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Hong JH, Mokudai H, Masaki T, Matsuno H, Tanaka K. Water-Induced Crystal Transition and Accelerated Relaxation Process of Polyamide 4 Chains in Microfibers. Biomacromolecules 2022; 23:3458-3468. [PMID: 35749630 DOI: 10.1021/acs.biomac.2c00618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Microplastics have recently been identified as one of the major contributors to environmental pollution. To design and control the biodegradability of polymer materials, it is crucial to obtain a better understanding of the aggregation states and thermal molecular motion of polymer chains in aqueous environments. Here, we focus on melt-spun microfibers of a promising biodegradable plastic, polyamide 4 (PA4), with a relatively greater number density of hydrolyzable amide groups, which is regarded as an alternative to polyamide 6. Aggregation states and thermal molecular motion of PA4 microfibers without/with a post-heating drawing treatment under dry and wet conditions were examined by attenuated total reflectance-Fourier transform infrared spectroscopy and wide-angle X-ray diffraction analysis in conjunction with dynamic mechanical analysis. Sorbed water molecules in the microfibers induced the crystal transition from a meta-stable γ-form to a thermodynamically stable α-form via activation of the molecular motion of PA4 chains. Also, the post-drawing treatment caused a partial structural change of PA4 chains, from an amorphous phase to a crystalline phase. These findings should be useful for designing PA4-based structural materials applicable for use in marine environments.
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Affiliation(s)
- Jin-Hyeok Hong
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
| | - Haruki Mokudai
- Central Research Laboratories, Kureha Corporation, Fukushima 974-8686, Japan
| | - Takashi Masaki
- Central Research Laboratories, Kureha Corporation, Fukushima 974-8686, Japan
| | - Hisao Matsuno
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan.,Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Keiji Tanaka
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan.,Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka 819-0395, Japan
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2
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Near-ambient pressure X-ray photoelectron spectroscopy for a bioinert polymer film at a water interface. Polym J 2021. [DOI: 10.1038/s41428-021-00485-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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4
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Ueda Y, Imoto H, Okada A, Xu H, Yamane H, Naka K. Hybrid polyurethanes composed of isobutyl-substituted open-cage silsesquioxane in the main chains: synthesis, properties and surface segregation in a polymer matrix. Polym Chem 2021. [DOI: 10.1039/d1py00329a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The resulting polyurethanes exhibited excellent optical transparency and surface hydrophobicity and acted as effective surface modifiers in poly(methyl methacrylate) (PMMA) by surface segregation.
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Affiliation(s)
- Yukiho Ueda
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Arifumi Okada
- Faculty of Materials Science and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Huaizhong Xu
- Faculty of Fiber Science and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Hideki Yamane
- Faculty of Fiber Science and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
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Yamamoto K, Kawaguchi D, Abe T, Komino T, Mamada M, Kabe T, Adachi C, Naka K, Tanaka K. Surface Segregation of a Star-Shaped Polyhedral Oligomeric Silsesquioxane in a Polymer Matrix. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9960-9966. [PMID: 32702993 DOI: 10.1021/acs.langmuir.0c01785] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A simple way to control only the surface properties of polymer materials, without changing the bulk properties, has long been desired. The segregation behavior when a component with a tiny amount fed into the matrix is thermodynamically enriched at the surface is one of the candidate methods. This capability was examined herein by focusing on a star-shaped polyhedral oligomeric silsesquioxane (s-POSS), where the central POSS unit is tethered to eight isobutyl-substituted POSS cages as a surface modifier. X-ray photoelectron spectroscopy revealed that the surface of a film of poly(methyl methacrylate) (PMMA) was almost completely covered with POSS units by adding just 5 wt % s-POSS to it. The segregated POSS dramatically altered the physical properties such as molecular motion and the mechanical and dielectric responses at the surface of the PMMA film. These findings make it clear that s-POSS is an excellent surface modifier for glassy polymers.
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Affiliation(s)
- Kentaro Yamamoto
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
| | - Daisuke Kawaguchi
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
- Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Tatsuki Abe
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
| | - Takeshi Komino
- Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, Fukuoka 819-0395, Japan
| | - Masashi Mamada
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
- Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, Fukuoka 819-0395, Japan
| | - Taizo Kabe
- Diffraction and Scattering Group I, Diffraction and Scattering Division, Center for Synchrotron Radiation Research, Japan Synchrotron Radiation Research Institute (JASRI), Hyogo 679-5148, Japan
| | - Chihaya Adachi
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
- Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, Fukuoka 819-0395, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
- Materials Innovation Lab, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Keiji Tanaka
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
- Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka 819-0395, Japan
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Matsuno H, Totani M, Yamamoto A, Haraguchi M, Ozawa M, Tanaka K. Water-induced surface reorganization of bioscaffolds composed of an amphiphilic hyperbranched polymer. Polym J 2019. [DOI: 10.1038/s41428-019-0212-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Fujii S, Minami S, Urayama K, Suenaga Y, Naito H, Miyashita O, Imoto H, Naka K. Beads-on-String-Shaped Poly(azomethine) Applicable for Solution Processing of Bilayer Devices Using a Same Solvent. ACS Macro Lett 2018; 7:641-645. [PMID: 35632970 DOI: 10.1021/acsmacrolett.8b00271] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Solvent-based deposition techniques for fabrication of organic field-effect transistors (OFETs) generally require orthogonal solvents for deposition of a conjugated polymer layer on a polymer gate insulator layer. Here, we found significantly reduced dissolution rate of the polymeric film in the same solvent after casting a homegeneous polymerization solution of para-bis(3-aminopropyl)hexaisobutyl-substituted T8 cage (1) with terephthalaldehyde. The limited dissolution rate in the solvent provided enough chance for fabrication of a regioregular poly(3-hexylthiophene-2,5-diyl) (P3HT) layer on the present polymer films without using an orthogonal solvent. The rheological properties indicate that physical interaction between the polymer chains provides the significantly reduced dissolution rate after the deposition onto a substrate without any cross-linking treatments.
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Affiliation(s)
| | | | | | - Yu Suenaga
- Department of Physics and Electronics, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Hiroyoshi Naito
- Department of Physics and Electronics, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
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Shimomura S, Matsuno H, Sanada K, Tanaka K. Cell adhesion on glassy scaffolds with a different mechanical response. J Mater Chem B 2017; 5:714-719. [PMID: 32263839 DOI: 10.1039/c6tb02617f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
L929 mouse fibroblast cells were cultured on bilayer films composed of a glassy poly(methyl methacrylate) (PMMA) on a rubbery polyisoprene. When the thickness of the upper PMMA film fell short of a threshold value of 50 nm, the adhesion of fibroblasts on it was remarkably suppressed. A possible explanation is that the surface of a bilayer with an ultrathin PMMA layer apparently becomes softer due to the manifestation of a mechanical response from the rubbery layer underneath. Finite element analysis shows that the shear stress at the bilayer surface induced by traction force of the attached cells is dependent on the PMMA thickness, similar to the cell adhesion behavior. These results make it clear that fibroblasts can sense the surface stiffness of polymers with a modulus even on the order of MPa.
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Yamamoto K, Hirai T, Oda Y, Kawaguchi D, Matsuno H, Tanaka K. A Polymer Interfacial Modifier Synthesized by Living Anionic Polymerization: Incorporation of Inorganic Blocks to Chain Ends. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201600473] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kentaro Yamamoto
- Department of Applied Chemistry; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Tomoyasu Hirai
- Institute for Materials Chemistry and Engineering; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Yukari Oda
- Department of Applied Chemistry; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Daisuke Kawaguchi
- Education Center for Global Leaders in Molecular Systems for Devices; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Hisao Matsuno
- Department of Applied Chemistry; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER); Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Keiji Tanaka
- Department of Applied Chemistry; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER); Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
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Sugimoto S, Oda Y, Hirata T, Matsuyama R, Matsuno H, Tanaka K. Surface segregation of a branched polymer with hydrophilic poly[2-(2-ethoxy)ethoxyethyl vinyl ether] side chains. Polym Chem 2017. [DOI: 10.1039/c6py01984f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A branched polymer with hydrophilic side chains was designed and prepared for anti-biofouling surface construction through its preferential segregation.
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Affiliation(s)
- Shin Sugimoto
- Department of Automotive Science
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - Yukari Oda
- Department of Applied Chemistry
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - Toyoaki Hirata
- Department of Applied Chemistry
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - Ruriko Matsuyama
- Department of Applied Chemistry
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - Hisao Matsuno
- Department of Applied Chemistry
- Kyushu University
- Fukuoka 819-0395
- Japan
- International Institute for Carbon-Neutral Energy Research (I2CNER)
| | - Keiji Tanaka
- Department of Automotive Science
- Kyushu University
- Fukuoka 819-0395
- Japan
- Department of Applied Chemistry
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12
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Lu X, Zhang C, Ulrich N, Xiao M, Ma YH, Chen Z. Studying Polymer Surfaces and Interfaces with Sum Frequency Generation Vibrational Spectroscopy. Anal Chem 2016; 89:466-489. [DOI: 10.1021/acs.analchem.6b04320] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Xiaolin Lu
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, Jiangsu Province, P. R. China
| | - Chi Zhang
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Nathan Ulrich
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Minyu Xiao
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Yong-Hao Ma
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, Jiangsu Province, P. R. China
| | - Zhan Chen
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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Matsuno H, Tsukamoto R, Kaneshiro Y, Yamada S, Tanaka K. Platelet Adhesion on Films of Poly(vinylene carbonate) and Its Derivatives. CHEM LETT 2016. [DOI: 10.1246/cl.160373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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