The Celluwood project focused on developing eco-materials for construction, particularly lignin-based gluing systems, achieving enhanced mechanical properties for eco-beams compared to traditional materials. The project culminated in a workshop showcasing the results and potential commercial applications, with positive feedback from industry stakeholders. Future actions involve continuing the promotion of the technology to manufacturers and integrating eco-friendly products into various commercial activities.

1. Laminated Strong Eco-Material for Building
Contruction Made of Cellulose-Strengthened Wood
Cellunews
The final workshop of the CELLUWOOD project was held on 4th SEPTEMBER,
2014 at the Catalan Institute of Wood in Lleida, Spain. During the workshop
comprehensive outcomes of the CELLUWOOD project were presented and
the future exploitation of the project results was discussed. The project
outcomes were presented to the industry stakeholders and the research
community representatives. Some positive feedbacks on project developed
products and technology were obtained by the external workshop
participants who emphasised the high commercial and further research
potentials for some of the project outcomes. The useful contacts were
established with potential resin manufacture with an interest for further
commercial exploitation of the CELLUWOOD technology in particular
lignin-based gluing system.
CELLUWOOD FINAL WORKSHOP
ISSUE at glance
CELLUWOOD final workshop
Project outcomes
CELLUWOOD future
02/14
CelluWood
Bioresins
ECO beams and columns
CELLUWOOD CONSORTIUM
www.cellluwood.com
SEPTEMBER 2014

2. Cellunews
P R O J E C T O U T C O M E S
02/14 page 2
Lignin-based gluing system
The project results can be classified in two groups:
www.celluwood.comCelluWood
Project outcomes - summary
After three years of strong commitment from all
project partners and intensive development and
testing work, many important outcomes have
been achieved.
The more natural based adhesion systems were
developed, tested and applied in eco-beam and
eco-column lamination process. In particular, good
results were achieved with eco-beams. Eco-beams
fabricated with the modified PF resin showed better
mechanical properties than commercially available
Melamine Urea Formaldehyde (MUF) resin beams.
Another novelty concept which was developed and
tested was the inorganic core material (ICM). It is
envisaged that once the interface between the ICM
and enclose lumber is improved, the ICM composite
columns can potentially be commercialised to use
wood residues and reduce raw material costs for the
column production.
New adhesive, bonding and structural components:
lignin-based gluing system;
nanocellulose epoxy and casein resins for eco-beams;
inorganic core material for eco-columns.
Structural construction products:
eco-beams and eco-columns.
The best project results were achieved in producing
lignin-based gluing system consisting of
lignin-modified PF resin and a suitable hardener to
promote polymer setting.
The final outcome was glue with a “greener” character
capable of setting in cold pressing in order to be used
as binder for glulam building materials in small and
medium sized companies. This adhesive is of
phenol–formaldehyde type resin where 50% of phenol
has been replaced by lignin. This new lignin-based
gluing system can be effectively used in the
production of glulam beams and columns with a
performance even better then with conventional
gluing systems.
The low emission lignin modified PF resin is easy to
apply and cheap to buy.
Eco-beams fabricated with the modified PF resin
showed better mechanical properties than
commercially available MUF (melamine-
urea-formaldehyde) beams and are suitable for
outdoor constructions.
The developed gluing system based on lignin-PF resin
presents a clear environmental improvement
regarding commercial ones: 74% vs MUF and 86% vs
PU (measured with Ecoindicator 99 method). Besides
this environmental advantage, it has lower cost and
shows better technical performances.
BIORESINS

3. Cellunews
Nanocellulose reinforced adhesives have been
another novelty concept developed within the
project. Two types of glue were proposed and
tested: nanocellulose reinforced epoxy and
nanocellulose reinforced casein glues. The potential
of nanocellulose is that it achieves strong and
reliable bonds derived from the very high surface
area of the nano-particles relative to their size.
It has been proven that low addition of nano-
cellulose could significantly increase the bonding
performance of both adhesives.
Nanocellulose reinforced resins have the potential
to replace current used MUF and epoxy resins, and
provide much efficient and high strength resin
systems for laminated timber industries.
However, it must be noted that current early stage
of nanocellulose development, the cost of the
nanocellulose is still high, although a lower dosage
of the nanocellulose epoxy could be used for the
same bonding outcomes, which could offset the
costs.
02/14 page 3
Nanocellulose epoxy resin and casein
resin for eco-beams
www.celluwood.com
Ultimate outcomes of the CELLUWOOD project are the
eco-beams and eco-columns.
The production process involved used of “greener”
binding systems based on more natural raw materials.
The processing technologies have been tailored with
the application of the bioresin systems. This could be
done with the conventional production facilities and
gluing lines in the companies. In particular, good
results were showing the eco beams which were using
the lignin-based gluing system. These beams showed
good mechanical properties in some cases better than
conventional beams. They are also suitable for outdoor
use.
An important aspect of the use of project developed
gluing systems is that they do not need any extra
investment in production lines.
CelluWood
Inorganic core material for eco columns
In addition to the different gluing systems the project
also developed and tested the Inorganic Core Material
(ICM) for eco-columns. It is a novelty idea of using
wood residues from timber beam and column
production as core material for the eco-columns.
The key component for ICM is a modified sawdust and
gypsum mixture formulation. It is envisaged that once
the interface between the ICM and enclose lumber is
improved, the ICM composite columns can potentially
be commercialised to use wood residues and reduce
raw material costs for the column production. ICM
represent a versatile product, cheaper than solid
timber.
Structural construction products:
Eco-beams and eco-columns

4. Cellunews 02/14 page 4
PROJECT CONSORTIUM
InWood Developments Ltd (UK)
Tecnifusta Enginyeria SL (Spain)
CBD d.o.o. - Contemporary Building Design (Slovenia)
Chimar Hellas S.A. (Greece)
Research and Development Association for the Wood,
Furniture and Packaging industries AIDIMA (Spain)
Brunel University (UK)
InnovaWood asbl (Belgium)
CONTACT
Mr. Edward Stenhouse
Project Coordinator
edwardstenhouse@btconnect.com
Prof. Dr. Mizi Fan
Project Management
Mizi.Fan@brunel.ac.uk
"This publication has been produced with the assistance of the European Union. The contents of this publication are the sole responsibility of
project consortium and can in no way be taken to reflect the views of the European Union”
The resin products developed within CELLUWOOD
project can potentially replace existing MUF and epoxy
resin application. Therefore the promotion of the
technology will target resin manufacturers, laminated
timber industry and related sectors. The promotion of
the technology to resin and glulam manufacturers
worldwide could be envisaged in collaboration with
lignin and nanocellulose producers.
The novel ICM concept using a gypsum and sawdust
mixture as core material for columns can find its place
in the wood construction market, in particular in the
wall building and column manufacturing sector.
Further commercialisation of the eco-beams and
eco-columns can be of interest to small businesses of
craftsmen (woodworkers, refurnishing workers,
restorers, repairers) and SMEs clusters, as these
products provide an opportunity to expand and
complete their product offer.
C E L L U W O O D F U T U R E
Future actions
Project partners will continue to work on post-project
exploitation of the results. This will include:
- promotion of the technology to resin and glulam
manufacturers,
- collaboration with lignin and nanocellulose producers,
- post-project results dissemination to professionals
sector (architects woodworkers, refurnishing workers,
restorers, repairers) and SMEs clusters.
Also for architects and design studios the eco products
are of interest in the sense that they can directly be
implemented and included in product portfolios for
commercial activities (e.g. promotion of eco-friendly
designed building). Finally, the increasing DIY sector is
a targeted customer of the new developed
eco-products.
MSc. Miguel Ángel Abián
Project Coordination and Management at AIDIMA
comercial@aidima.es
InnovaWood
Project Web and Dissemination
office@innovawood.com