Nakatani, Hisayuki published the artcileNovel Recycling System of Polystyrene Water Debris with Polymer Photocatalyst and Thermal Treatment, COA of Formula: C28H52N2O4, the main research area is polystyrene hindered amine light stabilizer polymer photocatalyst thermal treatment.
A poly(styrene-block-acrylic acid) containing TiO2 gel (PS-b-PAA/TiO2) polymer photocatalyst had the same d. as PS and could provoke photocatalytic activity to PS particles in water. It showed photocatalytic activity to a PS containing a N-H type hindered amine light stabilizer (PS/LA-77) in water under the UV irradiation The mol. weight decrease was ca. 10%, showing that a weaker light source and different kind of hindered amine light stabilizer (HALS) should be employed. The phthalocyanine modified photocatalyst had the activity under visible light irradiation In addition, a N-OR type HALS (LA-81) loading worked as radical scavenger, showing that the PS autoxidation was certainly controlled. After the 144 h irradiation, the mol. weight was drastically decreased with the increases of heating temperature and time. When the heat treatment was performed by the enclosed sample with the aluminum foil, the mol. weight change behavior was considerably different between the PS and PS/LA-81. The difference was due to the chain scission mechanism. The intra-alkyl radical production in PS chain allowed controlling mol. weight by the heat treatment.
Journal of Polymers and the Environment published new progress about Autoxidation. 52829-07-9 belongs to class piperidines, name is Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate, and the molecular formula is C28H52N2O4, COA of Formula: C28H52N2O4.
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem