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Jin SA, Facchine EG, Rojas OJ, Khan SA, Spontak RJ. Cellulose nanofibers and the film-formation dilemma: Drying temperature and tunable optical, mechanical and wetting properties of nanocomposite films composed of waterborne sulfopolyesters. J Colloid Interface Sci 2021; 598:369-378. [PMID: 33910071 DOI: 10.1016/j.jcis.2021.04.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 11/24/2022]
Abstract
HYPOTHESIS Waterborne sulfopolyesters have gained considerable interest as coating materials due to their excellent film-forming and optical properties. Their commercial use has been limited, however, due to their fragile nature. Incorporating cellulose nanofiber (CNF), a sustainable biopolymer, into the polymer matrix is expected to enhance the mechanical integrity of the nanocomposite as these two components synergistically interact. EXPERIMENTS In this study, we have investigated the suspension and film characteristics of three sulfopolyesters varying in charge density, glass transition temperature and molecular weight, as well as their mixtures with CNF. We have performed steady-shear rheology on mixtures with different CNF loading levels, and resulting films have been subjected to quasistatic uniaxial tensile and water contact-angle tests to elucidate the effects of CNF on mechanical and surface properties. FINDINGS Addition of CNF to waterborne polyester promotes shear-thinning behavior that remains unaffected by the CNF content. Solid films cast from these suspensions possess enhanced mechanical properties, as well as tailorable surface hydrophilicity, depending on composition and film-drying temperature. Tensile tests reveal that films containing 10 wt% CNF display the greatest mechanical improvements, suggesting the existence of a previously unidentified Goldilocks composition window.
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Affiliation(s)
- Soo-Ah Jin
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - Emily G Facchine
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - Orlando J Rojas
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA; Department of Bioproducts and Biosystems, Aalto University, Espoo 02150, Finland; Departments of Chemical & Biological Engineering, Chemistry and Wood Science, University of British Columbia, Vancouver V6T 1Z3, Canada
| | - Saad A Khan
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA.
| | - Richard J Spontak
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA; Department of Materials Science & Engineering, North Carolina State University, Raleigh, NC 27695, USA.
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2
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Islam S, Velev OD. Mechanism and control of "coffee-ring erosion" phenomena in structurally colored ionomer films. SOFT MATTER 2020; 16:2683-2694. [PMID: 32026917 DOI: 10.1039/c9sm02457c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ionomer polyesters have polymer backbones functionalized with charged groups that make them water-dispersible. Despite the widespread use of ionomer polymers in environmentally friendly coatings without volatile organic solvents, the fundamental understanding of their film formation properties is still limited. In the study, we deposited polyester nanofilms of brilliant structural colors and correlated the macroscale optical properties to the microscale thickness of the thin films. We found that sessile water droplets deposited on these films drive the formation of a rich variety of structures by an evaporation-induced effect of "coffee-ring erosion". The ionomers spontaneously get partially re-dispersed in the form of nanoparticles in the sessile droplets and driven by convective evaporation flows, become redistributed in multiple colorful ring patterns. By using the structural colors as means to follow the polymer redistribution, we characterized further the coffee-ring patterns and found that the generated patterns are dictated by polymer composition but are mostly independent on molecular weight. As expected by colloidal theory, this phenomenon was suppressed in presence of electrolytes. Furthermore, we show that the integrity of these thin polyester films can be significantly improved by thermal densification without any further chemical curing.
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Affiliation(s)
- Sabina Islam
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA.
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Noppalit S, Simula A, Billon L, Asua JM. On the nitroxide mediated polymerization of methacrylates derived from bio-sourced terpenes in miniemulsion, a step towards sustainable products. Polym Chem 2020. [DOI: 10.1039/c9py01667h] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The typical use of toxic solvents, expensive control agents and the need of intermediate purification steps hinders the introduction of bio-sourced monomers into industrially viable block copolymers. This study aims at overcoming these limitations.
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Affiliation(s)
- Sayrung Noppalit
- POLYMAT
- University of the Basque Country UPV/EHU
- Kimika Aplikatua saila
- Kimika Zientzien Fakultatea
- Joxe Mari Korta Zentroa
| | - Alexandre Simula
- POLYMAT
- University of the Basque Country UPV/EHU
- Kimika Aplikatua saila
- Kimika Zientzien Fakultatea
- Joxe Mari Korta Zentroa
| | - Laurent Billon
- CNRS
- Université de Pau et des Pays de l'Adour E2S UPPA
- IPREM
- UMR 5254
- Hélioparc Pau-Pyrénées
| | - José M. Asua
- POLYMAT
- University of the Basque Country UPV/EHU
- Kimika Aplikatua saila
- Kimika Zientzien Fakultatea
- Joxe Mari Korta Zentroa
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4
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Mehravar E, Gross MA, Leal GP, Reck B, Leiza JR, Asua JM. Phase Separation Driven On-Demand Debondable Waterborne Pressure-Sensitive Adhesives. Polymers (Basel) 2018; 10:E975. [PMID: 30960900 PMCID: PMC6403930 DOI: 10.3390/polym10090975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 08/28/2018] [Accepted: 08/28/2018] [Indexed: 11/16/2022] Open
Abstract
A waterborne pressure-sensitive adhesive (PSA) that shows high adhesive performance and easy debondability on demand without leaving residues on the substrate (adhesive failure) has been developed. A key component of the PSA is a semicrystalline phase that is beneficial for the adhesive properties and that becomes fluid when heated above the melting temperature. Migration of this liquid-like polymer to the substrate-adhesive interface and hardening upon cooling results in a hard non-tacky interface that facilitates debonding. The effect of the particle morphology on the debonding ability is discussed.
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Affiliation(s)
- Ehsan Mehravar
- POLYMAT and Kimika Aplikatua Saila, Kimika Zientzien Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain.
| | - Michael A Gross
- BASF SE, Dispersions & Colloidal Materials GMD-B001, Carl-Bosch-Strasse 38, 67056 Ludwigshafen, Germany.
| | - Gracia Patricia Leal
- POLYMAT and Kimika Aplikatua Saila, Kimika Zientzien Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain.
| | - Bernd Reck
- BASF SE, Dispersions & Colloidal Materials GMD-B001, Carl-Bosch-Strasse 38, 67056 Ludwigshafen, Germany.
| | - Jose R Leiza
- POLYMAT and Kimika Aplikatua Saila, Kimika Zientzien Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain.
| | - José M Asua
- POLYMAT and Kimika Aplikatua Saila, Kimika Zientzien Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain.
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5
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Picchio ML, Paredes AJ, Palma SD, Passeggi MC, Gugliotta LM, Minari RJ, Igarzabal CIA. pH-responsive casein-based films and their application as functional coatings in solid dosage formulations. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.01.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Nassar M, Gromer A, Thalmann F, Hébraud P, Holl Y. Velocity of lateral drying fronts in film formation by drying of colloidal dispersions. A 2D simulation. J Colloid Interface Sci 2018; 511:424-433. [DOI: 10.1016/j.jcis.2017.10.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/02/2017] [Accepted: 10/03/2017] [Indexed: 10/18/2022]
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Zhao J, Wu L, Zhan C, Shao Q, Guo Z, Zhang L. Overview of polymer nanocomposites: Computer simulation understanding of physical properties. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.10.035] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Morphology of Composite Polymer Latexes: An Update on Synthesis and Applications, Modeling, and Characterization. ADVANCES IN POLYMER SCIENCE 2017. [DOI: 10.1007/12_2017_25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Mehravar E, Leiza JR, Asua JM. Synthesis and characterization of comb-like acrylic-based polymer latexes containing nano-sized crystallizable domains. POLYMER 2016. [DOI: 10.1016/j.polymer.2015.12.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Gromer A, Nassar M, Thalmann F, Hébraud P, Holl Y. Simulation of Latex Film Formation Using a Cell Model in Real Space: Vertical Drying. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:10983-94. [PMID: 26378376 DOI: 10.1021/acs.langmuir.5b02845] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
This paper presents a simulation tool applied to latex film formation by drying, a hybrid between a classical numerical resolution method using finite differences and cellular automata, and making use of object-oriented programming. It consists of dividing real space into cells and applying local physical laws to simulate the exchange of matter between neighboring cells. In a first step, the simulation was applied to the simple case of vertical drying of a latex containing only one population of monodisperse particles and water. Our results show how the distribution of latex particles evolves through the different drying stages due to a combination of diffusion, convection, and particle deformation. While repulsive interactions between the particles tend to favor homogeneous distributions in the first drying stage, concentration gradients that develop in opposite ways can be observed depending on the drying regime. The distributions, calculated in various cases, reproduce and extend several theoretical results and are in qualitative agreement with some experimental findings.
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Affiliation(s)
- A Gromer
- CNRS-ICS, Université de Strasbourg , 23 rue du Loess BP 84047, 67034 Strasbourg Cedex 2, France
| | - M Nassar
- CNRS-ICS, Université de Strasbourg , 23 rue du Loess BP 84047, 67034 Strasbourg Cedex 2, France
| | - F Thalmann
- CNRS-ICS, Université de Strasbourg , 23 rue du Loess BP 84047, 67034 Strasbourg Cedex 2, France
| | - P Hébraud
- IPCMS, 23 rue du Loess BP 43, 67034 Strasbourg Cedex 2, France
| | - Y Holl
- CNRS-ICS, Université de Strasbourg , 23 rue du Loess BP 84047, 67034 Strasbourg Cedex 2, France
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Picchio ML, Minari RJ, Gonzalez VDG, Barandiaran MJ, Gugliotta LM. New strategy to improve acrylic/casein compatibilization in waterborne hybrid nanoparticles. J Appl Polym Sci 2015. [DOI: 10.1002/app.42421] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Matías L. Picchio
- Polymer Reaction Engineering Group; INTEC (Universidad Nacional del Litoral-CONICET); Güemes 3450 Santa Fe 3000 Argentina
| | - Roque J. Minari
- Polymer Reaction Engineering Group; INTEC (Universidad Nacional del Litoral-CONICET); Güemes 3450 Santa Fe 3000 Argentina
| | - Veronica D. G. Gonzalez
- Polymer Reaction Engineering Group; INTEC (Universidad Nacional del Litoral-CONICET); Güemes 3450 Santa Fe 3000 Argentina
| | - María J. Barandiaran
- Institute for Polymer Materials; POLYMAT; Departamento de Química Aplicada; University of the Basque Country, Centro Joxe Mari Korta; Avenida Tolosa 72 20018 Donostia-San Sebastián Spain
| | - Luis M. Gugliotta
- Polymer Reaction Engineering Group; INTEC (Universidad Nacional del Litoral-CONICET); Güemes 3450 Santa Fe 3000 Argentina
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12
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Udagama R, de las Heras Alarcón C, Keddie JL, Tsavalas JG, Bourgeat-Lami E, McKenna TFL. Acrylic-Alkyd Hybrids: Secondary Nucleation, Particle Morphology, and Limiting Conversions. MACROMOL REACT ENG 2014. [DOI: 10.1002/mren.201400003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ravindra Udagama
- Université de Lyon, Univ. Lyon 1, CPE Lyon, CNRS UMR 5265; Laboratoire de Chimie, Catalyse, Polymères et Procédés (C2P2), LCPP group; 43 Bd du 11 Novembre 1918 F-69616 Villeurbanne France
| | | | - Joseph L. Keddie
- Department of Physics; University of Surrey; Guildford Surrey GU2 7XH UK
| | - John G. Tsavalas
- Nanostructured Polymers Research Center; University of New Hampshire; Durham NH USA
| | - Elodie Bourgeat-Lami
- Université de Lyon, Univ. Lyon 1, CPE Lyon, CNRS UMR 5265; Laboratoire de Chimie, Catalyse, Polymères et Procédés (C2P2), LCPP group; 43 Bd du 11 Novembre 1918 F-69616 Villeurbanne France
| | - Timothy F. L. McKenna
- Université de Lyon, Univ. Lyon 1, CPE Lyon, CNRS UMR 5265; Laboratoire de Chimie, Catalyse, Polymères et Procédés (C2P2), LCPP group; 43 Bd du 11 Novembre 1918 F-69616 Villeurbanne France
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Ou J, Yang Y, Gan J, Ha C, Zhang M. Preparation, properties, and applications of acrylic-polyurethane hybrid emulsions in extinction electrophoresis. J Appl Polym Sci 2014. [DOI: 10.1002/app.40078] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Juhua Ou
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Yong Yang
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Jianqun Gan
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 China
| | - Chengyong Ha
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 China
- Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 China
| | - Min Zhang
- Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou 510650 China
- Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; Guangzhou 510650 China
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Reyes Y, Peruzzo PJ, Fernández M, Paulis M, Leiza JR. Encapsulation of clay within polymer particles in a high-solids content aqueous dispersion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:9849-9856. [PMID: 23883443 DOI: 10.1021/la401301s] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
By using a two-step polymerization process, it was possible to encapsulate clay platelets within polymer particles dispersed in water. First, seed polymer particles with chemically bonded clay were obtained by batch miniemulsion polymerization. Then, the clay was buried within the particles by the addition of neat monomer in a second step. The final stable dispersions can have a solids content of up to 50 wt %. Transmission electron microscopy images clearly show the presence of clay platelets inside the polymer colloids, although they are not totally exfoliated. The obtained nanocomposites showed an increase in both the storage modulus in the rubbery state and the water resistance as the clay content increases. The approach presented here might be useful for encapsulating other high-aspect ratio nanofillers.
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Affiliation(s)
- Yuri Reyes
- POLYMAT, Kimika Aplikatua Saila, Kimika Zientzien Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastián, Spain
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