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IR-Spektren von TMP und CTMP, hergestellt aus Kiefernholz und mitteldichten Faserplatten (MDF)

IR-spectra of TMP and CTMP prepared from pine wood and medium density fibreboards (MDF)
 
: Roffael, E.; Dix, B.; Behn, C.; Bär, G.

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European journal of wood and wood products 67 (2009), Nr.2, S.233-235
ISSN: 0018-3768
ISSN: 1436-736X
Deutsch
Zeitschriftenaufsatz
Fraunhofer WKI ()

Abstract
IR-spectra of TMP and CTMP prepared from pine wood and UF-bonded MDF made from pine wood show characteristic differences. The typical band for carbonyl groups (C=O-groups) at wave number about 1740 cm(-1) is strong in pine wood, but appears relatively weak in TMP and especially in CTMP made thereof. In UF-bonded MDF made from pine wood the band at about 1740 cm-1 is very weak compared to that in pine wood. Moreover, no significant difference in the IR-spectrum between TMP and CTMP made from UF-bonded MDF seems to exist. This is attributed to the fact that during thermo-mechanical pulping of UF-bonded boards hydrolytic degradation of the resin takes place enhancing the formation of ammonia which increases the pH-value of the fibres and leads therefore to chemo-thermo-mechanical pulping.

: http://publica.fraunhofer.de/dokumente/N-101774.html