Discharge Plasma Treatment as an Efficient Tool for Improved Poly(lactide) Adhesive–Wood Interactions
Abstract
:1. Introduction
2. Materials and Methods
2.1. PLA Film Preparation
2.2. Barrier Discharge Plasma Wood Treatment
2.3. Fourier-Transform Infrared Spectroscopy (FTIR)
2.4. X-Ray Photoelectron Spectroscopy (XPS)
2.5. Oak Wood Bonding and Shear Strength Testing
2.6. Pull-Off Testing
2.7. Contact Angle Measurements and Surface Free Energy (SFE) Calculations
2.8. SEM Analysis
3. Results and Discussion
3.1. Chemical and Physical Changes in PLA Surface
3.1.1. X-ray Photoelectron Spectroscopy
3.1.2. SEM Analysis
3.1.3. Fourier-Transform Infrared Spectroscopy
3.2. Contact Angle and Surface Free Energy (SFE)
3.3. Effect of Plasma Treatment on the Performance of Adhesive Joints
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Sample | Surface Chemical Composition (Atomic %) | ||
C1s C-C/C-O/C = O/OC = O | O1s | Si2p/P2p/S2p/N1s/F1s/Na1s/Cl2p | |
Untreated PLA-T | 79.4 30.4/29.2/11.7/8.0 | 18.3 | 0.8/0.3/0.2/0.7/-/0.3 |
Treated PLA-T | 53.5 14.4/6.2/14.6/18.4 | 35.2 | 0.2/0.3/0.2/10.1/-/0.2/0.3 |
Untreated PLA-MC | 67.0 48.0/5.1/6.5/7.4 | 23.3 | 9.0/0.4/-/-/0.3/-/- |
Treated PLA-MC | 43.8 14.1/7.3/10.2/12.2 | 40.3 | 9.0/0.5/0.1/5.4/0.9/-/- |
Series | Contact Angle (°) | SFE (mJ/m2) | Rt (MPa) | |
---|---|---|---|---|
Water | Diiodomethane | |||
PLA-T untreated | 66.3 ± 1.4 | 42.6 ± 0.7 | 47.9 | 3.4 ± 0.4 |
PLA-T treated | 49.7 ± 2.3 | 27.9 ± 1.5 | 61.0 | 8.2 ± 0.7 |
PLA-MC untreated | 61.4 ± 1.5 | 66.5 ± 1.7 | 45.8 | 4.8 ± 0.5 |
PLA-MC treated | 57.4 ± 0.8 | 35.8 ± 0.7 | 61.2 | 7.7 ± 0.6 |
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Mamiński, M.Ł.; Novák, I.; Mičušík, M.; Małolepszy, A.; Toczyłowska-Mamińska, R. Discharge Plasma Treatment as an Efficient Tool for Improved Poly(lactide) Adhesive–Wood Interactions. Materials 2021, 14, 3672. https://doi.org/10.3390/ma14133672
Mamiński MŁ, Novák I, Mičušík M, Małolepszy A, Toczyłowska-Mamińska R. Discharge Plasma Treatment as an Efficient Tool for Improved Poly(lactide) Adhesive–Wood Interactions. Materials. 2021; 14(13):3672. https://doi.org/10.3390/ma14133672
Chicago/Turabian StyleMamiński, Mariusz Ł., Igor Novák, Matej Mičušík, Artur Małolepszy, and Renata Toczyłowska-Mamińska. 2021. "Discharge Plasma Treatment as an Efficient Tool for Improved Poly(lactide) Adhesive–Wood Interactions" Materials 14, no. 13: 3672. https://doi.org/10.3390/ma14133672