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

Best Paper Award 2015 Bioresource Technology, Netherlands

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

Imerys FiberLean Prize IMERYS, USA

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

Foreign Member of the Finnish Academy of Science and Letters

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

Fellow of the American Chemical Society

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

Divisional Service Award, American Chemical Society

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

Research groups

  • Bio-based Colloids and Materials, Visiting Professor

Publications

Surface functionalization and size modulate the formation of reactive oxygen species and genotoxic effects of cellulose nanofibrils

Kukka Aimonen, Monireh Imani, Mira Hartikainen, Satu Suhonen, Esa Vanhala, Carlos Moreno, Orlando J. Rojas, Hannu Norppa, Julia Catalán 2022 Particle and Fibre Toxicology

Bacterial nanocellulose enables auxetic supporting implants

Rubina Ajdary, Roozbeh Abidnejad, Janika Lehtonen, Jani Kuula, Eija Raussi-Lehto, Esko Kankuri, Blaise Tardy, Orlando J. Rojas 2022 Carbohydrate Polymers

Simple synthesis of self-assembled nacre-like materials with 3D periodic layers from nanochitin via hydrogelation and mineralization

Junhua Xu, Liang Liu, Juan Yu, Yujun Zou, Wenhui Pei, Lili Zhang, Wenbo Ye, Long Bai, Zhiguo Wang, Yimin Fan, Qiang Yong, Orlando J. Rojas 2022 Green Chemistry

Upcycling agro-industrial blueberry waste into platform chemicals and structured materials for application in marine environments

Guillermo Reyes, Claudia M. Pacheco, Estefania Isaza-Ferro, Amaidy Gonzalez, Eva Pasquier, Serguei Alejandro-Martin, Luis E. Arteaga-Perez, Romina R. Carrillo, Isabel Carrillo-Varela, Regis Teixeira Mendonca, Colleen Flanigan, Orlando J. Rojas 2022 Green Chemistry

Pickering emulgels reinforced with host-guest supramolecular inclusion complexes for high fidelity direct ink writing

Bo Pang, Rubina Ajdary, Markus Antonietti, Orlando Rojas, Svitlana Filonenko 2022 Materials Horizons

Plant-Based Structures as an Opportunity to Engineer Optical Functions in Next-Generation Light Management

Joice Jaqueline Kaschuk, Yazan Al Haj, Orlando J. Rojas, Kati Miettunen, Tiffany Abitbol, Jaana Vapaavuori 2022 Advanced Materials

Structured Ultra-Flyweight Aerogels by Interfacial Complexation: Self-Assembly Enabling Multiscale Designs

Milad Kamkar, Ahmadreza Ghaffarkhah, Rubina Ajdary, Yi Lu, Farhad Ahmadijokani, Sameer E. Mhatre, Elnaz Erfanian, Uttandaraman Sundararaj, Mohammad Arjmand, Orlando J. Rojas 2022 Small

Machine learning as a tool to engineer microstructures: Morphological prediction of tannin-based colloids using Bayesian surrogate models

Soo Ah Jin, Tero Kämäräinen, Patrick Rinke, Orlando J. Rojas, Milica Todorovic 2022 MRS Bulletin