|
1
|
Watanabe S, Okamoto K, Namikoshi T, Kohari Y, Murata M. Preparation of monodisperse fully aromatic polyimide particles via the polycondensation of diethyl hexafluoroisopropylidenediphthalate with 4,4′-diaminodiphenylether in ethylene glycol. Polym J 2018. [DOI: 10.1038/s41428-018-0156-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
|
2
|
Namikoshi T, Odahara K, Wakino A, Murata M, Watanabe S. Preparation of aliphatic–aromatic polyimide particles by polycondensation of diethyl hexafluoroisopropylidenediphthalate and diaminooctane in ethylene glycol. HIGH PERFORM POLYM 2014. [DOI: 10.1177/0954008314542474] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Polycondensation of nylon salt-type monomer composed of diethyl hexafluoroisopropylidenediphthalate and diaminooctane was performed at 130°C in ethylene glycol to form confetti-shaped particles. Before the polycondensation, the salt monomer solution was homogeneous. As the polycondensation proceeded, the solution became turbid and polyimide particles grew to around 7 μm for 8 h. After the polycondensation, small particles precipitated and got deposited onto large particles to form confetti-shaped particles. Rod-shaped particles were also formed by the polycondensation at low monomer concentration in a long reaction time. They were found to be crystalline in form.
Collapse
Affiliation(s)
- Takeshi Namikoshi
- Department of Materials Science and Engineering, Kitami Institute of Technology, Kitami, Hokkaido, Japan
| | - Keita Odahara
- Department of Materials Science and Engineering, Kitami Institute of Technology, Kitami, Hokkaido, Japan
| | - Akira Wakino
- Department of Materials Science and Engineering, Kitami Institute of Technology, Kitami, Hokkaido, Japan
| | - Miki Murata
- Department of Materials Science and Engineering, Kitami Institute of Technology, Kitami, Hokkaido, Japan
| | - Shinji Watanabe
- Department of Materials Science and Engineering, Kitami Institute of Technology, Kitami, Hokkaido, Japan
| |
Collapse
|
|
3
|
Li L, Wu L, Bu Z, Gong C, Li BG, Hungenberg KD. Graft Copolymerization of Styrene and Acrylonitrile in the Presence of Poly(propylene glycol): Particle Growth. MACROMOL REACT ENG 2012. [DOI: 10.1002/mren.201200014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
|
6
|
Yang W, Kaneko T, Liu XY, Chen MQ, Akashi M. Bulk Synthesis of Poly(tert-butyl methacrylate) Long Macromonomer with Narrow Distribution by Atom Transfer Radical Polymerization and Nucleophilic Substitution. CHEM LETT 2006. [DOI: 10.1246/cl.2006.222] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
|
7
|
Hamada K, Kaneko T, Chen MQ, Akashi M. One-step nanomorphology control of self-organized projection coronas in uniform polymeric nanoparticles. POLYMER 2005; 46:12166-12171. [PMID: 32287403 PMCID: PMC7111673 DOI: 10.1016/j.polymer.2005.10.085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2005] [Revised: 10/12/2005] [Accepted: 10/18/2005] [Indexed: 11/23/2022]
Abstract
Uniform polymeric nanoparticles with various morphologies of projection coronas like the viruses in the coronavirus group have been formed by the self-organization of macromolecular chains polymerizing in a dispersion system of styrene (St), acrylonitrile (AN) and poly(ethylene glycol) monomethoxymonomethacrylate (PEGm) in a polar solvent (water/ethanol). An increase in the water composition reduced the crystallization degree of AN units, resulting in a variety of the nanoparticle morphology such as the increased particle size, the reduced projection size, the increased projection number, and the decreased inter-projection distance. The difference in the projection morphology strongly affected a dispersibility in water.
Collapse
Affiliation(s)
- Kazuhiro Hamada
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan
| | - Tatsuo Kaneko
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan
- Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), Tokyo, Japan
| | - Ming Qing Chen
- School of Chemical and Material Engineering, Southern Yangtze University, Wuxi 214036, People's Republic of China
| | - Mitsuru Akashi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan
- Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), Tokyo, Japan
| |
Collapse
|
|
8
|
Kaneko T, Hamada K, Chen MQ, Akashi M. One-Step Formation of Morphologically Controlled Nanoparticles with Projection Coronas. Macromolecules 2003. [DOI: 10.1021/ma035276g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tatsuo Kaneko
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40, Korimoto, Kagoshima 890-0065, Japan; School of Chemical and Material Engineering, Southern Yangtze University, Wuxi 214036, P. R. China; and Department of Molecular Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita 565-0871, Japan and CREST, JST, 4-1-8, Hommachi, Kawaguchi, 332-0012, Japan
| | - Kazuhiro Hamada
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40, Korimoto, Kagoshima 890-0065, Japan; School of Chemical and Material Engineering, Southern Yangtze University, Wuxi 214036, P. R. China; and Department of Molecular Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita 565-0871, Japan and CREST, JST, 4-1-8, Hommachi, Kawaguchi, 332-0012, Japan
| | - Ming Qing Chen
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40, Korimoto, Kagoshima 890-0065, Japan; School of Chemical and Material Engineering, Southern Yangtze University, Wuxi 214036, P. R. China; and Department of Molecular Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita 565-0871, Japan and CREST, JST, 4-1-8, Hommachi, Kawaguchi, 332-0012, Japan
| | - Mitsuru Akashi
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40, Korimoto, Kagoshima 890-0065, Japan; School of Chemical and Material Engineering, Southern Yangtze University, Wuxi 214036, P. R. China; and Department of Molecular Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita 565-0871, Japan and CREST, JST, 4-1-8, Hommachi, Kawaguchi, 332-0012, Japan
| |
Collapse
|