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Synthesis of network polymers by ring-opening addition reaction of multi-functional epoxy and dithiol compounds. JOURNAL OF POLYMER RESEARCH 2023. [DOI: 10.1007/s10965-022-03429-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Naga N, Jinno M, Wang Y, Nakano T. The first space-filling polyhedrons of polymer cubic cells originated from Weaire-Phelan structure created by polymerization induced phase separation. Sci Rep 2022; 12:19141. [DOI: 10.1038/s41598-022-22058-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 10/10/2022] [Indexed: 11/11/2022] Open
Abstract
AbstractThe Weaire–Phelan structure is a three-dimensional structure composed of two different polyhedra having the same volume, i.e., pyritohedron and truncated hexagonal trapezohedron. It was proposed by Weaire and Phelan in 1993 as a solution of the Kelvin problem of filling space with no gaps with cells of minimum surface area and equal volume. It was found in physical systems including liquid foam and a metal alloy while it has never been constructed as organic materials. We report herewith the first polymeric Weaire–Phelan structure constructed through phase-separation of a single polymer species that is synthesized by simple polyaddition between tetrakis(3-mercaptopropionate) and 1,6-diisocyanatohexane. The structure has the order of micrometers and is amorphous unlike reported crystal structures similar to the Weaire–Phelan structure.
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Naga N, Arai R, Naruse Y, Ahmed K, Nageh H, Nakano T. Synthesis of porous polymers by polymerization‐induced phase separation in the addition reaction of multifunctional isocyanates and dithiol compounds. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Naofumi Naga
- Department of Applied Chemistry, College of Engineering Shibaura Institute of Technology Tokyo Japan
- Graduate School of Engineering & Science Shibaura Institute of Technology Tokyo Japan
| | - Riku Arai
- Graduate School of Engineering & Science Shibaura Institute of Technology Tokyo Japan
| | - Yutaka Naruse
- Department of Applied Chemistry, College of Engineering Shibaura Institute of Technology Tokyo Japan
| | - Kumkum Ahmed
- Innovative Global Program, SIT Research Laboratories, College of Engineering Shibaura Institute of Technology Tokyo Japan
| | - Hassan Nageh
- Institute for Catalysis and Graduate School of Chemical Sciences and Engineering Hokkaido University Sapporo Japan
| | - Tamaki Nakano
- Institute for Catalysis and Graduate School of Chemical Sciences and Engineering Hokkaido University Sapporo Japan
- Integrated Research Consortium on Chemical Sciences, Institute for Catalysis Hokkaido University Sapporo Japan
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Synthesis of porous polymers by means of Michael addition reaction of multifunctional acetoacetate and poly(ethylene glycol) diacrylate. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2021.110901] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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