Modified rubber seed oil based polyurethane foams

作者：Saetung Nitinart^*; Somjit Suthira; Thongkapsri Pradit; Tulyapitak Tulyapong; Saetung Anuwat^*

来源：Journal of Polymer Research, 2016, 23(3): 58.

DOI：10.1007/s10965-016-0959-8

• Rubber seed oil
• Polyurethane foam
• Polyol
• Modification
• Vegetable oil
• Precursor

In this work, rubber seed oil (RSO) was extracted with cyclohexane at room temperature for 24 h. The yield of RSO was about 40 %. The RSO was purified by using sodium hydroxide to eliminate some free fatty acids. Then the RSO was modified by simultaneous epoxidation and hydroxylation. Hydroxylated RSO (HRSO) had the hydroxylation extents 120 and 230 mgKOH/g with 2 h and 4 h reaction times, respectively. The chemical structures of the oils were studied by FT-IR and H-1-NMR, and they were characterized also in other ways. Polyurethane foam samples based on the HRSOs were successfully prepared, and their physico-mechanical and thermal properties were also studied, with varied NCO index and water content in the formulations. The PUF230 had better thermal stability and compressive strength but lower density than the PUF120. Both the NCO index and the water content had large effects on density, cell size, and compressive strength of the polyurethane foams.

• 出版日期2016-2-25