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Perez A, Kynaston E, Lindsay C, Ballard N. Semi‐crystalline/amorphous latex blends for coatings with improved mechanical performance. J Appl Polym Sci 2022. [DOI: 10.1002/app.53517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Adrián Perez
- POLYMAT and Departamento de Química Aplicada, Facultad de Ciencias Químicas University of the Basque Country UPV/EHU Donostia‐San Sebastián Spain
| | - Emily Kynaston
- Syngenta, Jealott's Hill International Research Centre Bracknell UK
| | | | - Nicholas Ballard
- POLYMAT and Departamento de Química Aplicada, Facultad de Ciencias Químicas University of the Basque Country UPV/EHU Donostia‐San Sebastián Spain
- IKERBASQUE Basque Foundation for Science Bilbao Spain
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A New Approach Utilizing Aza-Michael Addition for Hydrolysis-Resistance Non-Ionic Waterborne Polyester. Polymers (Basel) 2022; 14:polym14132655. [PMID: 35808699 PMCID: PMC9269099 DOI: 10.3390/polym14132655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/23/2022] [Accepted: 06/26/2022] [Indexed: 02/01/2023] Open
Abstract
This work first synthesized a series of linear polyesters by step-growth polycondensation, then an amino-terminated hydrophilic polyether was grafted to the polyester as side-chains through aza-Michael addition to prepare a self-dispersible, non-ionic waterborne comb-like polyester (NWCPE). In contrast to traditional functionalization methods that usually require harsh reaction conditions and complex catalysts, the aza-Michael addition proceeds efficiently at room temperature without a catalyst. In this facile and mild way, the NWCPE samples with number-average molecular weight (Mn) of about 8000 g mol−1 were obtained. All dispersions showed excellent storage stability, reflected by no delamination observed after 6 months of storage. The NWCPE dispersion displayed better hydrolysis resistance than an ionic waterborne polyester, as was indicated by a more slight change in pH value and Mn after a period of storage. In addition, the film obtained after the NWCPE dispersion was cross-linked with the curing agent, it exhibited good water resistance, adhesion, and mechanical properties.
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3
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Fu H, Gong S. Self‐dispersible waterborne comb‐like polyester with alkali resistance and pigment‐dispersion capability. J Appl Polym Sci 2022. [DOI: 10.1002/app.52747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hao Fu
- College of Chemistry and Molecular Sciences Wuhan University Wuhan Hubei China
| | - Shu‐ling Gong
- College of Chemistry and Molecular Sciences Wuhan University Wuhan Hubei China
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Taking Advantage of Phosphate Functionalized Waterborne Acrylic Binders to Get Rid of Inhibitors in Direct-to-Metal Paints. Polymers (Basel) 2022; 14:polym14020316. [PMID: 35054719 PMCID: PMC8778291 DOI: 10.3390/polym14020316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/23/2021] [Accepted: 01/07/2022] [Indexed: 02/01/2023] Open
Abstract
In this paper, two phosphate functionalized acrylic binders are formulated to yield direct-to-metal paints without using corrosion inhibitors. The difference between both binders is the addition of polystearylacrylate crystalline nanodomains in one of them, and an amorphous methyl methacylate-co-butyl acrylate copolymer in the other. The water sensitivity, mechanical stability, adhesion, and the performance of the paints against corrosion (high humidity resistance, accelerated weathering, and salt-spray tests) are assessed and compared with a DTM paint formulated from a commercial binder. The performance of both phosphate functionalized paints formulated without corrosion inhibitors in high humidity and weathering tests is superior to the commercial DTM paint formulated without corrosion inhibitors and similar to the DTM paint formulated with them. Furthermore, the paint based on the amorphous copolymer binder provides significantly good performance in the salt spray test (even superior to that of the DTM paint formulated with corrosion inhibitors).
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Perez A, Kynaston E, Lindsay C, Ballard N. Designed incorporation of semi-crystalline domains into structured latex particles via solvent-aided emulsion polymerization. Polym Chem 2022. [DOI: 10.1039/d2py00926a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe an emulsion polymerization route towards the design of structured latex particles containing semi-crystalline domains with improved mechanical properties.
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Affiliation(s)
- Adrián Perez
- POLYMAT, University of the Basque Country UPV/EHU, Kimika Aplikatua saila, Kimika Zientzien Fakultatea, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastián, Spain
| | - Emily Kynaston
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Christopher Lindsay
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Nicholas Ballard
- POLYMAT, University of the Basque Country UPV/EHU, Kimika Aplikatua saila, Kimika Zientzien Fakultatea, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
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Kong P, Deng J, Du Z, Zou W, Zhang C. Construction of lamellar morphology by side‐chain crystalline comb‐like polymers for gas barrier. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Peng Kong
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology, Ministry of Education Beijing China
- College of Materials Science and Engineering Beijing University of Chemical Technology Beijing China
| | - Jingqian Deng
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology, Ministry of Education Beijing China
- College of Materials Science and Engineering Beijing University of Chemical Technology Beijing China
| | - Zhongjie Du
- Changzhou Advanced Materials Research Institute Beijing University of Chemical Technology Jiangsu China
- Scientific Development and Innovation Strategy Department Sinochem Petrochemical Distribution Co., Ltd Shanghai China
| | - Wei Zou
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology, Ministry of Education Beijing China
- College of Materials Science and Engineering Beijing University of Chemical Technology Beijing China
- Changzhou Advanced Materials Research Institute Beijing University of Chemical Technology Jiangsu China
| | - Chen Zhang
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology, Ministry of Education Beijing China
- College of Materials Science and Engineering Beijing University of Chemical Technology Beijing China
- Changzhou Advanced Materials Research Institute Beijing University of Chemical Technology Jiangsu China
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Xiang MY, Lyu D, Liu LZ, Men YF. Limited Fraction of Crystallized Side Chains in Bottlebrush Poly(n-alkyl methacrylate)s. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2579-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Xiang M, Lyu D, Qin Y, Chen R, Liu L, Men Y. Microstructure of bottlebrush poly(n-alkyl methacrylate)s beyond side chain packing. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Siljanovska Petreska G, van Sluijs C, Auschra C, Paulis M. Design of Waterborne Asymmetric Block Copolymers as Thermoresponsive Materials. Polymers (Basel) 2020; 12:polym12061253. [PMID: 32486153 PMCID: PMC7361867 DOI: 10.3390/polym12061253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/25/2020] [Accepted: 05/28/2020] [Indexed: 11/16/2022] Open
Abstract
AB diblock waterborne copolymers made of styrene (St) and 2-ethylhexyl acrylate (2EHA) were synthesized by means of two-step reversible addition fragmentation chain transfer (RAFT) (mini)emulsion polymerization. Monofunctional asymmetric RAFT agent was used to initiate the polymerization. The hard polystyrene “A” block was synthesized via miniemulsion polymerization followed by 2EHA pre-emulsion feeding to form the soft “B” block. Polymerization kinetics and the evolution of the molecular weight distribution were followed during synthesis of both initial and final block copolymers. DSC measurements of the block copolymers revealed the existence of two glass transition temperatures (Tgs) and thus the occurrence of two-phase systems. Microscopic techniques (atomic force microscopy (AFM) and transmission electron microscopy (TEM)) were used to study the phase separation within the particles in the latex form, after film formation at room temperature cast directly from the latex and after different post-treatments well above the Tg of the hard-polystyrene domains, when complete particle coalescence had occurred. The morphological differences observed after different annealing temperatures were correlated with the mechanical properties analyzed by DMTA measurements. Finally, the differences found in the mechanical properties of the block copolymers annealed at different temperatures were correlated to their heat seal application results.
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Affiliation(s)
- Gordana Siljanovska Petreska
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa 72, 20018 Donostia-San Sebastián, Spain;
- BASF SE, 67056 Ludwigshafen, Germany;
| | | | | | - Maria Paulis
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa 72, 20018 Donostia-San Sebastián, Spain;
- Correspondence:
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Chimenti S, Vega JM, Lecina EG, Grande HJ, Paulis M, Leiza JR. Combined Effect of Crystalline Nanodomains and in Situ Phosphatization on the Anticorrosion Properties of Waterborne Composite Latex Films. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02233] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stefano Chimenti
- POLYMAT, Kimika Aplikatua saila, Kimika Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastián, Spain
| | - Jesus Manuel Vega
- CIDETEC, Parque Científico y Tecnológico de Gipuzkoa, Paseo. Miramón 196, 20014 Donostia-San Sebastián, Spain
| | - Eva Garcia Lecina
- CIDETEC, Parque Científico y Tecnológico de Gipuzkoa, Paseo. Miramón 196, 20014 Donostia-San Sebastián, Spain
| | - Hans-Jürgen Grande
- CIDETEC, Parque Científico y Tecnológico de Gipuzkoa, Paseo. Miramón 196, 20014 Donostia-San Sebastián, Spain
- POLYMAT, Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country (UPV/EHU), 20018 Donostia-San Sebastián, Spain
| | - Maria Paulis
- POLYMAT, Kimika Aplikatua saila, Kimika Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastián, Spain
| | - Jose Ramon Leiza
- POLYMAT, Kimika Aplikatua saila, Kimika Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastián, Spain
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Mechanical and Morphological Properties of Waterborne ABA Hard-Soft-Hard Block Copolymers Synthesized by Means of RAFT Miniemulsion Polymerization. Polymers (Basel) 2019; 11:polym11081259. [PMID: 31366030 PMCID: PMC6722633 DOI: 10.3390/polym11081259] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 07/26/2019] [Indexed: 11/17/2022] Open
Abstract
High molecular weight waterborne ABA block copolymers of styrene (St) and 2-ethylhexyl acrylate (2EHA) containing hard and soft domains were synthesized by means of RAFT (mini)emulsion polymerization using a bifunctional symmetric S,S-dibenzyl trithiocarbonate (DBTTC) RAFT agent. Miniemulsion polymerization was initially used for the synthesis of the A-block, which forms hard domains, followed by 2EHA pre-emulsion feeding to build the B-block soft domains. Polymerization kinetics and the evolution of the Molecular Weight Distribution (MWD) were followed during the synthesis of different ABA block copolymers. The thermal properties of the final symmetric block copolymers were studied on dried films by means of DSC. It was found that the block copolymers have two glass transitions, which indicates the presence of a two-phase system. Phase separation was investigated by means of microscopic techniques (AFM and TEM) and SAXS, both of the particles in the latex form, as well as after film formation at room temperature and after different post-treatments. Films were annealed at temperatures well above the glass transition temperature (Tg) of the hard phase to study the bulk morphology of the films after complete particle coalescence. Moreover, for comparison purposes, the films were re-dissolved in THF, and films were again cast directly from the homogeneous THF solutions. As THF is a good solvent for both blocks, such films serve as a reference for the equilibrium morphology. Finally, DMTA studies of the films annealed at different temperatures were performed to correlate the morphology changes with the mechanical properties of the block copolymers.
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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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Mehravar E, Gross MA, Agirre A, Reck B, Leiza JR, Asua JM. Importance of film morphology on the performance of thermo-responsive waterborne pressure sensitive adhesives. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.11.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Mehravar E, Iturrospe A, Arbe A, Leiza JR, Asua JM. Acrylic-based composite latexes containing nano-sized liquid crystalline domains. POLYMER 2017. [DOI: 10.1016/j.polymer.2016.11.066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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