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Wang Y, Chen Z, Yu F. Preparation of epoxy-acrylic latex based on bisphenol F epoxy resin. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2017. [DOI: 10.1080/10601325.2017.1410065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Yi Wang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
| | - Zhonghua Chen
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
- Guangzhou Jointas Chemical Co., Ltd. Guangzhou, China
| | - Fei Yu
- Guangzhou Jointas Chemical Co., Ltd. Guangzhou, China
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2
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The importance of the molecular weight of ethyl cellulose on the properties of aqueous-based controlled release coatings. Int J Pharm 2017; 519:157-164. [PMID: 27979762 DOI: 10.1016/j.ijpharm.2016.12.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 12/09/2016] [Accepted: 12/10/2016] [Indexed: 01/12/2023]
Abstract
Previous investigations of aqueous based ethyl cellulose (EC) latex dispersions have mainly focused on the commercially available viscosity grade 20cps. In this study, dispersions of EC with varying viscosity grades (which correspond to molecular weights), ranging from 4 to 100 cps, were produced and characterised. The dispersions showed particle sizes around 200nm and highly negative ζ-potentials (approx. -100mV), which indicated stable dispersions as confirmed by sedimentation studies. The different latexes were used to produce free-standing film coatings. We hypothesised that the different viscosity grades of EC would result in different properties of the films. We found that an increase in viscosity grade (and higher molecular weight) resulted in lower coalescence between the particles during film formation and thus to higher water permeability than in film coatings of lower molecular weight. After exposure to water the EC 4cps and 20cps film coatings had a more porous structure in the side facing the air during production and drying after immersion in water. Molecular weight is therefore a factor that should be considered when producing pharmaceutical coatings for controlled release.
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Li X, Zhang C, Sha Y, Li L, Zhou D, Zhang Z, Xue G, Wang X. Cold flow of three-dimensional confined polymer systems. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.01.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Akhmatskaya E, Asua JM. Dynamic modeling of the morphology of latex particles with in situ formation of graft copolymer. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.25904] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Piçarra S, Afonso CAM, Kurteva VB, Fedorov A, Martinho JMG, Farinha JPS. The influence of nanoparticle architecture on latex film formation and healing properties. J Colloid Interface Sci 2011; 368:21-33. [PMID: 22153277 DOI: 10.1016/j.jcis.2011.10.077] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 10/27/2011] [Accepted: 10/30/2011] [Indexed: 10/15/2022]
Abstract
We present a study of chain interdiffusion in films formed by specially architectured PBMA nanoparticles by Förster Resonance Energy Transfer -FRET. Polymer nanoparticles contained linear chains with narrower molecular weight distributions than other previous reports, allowing a more detailed study. Apparent fractions of mixing and diffusion coefficients, determined from the quantum efficiency of energy transfer, were used to characterize the interdiffusion mechanism in the different films. The resistance of the films to dissolution by a good solvent was finally correlated with the interdiffusion results, in order to get information about film healing. We concluded that whenever interdiffusion occurs between nanoparticles containing linear chains and fully cross-linked nanoparticles, healing becomes more effective in spite of showing slower interdiffusion. We also observed that particles with longer chains are more effective for film healing. Finally, we concluded that interdiffusion occurs both ways across interfaces in blends formed by particles swollen with linear chains of different molecular weights.
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Affiliation(s)
- S Piçarra
- Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, Instituto Superior Técnico, 1049-001 Lisboa, Portugal.
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Zhang J, Yi Z, Wang Q, Liu Z, Perlich J, Gehrke R, Men Y. Effect of solvent annealing on the tensile deformation mechanism of a colloidal crystalline polymeric latex film. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:12197-12200. [PMID: 21875089 DOI: 10.1021/la2026939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The influence of solvent annealing on microscopic deformational behavior of a styrene/n-butyl acrylate copolymer latex film subjected to uniaxial tensile deformation was studied by small-angle X-ray scattering. It was demonstrated that the microscopic deformation mechanism of the latex films transformed from a nonaffine deformation behavior to an affine deformation behavior after solvent annealing. This was attributed to the interdiffusion of polymeric chains between adjacent swollen latex particles in the film. It turns out that solvent annealing is much more efficient than thermal annealing due to a much slow evaporation process after solvent annealing.
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Affiliation(s)
- Jianqi Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, 130022 Changchun, PR China
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Schroeder WF, Liu Y, Tomba JP, Soleimani M, Lau W, Winnik MA. Effect of a coalescing aid on the earliest stages of polymer diffusion in poly(butyl acrylate-co-methyl methacrylate) latex films. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.06.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Schroeder WF, Liu Y, Tomba JP, Soleimani M, Lau W, Winnik MA. Influence of Ethylene Glycol and Propylene Glycol on Polymer Diffusion in Poly(butyl acrylate-co-methyl methacrylate) Latex Films. J Phys Chem B 2010; 114:3085-94. [DOI: 10.1021/jp9118875] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Walter F. Schroeder
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada, Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto Ontario, M5S 3E5 Canada, and Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania 19477
| | - Yuanqin Liu
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada, Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto Ontario, M5S 3E5 Canada, and Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania 19477
| | - J. Pablo Tomba
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada, Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto Ontario, M5S 3E5 Canada, and Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania 19477
| | - Mohsen Soleimani
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada, Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto Ontario, M5S 3E5 Canada, and Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania 19477
| | - Willie Lau
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada, Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto Ontario, M5S 3E5 Canada, and Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania 19477
| | - Mitchell A. Winnik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada, Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto Ontario, M5S 3E5 Canada, and Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania 19477
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10
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Soleimani M, Haley JC, Lau W, Winnik MA. Effect of Hydroplasticization on Polymer Diffusion in Poly(butyl acrylate-co-methyl methacrylate) and Poly(2-ethylhexyl acrylate-co-tert-butyl methacrylate) Latex Films. Macromolecules 2009. [DOI: 10.1021/ma9020483] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mohsen Soleimani
- Department of Chemical Engineering, University of Toronto, Toronto, Ontario, Canada, M5S 3E5
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada, M5S 3H6
| | - Jeffrey C. Haley
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada, M5S 3H6
| | - Willie Lau
- Dow Advanced Materials, The Dow Chemical Company, 727 Norristown Road, Spring House, Pennsylvania 19477
| | - Mitchell A. Winnik
- Department of Chemical Engineering, University of Toronto, Toronto, Ontario, Canada, M5S 3E5
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada, M5S 3H6
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11
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Liu Y, Haley JC, Deng K, Lau W, Winnik MA. Synthesis of Branched Poly(butyl methacrylate) via Semicontinuous Emulsion Polymerization. Macromolecules 2008. [DOI: 10.1021/ma800215m] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuanqin Liu
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania 19477
| | - Jeffrey C. Haley
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania 19477
| | - Kangqing Deng
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania 19477
| | - Willie Lau
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania 19477
| | - Mitchell A. Winnik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania 19477
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12
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Zhang J, Hu S, Rieger J, Roth SV, Gehrke R, Men Y. Effect of Annealing on the Deformation Mechanism of a Styrene/n-Butyl Acrylate Copolymer Latex Film Investigated by Synchrotron Small-Angle X-ray Scattering. Macromolecules 2008. [DOI: 10.1021/ma800435f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianqi Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of Chinese Academy of Sciences, Renmin Street 5625, 130022 Changchun, P. R. China; BASF SE, Polymer Physics, 67056 Ludwigshafen, Germany; and HASYLAB am DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Shanshan Hu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of Chinese Academy of Sciences, Renmin Street 5625, 130022 Changchun, P. R. China; BASF SE, Polymer Physics, 67056 Ludwigshafen, Germany; and HASYLAB am DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Jens Rieger
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of Chinese Academy of Sciences, Renmin Street 5625, 130022 Changchun, P. R. China; BASF SE, Polymer Physics, 67056 Ludwigshafen, Germany; and HASYLAB am DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Stephan V. Roth
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of Chinese Academy of Sciences, Renmin Street 5625, 130022 Changchun, P. R. China; BASF SE, Polymer Physics, 67056 Ludwigshafen, Germany; and HASYLAB am DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Rainer Gehrke
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of Chinese Academy of Sciences, Renmin Street 5625, 130022 Changchun, P. R. China; BASF SE, Polymer Physics, 67056 Ludwigshafen, Germany; and HASYLAB am DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Yongfeng Men
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of Chinese Academy of Sciences, Renmin Street 5625, 130022 Changchun, P. R. China; BASF SE, Polymer Physics, 67056 Ludwigshafen, Germany; and HASYLAB am DESY, Notkestrasse 85, 22607 Hamburg, Germany
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Tomba JP, Ye X, Li F, Winnik MA, Lau W. Polymer blend latex films: Miscibility and polymer diffusion studied by energy transfer. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.02.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Bardajee GR, Vancaeyzeele C, Haley JC, Li AY, Winnik MA. Synthesis, characterization, and energy transfer studies of dye-labeled poly(butyl methacrylate) latex particles prepared by miniemulsion polymerization. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.07.065] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Microstructure of Triton X-100/poly (ethylene glycol) complex investigated by fluorescence resonance energy transfer. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.01.061] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Wu J, Tomba JP, Oh JK, Winnik MA, Farwaha R, Rademacher J. Synthesis of dye-labeled poly(vinyl acetate-co-ethylene) (EVA) latex and polymer diffusion in their latex films. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/pola.21029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Oh JK, Yang J, Rademacher J, Farwaha R, Winnik MA. Phase Separation and Polymer Diffusion in Poly(vinyl acetate−butyl acrylate) Latex Films Prepared by Batch Miniemulsion Polymerization. Macromolecules 2004. [DOI: 10.1021/ma049449t] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jung Kwon Oh
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada M5S 3H6; ICI Paints, Research Center, 16651 Sprague Rd., Strongsville, Ohio 44136; and National Starch and Chemicals, 10 Finderne Av., Bridgewater, New Jersey 08807
| | - Jian Yang
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada M5S 3H6; ICI Paints, Research Center, 16651 Sprague Rd., Strongsville, Ohio 44136; and National Starch and Chemicals, 10 Finderne Av., Bridgewater, New Jersey 08807
| | - Jude Rademacher
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada M5S 3H6; ICI Paints, Research Center, 16651 Sprague Rd., Strongsville, Ohio 44136; and National Starch and Chemicals, 10 Finderne Av., Bridgewater, New Jersey 08807
| | - Rajeev Farwaha
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada M5S 3H6; ICI Paints, Research Center, 16651 Sprague Rd., Strongsville, Ohio 44136; and National Starch and Chemicals, 10 Finderne Av., Bridgewater, New Jersey 08807
| | - Mitchell A. Winnik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada M5S 3H6; ICI Paints, Research Center, 16651 Sprague Rd., Strongsville, Ohio 44136; and National Starch and Chemicals, 10 Finderne Av., Bridgewater, New Jersey 08807
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18
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Wu J, Tomba JP, Winnik MA, Farwaha R, Rademacher J. Temperature Dependence of Polymer Diffusion in Poly(vinyl acetate-co-dibutyl maleate) Latex Films. Macromolecules 2004. [DOI: 10.1021/ma030569v] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Wu
- Department of Chemistry, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada; Vinamul Polymers, 10 Finderne Avenue, Bridgewater, New Jersey 08807; and ICI Paints, Research Center, 16651 Sprague Road, Strongsville, Ohio 44136
| | - J. Pablo Tomba
- Department of Chemistry, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada; Vinamul Polymers, 10 Finderne Avenue, Bridgewater, New Jersey 08807; and ICI Paints, Research Center, 16651 Sprague Road, Strongsville, Ohio 44136
| | - Mitchell A. Winnik
- Department of Chemistry, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada; Vinamul Polymers, 10 Finderne Avenue, Bridgewater, New Jersey 08807; and ICI Paints, Research Center, 16651 Sprague Road, Strongsville, Ohio 44136
| | - Rajeev Farwaha
- Department of Chemistry, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada; Vinamul Polymers, 10 Finderne Avenue, Bridgewater, New Jersey 08807; and ICI Paints, Research Center, 16651 Sprague Road, Strongsville, Ohio 44136
| | - Jude Rademacher
- Department of Chemistry, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada; Vinamul Polymers, 10 Finderne Avenue, Bridgewater, New Jersey 08807; and ICI Paints, Research Center, 16651 Sprague Road, Strongsville, Ohio 44136
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