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Poly (ethylene terephthalate) synthesis with catalysts derived from chrysotile asbestos

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DOI: 10.4236/ns.2010.26070    7,653 Downloads   16,156 Views   Citations

ABSTRACT

The chrysotile asbestos was converted to the forsterite-type compounds by calcination at 740 and 800oC (F7-740 and F7-800), which were used as a catalyst for the polycondensation of bis(hydroxyethyl) terephthalate affording poly (ethylene terephthalate). The obtained forsterite-type compounds did not show any catalytic activity. However, the products obtained by simply treating them with acetic acid significantly promoted the polymerization that produced a THFinsoluble polymer. It was found that the polymer prepared with the acetic acid-treated F7-740 at 160oC for 2 h showed a 93% yield and the number average molecular weight of 6.4 × 103. The observed catalytic activity was higher than that for the acetic acid-treated magnesium oxide, as well as the typical polycondensation catalysts, such as magnesium acetate and antimony oxide.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Habaue, S. , Takahashi, Y. , Hosogoe, Y. , Yamashita, H. and Kajiwara, M. (2010) Poly (ethylene terephthalate) synthesis with catalysts derived from chrysotile asbestos. Natural Science, 2, 557-562. doi: 10.4236/ns.2010.26070.

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