Single-walled carbon nanotubes and multiwalled carbon nanotubes functionalized with poly(L-lactic acid): A comparative study

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dc.contributor.authorOlalde, Beatriz
dc.contributor.authorAizpurua, Jesús M.
dc.contributor.authorGarcía, Ainara
dc.contributor.authorBustero, Izaskun
dc.contributor.authorObieta, Isabel
dc.contributor.authorJurado, María J.
dc.contributor.institutionBiomateriales
dc.contributor.institutionPRINTEX
dc.contributor.institutionTecnalia Research & Innovation
dc.date.accessioned2024-07-24T12:09:14Z
dc.date.available2024-07-24T12:09:14Z
dc.date.issued2008-07-24
dc.description.abstractSpectroscopic (Raman) and gravimetric (acid titration, TGA) techniques were compared to determine the functionalization degree of multiwalled carbon nanotubes (MWNTs) and single-walled carbon nanotubes (SWNTs) with poly(L-lactic acid) (PLLA), following a two-step oxidation/esterification process. After oxidation with HNO3, carbon nanotubes (CNTs) were activated with thionyl chloride to the corresponding acid chlorides and then grafted with PLLA. FTIR spectroscopy confirmed the formation of very similarly grafted CNT-PLLA materials for both SWNT and MWNT. But, according to chemical titration and TGA results, oxidized and esterified SWNT showed a significantly higher degree of functionalization than their MWNT counterparts. Contrary to these observations, the increase of the Raman ID/IG ratio was higher for MWNT-derived materials than for the SWNT counterparts. Therefore, it was concluded that this spectroscopic technique is unsuitable for the quantitative determination of the degree of functionalization when MWNT and SWNT are compared.en
dc.description.statusPeer reviewed
dc.format.extent5
dc.identifier.citationOlalde , B , Aizpurua , J M , García , A , Bustero , I , Obieta , I & Jurado , M J 2008 , ' Single-walled carbon nanotubes and multiwalled carbon nanotubes functionalized with poly(L-lactic acid) : A comparative study ' , Journal of Physical Chemistry C , vol. 112 , no. 29 , pp. 10663-10667 . https://doi.org/10.1021/jp800266j
dc.identifier.doi10.1021/jp800266j
dc.identifier.issn1932-7447
dc.identifier.urihttps://hdl.handle.net/11556/3954
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=49149106928&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofJournal of Physical Chemistry C
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsElectronic, Optical and Magnetic Materials
dc.subject.keywordsGeneral Energy
dc.subject.keywordsPhysical and Theoretical Chemistry
dc.subject.keywordsSurfaces, Coatings and Films
dc.titleSingle-walled carbon nanotubes and multiwalled carbon nanotubes functionalized with poly(L-lactic acid): A comparative studyen
dc.typejournal article
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