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Madison, WI 53726-2398
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Title: Investigating The Reactivity Of Pmdi With Wood Cell Walls Using High-Resolution Solution-State Nmr Spectroscopy

Source: In: Proceedings 32nd annual meeting of the Adhesion Society, Inc. 2009 February 15-18. Savannah, GA. Blacksburg, VA: The adhesion Society, Inc. pp. 212-214; 2009

Author(s)Yelle, Daniel J.; Ralph, John; Frihart, Charles R.

Publication Year: 2009  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4707-2A

Abstract: Covalent bonds between an adhesive and wood are believed to improve bond durability. However, covalent bonds have never been unambiguously detected in an adhesive bondline. To determine whether an adhesive forms covalent bonds to wood, it must have the following characteristics: (1) be highly reactive with wood polymer hydroxyls, (2) be capable of permeating the cell wall, (3) exhibit strong wettability to wood, and (4) be amenable to study using a monofunctional model compound. Ideally the reaction between the monofunctional model compound and wood will produce distinct chemical shift differences between unreacted and reacted wood polymers in solution-state nuclear magnetic resonance (NMR) spectroscopy.

Keywords: Isocyanates, adhesives, glue, plant cell walls, adhesion, hydroxyl group, chemical reactions, nuclear magnetic resonance spectroscopy, loblolly pine, microstructure, wood moisture, urethane, spectrum analysis, lignin analysis, moisture, gluing, polymers, polymerization, bond strength, wood bonding, bonding, durability, polymeric diphenylme-thane diisocyanate, pMDI, penetration, moisture content, polyurea

Publication Review Process: Informally Refereed (Peer-Reviewed)

File size: 1,221 kb(s)

Date posted: 10/06/2010

This publication is also viewable on Treesearch:  view
RITS Product ID: 31208
Current FPL Scientists associated with this product (listed alphabetically)
Frihart, Charles R.
Research Chemist
Yelle, Daniel
Research Forest Products Technologist

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