Swelling and adhesion characteristics of lignin-filled polyurethane sealant

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DOIResolve DOI: http://doi.org/10.1163/156856194X00177
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Journal titleJournal of Adhesion Science and Technology
Pages473484; # of pages: 12
Subjectswelling; adhesion; lignin; polyurethane seala; adhesives; buildings; Adhésifs et mastics
AbstractPreviously, polyurethane (PU)-lignin polyblend sealants from the point of view of adhesion tovarious substrates, morphology based on scanning electron microscopy, and miscibility based on differential scanning calorimetry (DSC) and 13C nuclear magnetic resonance (NMR) were studied. In this study the same polyblends together with PU filled with a few mineral fillers were used. Swelling tests were applied to establish the number average molecular weight between crosslinks of the PU and to assess the degree of interaction between various fillers including different types of lignin and the PU matrix. Lignins were found to restrict less the degree of swelling of PU than that by the Sillitin (siliceous clay)-Titanox Ti02 3.17:1 wt/wt mixture. Data based on the swelling method show that lignins do not interact with the elastomer matrix to as great an extent as Sillitin/Titanox filler mixture, a finding which is in good agreement with the former DSC and NMR results.
Publication date
PublisherTaylor and Francis
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC publication
This is a non-NRC publication

"Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.

NRC numberNRCC 39006
NPARC number20375124
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Record identifier409da701-6ded-41d2-81c6-c9b74dad5149
Record created2012-07-23
Record modified2017-08-16
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