Orlando Rojas

Visiting Professor
Visiting Professor
T107 Bioproducts and Biosystems

Members of my BiCMat group conduct multidisciplinary research with our core activities involving biobased materials at different size scales, mainly those displaying large interfacial areas such as fibers (micro/nano fibers), fiber networks, particles and colloidal systems. Some examples of materials of interest include nano/microfibrillar cellulose, cellulose nanocrystals, lignin particles, fat colloids, chitin, alginates, proteins and biopolymer assemblies. Typical efforts in our labs involve thin films, cellulose derivatives, enzymes and bio-based dispersions, emulsions, foams, gels, aerogels and others. We study the adsorption behaviors of surfactants and biopolymers at interphases and at the solid/liquid and liquid/air interfaces using techniques such as piezoelectric and surface plasmon sensing, XPS and other spectroscopic techniques, AFM, imaging, light scattering, etc.

Full researcher profile
https://research.aalto.fi/...

Contact information

Phone number
+358505124227

Areas of expertise

Colloids, Nanotecnology, Nanofibrillar cellulose, Chemical Engineering, Cellulosic surfaces, Surface chemistry, Polymer physics, Soft matter, Nanocellulose

Honors and awards

Divisional Service Award, American Chemical Society

Award or honor granted for a specific work Department of Bioproducts and Biosystems Jan 2009

Fellow of the American Chemical Society

Award or honor granted for academic or artistic career Department of Bioproducts and Biosystems Jul 2013

Foreign Member of the Finnish Academy of Science and Letters

Award or honor granted for academic or artistic career Department of Bioproducts and Biosystems Jan 2017

Imerys FiberLean Prize IMERYS, USA

Award or honor granted for a specific work Department of Forest Products Technology Jan 2015

Nanotechnology Division Award TAPPI, USA

Award or honor granted for a specific work Department of Forest Products Technology Jan 2015

Best Paper Award 2015 Bioresource Technology, Netherlands

Award or honor granted for a specific work Department of Forest Products Technology Jan 2015

Research groups

  • Bio-based Colloids and Materials, Visiting Professor

Publications

Innovations in hydrogel-based manufacturing: A comprehensive review of direct ink writing technique for biomedical applications

Hossein Baniasadi, Roozbeh Abidnejad, Mahyar Fazeli, Juha Lipponen, Jukka Niskanen, Eero Kontturi, Jukka Seppälä, Orlando J. Rojas 2024 Advances in Colloid and Interface Science

Chitin-based pulps: Structure-property relationships and environmental sustainability

Luiz G. Greca, Ainara Azpiazu, Guillermo Reyes, Orlando J. Rojas, Blaise L. Tardy, Erlantz Lizundia 2024 Carbohydrate Polymers

Hollow Filaments from Coaxial Dry-Jet Wet Spinning of a Cellulose Solution in an Ionic Liquid: Wet-Strength and Water Interactions

Shiying Zhang, Guillermo Reyes, Alexey Khakalo, Orlando J. Rojas 2024 Biomacromolecules

Lignin nanoparticles as co-stabilizers and modifiers of nanocellulose-based Pickering emulsions and foams

Melissa B. Agustin, Neda Nematollahi, Mamata Bhattarai, Erfan Oliaei, Mari Lehtonen, Orlando Rojas Gaona, Kirsi S. Mikkonen 2023 Cellulose

Electrospun nanofibers of chitosan/polyvinyl alcohol/UiO-66/nanodiamond: Versatile adsorbents for wastewater remediation and organic dye removal

Farhad Ahmadijokani, Hossein Molavi, Addie Bahi, Stefan Wuttke, Milad Kamkar, Orlando J. Rojas, Frank Ko, Mohammad Arjmand 2023 Chemical Engineering Journal

Waste organic dye removal using MOF-based electrospun nanofibers of high amine density

Farhad Ahmadijokani, Hossein Molavi, Majed Amini, Addie Bahi, Stefan Wuttke, Tejraj M. Aminabhavi, Milad Kamkar, Orlando J. Rojas, Frank Ko, Mohammad Arjmand 2023 Chemical Engineering Journal

Monolithic nanocellulose films patterned with flower-shaped and other microstructures: A facile route to modulate topographical, wetting and optical properties

Gabriel Banvillet, Samantha Pritchard, Joice J. Kaschuk, Xuetong Shi, Monireh Imani, Yi Lu, Ayako Takagi, Milad Kamkar, Orlando J. Rojas 2023 Materials Today Nano

Endoglucanase effects on energy consumption in the mechanical fibrillation of cellulose fibers into nanocelluloses

Gabriela L. Berto, Bruno D. Mattos, Josman Velasco, Bin Zhao, Fernando Segato, Orlando J. Rojas, Valdeir Arantes 2023 International Journal of Biological Macromolecules

Controlling superstructure formation and macro-scale adhesion via confined evaporation of cellulose nanocrystals

Antonio M. Borrero-López, Luiz Garcia Greca, Orlando J. Rojas, Blaise L. Tardy 2023 Cellulose

Oleogels and reverse emulsions stabilized by acetylated Kraft lignins

Antonio M. Borrero-López, Ling Wang, Haiming Li, Tainise V. Lourençon, Concepción Valencia, José M. Franco, Orlando J. Rojas 2023 International Journal of Biological Macromolecules