Superhydrophobic PLA fabrics prepared by UV photo-grafting of hydrophobic silica particles possessing vinyl groups.
Superhydrophobic poly(lactic acid) (PLA) fabrics are prepared by UV photo-grafting of hydrophobic silica particles possessing vinyl functional groups on the surfaces, which is a novel one-step process to provide surface with roughness as well as hydrophobicity simultaneously. For this purpose, hydrophobic silica particles with vinyl groups and average diameter of 1.51+/-0.05 microm are synthesized via a sol-gel process. The silica particles possessing vinyl groups are found to be effectively immobilized on PLA fabrics via UV photo-grafting reaction. The water contact angle of the treated PLA fabric is measured to be approximately 150 degrees, which is high enough to exhibit the Lotus effect as a result of the superhydrophobicity.
School of Advanced Materials and System Engineering, Kumoh National Institute of Technology, Gumi 730-701, Republic of Korea.
Geun Yeol
GY
Bae
Jinho
J
Jang
Young Gyu
YG
Jeong
Won Seok
WS
Lyoo
Byung Gil
BG
Min
D057927:Hydrophobic and Hydrophilic Interactions; D019344:Lactic Acid / Q000138:chemical synthesis* / Q000737:chemistry; D010316:Particle Size; D011091:Polyesters; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D012821:Silanes / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature; D014466:Ultraviolet Rays
D011091:Polyesters; D011108:Polymers; D012821:Silanes; D019344:Lactic Acid; C033616:poly(lactide); D012822:Silicon Dioxide; C052671:vinyltriethoxysilane