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Galimberti M, Barbera V, Guerra S, Conzatti L, Castiglioni C, Brambilla L, Serafini A. Biobased Janus molecule for the facile preparation of water solutions of few layer graphene sheets. RSC Adv 2015. [DOI: 10.1039/c5ra11387c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A biobased Janus molecule was used to prepare water solutions of nano-stacks made by few layer graphene.
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Affiliation(s)
- Maurizio Galimberti
- Politecnico di Milano
- Department of Chemistry
- Materials and Chemical Engineering “G. Natta”
- 20131 Milano
- Italy
| | - Vincenzina Barbera
- Politecnico di Milano
- Department of Chemistry
- Materials and Chemical Engineering “G. Natta”
- 20131 Milano
- Italy
| | - Silvia Guerra
- Politecnico di Milano
- Department of Chemistry
- Materials and Chemical Engineering “G. Natta”
- 20131 Milano
- Italy
| | - Lucia Conzatti
- National Council of Research
- Institute for the Study of Macromolecules
- 16149 Genova
- Italy
| | - Chiara Castiglioni
- Politecnico di Milano
- Department of Chemistry
- Materials and Chemical Engineering “G. Natta”
- 20131 Milano
- Italy
| | - Luigi Brambilla
- Politecnico di Milano
- Department of Chemistry
- Materials and Chemical Engineering “G. Natta”
- 20131 Milano
- Italy
| | - Andrea Serafini
- Politecnico di Milano
- Department of Chemistry
- Materials and Chemical Engineering “G. Natta”
- 20131 Milano
- Italy
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Galimberti M, Cipolletti V, Musto S, Cioppa S, Peli G, Mauro M, Gaetano G, Agnelli S, Theonis R, Kumar V. RECENT ADVANCEMENTS IN RUBBER NANOCOMPOSITES. RUBBER CHEMISTRY AND TECHNOLOGY 2014. [DOI: 10.5254/rct.14.86919] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
ABSTRACT
Nanocomposites were prepared via melt blending, based on organically modified clays (OC), carbon nanotubes (CNT), and graphitic nanofillers made by a few layers of graphene (nanoG). In particular, nanocomposites based on a hybrid filler system, with a nanostructured filler such as carbon black (CB), are examined. It is shown that low crystalline order in the interlayer space of a layered nanofiller (such as OC and nanoG) leads to easier delamination. Nanofillers give rise to filler networking at low concentration, particularly in the presence of CB. Hybrid filler systems lead to nanocomposites' having initial moduli that are much higher than those calculated through the sum of the initial modulus of composites containing either only CB or only the nanofiller. Nanofillers enhance the matrix modulus by a multiplication factor that depends only on the nanofiller type and content, regardless of whether the matrix is a neat or a CB-filled polymer. Furthermore, the filler–polymer interfacial area is shown to be a parameter able to correlate the mechanical behavior of both nano-CNT and nanostructured (CB) fillers. By plotting values of the composite initial modulus versus the filler–polymer interfacial area, points due to CB, CNT, and the hybrid CB-CNT system lie on the same curve.
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Affiliation(s)
- Maurizio Galimberti
- Politecnico di Milano, Department of Chemistry, Materials and Chemical Engineering “G. Natta,” Via Mancinelli 7, 20131 Milano, Italy
| | - Valeria Cipolletti
- Politecnico di Milano, Department of Chemistry, Materials and Chemical Engineering “G. Natta,” Via Mancinelli 7, 20131 Milano, Italy
| | - Sara Musto
- Politecnico di Milano, Department of Chemistry, Materials and Chemical Engineering “G. Natta,” Via Mancinelli 7, 20131 Milano, Italy
| | - Serena Cioppa
- Politecnico di Milano, Department of Chemistry, Materials and Chemical Engineering “G. Natta,” Via Mancinelli 7, 20131 Milano, Italy
| | - Giulia Peli
- Politecnico di Milano, Department of Chemistry, Materials and Chemical Engineering “G. Natta,” Via Mancinelli 7, 20131 Milano, Italy
| | - Marco Mauro
- Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
| | - Guerra Gaetano
- Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
| | - Silvia Agnelli
- Università degli Studi di Brescia, Via Branze 38, 25123 Brescia, Italy
| | - Riccò Theonis
- Università degli Studi di Brescia, Via Branze 38, 25123 Brescia, Italy
| | - Vineet Kumar
- Università degli Studi di Milano-Bicocca, Via R. Cozzi 53, 20125 Milano, Italy
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