NDLI: Organic–inorganic polyurethanes with 3,13-dihydroxypropyloctaphenyl double-decker silsesquioxane chain extender

Content Provider	Royal Society of Chemistry (RSC)
Author	Zheng, Sixun Wei, Kun Wang, Lei
Copyright Year	2013
Abstract	In this contribution, we reported the synthesis of organic–inorganic polyurethanes with polyhedral oligomeric silsesquioxane (POSS) in the main chains. Toward this end, 3,13-dihydroxypropyloctaphenyl double-decker silsesquioxane (DDSQ) was synthesized; this POSS diol was used as a chain extender to obtain hybrid polyurethanes with DDSQ in the main chains. By controlling the molar ratio of 3,13-dihydroxypropyloctaphenyl DDSQ to 1,4-butanediol (BDO), organic–inorganic polyurethanes were obtained with a content of DDSQ up to 48 wt%. The results of 1H nuclear magnetic resonance spectroscopy (NMR) and gel permeation chromatography (GPC) showed that 3,13-dihydroxypropyloctaphenyl, DDSQ, can be successfully used as a chain extender to afford linear organic–inorganic polyurethanes. Differential scanning calorimetry (DSC) showed that the organic–inorganic polyurethanes displayed enhanced glass transition temperatures (Tg's) compared to control polyurethane; the Tg's increased with increasing content of DDSQ in the main chains. Compared to control polyurethane, the organic–inorganic polyurethanes displayed improved thermal stability in terms of thermogravimetric analysis (TGA). With the inclusion of DDSQ in the main chains, the organic–inorganic polyurethanes displayed enhanced surface hydrophobicity.
Starting Page	1491
Ending Page	1501
Page Count	11
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	4
Issue Number	5
Journal	Polymer Chemistry
DOI	10.1039/c2py20930f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Glass transition DDSQ Differential scanning calorimetry Diol 1,4-Butanediol Thermogravimetric analysis DSC Polyurethane Nuclear magnetic resonance spectroscopy Nuclear magnetic resonance Hydrophobe Gel permeation chromatography
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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