Ricardo J. E. Andrade

Position: Assistant Professor

Area of interest: Composites

Email: ricardo.andrade@mackenzie.br

Office: 415

Phone: +55 (11) 2766 7387

 

 

Ricardo Jorge Espanhol Andrade was born in 1982, in Barreiro, Portugal. He obtained his B.S. degree in Polymer Engineering from University of Minho, Portugal, in 2005, and his M.S. in Formulation and Technology of Product from University of Huelva in Spain, in 2008. Furthermore, he was awarded a Fellowship from Portuguese Science and Education Ministry to pursue his PhD at Case Western Reserve University in Macromolecular Science and Engineering in Cleveland, USA, and finished in 2014. During his Ph.D. he worked on Polymer Rheology and Processing. Upon completion his Ph.D. work, he moved to a post-doctoral research position Institute of Electronic Structure and Laser of the Foundation for Research and Technology-Hellas (IESL-FORTH), Crete, Greece, where he worked until October 2015 on Colloids Rheology, more specifically on Shear Thickening Systems. He is currently Assistant Professor at Graphene and Nanomaterials Research Center (MackGraphe). His current research cover topics such as understanding the complex relationship between thermo-mechanical history and the structure and morphology of polymer nanocomposites based on 2D materials (graphene, MoS2, hBN, phosphorene, etc.). It is also part of his research the study of colloids dispersions of 2D materials under shear and extensional flows. His research intends to understand the fundamental mechanisms involved in the morphology and structure development of a polymer-2D nanocomposite, with the aim to improve their properties for broad range applications.

 

 

Rheology and Processing of Polymer-2D Nanocomposites

The reinforcement of polymers has attracted considerable interest in recent years, with several attempts to combine the advantageous processing properties of polymers with the desired characteristics of specific fillers, ending with dramatic improvements, such as mechanical, barrier, electrical and thermal properties, using a relatively low amount of fillers. These improvements can be achieved more easily as the filler size is decreased to the micro- and nano- scale, which takes advantage of enhanced surface properties and increased interfacial interactions.

Shear and extensional flows are of great interest because many industrially important processes on polymer processing industry, such as, extrusion, injection, fiber and melt spinning, blow molding, and film blowing, are dominated by the fluids’ shear and extensional properties. The study of these flows allows an insight into the molecular structure of the materials to be gained. Nevertheless, there is a lack of studies on the structure development of polymer-2D nanocomposites in shear and elongational flows, for most part due to the advances in 2D materials are still recent. With the aim to contribute to this area and to develop advanced materials in collaboration with industry, the research activities focus as well to understand the material behavior during the industrial processing.

 

 

Figure 1. Some examples where polymer-2D nanocomposites can be applied.

Colloids Suspensions of 2D Nanomaterials

Colloidal suspensions of 2D nanomaterials are multiphase systems in which there is a continuous phase, a liquid (solvent), and a suspended phase, solid particles (2D nanoparticles). Due to their importance for fundamental research as well as for applications in various areas such as high-performance paints, 3D structures for medical applications, electronic devices through printing, and energy-absorbing applications, such as antiballistic devices and sports equipment, the research group intends to understand the interactions and the rheological properties of colloids suspensions of 2D particles.