Second CELLUWOOD Newsletter

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Laminated Strong Eco-Material for BuildingContruction 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 potentia l resin manufacture with an interest for further

commercial exploitation of the CELLUWOOD technology in particular

lignin-based gluing system.

C E L L U WO O D F I N A L W O R K S H O P

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


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P R O J E C T O U T C O M E S

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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 weredeveloped, 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 compositecolumns 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 oflignin-modified PF resin and a suitable hardener to

promote polymer setting.The final outcome was glue with a greener charactercapable of setting in cold pressing in order to be used

as binder for glulam building materials in small andmedium sized companies. This adhesive is of

phenolformaldehyde type resin where 50% of phenolhas been replaced by lignin. This new lignin-based

gluing system can be effectively used in theproduction of glulam beams and columns with a

performance even better then with conventionalgluing systems.

The low emission lignin modified PF resin is easy toapply and cheap to buy.

Eco-beams fabricated with the modified PF resin

showed better mechanical properties thancommercially available MUF (melamine-

urea-formaldehyde) beams and are suitable foroutdoor constructions.

The developed gluing system based on lignin-PF resin

presents a clear environmental improvementregarding commercial ones: 74% vs MUF and 86% vs

PU (measured with Ecoindicator 99 method). Besidesthis environmental advantage, it has lower cost and

shows better technical performances.

BIORESINS


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Nanocellulose reinforced adhesives have been

another novelty concept developed within theproject. Two types of glue were proposed and

tested: nanocellulose reinforced epoxy andnanocellulose reinforced casein glues. The potential

of nanocellulose is that it achieves strong andreliable 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, andprovide much efficient and high strength resin

systems for laminated timber industries.

However, it must be noted that current early stageof nanocellulose development, the cost of the

nanocellulose is still high, although a lower dosageof the nanocellulose epoxy could be used for the

same bonding outcomes, which could offset the

costs.

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Nanocellulose epoxy resin and casein

resin for eco-beams

www.celluwood.com

Ultimate outcomes of the CELLUWOOD project are theeco-beams and eco-columns.

The production process involved used of greenerbinding systems based on more natural raw materials.

The processing technologies have been tailored with

the application of the bioresin systems. This could bedone with the conventional production facilities andgluing lines in the companies. In particular, good

results were showing the eco beams which were usingthe lignin-based gluing system. These beams showed

good mechanical properties in some cases better thanconventional beams. They are also suitable for outdoor

use.

An important aspect of the use of project developedgluing systems is that they do not need any extra

investment in production lines.

CelluWood

Inorganic core material for eco columnsIn addition to the different gluing systems the projectalso developed and tested the Inorganic Core Material(ICM) for eco-columns. It is a novelty idea of using

wood residues from timber beam and columnproduction as core material for the eco-columns.

The key component for ICM is a modified sawdust and

gypsum mixture formulation. It is envisaged that oncethe interface between the ICM and enclose lumber is

improved, the ICM composite columns can potentiallybe commercialised to use wood residues and reduce

raw material costs for the column production. ICMrepresent a versatile product, cheaper than solid

timber.

Structural construction products:

Eco-beams and eco-columns


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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 StenhouseProject [email protected]

Prof. Dr. Mizi FanProject [email protected]

"This publication has been produced with the assistance of the European Union. The contents of this publication are the sole responsibility of

project co nsortium and can in no way be t aken to refl ect the v iews of the Europea n Unio n

The resin products developed within CELLUWOOD

project can potentially replace existing MUF and epoxyresin application. Therefore the promotion of the

technology will target resin manufacturers, laminatedtimber industry and related sectors. The promotion of

the technology to resin and glulam manufacturersworldwide could be envisaged in collaboration with

lignin and nanocellulose producers.

The novel ICM concept using a gypsum and sawdustmixture as core material for columns can find its place

in the wood construction market, in particular in thewall building and column manufacturing sector.

Further commercialisation of the eco-beams and

eco-columns can be of interest to small businesses ofcraftsmen (woodworkers, refurnishing workers,

restorers, repairers) and SMEs clusters, as theseproducts 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 beimplemented and included in product portfolios for

commercial activities (e.g. promotion of eco-friendlydesigned building). Finally, the increasing DIY sector is

a targeted customer of the new developedeco-products.

MSc. Miguel ngel AbinProject Coordination and Management at [email protected] Web and [email protected]

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Second CELLUWOOD Newsletter