Comparative study on the properties of cellulose nanofiber (CNF) and cellulose nanocrystals (CNC) reinforced 1C-PUR adhesive bonded wooden joints

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F22%3A43921718" target="_blank" >RIV/62156489:43410/22:43921718 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41320/22:92942

Result on the web

<a href="https://doi.org/10.1016/j.conbuildmat.2022.128262" target="_blank" >https://doi.org/10.1016/j.conbuildmat.2022.128262</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2022.128262" target="_blank" >10.1016/j.conbuildmat.2022.128262</a>

Result language

angličtina

Original language name

Comparative study on the properties of cellulose nanofiber (CNF) and cellulose nanocrystals (CNC) reinforced 1C-PUR adhesive bonded wooden joints

Original language description

Polyurethane (PUR) adhesive was reinforced with cellulose nanocrystal (CNC) and acetylated cellulose nanofiber (CNF) to enhance its bonding performance. The reinforced adhesive was used to prepare lap joints using spruce and beech wood. Cyclic moisture exposure was carried out to assess the effect of moisture variation on the bond performance. Elastic modulus and shear strength were determined to ascertain the bonding behavior of adhesives. Reinforcement of PUR with nanocellulose significantly improved (33%) the elastic modulus in spruce wood while the improvement was only marginal (12%) in beech wood. Cyclic moisture exposure reduced the elastic modulus of CNC reinforced PUR in both the species, while the value increased by 5% for 0.5% CNF reinforced PUR joints. Reinforcement of PUR with nanocellulose significantly improved the shear strength. The improvent was more in spruce (45%) as compared to beech wood (35%). Moisture exposure caused a significant improvement in the shear strength of pure and reinforced PUR bonded joints, however, the values decreased for spruce wood except for 0.5% CNF loading where it was marginally higher. SEM micrographs revealed improved bond line with nanocellulose reinforcement in both the wood species. The glass transition temperature of PUR adhesive slightly decreased due nanocellulose reinforcement.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20502 - Paper and wood

Project

<a href="/en/project/EF16_019%2F0000803" target="_blank" >EF16_019/0000803: Advanced research supporting the forestry and wood-processing sector´s adaptation to global change and the 4th industrial revolution</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Construction and Building Materials

ISSN

0950-0618

e-ISSN

1879-0526

Volume of the periodical

344

Issue of the periodical within the volume

15 August

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

128262

UT code for WoS article

000861321000004

EID of the result in the Scopus database

2-s2.0-85132961321