TY - JOUR
T1 - Layer-by-layer assembled hydrophobic coatings for cellulose nanofibril films and textiles, made of polylysine and natural wax particles
AU - Forsman, Nina
AU - Lozhechnikova, Alina
AU - Khakalo, Alexey
AU - Johansson, Leena-Sisko
AU - Vartiainen, Jari
AU - Österberg, Monika
PY - 2017
Y1 - 2017
N2 - Herein we present a simple method to render cellulosic
materials highly hydrophobic while retaining their
breathability and moisture buffering properties, thus
allowing for their use as functional textiles. The
surfaces are coated via layer-by-layer deposition of two
natural components, cationic poly-L-lysine and anionic
carnauba wax particles. The combination of multiscale
roughness, open film structure, and low surface energy of
wax colloids, resulted in long-lasting
superhydrophobicity on cotton surface already after two
bilayers. Atomic force microscopy, interference
microscopy, scanning electron microscopy and X-ray
photoelectron spectroscopy were used to decouple
structural effects from changes in surface energy.
Furthermore, the effect of thermal annealing on the
coating was evaluated. The potential of this simple and
green approach to enhance the use of natural cellulosic
materials is discussed.
AB - Herein we present a simple method to render cellulosic
materials highly hydrophobic while retaining their
breathability and moisture buffering properties, thus
allowing for their use as functional textiles. The
surfaces are coated via layer-by-layer deposition of two
natural components, cationic poly-L-lysine and anionic
carnauba wax particles. The combination of multiscale
roughness, open film structure, and low surface energy of
wax colloids, resulted in long-lasting
superhydrophobicity on cotton surface already after two
bilayers. Atomic force microscopy, interference
microscopy, scanning electron microscopy and X-ray
photoelectron spectroscopy were used to decouple
structural effects from changes in surface energy.
Furthermore, the effect of thermal annealing on the
coating was evaluated. The potential of this simple and
green approach to enhance the use of natural cellulosic
materials is discussed.
KW - Layer-by-layer assembly
KW - poly-L-lysine
KW - carnauba wax
KW - textile
KW - cellulose nanofibril films
KW - hydrophobicity
UR - http://www.scopus.com/inward/record.url?scp=85020482996&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2017.06.007
DO - 10.1016/j.carbpol.2017.06.007
M3 - Article
VL - 173
SP - 392
EP - 402
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
SN - 0144-8617
ER -