We modified synthetic isoprene rubber by means of the in situ generation of silica particles through the sol–gel process starting from tetraethoxysilane (TEOS) as an inorganic oxide precursor. Different reaction condi- tions were investigated with variations in the initial TEOS content, the reaction time of the sol–gel process, and the presence of a coupling/surfactant agent (octyltriethoxy- silane). Organic–inorganic hybrid materials with a silica content up to 70 phr were obtained with the complete con- version of TEOS to silica for a long enough sol–gel reac- tion time. A very homogeneous dispersion of silica particles was observed in all cases together with a very good adhesion between the filler and matrix. The size of the in situ generated silica was controlled by the appropri- ate addition of octyltriethoxysilane. Swelling and extrac- tion tests and dynamic mechanical analysis indicated that the vulcanization process of isoprene rubber was per- turbed by the sol–gel process; this led to a slight decrease in the crosslinking degree. However, a significant reinforc- ing effect due to the presence of silica particles was observed for all of the investigated samples.

Isoprene Rubber Filled with Silica Generated In Situ / Messori, Massimo; Maurizio, Fiorini. - In: JOURNAL OF APPLIED POLYMER SCIENCE. - ISSN 0021-8995. - STAMPA. - 119:(2011), pp. 3422-3428. [10.1002/app.32992]

Isoprene Rubber Filled with Silica Generated In Situ

MESSORI, Massimo;
2011

Abstract

We modified synthetic isoprene rubber by means of the in situ generation of silica particles through the sol–gel process starting from tetraethoxysilane (TEOS) as an inorganic oxide precursor. Different reaction condi- tions were investigated with variations in the initial TEOS content, the reaction time of the sol–gel process, and the presence of a coupling/surfactant agent (octyltriethoxy- silane). Organic–inorganic hybrid materials with a silica content up to 70 phr were obtained with the complete con- version of TEOS to silica for a long enough sol–gel reac- tion time. A very homogeneous dispersion of silica particles was observed in all cases together with a very good adhesion between the filler and matrix. The size of the in situ generated silica was controlled by the appropri- ate addition of octyltriethoxysilane. Swelling and extrac- tion tests and dynamic mechanical analysis indicated that the vulcanization process of isoprene rubber was per- turbed by the sol–gel process; this led to a slight decrease in the crosslinking degree. However, a significant reinforc- ing effect due to the presence of silica particles was observed for all of the investigated samples.
2011
119
3422
3428
Isoprene Rubber Filled with Silica Generated In Situ / Messori, Massimo; Maurizio, Fiorini. - In: JOURNAL OF APPLIED POLYMER SCIENCE. - ISSN 0021-8995. - STAMPA. - 119:(2011), pp. 3422-3428. [10.1002/app.32992]
Messori, Massimo; Maurizio, Fiorini
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/648636
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 15
  • ???jsp.display-item.citation.isi??? 13
social impact