Inorganic-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.

High temperature resistant silane/zirconium-oxocluster hybrid copolymers containing "free" thiol/ene functionalities in the polymer matrix

Maggini, Simona;Cappelletto, Elisa;Di Maggio, Rosa
2013

Abstract

Inorganic-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.
4
Maggini, Simona; Cappelletto, Elisa; Di Maggio, Rosa
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11572/94346
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact