INITIATED CHEMICAL VAPOR DEPOSITION (iCVD) OF POLY(ACRYLIC ACID): A COMPARISON BETWEEN CONTINUOUS AND CLOSED-BATCH iCVD APPROACHES

Year 2024, Volume: 12 Issue: 3, 586 - 595, 01.09.2024

Kurtuluş Yılmaz , Emine Sevgili Mercan , Mehmet Gürsoy , Mustafa Karaman

https://doi.org/10.36306/konjes.1416290

Abstract

In this study, poly(acrylic acid) (PAA) thin films were deposited on silicon wafer and glass surfaces by initiated chemical vapor deposition (iCVD) method using di-tert-butyl peroxide (TBPO) as the initiator and acrylic acid (AA) as the monomer. During iCVD, two different precursor feeding approaches, namely continuous and closed-batch, were employed. The effects of substrate temperature and the precursor feeding approaches on the deposition rates and surface morphology of the films were investigated. The highest deposition rates for the continuous and closed-batch iCVD approaches were found as 26.1 nm/min and 18.6 nm/min, respectively, at a substrate temperature of 15 °C. FTIR analysis of the films deposited by both approaches indicated high structural retention of the monomer during the polymerization. AFM results indicated that, PAA thin films possessed low RMS roughness values of 2.76 nm and 1.84 nm using continuous and closed-batch iCVD, respectively. Due to the slightly higher surface roughness of the film deposited under continuous iCVD, that film exhibited a lower water contact angle of 16.1° than the film deposited in closed-batch iCVD. In terms of monomer utilization ratio, closed-batch system was found to be more effective, which may help to minimize the carbon footprint of iCVD process.

Keywords

Poly(acrylic acid), Thin film, Hydrophilic, Chemical vapor deposition, iCVD

Project Number

Konya Technical University Research Foundation (Project No: 232216033), Scientific and Technological Research Council of Turkey (TÜBİTAK, Project No: 118M041)

References

• L. Cui, R. Wang, X. Ji, M. Hu, B. Wang, and J. Liu, "Template-assisted synthesis of biodegradable and pH-responsive polymer capsules via RAFT polymerization for controlled drug release," Materials Chemistry and Physics, vol. 148, no. 1, pp. 87-95, 2014/11/14/ 2014, doi: https://doi.org/10.1016/j.matchemphys.2014.07.016.
• H. Arkaban et al., "Polyacrylic acid nanoplatforms: Antimicrobial, tissue engineering, and cancer theranostic applications," Polymers, vol. 14, no. 6, p. 1259, 2022.
• A. B. Rashid and M. E. Hoque, "Polymer nanocomposites for defense applications," in Advanced Polymer Nanocomposites: Elsevier, 2022, pp. 373-414.
• A. Kausar, "Poly (acrylic acid) nanocomposites: Design of advanced materials," Journal of Plastic Film & Sheeting, vol. 37, no. 4, pp. 409-428, 2021.
• Y. Zhao, J. Kang, and T. Tan, "Salt-, pH-and temperature-responsive semi-interpenetrating polymer network hydrogel based on poly (aspartic acid) and poly (acrylic acid)," Polymer, vol. 47, no. 22, pp. 7702-7710, 2006.
• K. Yılmaz, M. Gürsoy, and M. Karaman, "Vapor Deposition of Transparent Antifogging Polymeric Nanocoatings," Langmuir, vol. 37, no. 5, pp. 1941-1947, 2021/02/09 2021, doi: 10.1021/acs.langmuir.0c03437.
• I. Chaduc, A. Crépet, O. Boyron, B. Charleux, F. D’Agosto, and M. Lansalot, "Effect of the pH on the RAFT polymerization of acrylic acid in water. Application to the synthesis of poly (acrylic acid)-stabilized polystyrene particles by RAFT emulsion polymerization," Macromolecules, vol. 46, no. 15, pp. 6013-6023, 2013.
• A. Pal, D. Das, A. K. Sarkar, S. Ghorai, R. Das, and S. Pal, "Synthesis of glycogen and poly (acrylic acid)-based graft copolymers via ATRP and its application for selective removal of Pb2+ ions from aqueous solution," European Polymer Journal, vol. 66, pp. 33-46, 2015.
• K. Shi, Y. Lei, S. Wang, and K. K. Shiu, "Electrochemically Induced Free‐Radical Polymerization for the Fabrication of Amperometric Glucose Biosensors," Electroanalysis, vol. 22, no. 20, pp. 2366-2375, 2010.
• C. Burguière et al., "Block copolymers of poly (styrene) and poly (acrylic acid) of various molar masses, topologies, and compositions prepared via controlled/living radical polymerization. Application as stabilizers in emulsion polymerization," Macromolecules, vol. 34, no. 13, pp. 4439-4450, 2001.
• F. Zhang, W. Zhang, Y. Yu, B. Deng, J. Li, and J. Jin, "Sol–gel preparation of PAA-g-PVDF/TiO2 nanocomposite hollow fiber membranes with extremely high water flux and improved antifouling property," Journal of Membrane Science, vol. 432, pp. 25-32, 2013.
• B. Yang, Y. Zhou, W. Yu, S. Zhang, H. Chen, and J. Ye, "Photopolymerization synthesis of polyacrylic acid dispersant with methoxysilicon end groups and its application in a nano‐SiO2 aqueous system," Polymer International, vol. 68, no. 4, pp. 675-683, 2019.
• J. Xie et al., "Phosphate functionalized poly (vinyl alcohol)/poly (acrylic acid)(PVA/PAA): an electrospinning nanofiber for uranium separation," Journal of Radioanalytical and Nuclear Chemistry, vol. 326, no. 1, pp. 475-486, 2020.
• M. Gürsoy and M. Karaman, "Surface Treatments for Biological, Chemical, and Physical Applications," Wiley Online Library, 2016.
• K. K. Gleason, "CVD Polymers: Fabrication of Organic Surfaces and Devices," Wiley, p. 8, 2015.
• J. Xu and K. K. Gleason, "Conformal, amine-functionalized thin films by initiated chemical vapor deposition (iCVD) for hydrolytically stable microfluidic devices," Chemistry of Materials, vol. 22, no. 5, pp. 1732-1738, 2010.
• K. K. Gleason, "Organic surface functionalization by initiated CVD (iCVD)," Surface modification of polymers: methods and applications, pp. 107-134, 2019.
• M. Gürsoy et al., "Bioinspired fog capture and channel mechanism based on the arid climate plant Salsola crassa," Colloids and surfaces a: physicochemical and engineering aspects, vol. 529, pp. 195-202, 2017.
• K. Yılmaz, H. Şakalak, M. Gürsoy, and M. Karaman, "Vapor deposition of stable copolymer thin films in a batch iCVD reactor," Journal of Applied Polymer Science, 2020, doi: 10.1002/app.50119.
• C. D. Petruczok, N. Chen, and K. K. Gleason, "Closed batch initiated chemical vapor deposition of ultrathin, functional, and conformal polymer films," Langmuir, vol. 30, no. 16, pp. 4830-7, Apr 29 2014, doi: 10.1021/la500543d.
• M. Gürsoy and M. Karaman, "Effect of substrate temperature on initiated plasma enhanced chemical vapor deposition of PHEMA thin films," physica status solidi (c), vol. 12, no. 7, pp. 1006-1010, 2015.
• K. K. Lau and K. K. Gleason, "Initiated chemical vapor deposition (iCVD) of poly (alkyl acrylates): A kinetic model," Macromolecules, vol. 39, no. 10, pp. 3695-3703, 2006.
• M. Gürsoy, "Vapor deposition polymerization of synthetic rubber thin film in a plasma enhanced chemical vapor deposition reactor," Journal of Applied Polymer Science, vol. 138, no. 4, p. 49722, 2021.
• K. Yılmaz, H. Şakalak, M. Gürsoy, and M. Karaman, "Initiated Chemical Vapor Deposition of Poly(Ethylhexyl Acrylate) Films in a Large-Scale Batch Reactor," Industrial & Engineering Chemistry Research, vol. 58, no. 32, pp. 14795-14801, 2019/08/14 2019, doi: 10.1021/acs.iecr.9b02213.
• K. K. Lau and K. K. Gleason, "Initiated chemical vapor deposition (iCVD) of poly (alkyl acrylates): an experimental study," Macromolecules, vol. 39, no. 10, pp. 3688-3694, 2006.
• A. Khlyustova and R. Yang, "Initiated Chemical Vapor Deposition Kinetics of Poly (4-Aminostyrene)," Frontiers in Bioengineering and Biotechnology, p. 309, 2021.
• M. E. Alf et al., "Chemical vapor deposition of conformal, functional, and responsive polymer films," Advanced Materials, vol. 22, no. 18, pp. 1993-2027, 2010.
• J. Wu, Z. Feng, C. Dong, P. Zhu, J. Qiu, and L. Zhu, "Synthesis of sodium carboxymethyl cellulose/poly (acrylic acid) microgels via visible-light-triggered polymerization as a self-sedimentary cationic basic dye adsorbent," Langmuir, vol. 38, no. 12, pp. 3711-3719, 2022.
• L. M. Sanchez, D. G. Actis, J. S. Gonzalez, P. M. Zélis, and V. A. Alvarez, "Effect of PAA-coated magnetic nanoparticles on the performance of PVA-based hydrogels developed to be used as environmental remediation devices," Journal of Nanoparticle Research, vol. 21, pp. 1-16, 2019.
• T. Kavitha, I.-K. Kang, and S.-Y. Park, "Poly (acrylic acid)-grafted graphene oxide as an intracellular protein carrier," Langmuir, vol. 30, no. 1, pp. 402-409, 2014.
• V. d. A. M. Gonzaga, B. A. Chrisostomo, A. L. Poli, and C. C. Schmitt, "Preparation, characterization and photostability of nanocomposite films based on poly (acrylic acid) and montmorillonite," Materials Research, vol. 21, 2018.
• D. Lin-Vien, N. B. Colthup, W. G. Fateley, and J. G. Grasselli, The handbook of infrared and Raman characteristic frequencies of organic molecules. Elsevier, 1991.
• P. K. Kashyap, Y. S. Negi, N. K. Goel, R. K. Diwan, and S. Rattan, "Chemical initiator-free synthesis of poly (acrylic acid-co-itaconic acid) using radiation-induced polymerization for application in dental cements," Radiation Physics and Chemistry, vol. 198, p. 110243, 2022.
• J. Huang, F. Carpentier, F. Miserque, M. Ferry, and S. Esnouf, "Interaction between radio-oxidized polypropylene and gaseous HCl. Part 1. Qualitative evidence," Polymer Degradation and Stability, vol. 221, p. 110663, 2024/03/01/ 2024, doi: https://doi.org/10.1016/j.polymdegradstab.2024.110663.
• W. E. Tenhaeff and K. K. Gleason, "Initiated and oxidative chemical vapor deposition of polymeric thin films: iCVD and oCVD," Advanced Functional Materials, vol. 18, no. 7, pp. 979-992, 2008.
• M. Karaman et al., "Chemical and Physical Modification of Surfaces," in Surface Treatments for Biological, Chemical, and Physical Applications, 2017, pp. 23-66.
• K. K. Gleason, "Nanoscale control by chemically vapour-deposited polymers," Nature Reviews Physics, vol. 2, no. 7, pp. 347-364, 2020/07/01 2020, doi: 10.1038/s42254-020-0192-6.
• K. K. Gleason, "Designing organic and hybrid surfaces and devices with initiated chemical vapor deposition (iCVD)," Advanced Materials, p. 2306665, 2023.
• F. Jabeen, M. Chen, B. Rasulev, M. Ossowski, and P. Boudjouk, "Refractive indices of diverse data set of polymers: A computational QSPR based study," Computational Materials Science, vol. 137, pp. 215-224, 2017, doi: 10.1016/j.commatsci.2017.05.022.
• L.-Q. Chu, W.-J. Tan, H.-Q. Mao, and W. Knoll, "Characterization of UV-induced graft polymerization of poly (acrylic acid) using optical waveguide spectroscopy," Macromolecules, vol. 39, no. 25, pp. 8742-8746, 2006.
• B. Liu, L. Wen, and X. Zhao, "The surface change of TiO2 film induced by UV illumination and the effects on UV–vis transmission spectra," Applied Surface Science, vol. 255, no. 5, pp. 2752-2758, 2008.
• M. Eita, L. Wågberg, and M. Muhammed, "Thin films of zinc oxide nanoparticles and poly (acrylic acid) fabricated by the layer-by-layer technique: A facile platform for outstanding properties," The Journal of Physical Chemistry C, vol. 116, no. 7, pp. 4621-4627, 2012.
• S. Walheim, E. Schaffer, J. Mlynek, and U. Steiner, "Nanophase-separated polymer films as high-performance antireflection coatings," Science, vol. 283, no. 5401, pp. 520-522, 1999.
• M. Gürsoy and B. Kocadayıoğulları, "Environmentally Friendly Approach for the Plasma Surface Modification of Fabrics for Improved Fog Harvesting Performance," Fibers and Polymers, vol. 24, no. 10, pp. 3557-3567, 2023.
• S. M. Rumrill, V. Agarwal, and K. K. S. Lau, "Conformal Growth of Ultrathin Hydrophilic Coatings on Hydrophobic Surfaces Using Initiated Chemical Vapor Deposition," Langmuir, vol. 37, no. 25, pp. 7751-7759, Jun 29 2021, doi: 10.1021/acs.langmuir.1c00918.
• K.-Y. Law, "Contact Angle Hysteresis on Smooth/Flat and Rough Surfaces. Interpretation, Mechanism, and Origin," Accounts of Materials Research, vol. 3, no. 1, pp. 1-7, 2022/01/28 2022, doi: 10.1021/accountsmr.1c00051.