52][53][54][55] More recently, a novel approach from our laboratory demonstrated visible light-induced unzipping type depolymerization of PMMA derivatives using dimanganese decacarbonyl, Mn 2 (CO) 10 , to overcome the necessity of elevated temperatures in the field of depolymerization. [56] Mn 2 (CO) 10 chemistry offers promising alternatives over conventional methods. [57] Mechanisms involve visible light induced decomposition of the Mn-Mn bond to yield Mn(CO) 5 capable of abstracting halogens from organo-halides to form free radicals.…”

Metal Free, White LED Induced, Room Temperature Degradation of Methyl Methacrylate - Methyl Haloacrylate Copolymers

“…Previous depolymerization and degradation experiments revealed the advantage of chlorine over bromine arising from leaving characteristics. 23,24 Rapid abstraction of the halogens yields higher concentrations of free radicals on the polymer chain that may result in undesired radical coupling reactions to form branched structures. Therefore, P(MMA-co-MCA) degradation in diluted reaction conditions was initially employed.…”

“…Previously, our research group successfully depolymerized PMMA derivatives containing chlorine atoms at the chain end and the main chain respectively, by taking advantage of the halogen abstraction capabilities of Mn2(CO)10. 24 This approach allowed the depolymerization to occur even in ambient conditions. Light's nature played a key role in decreasing the need for heat as it transfers energy more efficiently and directly compared to conventional systems.…”