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Tailoring Surface Wetness of Cellulose by Surface Initiate Polymerization  

Yang, Yu-Mi (Department of Organic Materials and Fiber Engineering, Soongsil University)
Choi, Hyung-Min (Department of Organic Materials and Fiber Engineering, Soongsil University)
Kwark, Young-Je (Department of Organic Materials and Fiber Engineering, Soongsil University)
Publication Information
Textile Science and Engineering / v.45, no.5, 2008 , pp. 276-281 More about this Journal
Abstract
The hydrophilic/hydrophobic nature of the cellulose could be tuned by introducing a polymer layer onto the surface using surface initiated polymerization techniques. Initiating groups for the polymerization could be immobilized by reacting 2-bromoisobutyrylbromide with the hydroxyl groups on cellulose. Thereafter, using atom transfer radical polymerization the modified cellulose was grafted with hydrophobic poly(methyl acrylate) (PMA), or with poly(N-isopropyl acrylamide) (PNIPAAm) which have been known for having lower critical solution temperature. We characterized the modified surface of cellulose using SEM-EDS and XPS, and FT-IR. The contact angles of the polymer grafted cellulose showed that the hydrophilic nature of cellulose surface was changed to hydrophobic after being grafted with PMA and to temperature dependent hydrophilic/hydrophobic with PNIPAAm.
Keywords
ATRP; surface initiated polymerization; cellulose; N-isopropyl acrylamide; wettability;
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