Pitch component interactions with model surfaces by surface plasmon resonance

Gerard Murray, Karen Stack, Douglas McLean, Wei Shen, Gil Garnier

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The affinity of pitch components for carboxylated dextran (CD) surfaces is studied by optical microscopy and surface plasmon resonance (SPR). CD is used as a model of the cellulose structure of pulp fibres. The dynamics of adsorption and desorption are followed in real time by SPR. The parameters investigated are temperature and pitch concentration. Particle size and shape are found to be strongly related to the pitch components in the extract and parametric considerations in the preparation process. Pitch components exhibit a very low affinity for CD at 20°C However this affinity increases as the CD surface is modified by deposited pitch components themselves. The affinity of pitch components for CD and especially for themselves drastically increases with temperature.

Original languageEnglish
Title of host publicationAppita Annual Conference Proceedings
Number of pages8
Publication statusPublished - 1 Dec 2007
Event61st Appita Annual Conference and Exhibition - Gold Coast, Australia
Duration: 6 May 20079 May 2007

Publication series

NameAppita Annual Conference
ISSN (Print)1443-5454


Conference61st Appita Annual Conference and Exhibition
CityGold Coast

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