The society is demanding formaldehyde-free adhesives due to the proven health risks associated to their emissions. The industry is actively seeking alternatives such as methylene diphenyl diisocyanate (pMDI), nevertheless this adhesive presents a significant lack of tack. Tack is the property of adhesives to form a bond with a surface upon contact, in other words is the initial adhesive strength. An increase in the adhesive tack will decrease the risk of delamination of the wood composite and related manufacturing complications. We propose to use pectin and nanocellulose fibers (CNF) isolated from soybean hulls for the formulation of emulsions with pMDI.<br/>Isolated from any lignocellulosic feedstock using mechanical treatment, nanofibrillated cellulose (CNF) displays several benefits based on their nanosized dimensions, such as mechanical strength and high aspect ratio. Meanwhile the pectin is a heteropolysaccharide that is usually isolated from apple or citrus peel although it can be found in other sources. Pectin serves as gelling and stabilizing polymer in diverse specialty products in a wide range of industry applications.<br/>In this work, pectin and CNF from soybean hulls where isolated and used as additives for pMDI. A rheology-based method for measuring tack was used. Addition of CNF improves the stability of emulsions of pMDI, while pectin also positively affected the pMDI tack. Properties such as internal bond, wet modulus of elasticity and modulus of rupture, and thickness swelling were measured. Techno-economic analysis of the newly developed formulations will be discussed.<br/>

Pectin and nanocellulose from soybean hulls as partial substituents in methylene diphenyl diisocyanate adhesive formulations

Macromolecular Chemistry: The Second Century

[Author Benefits](https://scimeetings.acs.org/?utm_source=pubs_content_marketing&utm_medium=website&utm_campaign=0320_MCF_NPI_Launch_Spring_Homepage&ref=pubs_content_marketing)

[How to use SciMeetings](https://storage.googleapis.com/dl.morressier.com/acs/SciMeetings-ACSSpring2020-HowToGuide_M3020-Final.pdf)

[Frequently Asked Questions](https://storage.googleapis.com/dl.morressier.com/acs/SciMtng_ACSNMSp2020_FAQ_M3120_Final.pdf)

ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.