Abstract：
:Wheat arabinoxylan was treated with two α-arabinofuranosidases exhibiting different mode of action to create three different polymeric substrates. These three substrate preparations were characterized by xylopyranose backbone sugars that are (1) singly substituted by arabinose at C2 or C3, (2) doubly substituted by arabinose at C2 and C3, and (3) largely unsubstituted. All xylan preparations were grafted with glycidyl methacrylate using cerium ammonium nitrate and then evaluated in terms of graft yield and adsorption to cellulose surfaces. The highest graft yield was observed for the xylan preparation characterized by a largely unsubstituted xylopyranose backbone. Furthermore, QCM-D analyses revealed that grafted xylans exhibited a two-stage desorption pattern, which was not seen with the ungrafted xylans and was consistent with increased water sorption. Accordingly, this study demonstrates the potential of arabinofuranosidases to increase the yield and influence the viscoelastic properties of grafted xylans used as biobased cellulose coatings.
journal_name
Biomacromoleculesjournal_title
Biomacromoleculesauthors
Littunen K,Mai-Gisondi G,Seppälä J,Master ERdoi
10.1021/acs.biomac.7b00229subject
Has Abstractpub_date
2017-05-08 00:00:00pages
1634-1641issue
5eissn
1525-7797issn
1526-4602journal_volume
18pub_type
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