Rapid hydrophilization of model polyurethane/urea (PURPEG) polymer scaffolds using oxygen plasma treatment

Rok Zaplotnik, Alenka Vesel, Gregor Primc, Xiangyu Liu, Kevin C. Chen, Chiju Wei, Kaitian Xu, Miran Mozetic

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Polyurethane/urea copolymers based on poly(ethylene glycol) (PURPEG) were exposed to weakly ionized, highly reactive low-pressure oxygen plasma to improve their sorption kinetics. The plasma was sustained with an inductively coupled radiofrequency generator operating at various power levels in either E-mode (up to the forward power of 300 W) or H-mode (above 500 W). The treatments that used H-mode caused nearly instant thermal degradation of the polymer samples. The density of the charged particles in E-mode was on the order of 1016 m-3, which prevented material destruction upon plasma treatment, but the density of neutral O-atoms in the ground state was on the order of 1021 m-3. The evolution of plasma characteristics during sample treatment in E-mode was determined by optical emission spectroscopy; surface modifications were determined by water adsorption kinetics and X-ray photoelectron spectroscopy; and etching intensity was determined by residual gas analysis. The results showed moderate surface functionalization with hydroxyl and carboxyl/ester groups, weak etching at a rate of several nm/s, rather slow activation down to a water contact angle of 30° and an ability to rapidly absorb water.

Original languageEnglish (US)
Article number144
JournalPolymers
Volume8
Issue number4
DOIs
StatePublished - Jan 1 2016

Fingerprint

Polyurethanes
Scaffolds
Urea
Polymers
Oxygen
Plasmas
Water
Etching
Optical emission spectroscopy
Kinetics
Gas fuel analysis
Charged particles
Hydroxyl Radical
Ground state
Polyethylene glycols
Contact angle
Surface treatment
Sorption
Esters
Pyrolysis

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Polymers and Plastics

Cite this

Zaplotnik, R., Vesel, A., Primc, G., Liu, X., Chen, K. C., Wei, C., ... Mozetic, M. (2016). Rapid hydrophilization of model polyurethane/urea (PURPEG) polymer scaffolds using oxygen plasma treatment. Polymers, 8(4), [144]. https://doi.org/10.3390/polym8040144
Zaplotnik, Rok ; Vesel, Alenka ; Primc, Gregor ; Liu, Xiangyu ; Chen, Kevin C. ; Wei, Chiju ; Xu, Kaitian ; Mozetic, Miran. / Rapid hydrophilization of model polyurethane/urea (PURPEG) polymer scaffolds using oxygen plasma treatment. In: Polymers. 2016 ; Vol. 8, No. 4.
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abstract = "Polyurethane/urea copolymers based on poly(ethylene glycol) (PURPEG) were exposed to weakly ionized, highly reactive low-pressure oxygen plasma to improve their sorption kinetics. The plasma was sustained with an inductively coupled radiofrequency generator operating at various power levels in either E-mode (up to the forward power of 300 W) or H-mode (above 500 W). The treatments that used H-mode caused nearly instant thermal degradation of the polymer samples. The density of the charged particles in E-mode was on the order of 1016 m-3, which prevented material destruction upon plasma treatment, but the density of neutral O-atoms in the ground state was on the order of 1021 m-3. The evolution of plasma characteristics during sample treatment in E-mode was determined by optical emission spectroscopy; surface modifications were determined by water adsorption kinetics and X-ray photoelectron spectroscopy; and etching intensity was determined by residual gas analysis. The results showed moderate surface functionalization with hydroxyl and carboxyl/ester groups, weak etching at a rate of several nm/s, rather slow activation down to a water contact angle of 30° and an ability to rapidly absorb water.",
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Zaplotnik, R, Vesel, A, Primc, G, Liu, X, Chen, KC, Wei, C, Xu, K & Mozetic, M 2016, 'Rapid hydrophilization of model polyurethane/urea (PURPEG) polymer scaffolds using oxygen plasma treatment', Polymers, vol. 8, no. 4, 144. https://doi.org/10.3390/polym8040144

Rapid hydrophilization of model polyurethane/urea (PURPEG) polymer scaffolds using oxygen plasma treatment. / Zaplotnik, Rok; Vesel, Alenka; Primc, Gregor; Liu, Xiangyu; Chen, Kevin C.; Wei, Chiju; Xu, Kaitian; Mozetic, Miran.

In: Polymers, Vol. 8, No. 4, 144, 01.01.2016.

Research output: Contribution to journalArticle

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AU - Zaplotnik, Rok

AU - Vesel, Alenka

AU - Primc, Gregor

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AU - Chen, Kevin C.

AU - Wei, Chiju

AU - Xu, Kaitian

AU - Mozetic, Miran

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N2 - Polyurethane/urea copolymers based on poly(ethylene glycol) (PURPEG) were exposed to weakly ionized, highly reactive low-pressure oxygen plasma to improve their sorption kinetics. The plasma was sustained with an inductively coupled radiofrequency generator operating at various power levels in either E-mode (up to the forward power of 300 W) or H-mode (above 500 W). The treatments that used H-mode caused nearly instant thermal degradation of the polymer samples. The density of the charged particles in E-mode was on the order of 1016 m-3, which prevented material destruction upon plasma treatment, but the density of neutral O-atoms in the ground state was on the order of 1021 m-3. The evolution of plasma characteristics during sample treatment in E-mode was determined by optical emission spectroscopy; surface modifications were determined by water adsorption kinetics and X-ray photoelectron spectroscopy; and etching intensity was determined by residual gas analysis. The results showed moderate surface functionalization with hydroxyl and carboxyl/ester groups, weak etching at a rate of several nm/s, rather slow activation down to a water contact angle of 30° and an ability to rapidly absorb water.

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