1
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Okura S, Tsuji K, Norisuye T. Transition from liquid droplet to solid particle investigated by ultrasonic spectroscopy. ULTRASONICS 2023; 128:106879. [PMID: 36334325 DOI: 10.1016/j.ultras.2022.106879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/26/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
The size distribution and elastic modulus of micron-sized particles dispersed in liquid can be quantitatively evaluated by ultrasonic spectroscopy at a megahertz frequency range combined with a scattering theory. Conventional theories dealing with the wavelength comparable with the micron-sized particles consider viscosity for liquid droplets in emulsions and elasticity for solid particles in suspension, but very few studies have simultaneously considered viscosity and elasticity for the dispersed phase. In this study, a toluene (Tol) solution of polystyrene (PS) was dispersed in a continuous phase (water), and the ultrasonic properties of the PS-Tol/water emulsion were investigated. Furthermore, when Tol is dried from the PS-Tol droplet, spherical solid PS particles are obtained in water. Using such a drying-in-liquid method, the processes of solid PS particle formation from PS-Tol liquid droplets were analyzed ultrasonically. Since these solid PS particles are in a glassy state at room temperature, the process from emulsion to solid polymer must go through a rubbery state or transition region, where viscosity becomes important in addition to elasticity for solid particles. The objective of this study is to demonstrate a methodology to quantitatively reproduce the ultrasonic spectra of microparticles associated with the drying of organic solvents using a model that takes account of both elasticity and viscous loss.
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Affiliation(s)
- Sota Okura
- Department of Macromolecular Science and Engineering, Graduate School of Science & Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kazuto Tsuji
- Department of Macromolecular Science and Engineering, Graduate School of Science & Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Tomohisa Norisuye
- Department of Macromolecular Science and Engineering, Graduate School of Science & Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
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2
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Omura T, Suzuki T, Minami H. Preparation of Salt-Responsive Hollow Hydrophilic Polymer Particles by Inverse Suspension Polymerization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:9371-9377. [PMID: 34333964 DOI: 10.1021/acs.langmuir.1c00834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hydrophilic polymer particles with a hollow structure have potential applications such as carriers for hydrophilic drugs. However, there are few reports on preparation and morphology control of such particles via a simple method. In this study, hollow hydrophilic polymer particles were prepared by inverse suspension polymerization for water droplets containing 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) anions, 1-vinylimidazole (VIm) cations, oligo(ethylene glycol) diacrylate (OEGDA), dextran, and an initiator via the self-assembling phase-separated polymer (SaPSeP) method developed in our lab. The inner morphology of the particle could be controlled (as single- or multi-hollow structures) by changing the concentrations of the OEGDA and the dextran. The obtained hollow particles could encapsulate a hydrophilic fluorescent substance in their hollow region when the substance was added to the primary droplets before polymerization. In addition, the poly(AMPS-co-VIm-co-OEGDA) shell of the particles exhibited an ionic cross-linked structure, which could be stimulated by salt. The poly(AMPS-co-VIm-co-OEGDA) hollow particles with the encapsulated substance released the substance when salt was added to the dispersion. These results indicated that the applicability of the SaPSeP method can be broadened for morphology control of the hydrophilic polymer particles encapsulating water-soluble materials.
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Affiliation(s)
- Taro Omura
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe 657-8501, Japan
| | - Toyoko Suzuki
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe 657-8501, Japan
| | - Hideto Minami
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe 657-8501, Japan
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3
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Minami H. Preparation and Morphology Control of Poly(ionic liquid) Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:8668-8679. [PMID: 32633982 DOI: 10.1021/acs.langmuir.0c01182] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Poly(ionic liquid)s (PILs) are prepared by the polymerization of ionic liquid (IL) monomers that have polymerizable groups on their cationic or anionic component. PILs also share many of the characteristic properties of ILs and can be used in various materials such as CO2 sorbents, polymer electrolytes, dispersants, and microwave-absorbing materials. In this feature article, we survey our research, focusing on the preparation of PILs in the particulate state (PIL particles) and on the morphological control of the PIL particles, including (1) the preparation of PIL particles by dispersion polymerization and emulsion polymerization, (2) control of the morphology of composite particles consisting of a PIL and poly(methyl methacrylate) (PMMA), (3) the preparation of hollow particles with a PIL shell, and (4) the preparation of PIL particles containing reduced graphene oxide (rGO). The size of the obtained PIL particles could be controlled through a modification of the synthesis conditions and the mode of polymerization (i.e., dispersion polymerization or emulsion polymerization). The obtained PIL particles maintained the characteristic properties of the corresponding ILs; moreover, the solubility of the PIL particles could be easily modified by changing their counteranion. Using seeded polymerization, we prepared PMMA/PIL composite polymer particles and subsequently demonstrated that their morphology can be manipulated to yield a core-shell or Janus structure. Hollow particles consisting of a PIL shell were also prepared, and modification of the polarity and penetration behavior of the shell through anion exchange was demonstrated.
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Affiliation(s)
- Hideto Minami
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan
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4
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Kim DI, Park JH, Seo H, Hong SG, Kim HJ, Ahn H, Kim J, Moon GD, Hyun DC. Polymer particles with controllable and complex structures for high immobilization of noble-metal nanoparticles. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2019.11.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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5
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Ullah MW, Thao NTP, Sugimoto T, Haraguchi N. Synthesis of core-corona polymer microsphere-supported cinchonidinium salt and its application to asymmetric synthesis. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.110392] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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6
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Pholsrimuang P, Ngernchuklin P, Chaiyasat P. Preparation of high performance copolymer microcapsule encapsulated heat storage material without supercooling. POLYM-PLAST TECH MAT 2019. [DOI: 10.1080/25740881.2019.1576202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Priyagorn Pholsrimuang
- Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Thanyaburi, Thailand
| | - Piyalak Ngernchuklin
- Expert Centre of Innovative Materials, Thailand Institute of Scientific and Technological Research (TISTR), Khlong Luang, Thailand
| | - Preeyaporn Chaiyasat
- Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Thanyaburi, Thailand
- Advanced Materials Design and Development (AMDD) Research Unit, Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Thanyaburi, Thailand
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7
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Tangsongcharoen W, Punyamoonwongsa P, Chaiyasat P. High performance biocompatible cellulose‐based microcapsules encapsulating gallic acid prepared by inverse microsuspension polymerization. POLYM INT 2019. [DOI: 10.1002/pi.5757] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Wichsuda Tangsongcharoen
- Department of Chemistry, Faculty of Science and TechnologyRajamangala University of Technology Thanyaburi Pathum Thani Thailand
| | | | - Preeyaporn Chaiyasat
- Department of Chemistry, Faculty of Science and TechnologyRajamangala University of Technology Thanyaburi Pathum Thani Thailand
- Advanced Materials Design and Development (AMDD) Research Unit, Faculty of Science and TechnologyRajamangala University of Technology Thanyaburi Pathum Thani Thailand
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8
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Liu S, Huang Z, Li F, Yan T, Fu S, Tian R, Hou C, Luo Q, Xu J, Liu J. Supramolecular polymer nanocapsules by enzymatic covalent condensation: biocompatible and biodegradable drug-delivery systems for chemo-photothermal anticancer therapy. Polym Chem 2019. [DOI: 10.1039/c9py00523d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supramolecular polymer nanocapsules were constructed by enzymatic covalent condensation and they acted as drug-delivery systems for chemo-photothermal anticancer therapy.
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9
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Cai Y, Yan W, Peng X, Liang M, Yu L, Zou H. Influence of solubility parameter difference between monomer and porogen on structures of poly (acrylonitrile-styrene-divinylbenzene) resins. J Appl Polym Sci 2018. [DOI: 10.1002/app.46979] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yuanbo Cai
- The State Key Lab of Polymer Materials Engineering; Polymer Research Institute of Sichuan University; Chengdu 610065
| | - Wu Yan
- China Geological Survey Institute of Multipurpose Utilization of Mineral Resources; Chengdu 610041
| | - Xuesong Peng
- The State Key Lab of Polymer Materials Engineering; Polymer Research Institute of Sichuan University; Chengdu 610065
| | - Mei Liang
- The State Key Lab of Polymer Materials Engineering; Polymer Research Institute of Sichuan University; Chengdu 610065
| | - Lin Yu
- The State Key Lab of Polymer Materials Engineering; Polymer Research Institute of Sichuan University; Chengdu 610065
| | - Huawei Zou
- The State Key Lab of Polymer Materials Engineering; Polymer Research Institute of Sichuan University; Chengdu 610065
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Shaw LA, Chizari S, Shusteff M, Naghsh-Nilchi H, Di Carlo D, Hopkins JB. Scanning two-photon continuous flow lithography for synthesis of high-resolution 3D microparticles. OPTICS EXPRESS 2018; 26:13543-13548. [PMID: 29801378 DOI: 10.1364/oe.26.013543] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 05/08/2018] [Indexed: 06/08/2023]
Abstract
Demand continues to rise for custom-fabricated and engineered colloidal microparticles across a breadth of application areas. This paper demonstrates an improvement in the fabrication rate of high-resolution 3D colloidal particles by using two-photon scanning lithography within a microfluidic channel. To accomplish this, we present (1) an experimental setup that supports fast, 3D scanning by synchronizing a galvanometer, piezoelectric stage, and an acousto-optic switch, and (2) a new technique for modifying the laser's scan path to compensate for the relative motion of the rapidly-flowing photopolymer medium. The result is an instrument that allows for rapid conveyor-belt-like fabrication of colloidal objects with arbitrary 3D shapes and micron-resolution features.
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11
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Ishiwata T, Michibata A, Kokado K, Ferlay S, Hosseini MW, Sada K. Box-like gel capsules from heterostructures based on a core–shell MOF as a template of crystal crosslinking. Chem Commun (Camb) 2018; 54:1437-1440. [DOI: 10.1039/c7cc07158b] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cubic polymer capsules (PCs) were obtained using a crystal crosslinking (CC) method on core–shell MOF crystals, with a well-defined hollow cubic shape reflecting the heterostructure of the template.
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Affiliation(s)
- Takumi Ishiwata
- Graduate School of Chemical Sciences and Engineering, and Faculty of Science
- Hokkaido University
- Sapporo
- Japan
| | - Ayano Michibata
- Graduate School of Chemical Sciences and Engineering, and Faculty of Science
- Hokkaido University
- Sapporo
- Japan
| | - Kenta Kokado
- Graduate School of Chemical Sciences and Engineering, and Faculty of Science
- Hokkaido University
- Sapporo
- Japan
| | - Sylvie Ferlay
- Molecular Tectonics Laboratory
- University of Strasbourg
- UMR UdS-CNRS 7140
- Institut Le Bel
- 67000 Strasbourg
| | - Mir Wais Hosseini
- Molecular Tectonics Laboratory
- University of Strasbourg
- UMR UdS-CNRS 7140
- Institut Le Bel
- 67000 Strasbourg
| | - Kazuki Sada
- Graduate School of Chemical Sciences and Engineering, and Faculty of Science
- Hokkaido University
- Sapporo
- Japan
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12
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Facile preparation of gold-coated polydimethylsiloxane particles by in situ reduction without pre-synthesized seed. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Minami H, Kojima A, Suzuki T. Preparation of Flattened Cross-Linked Hollow Particles by Suspension Polymerization in a Solid Dispersion Medium. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1541-1546. [PMID: 28125884 DOI: 10.1021/acs.langmuir.6b04654] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Flattened cross-linked hollow poly(divinylbenzene) (PDVB) particles with encapsulated n-hexadecane (HD) were successfully prepared through suspension polymerization using the self-assembling of phase-separated polymer (SaPSeP) method, in which the solid dispersion medium was gelled by gellan gum and compressed. The solid phase induced by gellan gum can be easily changed to a liquid state by heating, allowing the obtained particles to be easily recovered after polymerization. When the polymerization was conducted in the solid dispersion medium without compression, spherical hollow PDVB/HD composite particles were obtained. In contrast, when the polymerization was conducted with the compression of the solid dispersion medium, flattened hollow PDVB/HD composite particles were obtained. The shape of the flattened hollow polymer particles was controlled by changing the compression ratio of the solid phase, and the size could also be controlled by changing the DVB/HD droplet size using the Shirasu porous glass membrane-emulsification technique. Furthermore, flattened hollow particles larger than 20 μm in size were obtained, but it was difficult to obtain spherical hollow particles of such large size using the SaPSeP method.
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Affiliation(s)
- Hideto Minami
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University , Rokko, Nada, Kobe 657-8501, Japan
| | - Akihiro Kojima
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University , Rokko, Nada, Kobe 657-8501, Japan
| | - Toyoko Suzuki
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University , Rokko, Nada, Kobe 657-8501, Japan
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14
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15
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Suzuki T, Mizowaki T, Okubo M. Versatile synthesis of high performance, crosslinked polymer microcapsules with encapsulated n-hexadecane as heat storage materials by utilizing microsuspension controlled/living radical polymerization (ms CLRP) of ethylene glycol dimethacrylate with the SaPSeP method. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.109] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Guo Y, Jia Z. Novel sandwich structure adsorptive membranes for removal of 4-nitrotoluene from water. JOURNAL OF HAZARDOUS MATERIALS 2016; 317:295-302. [PMID: 27322899 DOI: 10.1016/j.jhazmat.2016.06.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 06/01/2016] [Accepted: 06/06/2016] [Indexed: 06/06/2023]
Abstract
Novel sandwich PES-SPES/PS-PDVB/PTFE adsorptive membranes were prepared by a filtration/immersion precipitation method and employed for the removal of 4-nitrotoluene from water. The static adsorption thermodynamics, kinetics, dynamic adsorption/desorption and membrane reusability were investigated. The results showed that the Freundlich model describes the adsorption isotherm satisfactorily. With increased PS-PDVB content, the maximum static adsorption capacity, partition coefficient, apparent adsorption rate constant, and dynamic adsorption capacity all significantly increased. The sandwich membranes showed much higher removal efficiency and adsorption capacity than those of mixed matrix membranes. With respect to dynamics adsorption/desorption, the sandwich membranes exhibited excellent reusability, with a removal efficiency greater than 95% even after five recycles.
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Affiliation(s)
- Yuexin Guo
- College of Chemistry, Beijing Normal University, Beijing 100875, PR China; School of Pharmacy, North China University of Science and Technology, Tangshan 063000, PR China
| | - Zhiqian Jia
- College of Chemistry, Beijing Normal University, Beijing 100875, PR China.
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17
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Wang X, Feng J, Bai Y, Zhang Q, Yin Y. Synthesis, Properties, and Applications of Hollow Micro-/Nanostructures. Chem Rev 2016; 116:10983-1060. [DOI: 10.1021/acs.chemrev.5b00731] [Citation(s) in RCA: 1044] [Impact Index Per Article: 130.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | | | - Qiao Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, People’s Republic of China
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18
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Electrospray synthesis and properties of hierarchically structured PLGA TIPS microspheres for use as controlled release technologies. J Colloid Interface Sci 2016; 467:220-229. [PMID: 26803601 DOI: 10.1016/j.jcis.2016.01.021] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 12/22/2015] [Accepted: 01/11/2016] [Indexed: 02/02/2023]
Abstract
Microsphere-based controlled release technologies have been utilized for the long-term delivery of proteins, peptides and antibiotics, although their synthesis poses substantial challenges owing to formulation complexities, lack of scalability, and cost. To address these shortcomings, we used the electrospray process as a reproducible, synthesis technique to manufacture highly porous (>94%) microspheres while maintaining control over particle structure and size. Here we report a successful formulation recipe used to generate spherical poly(lactic-co-glycolic) acid (PLGA) microspheres using the electrospray (ES) coupled with a novel thermally induced phase separation (TIPS) process with a tailored Liquid Nitrogen (LN2) collection scheme. We show how size, shape and porosity of resulting microspheres can be controlled by judiciously varying electrospray processing parameters and we demonstrate examples in which the particle size (and porosity) affect release kinetics. The effect of electrospray treatment on the particles and their physicochemical properties are characterized by scanning electron microscopy, confocal Raman microscopy, thermogravimetric analysis and mercury intrusion porosimetry. The microspheres manufactured here have successfully demonstrated long-term delivery (i.e. 1week) of an active agent, enabling sustained release of a dye with minimal physical degradation and have verified the potential of scalable electrospray technologies for an innovative TIPS-based microsphere production protocol.
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19
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Namwong S, Islam MZ, Noppalit S, Tangboriboonrat P, Chaiyasat P, Chaiyasat A. Encapsulation of octadecane in poly(divinylbenzene-co-methyl methacrylate) using phase inversion emulsification for droplet generation. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2016. [DOI: 10.1080/10601325.2016.1110452] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Cai S, Weng Z, Zheng Y, Zhao B, Gao Z, Gao C. High porosity microspheres with functional groups synthesized by thiol–yne click suspension polymerization. Polym Chem 2016. [DOI: 10.1039/c6py01824f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We employed a combination of thiol–yne click polymerization and suspension polymerization for the synthesis of porous epoxy-functionalized polymeric microspheres.
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Affiliation(s)
- Shengying Cai
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province
- Zhejiang University
- Hangzhou 310027
| | - Zhulin Weng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province
- Zhejiang University
- Hangzhou 310027
| | - Yaochen Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province
- Zhejiang University
- Hangzhou 310027
| | - Bo Zhao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province
- Zhejiang University
- Hangzhou 310027
| | - Zhengguo Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province
- Zhejiang University
- Hangzhou 310027
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province
- Zhejiang University
- Hangzhou 310027
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21
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Chaiyasat P, Namwong S, Okubo M, Chaiyasat A. Synthesis of micrometer-sized poly(methyl methacrylate) particles by microsuspension iodine transfer polymerization (ms ITP). RSC Adv 2016. [DOI: 10.1039/c6ra19288b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Micrometer-sized poly(methyl methacrylate) (PMMA) particles were successfully prepared without submicrometer-sized by-products for the first time by applying microsuspension iodine transfer polymerization with iodoform as a chain transfer agent.
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Affiliation(s)
- P. Chaiyasat
- Department of Chemistry
- Faculty of Science and Technology
- Rajamangala University of Technology Thanyaburi
- Pathumthani 12110
- Thailand
| | - S. Namwong
- Department of Chemistry
- Faculty of Science and Technology
- Rajamangala University of Technology Thanyaburi
- Pathumthani 12110
- Thailand
| | - M. Okubo
- Department of Chemistry
- Faculty of Science and Technology
- Rajamangala University of Technology Thanyaburi
- Pathumthani 12110
- Thailand
| | - A. Chaiyasat
- Department of Chemistry
- Faculty of Science and Technology
- Rajamangala University of Technology Thanyaburi
- Pathumthani 12110
- Thailand
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22
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Wang Z, Hong Q, Shi Y, Zhang J, Song Y, Wu S, Yang B. Formation of porous and Hollow polymer particles by urea treatment. POLYMER SCIENCE SERIES B 2015. [DOI: 10.1134/s1560090415070064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Chaiyasat P, Noppalit S, Okubo M, Chaiyasat A. Do encapsulated heat storage materials really retain their original thermal properties? Phys Chem Chem Phys 2015; 17:1053-9. [DOI: 10.1039/c4cp03458a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Which is right, ΔHm (J/g-paraffin wax) or ΔHm (J/g-capsules) to understand thermal properties of microcapsules?
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Affiliation(s)
- Preeyaporn Chaiyasat
- Department of Chemistry
- Faculty of Science and Technology
- Rajamangala University of Technology Thanyaburi
- Thanyaburi
- Thailand
| | - Sayrung Noppalit
- Department of Chemistry
- Faculty of Science and Technology
- Rajamangala University of Technology Thanyaburi
- Thanyaburi
- Thailand
| | - Masayoshi Okubo
- Department of Chemistry
- Faculty of Science and Technology
- Rajamangala University of Technology Thanyaburi
- Thanyaburi
- Thailand
| | - Amorn Chaiyasat
- Department of Chemistry
- Faculty of Science and Technology
- Rajamangala University of Technology Thanyaburi
- Thanyaburi
- Thailand
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24
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Yang F, Ma S, Zong W, Luo N, Lv M, Hu Y, Zhou L, Han X. Fabrication of pH sensitive microcapsules using soft templates and their application to drug release. RSC Adv 2015. [DOI: 10.1039/c5ra04476f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The schematic depiction of the process preparing hollow microcapsules and drug loading via layer-by-layer assembly technique.
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Affiliation(s)
- Fan Yang
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Shenghua Ma
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Wei Zong
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Nan Luo
- School of Life Science and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Minlan Lv
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Ying Hu
- School of Life Science and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Lili Zhou
- School of Pharmaceutical Engineering
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Xiaojun Han
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
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25
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Sala RL, Arantes TM, Longo E, Leite ER, Paranhos CM, Camargo ER. Evaluation of modified silica nanoparticles in carboxylated nitrile rubber nanocomposites. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.08.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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26
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27
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Preparation of porous microsphere-scaffolds by electrohydrodynamic forming and thermally induced phase separation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2488-98. [DOI: 10.1016/j.msec.2012.12.098] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 12/20/2012] [Accepted: 12/22/2012] [Indexed: 11/23/2022]
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28
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29
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Chaiyasat P, Islam MZ, Chaiyasat A. Preparation of poly(divinylbenzene) microencapsulated octadecane by microsuspension polymerization: oil droplets generated by phase inversion emulsification. RSC Adv 2013. [DOI: 10.1039/c3ra40802g] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Fan JB, Huang C, Jiang L, Wang S. Nanoporous microspheres: from controllable synthesis to healthcare applications. J Mater Chem B 2013; 1:2222-2235. [DOI: 10.1039/c3tb00021d] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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31
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Facile synthesis of hollow polymeric microparticles possessing various morphologies via seeded polymerization. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2722-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Macková H, Horák D, Petrovský E, Kovářová J. Magnetic hollow poly(N-isopropylacrylamide-co-N,N′-methylenebisacrylamide-co-glycidyl acrylate) particles prepared by inverse emulsion polymerization. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2609-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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33
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Zhu MQ, Chen GC, Li YM, Fan JB, Zhu MF, Tang Z. One-step template-free synthesis of monoporous polymer microspheres with uniform sizes via microwave-mediated dispersion polymerization. NANOSCALE 2011; 3:4608-4612. [PMID: 21947478 DOI: 10.1039/c1nr10920k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
One-step facile synthesis of monoporous polymer microspheres via microwave-controlled dispersion polymerization is introduced. This template-free method employing the dispersion polymerization of styrene under microwave irradiation induces directly the formation of uniform monoporous polymer microspheres, with controllable morphologies and sizes, which can be tuned by simply adjusting parameters for the synthesis. A comparison to conventional heating indicates that microwave irradiation plays a vital role in the formation of this novel morphology.
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Affiliation(s)
- Ming-Qiang Zhu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, PR China.
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Srisopa A, Imroz Ali AM, Mayes AG. Understanding and preventing the formation of deformed polymer particles during synthesis by a seeded polymerization method. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24636] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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35
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Rana VK, Park SS, Parambadath S, Kim MJ, Kim SH, Mishra S, Singh RP, Ha CS. Hierarchical mesoporous bio-polymer/silica composites co-templated by trimethyl chitosan and a surfactant for controlled drug delivery. MEDCHEMCOMM 2011. [DOI: 10.1039/c0md00222d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Controlling morphology of polymer microspheres by Shirasu porous glass (SPG) membrane emulsification and subsequent polymerization: from solid to hollow. Macromol Res 2010. [DOI: 10.1007/s13233-010-1202-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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37
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Li J, Stöver HDH. Pickering emulsion templated layer-by-layer assembly for making microcapsules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:15554-60. [PMID: 20812695 DOI: 10.1021/la1020498] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Pickering emulsions stabilized by poly(sodium styrenesulfonate) (PSS) surface-modified LUDOX CL particles were used as templates for the layer-by-layer (LbL) deposition of polyelectrolytes and charged nanoparticles to form composite shells. The microcapsules resulting from repeated LbL coating with poly(diallyldimethylammonium chloride) (PDADMAC) and PSS had porous walls due to the loose arrangement of the original nanoparticle aggregates at the oil-water interface, leading to significant microcapsule rupture and low encapsulation efficiency. Microcapsules formed by coating with PDADMAC and anionic LUDOX HS nanoparticles led to dense walls and stronger microcapsules, suitable for microencapsulation of hydrophobic materials with a wide range of polarities.
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Affiliation(s)
- Jian Li
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario, Canada L8S 4M1
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38
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Kim D, Kim E, Lee J, Hong S, Sung W, Lim N, Park CG, Kim K. Direct Synthesis of Polymer Nanocapsules: Self-Assembly of Polymer Hollow Spheres through Irreversible Covalent Bond Formation. J Am Chem Soc 2010; 132:9908-19. [DOI: 10.1021/ja1039242] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dongwoo Kim
- National Creative Research Initiative Center for Smart Supramolecules, Department of Chemistry, Division of Advanced Materials Science, Department of Physics, and Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31 Hyojadong, Pohang 790-784, Republic of Korea
| | - Eunju Kim
- National Creative Research Initiative Center for Smart Supramolecules, Department of Chemistry, Division of Advanced Materials Science, Department of Physics, and Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31 Hyojadong, Pohang 790-784, Republic of Korea
| | - Jiyeong Lee
- National Creative Research Initiative Center for Smart Supramolecules, Department of Chemistry, Division of Advanced Materials Science, Department of Physics, and Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31 Hyojadong, Pohang 790-784, Republic of Korea
| | - Soonsang Hong
- National Creative Research Initiative Center for Smart Supramolecules, Department of Chemistry, Division of Advanced Materials Science, Department of Physics, and Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31 Hyojadong, Pohang 790-784, Republic of Korea
| | - Wokyung Sung
- National Creative Research Initiative Center for Smart Supramolecules, Department of Chemistry, Division of Advanced Materials Science, Department of Physics, and Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31 Hyojadong, Pohang 790-784, Republic of Korea
| | - Namseok Lim
- National Creative Research Initiative Center for Smart Supramolecules, Department of Chemistry, Division of Advanced Materials Science, Department of Physics, and Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31 Hyojadong, Pohang 790-784, Republic of Korea
| | - Chan Gyung Park
- National Creative Research Initiative Center for Smart Supramolecules, Department of Chemistry, Division of Advanced Materials Science, Department of Physics, and Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31 Hyojadong, Pohang 790-784, Republic of Korea
| | - Kimoon Kim
- National Creative Research Initiative Center for Smart Supramolecules, Department of Chemistry, Division of Advanced Materials Science, Department of Physics, and Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31 Hyojadong, Pohang 790-784, Republic of Korea
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39
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Chang MW, Stride E, Edirisinghe M. A new method for the preparation of monoporous hollow microspheres. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:5115-5121. [PMID: 20095539 DOI: 10.1021/la903592s] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The feasibility of producing a hollow microsphere with a single hole in its shell by coaxial electrohydrodynamic atomization (CEHDA) is demonstrated. Polymethylsilsesquioxane (PMSQ) was used as a model shell material encapsulating a core of a volatile liquid, perfluorohexane (PFH), which was subsequently evaporated to produce the hollow microspheres. The diameters of the microspheres and of the single surface pore were controlled by varying the flow rate of the components, the concentration of the PMSQ solution, and the applied voltage in the CEHDA process. The particles were characterized by scanning electron microscopy, and the ranges obtained were 275-860 nm for the microsphere diameter and 35-135 nm for the pore size. The process overcomes several of the key problems associated with existing methods of monoporous microsphere formation including removing the need for elevated temperatures, multiple processing steps, and the use of surfactants and other additives.
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Affiliation(s)
- Ming-Wei Chang
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK
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40
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van Berkel KY, Hawker CJ. Tailored Composite Polymer-Metal Nanoparticles by Miniemulsion Polymerization and Thiol-ene Functionalization. JOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY 2010; 48:1594-1606. [PMID: 20657708 PMCID: PMC2908426 DOI: 10.1002/pola.23917] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A simple and modular synthetic approach, based on miniemulsion polymerization, has been developed for the fabrication of composite polymer-metal nanoparticle materials. The procedure produces well-defined composite structures consisting of gold, silver or MnFe(2)O(4) nanoparticles (∼10 nm in diameter) encapsulated within larger spherical nanoparticles of poly(divinylbenzene) (∼100 nm in diameter). This methodology readily permits the incorporation of multiple metal domains into a single polymeric particle, while still preserving the useful optical and magnetic properties of the metal nanoparticles. The morphology of the composite particles is retained upon increasing the inorganic content, and also upon redispersion in organic solvents. Finally, the ability to tailor the surface chemistry of the composite nanoparticles and incorporate steric stabilizing groups using simple thiol-ene chemistry is demonstrated.
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Affiliation(s)
- Kim Y. van Berkel
- Materials Research Laboratory and Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106
| | - Craig J. Hawker
- Materials Research Laboratory and Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106
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41
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Deng J, Yu Y, Dun S, Yang W. Hollow Polymer Particles with Nanoscale Pores and Reactive Groups on Their Rigid Shells: Preparation and Application as Nanoreactors. J Phys Chem B 2010; 114:2593-601. [DOI: 10.1021/jp909115p] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jianping Deng
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Yong Yu
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Shuo Dun
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Wantai Yang
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
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42
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Chaiyasat P, Suzuki T, Minami H, Okubo M. Thermal properties of hexadecane encapsulated in poly(divinylbenzene) particles. J Appl Polym Sci 2009. [DOI: 10.1002/app.29648] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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43
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Preparation of hollow poly (styrene-co-divinylbenzene) particles with variable cavity sizes and further fabrication of hollow TiO2 particles using solid poly (styrene-co-divinylbenzene) particles as templates. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.04.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Yu L, Gao Y, Yue X, Liu S, Dai Z. Novel hollow microcapsules based on iron-heparin complex multilayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:13723-13729. [PMID: 18855487 DOI: 10.1021/la802611b] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Iron-polysaccharide complex have been extensively utilized in the treatment of iron deficiency anemia for parenteral administration. Herein, a novel iron-heparin complexed hollow capsules with nanoscaled wall thickness have been fabricated by means of alternating deposition of ferric ions (III) (Fe+) and heparin (Hep) onto the surface of submicroscaled (488 nm) and microscaled (10.55 microm) polystyrene latex particles via both electrostatic interaction and chemical complexation processes, followed by dissolution of the cores using tetrahydrofuran. Confocal micrographs and atomic force microscopy (AFM) images prove that iron-heparin complexed submicroscaled hollow capsules keep spherical shapes in solution and even after drying. The activated partial thromboplastin time (APTT) assay shows that complexing with ferric ions do not compromise the catalytic capacity of heparin to promote antithrombin III-mediated thrombin inactivation. The anticoagulant activity value of (Fe3+/Hep)8 capsules is evaluated to be about 95.7 U/mg, indicating that approximately 0.55 mg heparin was in 1 mg powder of submicroscaled (Fe3+/Hep)8 hollow capsules. Compared with the same dosage of heparin, iron-heparin complexed hollow capsules display a more prolonged anticoagulant duration than heparin. All these results reveal that such submicroscaled iron-heparin complexed hollow capsules have application potential as an injectable anticoagulant vehicle.
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Affiliation(s)
- Lu Yu
- Nanomedicine and Biosensor Laboratory, Bio-X Center, Harbin Institute of Technology, Harbin 150080, China
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Minami H, Kanamori H, Hata Y, Okubo M. Preparation of microcapsules containing a curing agent for epoxy resin by polyaddition reaction with the self-assembly of phase-separated polymer method in an aqueous dispersed system. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:9254-9259. [PMID: 18680328 DOI: 10.1021/la800188j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
To prepare cured epoxy resin particles encapsulating a curing agent (diamine), the self-assembly of phase-separated polymer (SaPSeP) method was developed to be applicable to polyaddition reaction of a stoichiometrically imbalanced system. The SaPSeP method was developed by the authors for preparation of micrometer-sized, hollow cross-linked polymer particles by radical polymerization based on the self-assembly of phase-separated polymer at the inner interface of particles. Although a polyaddition reaction, in general, requires that the reactants are in stoichiometric balance for the cure reaction to proceed well, diamine was successfully encapsulated within a cured epoxy resin shell by utilizing the SaPSeP method regardless of stoichiometric imbalance. The results provide further support of the previously proposed SaPSeP mechanism for the formation of hollow particles. Moreover, such diamine capsules can be employed in one-component epoxy adhesives.
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Affiliation(s)
- Hideto Minami
- Graduate School of Engineering, Kobe University, Kobe 657-8501, Japan
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46
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Zhang C, Ding S, Li J, Xu H, Sun L, Wei W, Li C, Liu J, Qu X, Lu Y, Yang Z. Interpenetration network (IPN) assisted transcription of polymeric hollow spheres: A general approach towards composite hollow spheres. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.04.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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47
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Chaiyasat P, Ogino Y, Suzuki T, Okubo M. Influence of water domain formed in hexadecane core inside cross-linked capsule particle on thermal properties for heat storage application. Colloid Polym Sci 2008. [DOI: 10.1007/s00396-007-1831-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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48
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Hur SR, Kim YS, Won JC, Lee JH, Jung HM. Hollow hybrid spheres with silica inner shell for non-deformable, core exchangeable properties. Chem Commun (Camb) 2008:5405-7. [DOI: 10.1039/b811724a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Singh R, Garg A, Bandyopadhyaya R, Mishra B. Density fractionated hollow silica microspheres with high-yield by non-polymeric sol–gel/emulsion route. Colloids Surf A Physicochem Eng Asp 2007. [DOI: 10.1016/j.colsurfa.2007.05.064] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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50
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Han YS, Jeong GY, Lee SY, Kim HK. Hematite template route to hollow-type silica spheres. J SOLID STATE CHEM 2007. [DOI: 10.1016/j.jssc.2007.08.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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