Water Repellency of Non-fluorinated Acrylate Copolymers Containing a Stearyl Groups
Vol. 56, No. 3, pp. 143-148,
Jun. 2019
10.12772/TSE.2019.56.143
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Abstract
Non-fluorinated acrylic polymers composed of a hydrophobic monomer with a
stearyl group, polar monomer with a hydroxyl group, and curable monomer with an epoxy
group were synthesized. The hydrophobicity of the synthesized polymers was confirmed
by measuring the water contact angle of the polymer films spin coated on a silicon wafer.
The contact angle of water was in the range 99−111 °, which indicates a high level of
hydrophobicity of the polymer. The poly(ethylene terephthalate) (PET) and cotton fabrics
were coated with non-fluorinated acrylic polymer using a simple immersion method. The
coated fabric showed a high contact angle of ≥123 °. The water repellency of the fabric
treated with the polymer was maintained after washing, with the contact angle greater
than 117 °. The maintenance of water repellency after washing was higher in cotton than
in PET, as the hydroxyl groups of cotton cross-linked with the non-fluorinated acrylate polymers
to improve its durability.
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