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Hydrophobic Coating on Cellulosic Textile Material by Betulin and a Betulin Based Polymer
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.
2016 (English)Independent thesis Advanced level (degree of Master (Two Years)), 80 credits / 120 HE creditsStudent thesis
Abstract [en]

Betulin is a naturally abundant compound in the outer bark of birch and can be easily

obtained by solvent extraction. Herein, solutions of betulin were used to treat cellulosic

textile fibers and improve their water repellency. Cotton fabrics impregnated in a 7.5 g

L-1 solution of betulin in ethanol showed the highest water contact angle of about 153°

while the impregnation in a 3.75 g L-1 solution resulted in a close effect. A terephthaloyl

chloride-betulin copolymer was synthesized and dissolved in tetrahydrofuran to afford a

solution with a concentration of 3.75 g L-1. The cotton fabric impregnated in this

solution showed a water contact angle of 150°. Changes in morphology of the cellulose

fibers before and after the treatment were observed by scanning electron microscopy,

and the water repellency was measured by a standard spray test. The marketing strategy

of the potential product, which will be developed based on this technique, was discussed.

Place, publisher, year, edition, pages
2016. , 22 p.
Keyword [en]
Betulin, biorefinery, cellulose, contact angle, copolymer, hydrophobicity, marketing strategy, standard spray test, textile fibers, water repellency.
National Category
Textile, Rubber and Polymeric Materials
URN: urn:nbn:se:lnu:diva-53446OAI: diva2:936312
External cooperation
wood chemistry and pulp technology divison in KTH Royal Institute of Technology
Subject / course
Educational program
Innovation through Business, Engineering and Design - Specialisation Business, Master Programme, 120 credits
2016-06-01, N2040, Linnaeus University, Växjö, 12:20 (English)
Available from: 2016-06-14 Created: 2016-06-13 Last updated: 2016-06-14Bibliographically approved

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Huang, Tianxiao
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