A Pathway toward a New Era of Open-Cell Polyurethane Foams-Influence of Bio-Polyols Derived from Used Cooking Oil on Foams Properties

Materials
Maria KurańskaJoanna Kubacka

Abstract

In order to create greener polyurethane (PUR) foams, modified used cooking oils (UCO) were applied as starting resources for the synthesis of bio-polyols. The bio-polyols were produced using transesterification of UCO with diethylene glycol (UCO_DEG) and triethanolamine (UCO_TEA). Next, open-cell PUR foams were synthesized by replacing 20, 40, 60, 80 and 100% of the petrochemical polyol with the bio-polyol UCO_DEG or UCO_TEA. It was observed that an increasing bio-polyol content (up to 60%) led to an increase of the closed cell content. However, a further increase in the bio-polyol content up to 100% resulted in foam cell opening. The bio-foams obtained in the experiment had an apparent density of 13-18 kg/m3. The coefficient of thermal conductivity was determined at three different average temperatures: 10, 0 and -10 °C. The PUR bio-foams modified with bio-polyol UCO_TEA had lower values of thermal conductivity, regardless of the average temperature (35.99-39.57 mW/m·K) than the foams modified with bio-polyol UCO_DEG (36.95-43.78 mW/m·K). The compressive strength of most of the bio-foams was characterized by a higher value than the compressive strength of the reference material (without bio-polyol). Finally, it was observed th...Continue Reading

Software Mentioned

Aphelion TM
FOAMAT

Related Concepts

Related Feeds

Atherosclerosis Disease Progression

Atherosclerosis is the buildup of plaque on artery walls, causing stenosis which can eventually lead to clinically apparent cardiovascular disease. Find the latest research on atherosclerosis disease progression here.