Tag Archive for: nanotechnology

Linn Berglund and Kristiina Oksman share a smile in the hydrogel development laboratory, with kelp on display. Photo by courtesy of Kristiina Oksman.

Innovator of Year Award to Bio4Energy Nanotechnology Experts

Bio4Energy experts at nanotechnology have been selected to receive an ‘Innovator of the Year’ award by their home organisation Luleå University of Technology, Sweden for their continued efforts to develop bio-based solutions for industry. The award motivation highlights the creation of medical and health care applications as a particularly successful avenue.

LTU pro vice-chancellor Charlotte Winberg will be handing over the award at the university’s Innovation Day 5 November.

“We are very happy about the award and will focus even more on innovations so that our research can benefit society”, researches Kristina Oksman and Linn Berglund wrote in a press release from LTU.

The pair has successfully developed hydrogels from kelp seaweed that are being commercialised. Moreover, a smart dressing for wound healing, made by turning woody residue into nanofibre networks that take the form of a transparent gel—complemented by an equally transparent film overlay—is in preclinical testing.

The pair has successfully developed hydrogels from kelp seaweed that is being commercialised.

Moreover, a smart dressing for wound healing, made by turning woody residue into nanofibre networks that take the form of a transparent gel—complemented by an equally transparent film overlay—is in preclinical testing.

“What makes our innovations unique [are the fact] that they combine sustainability with versatility and functionality. We can tailor the biomaterials for different applications, making them useful in a variety of industries, from medicine to packaging”, associate professor Berglund said.

Last year, professor Oksman and Berglund made the 100 List hosted by the Royal Swedish Academy of Engineering Sciences for the invention of a sturdy composite material made from scrap textiles and plastic waste.

The List is published annually to indicate research innovations created at Swedish universities that could provide an economic and societal benefit, were they to be adopted by industry and commercialised.

Award motivation

“Oksman and Berglund’s work has great potential to contribute to societal benefits, particularly by reducing healthcare costs while also creating environmentally friendly alternatives for industry”, the press release said;

“Their bio-based solutions are not only energy-efficient to produce but can also replace oil-based materials, thereby reducing the use of fossil fuels and harmful chemicals”.

Recently, their Bionanocomposites’ research group has made bio-based films from woody residue after use as an underlying substance or layer for growing exotic mushrooms for human consumption. The mushrooms feed off this substrate layer to grow and break up the polymers of the wood during the while.

Recently, their Bionanocomposites’ research group has also made bio-based films from woody residue after use as an underlying substance or layer for growing exotic mushrooms for human consumption, in collaboration with Shaojun Xiong and colleagues at the Swedish University of Agricultural Sciences.

The mushrooms feed off this substrate layer to grow and break up the polymers of the wood during the while. This means that the researchers do not have to use chemicals to achieve their aim of breaking down the polymer lignin—the glue that binds together the main wood polymers cellulose, hemicellulose and lignin—since the mushroom carries out this service.

As part of the Bio4Energy research environment, Oksman and Berglund have gone from success to success. While Oksman was one of Bio4Energy’s founding research leaders, Berglund came in later as her student; rose through the ranks and never left since.

“Bio4Energy has been great for our research. We have had the freedom to invent new things. I do not think we could have done this without Bio4Energy”, Oksman told Bio4Energy Communications.

Contacts

Linn Berglund – Bio4Energy Biopolymers and Biochemical Conversion, affiliation with Luleå University of Technology

Kristiina Oksman – Bio4Energy Biopolymers and Biochemical Conversion, affiliation with Luleå University of Technology

Related projects

Sustainable packaging materials from renewable raw materials sources – Bio4Energy

Revitalising forest waste into microalgal and bacterial cellulose membranes with tailored properties for sustainable food packaging, Green Tech – Bio4Energy

Relation of wood structure and chemistry to nanocellulose extraction and properties – Bio4Energy

Development of energy-efficient processing technology of wood biomass into nanofibres and biocomposites through the use of fungal pre-treated substrates, accessing the sustainability goals – Bio4Energy

Investigating the electrochemical functionality of Norway spruce bark biochar and polymer composites – Bio4Energy

Utilising the natural composition of industrial bio-based residues for efficient separation of functional nanofibers – Bio4Energy

Related news

New Stride in Wound Healing Expected, as Researchers Add New Material for Medical Dressings – Bio4Energy

Breakthrough Innovation: Hydrogels from Norwegian Kelp to Be Commercialised – Bio4Energy

Inventions by Bio4Energy Researchers Highlighted by Royal Academy for Future Potential – Bio4Energy

Overlay to medical dressing made from woody nanofibre networks. Nanofibre base gel in left-bottom corner. Images by courtesy of Linn Berglund. Collage by Anna Strom.

New Stride in Wound Healing Expected, as Researchers Add New Material for Medical Dressings

On the back of successfully introducing sea kelp as a base material for hydrogels used in wound healing—and selling the rights to Norwegian firm Alginor ASA—Bio4Energy researchers are back with a deep-dive into making medical dressings for complex or chronic wounds. This time, the base material will be made from woody residues from trees.

Linn Berglund of Luleå University of Technology received a grant from national trade union Swedish Forest Industries, official voice of the sector, to place woody residues as the base material of choice in the treatment of wounds that require a certain level moisture to heal, but need to be rid of excess liquid formed at various stages of the healing process.

Based on a series of pre-studies, she will be using nanotechnology to make networks of wood fibres that hold just the right amount of moisture at the base of the dressing, which will have a transparent overlay.

“We are moving one step closer to the perfect wound dressing. We already have promising results with dressings that take up a lot of excess liquid in moist environments”.

“We are moving one step closer [to the perfect wound dressing]. We already have promising results with dressings that take up a lot of excess liquid in moist environments”, according to Berglund, researcher and long-standing member of Bio4Energy’s team of experts at nanotechnology.

“When it comes to burns for example, the liquid should be transported away, not closed in”, she added.

The efficacy of the nanofibre network, together with the transparent top part, should allow for the healing to be monitored without the need for frequent changes of the dressing.

“The transparency of the material creates unique possibilities”, Berglund told Bio4Energy Communications.

The project will run at least until the end of next year. By that time, the researchers expect to know more about the way in which the dressing materials react at various degrees of swelling due to liquid retention. We are talking about characterisation down to nano scale.

“We are going to use atomic force microscopy [coupled with] trials enabled by new equipment for rheology measurements”.

Atomic Force Microscopy is a very-high-resolution type of scanning probe technique, with resolutions in the order of fractions of a nanometre, according to Wikipedia. 

Other legs of the set up include life cycle assessment studies to check the environmental impacts; not only of the wound dressing at the end of life, but also of the production. Moreover expensive chemicals are used in the production. The researchers are going to look for ways to reduce the chemical input while obtaining similar results.

The grant is part of a Young Researchers Award, awarded in spring of this year, with funding from a Gunnar Sundblad Foundation.

For more information

Young Researchers Award (Page in Swedish)

Swedish Forest Industries

Contact

Linn Berglund, Bio4Energy Biopolymers and Biochemical Conversion Technologies

Related News

Breakthrough Innovation: Hydrogels from Norwegian Kelp to Be Commercialised – Bio4Energy

Related projects

Relation of wood structure and chemistry to nanocellulose extraction and properties – Bio4Energy

Utilising the natural composition of industrial bio-based residues for efficient separation of functional nanofibers – Bio4Energy