Bicomponent fibre mats with adhesive ultra-hydrophobicity tailored with cellulose derivatives
نویسندگان
چکیده
Morphologies featured in bicomponent 2D ultrathin films were reproduced on 3D non-woven microfibre structures. Fibre networks were constructed by electrospinning hydrophobised cellulose derivatives, trimethylsilyl cellulose (TMSC) and cellulose triacetate (CTA), dissolved in a common solvent. Diverse morphologies were obtained depending on the polymer blend ratio: electrospinning of TMSC produced non-continuous micron fibres with shallow dints, TMSC/CTA 5 : 1 flat micron fibres with regular pore arrays, TMSC/CTA 1 : 1 wrinkled micron fibres decorated with shallow dints and occasional larger pores, TMSC/CTA 1 : 5 flat micron fibres with ellipsoidal porous structures and finally, CTA that led to smooth micron and submicron fibres. The fibre mats were ultra-hydrophobic with characteristic water contact angles of ca. 150 degrees. In addition, they were characterised by high contact angle hysteresis, and water droplets adhered to the substrate even after tilting the system upside down. Through conversion of the respective components to cellulose, chemical and adsorption properties of the fibre networks could be tuned without significantly altering the large-scale network morphology.
منابع مشابه
Supported ultrathin films and non- woven fibre mats from polysaccharide containing bicomponent polymer blends
Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Laura Taajamaa Name of the doctoral dissertation Supported ultrathin films and non-woven fibre mats from polysaccharide containing bicomponent polymer blends Publisher School of Chemical Technology Unit Department of Forest Products Technology Series Aalto University publication series DOCTORAL DISSERTATIONS 87/2014 Field of r...
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