Sano, Yuki published the artcileControlled radical depolymerization of chlorine-capped PMMA via reversible activation of the terminal group by ruthenium catalyst, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is chlorine capped PMMA controlled radical depolymerization ruthenium catalyst.
This paper deals with a preliminary study in controlled radical depolymerization, that is a unimodal polymer is converted into monomer while maintaining the narrow mol. weight distribution. Thus, our effort has been directed to unzipping-type depolymerization triggered by the reversible activation of the terminal group. An indenyl-based ruthenium catalyst afforded depolymerization of a chlorine-capped poly(Me methacrylate) (PMMA-Cl) at relatively high temperature (>100 °C). Interestingly, the SEC curve shifted to lower mol. weight as the time proceeds, and the monomer, that is MMA, definitely generated and the amount almost corresponded to the decrease in mol. weight The depolymerization was eventually saturated due to the equilibrium monomer concentration, but evaporation of the generating monomer followed by an addition of solvent and re-heating allowed further progress of depolymerization We have thus demonstrated four consecutive depolymerizations via the evaporation methodol. resulting in the unimodal SEC curve shift to lower mol. weight
European Polymer Journal published new progress about Depolymerization. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Safety of 2,5,8,11,14-Pentaoxapentadecane.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem