You are here: Home
/ Publication Information
Title: Thermal Instability of Fats Relative to Surface Wettability of Yellow Birchwood (Betula lutea)
Author: Hemingway, Richard W.;
Source: TAPPI 52(11):2149-2155
Publication Series: Miscellaneous Publication
Description: The surface wettability and fats of yellow birchwood were examined in an attempt to illustrate how heat-induced changes in wood fats might be related to changes in surface wettability. A marked reduction of surface wettability accompanied heating of yellow birchwood. The degree of water repellency imparted to the wood was highly dependent upon heating temperature and time. Acetone extraction of wood prior to heating to 105°C prevented a change in wettability and increased the surface wettability of wood heated at higher temperatures. Examination of the fats after heating indicated little hydrolysis and considerable oxidation of the unsaturated fatty acids and esters. The amounts of free fatty acids present in fresh, air-dried, or heated wood were far too low to approach amounts considered necessary to influence surface wettability. The preponderance of linoleic acid ester and its rapid oxidation suggest that oxidation products from this ester might be responsible for the observed changes in wettability.
Keywords: Betula lutea, cell structure, esters, fats, fatty acids, fibers, harwoods, heat, hydrolosis, oxidation, surface properties, surface wettability tests, thermal stability, wettability
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to email@example.com to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Hemingway, Richard W. 1969. Thermal Instability of Fats Relative to Surface Wettability of Yellow Birchwood (Betula lutea). TAPPI 52(11):2149-2155
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility