1
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Herrera-Ordonez J. Controversies on the mechanism and kinetics of emulsion polymerization: An updated critical review. Adv Colloid Interface Sci 2023; 320:103005. [PMID: 37776737 DOI: 10.1016/j.cis.2023.103005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 10/02/2023]
Abstract
Conventional emulsion polymerization (EP) is a process via free radicals whose driving force for its development has been its versatility to generate polymer colloids with ad hoc characteristics for a wide variety of applications, as well as its friendly character to the environment since the continuous medium is water. Although through decades of research, considerable progress has been made in understanding its mechanism and kinetics, some aspects are still not entirely clear. Furthermore, new ideas and experimental results have appeared in the literature that challenge the accepted knowledge about some aspects of EP. This work is a personal vision and an updated critical review on those controversial aspects whose precedent is the review with the same approach published by the author and collaborators almost 20 years ago (J. Macromol. Sci. Part C Polym. Rev., 2004;44:207-229). This review covers advances, aspects that are open to discussion or need improvement regarding what happens in the aqueous phase and in the interface (initiator decomposition, entry and exit of radicals, monomer transport) as well as in the polymer particles (free-radical propagation and termination, swelling, average number of radicals per particle). Special attention is paid to particle formation (nucleation) and its interrelation with colloidal stability and the evolution of the particle size distribution (PSD), which is one of the most fundamental and controversial issues of EP. The Smoluchowski collision rate coefficient to describe diffusion-controlled processes has practically become a paradigm despite the fact that there is evidence that questions its applicability. For this reason, this review also emphasizes this point and the alternatives that have been proposed to mathematically describe the diffusive stages of particle coagulation, the entry of radicals, and the termination reaction. Challenges in improving our understanding of the mechanism and kinetics of emulsion polymerization are pointed out.
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Affiliation(s)
- Jorge Herrera-Ordonez
- Centro de Física Aplicada y Tecnología Avanzada (CFATA), Universidad Nacional Autónoma de México (UNAM), Campus Juriquilla, Blvd. Juriquilla 3001, Juriquilla, Querétaro, Qro., CP 76230, Mexico.
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2
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Karishma S, Rajvanshi K, Kumar H, Basavaraj MG, Mani E. Oil-in-Water Emulsions Stabilized by Hydrophilic Homopolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:13430-13440. [PMID: 37699434 DOI: 10.1021/acs.langmuir.3c00798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Most of the polymeric emulsifiers have diblock and triblock copolymer architecture containing hydrophilic and hydrophobic domains. In this work, we show that hydrophilic homopolymers can be effective stabilizers of oil-in-water emulsions. Using polyethelyne oxide and poly(vinylpyrrolidone) as model hydrophilic homopolymers and n-decane and n-hexane as model nonpolar phases, we show that high-molecular weight polymers can stabilize emulsions over 24 h beyond a threshold concentration. We highlight the role of the molecular weight and concentration of the polymer in the stability of emulsions through kinetic measurements of emulsion volume, microscopic analysis, interfacial tension, and dilational rheology. We explain the mechanism of stabilization to stem from buoyancy-driven creaming of emulsion drops and film drainage and dilational elasticity of the interface in relation to the molecular weights and concentrations of polymers. This study demonstrates that water-soluble homopolymers can stabilize oil-in-water emulsions and open avenues for the use of eco-friendly biopolymers, which are inherently hydrophilic, as an alternative to synthetic emulsifiers.
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Affiliation(s)
- S Karishma
- Polymer Engineering and Colloid Science Lab, Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Kirti Rajvanshi
- Polymer Engineering and Colloid Science Lab, Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Hemant Kumar
- Polymer Engineering and Colloid Science Lab, Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Madivala G Basavaraj
- Polymer Engineering and Colloid Science Lab, Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
- Center for Soft and Biological Matter, Indian Institute of Technology Madras, Chennai 600036, India
| | - Ethayaraja Mani
- Polymer Engineering and Colloid Science Lab, Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
- Center for Soft and Biological Matter, Indian Institute of Technology Madras, Chennai 600036, India
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3
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In situ encapsulation of biologically active ingredients into polymer particles by polymerization in dispersed media. Prog Polym Sci 2023. [DOI: 10.1016/j.progpolymsci.2022.101637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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4
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Synthesis and Characterization of Innovative Microgels Based on Polyacrylic Acid and Microalgae Cell Wall and Their Potential as Antigen Delivery Vehicles. Pharmaceutics 2022; 15:pharmaceutics15010133. [PMID: 36678762 PMCID: PMC9863243 DOI: 10.3390/pharmaceutics15010133] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/11/2022] [Accepted: 12/14/2022] [Indexed: 01/04/2023] Open
Abstract
In this study, hybrid polyacrylic acid and Schizochytrium sp. microalgae (PAA/Schizo) microgels were synthesized by inverse emulsion assisted by ultrasound using the cell wall fraction as crosslinker. Physicochemical characterization of PAA/Schizo microgels revealed polymeric spherical particles (288 ± 39 nm) and were deemed stable and negatively charged. The produced microgels are not inherently toxic as cell viability was sustained above 80% when mice splenocytes were exposed to concentrations ranging 10-900 µg/mL. PAA/Schizo microgels were evaluated as antigen delivery nanovehicle by adsorbing bovine serum albumin (BSA); with a loading efficiency of 72% and loading capacity of 362 µg/mg. Overall, intranasally-immunized BALB/c mice showed null IgG or IgA responses against PAA/Schizo microgel-BSA, whereas soluble BSA induced significant humoral responses in systemic and mucosal compartments. Splenocytes proliferation assay upon BSA stimulus revealed positive CD4+ T cells-proliferation response in PAA/Schizo microgels-BSA group. Thus, PAA/Schizo microgels constitute functional antigen delivery vehicles of simple and ecofriendly synthesis. Moreover, the use of cell wall fraction as cross-linker agent provides an alternative use for the generation of high-value products using residual algae biomass from the oil industry. Our data suggests that the PAA/Schizo microgels are potential antigen delivery vehicles for immunotherapy development.
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5
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Bharatiya D, Parhi B, Swain SK. Morphology biased pharmacological and mechanical properties of nanosized block copolymers of
PNIPAM
with polyethylene oxide and polyaminoacids in presence of polycaprolactone. J Appl Polym Sci 2022. [DOI: 10.1002/app.53389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Debasrita Bharatiya
- Department of Chemistry Veer Surendra Sai University of Technology Sambalpur India
| | - Biswajit Parhi
- Department of Chemistry Veer Surendra Sai University of Technology Sambalpur India
| | - Sarat K. Swain
- Department of Chemistry Veer Surendra Sai University of Technology Sambalpur India
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6
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Öztürk T, Türkoğlu H. Synthesis and characterization of the graft copolymer including polyβ-butyrolactone and polyvinyl chloride by ring-opening polymerization and “click” chemistry. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2022. [DOI: 10.1080/10601325.2022.2143375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Temel Öztürk
- Faculty of Arts and Sciences, Department of Chemistry, Giresun University, Giresun, Turkey
| | - Hasret Türkoğlu
- Faculty of Arts and Sciences, Department of Chemistry, Giresun University, Giresun, Turkey
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7
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A Novel Strategy for Poly(β-alanine-b-lactone)s: Sequentially HTP and AROP. Macromol Res 2022. [DOI: 10.1007/s13233-022-0034-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Mittal A, Singh A, Hong H, Benjakul S. Chitooligosaccharides from shrimp shell chitosan prepared using H
2
O
2
or ascorbic acid/H
2
O
2
redox pair hydrolysis: characteristics, antioxidant and antimicrobial activities. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15696] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ajay Mittal
- International Center of Excellence in Seafood Science and Innovation Faculty of Agro‐Industry Prince of Songkla University Hat Yai Songkhla 90110 Thailand
| | - Avtar Singh
- International Center of Excellence in Seafood Science and Innovation Faculty of Agro‐Industry Prince of Songkla University Hat Yai Songkhla 90110 Thailand
| | - Hui Hong
- Beijing Laboratory for Food Quality and Safety College of Food Science and Nutritional Engineering China Agricultural University Beijing 100083 China
| | - Soottawat Benjakul
- International Center of Excellence in Seafood Science and Innovation Faculty of Agro‐Industry Prince of Songkla University Hat Yai Songkhla 90110 Thailand
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9
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Wang G, Cai G, Zhang M, Wang Z, Li C, Zhang Y. Synthesis of polymeric emulsifiers based on ketoaldehyde resin and their application in emulsifying styrene/water two‐phase system. J Appl Polym Sci 2021. [DOI: 10.1002/app.52107] [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)
- Guolin Wang
- School of Chemical Engineering Zhengzhou University Zhengzhou China
| | - Guiting Cai
- School of Chemical Engineering Zhengzhou University Zhengzhou China
| | - Menghao Zhang
- School of Chemical Engineering Zhengzhou University Zhengzhou China
| | - Ziyu Wang
- School of Chemical Engineering Zhengzhou University Zhengzhou China
| | - Chaofeng Li
- School of Chemical Engineering Zhengzhou University Zhengzhou China
| | - Yanwu Zhang
- School of Chemical Engineering Zhengzhou University Zhengzhou China
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10
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Savaş B, Çatıker E, Öztürk T, Meyvacı E. Synthesis and characterization of poly(α-methyl β-alanine)-poly(ε-caprolactone) tri arm star polymer by hydrogen transfer polymerization, ring-opening polymerization and "click" chemistry. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-020-02367-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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11
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Chroni A, Mavromoustakos T, Pispas S. Biocompatible PEO-b-PCL Nanosized Micelles as Drug Carriers: Structure and Drug-Polymer Interactions. NANOMATERIALS 2020; 10:nano10091872. [PMID: 32962043 PMCID: PMC7559820 DOI: 10.3390/nano10091872] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/14/2020] [Accepted: 09/16/2020] [Indexed: 12/12/2022]
Abstract
We report on the preparation of drug nanocarriers by encapsulating losartan potassium (LSR) into amphiphilic block copolymer micelles, utilizing the biocompatible/biodegradable poly(ethylene oxide)-b-poly(ε-caprolactone) (PEO-b-PCL) diblock copolymer. The PEO-b-PCL micelles and LSR-loaded PEO-b-PCL nanocarriers were prepared by organic solvent evaporation method (OSEM). Light scattering and nuclear magnetic resonance (NMR) provide information on micelle structure and polymer-drug interactions. According to dynamic light scattering (DLS) analysis, the PEO-b-PCL micelles and LSR-loaded PEO-b-PCL nanocarriers formed nanostructures in the range of 17-26 nm in aqueous milieu. Attenuated total reflection Fourier transform infrared (ATR-FTIR) and ultraviolet-visible (UV-Vis) measurements confirmed the presence of LSR in the polymeric drug solutions. NMR results proved the successful encapsulation of LSR into the PEO-b-PCL micelles by analyzing the drug-micelles intermolecular interactions. Specifically, 2D-NOESY experiments clearly evidenced the intermolecular interactions between the biphenyl ring and butyl chain of LSR structure with the methylene signals of PCL. Additionally, NMR studies as a function of temperature demonstrated an unexpected, enhanced proton mobility of the PEO-b-PCL micellar core in D2O solutions, probably caused by the melting of the PCL hydrophobic core.
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Affiliation(s)
- Angeliki Chroni
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece;
| | - Thomas Mavromoustakos
- Department of Chemistry, National and Kapodistrian University of Athens, Panepistimioupolis, 15771 Zografou, Greece;
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece;
- Correspondence: ; Tel.: +30-210-727-3824
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12
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Çatıker E, Öztürk T, Atakay M, Salih B. Synthesis and characterization of the ABA-type poly(ester-ether-ester) block copolymers. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2020. [DOI: 10.1080/10601325.2020.1745080] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Efkan Çatıker
- Department of Chemistry, Ordu University, Ordu, Turkey
| | - Temel Öztürk
- Department of Chemistry, Giresun University, Giresun, Turkey
| | - Mehmet Atakay
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Bekir Salih
- Department of Chemistry, Hacettepe University, Ankara, Turkey
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13
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Ianiro A, González García Á, Wijker S, Patterson JP, Esteves ACC, Tuinier R. Controlling the Spatial Distribution of Solubilized Compounds within Copolymer Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:4776-4786. [PMID: 30811942 PMCID: PMC6448116 DOI: 10.1021/acs.langmuir.9b00180] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 02/25/2019] [Indexed: 05/29/2023]
Abstract
The solubilization of lyophobic compounds in block copolymer micelles has been extensively investigated but remains only partially understood. There is a need to understand the fundamental parameters that determine the spatial distribution of the solubilized compounds within the micelles. Controlling this feature is a key aspect in the design of drug delivery systems with tailored release properties. Using Scheutjens-Fleer self-consistent field (SF-SCF) computations, we found that solubilization is regulated by a complex interplay between enthalpic and entropic contributions and that the spatial distribution can be controlled by the concentration and solubility of the guest compound in the dispersion medium. Upon solubilization, a characteristic change in size and mass of the micelles is predicted. This can be used as a fingerprint to indirectly assess the spatial distribution. Based on these findings, we developed two experimental protocols to control and assess the spatial distribution of lyophobic compounds within block copolymer micelles.
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Affiliation(s)
- Alessandro Ianiro
- Laboratory
of Physical Chemistry, Department of Chemical Engineering
and Chemistry and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Álvaro González García
- Laboratory
of Physical Chemistry, Department of Chemical Engineering
and Chemistry and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Van’t
Hoff Laboratory for Physical and Colloid Chemistry, Department of
Chemistry and Debye Institute, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Stefan Wijker
- Laboratory
of Physical Chemistry, Department of Chemical Engineering
and Chemistry and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Joseph P. Patterson
- Department
of Chemistry, University of California,
Irvine, C 92697 Irvine, United States
| | - A. Catarina C. Esteves
- Laboratory
of Physical Chemistry, Department of Chemical Engineering
and Chemistry and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Remco Tuinier
- Laboratory
of Physical Chemistry, Department of Chemical Engineering
and Chemistry and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Van’t
Hoff Laboratory for Physical and Colloid Chemistry, Department of
Chemistry and Debye Institute, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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14
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A systematic study of macrodiols and poly(ester-urethanes) derived from α,ω-hydroxy telechelic poly(ε-caprolactone) (HOPCLOH) with different ether [CH2CH2O]m groups. Synthesis and characterization. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-018-1682-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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15
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Latex nanoparticles surface modified via the layer-by-layer technique for two drugs loading. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.04.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Laredj-Bourezg F, Bolzinger MA, Pelletier J, Valour JP, Rovère MR, Smatti B, Chevalier Y. Skin delivery by block copolymer nanoparticles (block copolymer micelles). Int J Pharm 2015; 496:1034-46. [DOI: 10.1016/j.ijpharm.2015.11.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/12/2015] [Accepted: 11/14/2015] [Indexed: 11/29/2022]
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17
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Pullulan-Based Polymer Surfactants for Vinyl Acetate Miniemulsion Polymerization: Kinetics and Colloidal Stability Investigations. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Shin K, Kim JW, Park H, Choi HS, Chae PS, Nam YS, Kim JW. Fabrication and stabilization of nanoscale emulsions by formation of a thin polymer membrane at the oil–water interface. RSC Adv 2015. [DOI: 10.1039/c5ra03872c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Extremely stable O/W nanoemulsions are fabricated by effective assembly of an amphiphilic PEO-b-PCL copolymer at the oil–water interface during phase inversion, which favors formation of a thin PEO-b-PCL film at the interface.
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Affiliation(s)
- Kyounghee Shin
- Department of Bionano Technology
- Hanyang University
- Ansan
- Republic of Korea
- R&D Center
| | - Jeong Won Kim
- Department of Bionano Technology
- Hanyang University
- Ansan
- Republic of Korea
| | - Hanhee Park
- Department of Applied Chemistry
- Hanyang University
- Ansan
- Republic of Korea
| | | | - Pil Seok Chae
- Department of Bionano Technology
- Hanyang University
- Ansan
- Republic of Korea
| | - Yoon Sung Nam
- Department of Materials Science and Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Republic of Korea
| | - Jin Woong Kim
- Department of Bionano Technology
- Hanyang University
- Ansan
- Republic of Korea
- Department of Applied Chemistry
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19
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Sereti V, Zoumpanioti M, Papadimitriou V, Pispas S, Xenakis A. Biocolloids Based on Amphiphilic Block Copolymers as a Medium for Enzyme Encapsulation. J Phys Chem B 2014; 118:9808-16. [DOI: 10.1021/jp504449y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Victoria Sereti
- Institute of Biology, Medicinal Chemistry & Biotechnology and ‡Theoretical & Physical Chemistry Institute, National Hellenic Research Foundation, 48, Vassileos Constantinou Avenue, Athens 11635, Greece
| | - Maria Zoumpanioti
- Institute of Biology, Medicinal Chemistry & Biotechnology and ‡Theoretical & Physical Chemistry Institute, National Hellenic Research Foundation, 48, Vassileos Constantinou Avenue, Athens 11635, Greece
| | - Vassiliki Papadimitriou
- Institute of Biology, Medicinal Chemistry & Biotechnology and ‡Theoretical & Physical Chemistry Institute, National Hellenic Research Foundation, 48, Vassileos Constantinou Avenue, Athens 11635, Greece
| | - Stergios Pispas
- Institute of Biology, Medicinal Chemistry & Biotechnology and ‡Theoretical & Physical Chemistry Institute, National Hellenic Research Foundation, 48, Vassileos Constantinou Avenue, Athens 11635, Greece
| | - Aristotelis Xenakis
- Institute of Biology, Medicinal Chemistry & Biotechnology and ‡Theoretical & Physical Chemistry Institute, National Hellenic Research Foundation, 48, Vassileos Constantinou Avenue, Athens 11635, Greece
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20
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Rizzarelli P, Carroccio S. Modern mass spectrometry in the characterization and degradation of biodegradable polymers. Anal Chim Acta 2014; 808:18-43. [DOI: 10.1016/j.aca.2013.11.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 10/18/2013] [Accepted: 11/04/2013] [Indexed: 01/06/2023]
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21
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Landfester K, Mailänder V. Nanocapsules with specific targeting and release properties using miniemulsion polymerization. Expert Opin Drug Deliv 2013; 10:593-609. [DOI: 10.1517/17425247.2013.772976] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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22
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Effect of solution pH on the stability of mixed silica -alumina suspension in the presence of polyacrylic acid (PAA) with different molecular weights. OPEN CHEM 2013. [DOI: 10.2478/s11532-012-0136-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractThe influence of solution pH (in the range 3–9) on mixed silica-alumina suspension in the absence and presence of polyacrylic acid (PAA) was studied. The composition of the adsorbent was SiO2 (97%) and Al2O3 (3%). The turbidimetry method was applied to record changes in the stability of the investigated systems as a function of time. It was shown that the suspension without the polymer is less stable at pH 3, whereas at pH 6 and 9, the systems were stable. PAA with molecular weights 100 000 and 240 000 at pH 3 (improvement of system stability conditions) and PAA 2 000 at pH 6 (deterioration of suspension stability) have a great effect on the silica-alumina suspension stability. The stabilization-flocculation properties of polyacrylic acid are a result of a specific conformation of its chains on the solid surface where it depends on the solution pH and the polymer molecular weight.
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23
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Laredj-Bourezg F, Chevalier Y, Boyron O, Bolzinger MA. Emulsions stabilized with organic solid particles. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2011.12.064] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Glover AL, Nikles SM, Nikles JA, Brazel CS, Nikles DE. Polymer micelles with crystalline cores for thermally triggered release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:10653-60. [PMID: 22726124 PMCID: PMC3415377 DOI: 10.1021/la300895c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Interest in the use of poly(ethylene glycol)-b-polycaprolactone diblock copolymers in a targeted, magnetically triggered drug delivery system has led to this study of the phase behavior of the polycaprolactone core. Four different diblock copolymers were prepared by the ring-opening polymerization of caprolactone from the alcohol terminus of poly(ethylene glycol) monomethylether, M(n) ≈ 2000. The critical micelle concentration depended on the degree of polymerization for the polycaprolactone block and was in the range of 2.9 to 41 mg/L. Differential scanning calorimetry curves for polymer solutions with a concentration above the critical micelle concentration showed a melting endotherm in the range of 40 to 45 °C, indicating the polycaprolactone core was semicrystalline. Pyrene was entrapped in the micelle core without interfering with the ability of the polycaprolactone to crystallize. When the polymer solution was heated above the melting point of the micelle core, the pyrene was free to leave the core. Temperature-dependent measurements of the critical micelle concentration and temperature-dependent dynamic light scattering showed that the micelles remain intact at temperatures above the melting point of the polycaprolactone core.
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Affiliation(s)
- Amanda L. Glover
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336
| | - Sarah M. Nikles
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336
| | - Jacqueline A. Nikles
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama 35294-1240
| | - Christopher S. Brazel
- Department of Chemical & Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487-0203
| | - David E. Nikles
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336
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25
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Synthesis of surface-functionalized polystyrene sub-micron spheres using novel amphiphilic comonomer. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.05.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Functionalized (poly(ɛ-caprolactone))2-poly(ethylene glycol) nanoparticles with grafting nicotinic acid as drug carriers. Int J Pharm 2012; 423:562-70. [DOI: 10.1016/j.ijpharm.2011.11.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Revised: 10/30/2011] [Accepted: 11/23/2011] [Indexed: 11/21/2022]
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Tissandier C, Diop N, Martini M, Roux S, Tillement O, Hamaide T. One-pot synthesis of hybrid multifunctional silica nanoparticles with tunable coating by click chemistry in reverse w/o microemulsion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:209-218. [PMID: 22066823 DOI: 10.1021/la203580q] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Multifunctional hybrid silica nanoparticles with a fluorescent core and tunable organic or polymeric shell can easily be prepared by a sol-gel process followed by 1,3 dipolar cycloaddition (CuAAC) in the same reverse quaternary W/O microemulsion. Compared to a classical multistep process, this one-pot synthesis reduces greatly the number of purification steps and avoids aggregation phenomena. The confinement of reactants inside the micellar system gives rise to a noticeable increase of the CuAAC reaction rate. In addition, using simultaneously two different substrates for CuAAC on silica allows us to obtain directly multifunctional hybrid nanoparticles displaying a double grafting without any separation or purification steps except the final recovery by centrifugation, which opens the door to a tunable coating of the nanoparticles. Particularly, the hydrophilic-lipophilic balance of the coating can be adjusted by implementing the pertinent MPEG:dodecyl azide ratio. As an application, the great versatility of this strategy has been proved by the one-pot synthesis of fluorescent silica nanoparticles with a PEG coating and encapsulating silver clusters.
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Affiliation(s)
- Cédric Tissandier
- Ingénierie des Matériaux Polymères, Université Claude Bernard Lyon 1, UMR CNRS 5223, 15 Bd Latarjet, 69622 Villeurbanne Cedex, France
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Bhatt S, Pulpytel J, Mirshahi M, Arefi-Khonsari F. Nano thick poly(ε-caprolactone)-poly(ethylene glycol) coatings developed by catalyst-free plasma assisted copolymerization process for biomedical applications. RSC Adv 2012. [DOI: 10.1039/c2ra21211k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Zhao W, He C, Wang H, Su B, Sun S, Zhao C. Improved Antifouling Property of Polyethersulfone Hollow Fiber Membranes Using Additive of Poly(ethylene glycol) Methyl Ether-b-Poly(styrene) Copolymers. Ind Eng Chem Res 2011. [DOI: 10.1021/ie102251v] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Weifeng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Chao He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Huiyuan Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Baihai Su
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Shudong Sun
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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Ahmed H, Trathnigg B, Kappe CO, Saf R. Synthesis of poly(ε-caprolactone) diols and EO–CL block copolymers and their characterization by liquid chromatography and MALDI-TOF-MS. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2009.12.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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31
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Hua D, Tang J, Jiang J, Zhu X, Bai R. A Facile Approach for Preparation of Phenylphosphinic Acid-Functionalized PSt Microspheres by Emulsion Polymerization Using Amphiphilic Macro-RAFT Agent as Emulsifier. Macromolecules 2009. [DOI: 10.1021/ma9018334] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daoben Hua
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Jing Tang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Jianlin Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Xiulin Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Ruke Bai
- Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
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Durand A, Marie E. Macromolecular surfactants for miniemulsion polymerization. Adv Colloid Interface Sci 2009; 150:90-105. [PMID: 19660729 DOI: 10.1016/j.cis.2009.07.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2009] [Revised: 06/30/2009] [Accepted: 07/01/2009] [Indexed: 11/26/2022]
Abstract
The use of polymeric surfactants as stabilizers in miniemulsion polymerization was reviewed. The structural characteristics of reported polymeric surfactants were detailed and compared. The concept of multi-functional polymeric surfactants was evidenced. The specificities brought by polymeric surfactants in the process of miniemulsion polymerization in comparison to molecular surfactants were analysed for the stability of the initial monomer emulsion, polymerization kinetics and characteristics of the obtained latexes. The contribution of polymeric surfactants to the control of the characteristics of the obtained nanoparticles was detailed with regard to the nature of the core material and to the surface coverage. Polymeric surfactants can be seen as powerful tools for the design of original nanoparticles. On the basis of the available data, possible research topics are suggested.
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Otman O, Boullanger P, Lafont D, Hamaide T. New Amphiphilic Glycopolymers Based on a Polycaprolactone-maleic anhydride Copolymer Backbone: Characterization by15N NMR and Application to Colloidal Stabilization of Nanoparticles. MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200800300] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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