Surface-initiated ring-opening metathesis polymerisation from cellulose fibres
2012 (English)In: POLYM CHEM-UK, ISSN 1759-9954, Vol. 3, no 3, 727-733 p.Article in journal (Refereed) Published
In this study, cellulose fibres have been grafted utilizing surface-initiated ring-opening metathesis polymerisation (SI-ROMP). Initially, a Grubbs' type catalyst was immobilized onto filter paper whereafter SI-ROMP of norbornene was performed from the surface of the fibres at three different reaction temperatures, room temperature (RT), 0 degrees C and -18 degrees C, and for different reaction times. The evaluation of the grafted cellulose was performed by contact angle measurements, FT-Raman spectroscopy, FE-SEM and TGA. After the grafting, all samples were clearly hydrophobic with weight increases up to over 100%. The FT-Raman spectroscopy analysis showed significant structural changes after polymerization for cellulose substrates polymerized at 0 degrees C and RT, confirming that a polymer was grafted from the surface. FE-SEM images verified that these samples are covered by polynorbornene and that the fibrillar structure of the native cellulose disappeared. For the samples grafted at -18 degrees C, no significant changes were seen with these analysis methods. However, SI-ROMP appears to be a versatile method to modify cellulose fibres.
Place, publisher, year, edition, pages
Royal Society of Chemistry, 2012. Vol. 3, no 3, 727-733 p.
IdentifiersURN: urn:nbn:se:kth:diva-90921DOI: 10.1039/c2py00554aISI: 000300049900023ScopusID: 2-s2.0-84857335793OAI: oai:DiVA.org:kth-90921DiVA: diva2:507539
QC 201203052012-03-052012-03-052014-02-03Bibliographically approved