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Recycling of PVC/PU waste and reuse in PVC formulations: Structure‐property relationship
Author(s) -
Grigoryeva O.,
Fainleib A.,
Stepanenko L.,
Sergeeva L.,
Pissis P.
Publication year - 2005
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20343
Subject(s) - materials science , plasticizer , vinyl chloride , dynamic mechanical analysis , differential scanning calorimetry , composite material , polyvinyl chloride , polyurethane , plastics extrusion , polymer , copolymer , physics , thermodynamics
The possibility of poly(vinyl chloride) (PVC) plasticization and modification by regenerated PVC/polyurethane (PU) blends (PVC/PU R ), obtained after partial thermochemical destruction of the PU foam‐backed PVC‐sheet (soundproof materials waste), has been studied. The partial thermochemical destruction of the PU foam‐backed PVC‐sheet was carried out using alkanolamine in a one‐screw extruder. The destruction product was a thermoplastic mixture of PVC and regenerated linear PUs, applicable for reuse without any purification and fractionation. The influence of processing conditions on structure‐property relationships for the PVC/PU R blends was studied using the methods of differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), size exclusion chromatography (SEC), and mechanical testing. It has been established that PVC/PU R blends can be reused as an effective polymer plasticizer for PVC resin (PVC r ) and as a modifier for plasticized PVC (PVC p ). POLYM. ENG. SCI. 45:801–808, 2005. © 2005 Society of Plastics Engineers