Preparation and characterization of polyurethane/POSS hybrid aqueous dispersions from mono-amino substituted POSS

A series of linear polyurethane (PU) aqueous dispersions modified by polyhedral oligomeric silsesquioxane (POSS) was synthesized by incorporating various amounts (ca. 2–10 wt%) of a secondary amino-terminated monofunctional POSS in hexamethylene diisocyanate trimer (HDI-T), hexamethylene diisocyanat...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2017-02, Vol.74 (2), p.517-529
Main Authors: Hao, Tonghui, Liu, Xiaoyang, Hu, Guo-Hua, Jiang, Tao, Zhang, Qunchao
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Contact angle
Dispersions
Engineering Sciences
Fourier transforms
Gel chromatography
Hexamethylene diisocyanate
Hydrophobicity
Mechanical properties
Molecular weight
Organic Chemistry
Original Paper
Physical Chemistry
Physical properties
Polyhedral oligomeric silsesquioxane
Polymer Sciences
Polymers
Polyurethane resins
Propionic acid
Soft and Granular Matter
Solvents
Spectrum analysis
Tensile strength
Thermodynamic properties
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Summary:A series of linear polyurethane (PU) aqueous dispersions modified by polyhedral oligomeric silsesquioxane (POSS) was synthesized by incorporating various amounts (ca. 2–10 wt%) of a secondary amino-terminated monofunctional POSS in hexamethylene diisocyanate trimer (HDI-T), hexamethylene diisocyanate, poly(tetramethylene-oxide) and 2,2-bis(hydroxymethyl)propionic acid. Results from the gel permeation chromatography, Fourier-transform infrared spectroscopy, transmission electron microscopy, and X-ray diffraction showed that the POSS monomers could be effectively introduced into the PU matrices based on HDI-T to obtain stable aqueous and homogenous PU/POSS hybrid dispersions. The thermal properties of the hybrids do not significantly affect the degradation mechanism of the PU. The physical properties of the PU/POSS hybrid films changed, with a notable increase in tensile strength and surface hydrophobicity.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-016-1727-y