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In‐Situ Formation of BHET/Titanium Compound Nanocomposite and its Catalysis for Polyester
Author(s) -
Xin Guoying,
Sun Bin,
Wang Wei,
Zhu Liping,
Wu Wenhua,
Zhu Meifang,
Chen Yanmo,
Adler HansJurgen P.
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200750827
Subject(s) - titanium , catalysis , terephthalic acid , polyester , ethylene glycol , hydrolysis , nanocomposite , polymer chemistry , materials science , ethylene , polymerization , chemistry , chemical engineering , organic chemistry , polymer , composite material , engineering
Summary: The tetrabutylorthotitanate (TBOT) was hydrolyzed by H 2 O produced during the esterification of pure terephthalic acid (PTA) and ethylene glycol (EG), and the bis(2‐hydroxyethyl) terephthalate (BHET)/titanium compound nanocomposite was in‐situ formed. The effect of TBOT on the esterification and its product property has been investigated. The results show that the butyl alcohol from the hydrolysis of TBOT is almost distilled out with H 2 O and there has no effect on the chemical structure of BHET caused by the introducing of TBOT. A kind of novel titanium compound is manufactured during the esterification under the existence of TBOT, which shows slice‐like morphology from SEM micrographs and special XRD pattern with new diffraction peaks between 2‐Θ = 6.9° and 10.2°. It is found that the BHET/titanium compound nanocomposite can act as the catalyst of polymerization of poly(ethylene terephthalate) (PET). The PET resins synthesized by in‐situ formed catalyst have almost the same physicochemical properties with the commerced resins and have good spinnability.