Abstract
A universal approach to controlled surface modification of polylactic acid (PLLA) films using diazonium chemistry was proposed. The multistep procedure includes surface activation of PLLA by argon plasma treatment and chemical activation of arenediazonium tosylates by NaBH 4 . The surface of PLLA film was grafted with different functional organic groups (OFGs), changing the PLLA surface properties (wettability, morphology, zeta potential, chemical composition, and mechanical response). Three approaches of OFG grafting were examined: (i) plasma treatment following by PLLA immersion into diazonium salt aqueous solution; (ii) grafting of PLLA surface through the reaction with chemically created aryl radicals; (iii) mutual combination of both methods The best results were achieved in the last case, where the previous plasma treatment was combined with further reaction of PLLA surface with generated aryl radicals. Using this method PLLA surface was successfully grafted with amino, carboxyl, aliphatic and fluorinated OFGs. Further investigation of surface properties from potential biological and medical points of view was performed using zeta potential, biodegradation and biofouling tests. It was shown that proposed technique allows preparation of biorepellent or bioabsorptive surfaces, tuning of PLLA biodegradation rate and nanomechanical properties, as well as the introduction of inverse properties (such as hydrophilic and hydrophobic) on both sides of PLLA films.
| Original language | English |
|---|---|
| Pages (from-to) | 226-234 |
| Number of pages | 9 |
| Journal | Applied Surface Science |
| Volume | 397 |
| DOIs | |
| Publication status | Published - 1 Mar 2017 |
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Keywords
- Diazonium salt
- Plasma
- PLLA
- Surface modification
- Surface properties
ASJC Scopus subject areas
- Surfaces, Coatings and Films
Cite this
Spatially selective modification of PLLA surface : From hydrophobic to hydrophilic or to repellent. / Bastekova, Kristina; Guselnikova, Olga; Postnikov, Pavel; Elashnikov, Roman; Kunes, Martin; Kolska, Zdenka; Švorčík, Vaclav; Lyutakov, Oleksiy.
In: Applied Surface Science, Vol. 397, 01.03.2017, p. 226-234.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Spatially selective modification of PLLA surface
T2 - From hydrophobic to hydrophilic or to repellent
AU - Bastekova, Kristina
AU - Guselnikova, Olga
AU - Postnikov, Pavel
AU - Elashnikov, Roman
AU - Kunes, Martin
AU - Kolska, Zdenka
AU - Švorčík, Vaclav
AU - Lyutakov, Oleksiy
PY - 2017/3/1
Y1 - 2017/3/1
N2 - A universal approach to controlled surface modification of polylactic acid (PLLA) films using diazonium chemistry was proposed. The multistep procedure includes surface activation of PLLA by argon plasma treatment and chemical activation of arenediazonium tosylates by NaBH 4 . The surface of PLLA film was grafted with different functional organic groups (OFGs), changing the PLLA surface properties (wettability, morphology, zeta potential, chemical composition, and mechanical response). Three approaches of OFG grafting were examined: (i) plasma treatment following by PLLA immersion into diazonium salt aqueous solution; (ii) grafting of PLLA surface through the reaction with chemically created aryl radicals; (iii) mutual combination of both methods The best results were achieved in the last case, where the previous plasma treatment was combined with further reaction of PLLA surface with generated aryl radicals. Using this method PLLA surface was successfully grafted with amino, carboxyl, aliphatic and fluorinated OFGs. Further investigation of surface properties from potential biological and medical points of view was performed using zeta potential, biodegradation and biofouling tests. It was shown that proposed technique allows preparation of biorepellent or bioabsorptive surfaces, tuning of PLLA biodegradation rate and nanomechanical properties, as well as the introduction of inverse properties (such as hydrophilic and hydrophobic) on both sides of PLLA films.
AB - A universal approach to controlled surface modification of polylactic acid (PLLA) films using diazonium chemistry was proposed. The multistep procedure includes surface activation of PLLA by argon plasma treatment and chemical activation of arenediazonium tosylates by NaBH 4 . The surface of PLLA film was grafted with different functional organic groups (OFGs), changing the PLLA surface properties (wettability, morphology, zeta potential, chemical composition, and mechanical response). Three approaches of OFG grafting were examined: (i) plasma treatment following by PLLA immersion into diazonium salt aqueous solution; (ii) grafting of PLLA surface through the reaction with chemically created aryl radicals; (iii) mutual combination of both methods The best results were achieved in the last case, where the previous plasma treatment was combined with further reaction of PLLA surface with generated aryl radicals. Using this method PLLA surface was successfully grafted with amino, carboxyl, aliphatic and fluorinated OFGs. Further investigation of surface properties from potential biological and medical points of view was performed using zeta potential, biodegradation and biofouling tests. It was shown that proposed technique allows preparation of biorepellent or bioabsorptive surfaces, tuning of PLLA biodegradation rate and nanomechanical properties, as well as the introduction of inverse properties (such as hydrophilic and hydrophobic) on both sides of PLLA films.
KW - Diazonium salt
KW - Plasma
KW - PLLA
KW - Surface modification
KW - Surface properties
UR - http://www.scopus.com/inward/record.url?scp=84998704800&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84998704800&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2016.11.062
DO - 10.1016/j.apsusc.2016.11.062
M3 - Article
VL - 397
SP - 226
EP - 234
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -