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EnglishInorganic-organic hybrid copolymers are promising materials where the size of the inorganic/organic domains, the phase continuity and the interface between the domains play an important role in their behavior. Two types of hybrid copolymers composed of 3-butynoate-substituted zirconium-oxoclusters covalently bonded to a (3-mercaptopropyl)trimethoxysilane or a vinyltrimethoxysilane matrix are investigated in bulk. Their properties are directly correlated with the degree of condensation of the silanes and the alkyne-3-mercaptopropyl or alkyne-vinyl interface. Both copolymers show storage moduli and glass-transition temperatures (T gG″) above 130 MPa and 230°C. However, the more impressive results are achieved with the (3-mercaptopropyl)trimethoxysilane copolymer where a T gG″ of about 300°C holds over six dynamical mechanical spectroscopy analyses. In addition to their excellent thermo-mechanical proprieties, the copolymers show unreacted 3-mercaptopropyl or vinyl groups which could be employed either in direct usage of the materials or for post-functional modifications.
| Titolo: | High temperature resistant silane/zirconium-oxocluster hybrid copolymers containing "free" thiol/ene functionalities in the polymer matrix |
| Autori: | Maggini, Simona; Cappelletto, Elisa; Di Maggio, Rosa |
| Autori Unitn: | |
| Titolo del periodico: | JOURNAL OF APPLIED POLYMER SCIENCE |
| Anno di pubblicazione: | 2013 |
| Numero e parte del fascicolo: | 4 |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1002/app.37940 |
| Handle: | http://hdl.handle.net/11572/94346 |
| Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |
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