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Toward an alternative compatibilizer for PLA/cellulose composites: Grafting of xyloglucan with PLA
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center BiMaC Innovation.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.ORCID iD: 0000-0001-7132-3251
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2012 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 89, no 4, 1038-1043 p.Article in journal (Refereed) Published
Abstract [en]

Poly(L-lactic acid) (PLLA) chains were grafted on xyloglucan substrates via ring-opening polymerization of the L-Iactide monomer. Different parameters such as the nature of the substrate (native or modified xyloglucan) and the substrate/monomer ratios were varied in the synthesis to achieve different lengths of the grafted chains. A range of experimental techniques including infrared spectroscopy and nuclear magnetic resonance were used to characterize the final product. Thermal analysis showed that the glass transition temperature of xyloglucan was decreased from 252 degrees C to 216 degrees C following the grafting of PLLA. The grafting of less hydrophilic chains from xyloglucan also affected the interaction with water: the PLEA-grafted xyloglucan was insoluble in water and the moisture uptake could be decreased by about 30%. Xyloglucan adsorbs strongly to cellulose; therefore such a graft copolymer may improve the compatibility between cellulose fibers and PLLA. The PLEA-grafted xyloglucan may be useful as a novel compatibilizer in fiber-reinforced PLEA composites.

Place, publisher, year, edition, pages
2012. Vol. 89, no 4, 1038-1043 p.
Keyword [en]
Xyloglucan, Polylactic acid, Ring-opening polymerization, Polylactic acid grafting
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-99055DOI: 10.1016/j.carbpol.2012.03.051ISI: 000305593900007Scopus ID: 2-s2.0-84861643907OAI: oai:DiVA.org:kth-99055DiVA: diva2:541576
Note
QC 20120719Available from: 2012-07-19 Created: 2012-07-13 Last updated: 2017-12-07Bibliographically approved

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Fogelström, Linda

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Marais, AndrewKochumalayil, Joby J.Nilsson, CamillaFogelström, Linda
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