In this work three commercial flexible polyurethane foams used for mattress have been submitted to artificial accelerated weathering in a climatic chamber in order to investigate its effect on their structure and some functional properties of interest for bedding applications. FT-IR and colorimetric analyses demonstrated that during weathering all the three foams undergo oxidation of the polyether soft segments. The resulting changes in the chemical structure, morphology and molecular mobility of the foams affected their comfort in static conditions, giving a general reduction of the hysteresis loss, surface firmness and sag factor, more significant for the foams having slow recovery rate after compression.
EFFECT OF ACCELERATED WEATHERING ON STRUCTURE AND COMFORT FACTORS OF COMMERCIAL POLYURETHANE FOAMS FOR MATTRESS
SCARFATO, Paola;DI MAIO, Luciano;D'ARIENZO, LUCIA;INCARNATO, Loredana
2015-01-01
Abstract
In this work three commercial flexible polyurethane foams used for mattress have been submitted to artificial accelerated weathering in a climatic chamber in order to investigate its effect on their structure and some functional properties of interest for bedding applications. FT-IR and colorimetric analyses demonstrated that during weathering all the three foams undergo oxidation of the polyether soft segments. The resulting changes in the chemical structure, morphology and molecular mobility of the foams affected their comfort in static conditions, giving a general reduction of the hysteresis loss, surface firmness and sag factor, more significant for the foams having slow recovery rate after compression.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
