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/...
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

Monodispersed Renewable Particles by Cascade and Density Gradient Size Fractionation to Advance Lignin Nanotechnologies

Jingqian Chen, Jing Tian, Nianjie Feng, Like Ning, Dong Wang, Bin Zhao, Tianyu Guo, Junlong Song, Orlando J. Rojas 2024

Regenerated cellulose properties tailored for optimized triboelectric output and the effect of counter-tribolayers

Christina Dahlström, Alireza Eivazi, Malin Nejström, Renyun Zhang, Torbjörn Pettersson, Haider Iftikhar, Orlando J. Rojas, Bruno Medronho, Magnus Norgren 2024

Benchmarking the Humidity-Dependent Mechanical Response of (Nano)fibrillated Cellulose and Dissolved Polysaccharides as Sustainable Sand Amendments

M-Haidar A. Dali, Roozbeh Abidnejad, Mohamed Hamid Salim, Mamata Bhattarai, Monireh Imani, Orlando J. Rojas, Luiz G. Greca, Blaise L. Tardy 2024

Lignin beyond the status quo: Recent and emerging composite applications

Mahyar Fazeli, Sritama Mukherjee, Hossein Baniasadi, Roozbeh Abidnejad, Muhammad Mujtaba, Juha Lipponen, Jukka Seppälä, Orlando Rojas Gaona 2024

In Situ Biofabrication of Microbial Cellulose Capsules Carrying Cubosomes: Toward Colon Targeted Multidrug Delivery

Filipe V. Ferreira, Nazanin Z. Ezazi, Caio G. Otoni, Ana Carolina Aguiar, Jhonatan R.O. Bianchi, João H. Lopes, Danilo M. dos Santos, Luiz G. Greca, Hernane S. Barud, Hélder A. Santos, Orlando J. Rojas, Luiz Henrique Capparelli Mattoso 2024

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

Processing factors affecting roughness, optical and mechanical properties of nanocellulose films for optoelectronics

Joice Jaqueline Kaschuk, Yazan Al Haj, Joaquin Valdez Garcia, Aleksi Kamppinen, Orlando J. Rojas, Tiffany Abitbol, Kati Miettunen, Jaana Vapaavuori 2024

Controlling the Nematic Liquid Crystallinity of Cellulose Nanocrystals with an Alcohol Ethoxy Sulfonate Surfactant

Johanna Majoinen, Lotta Gustavsson, Owies Wani, Samira Kiefer, Ville Liljeström, Orlando J. Rojas, Patrice Rannou, Olli Ikkala 2024