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Han J, Takahashi R, Kuang C, Sato T. Phase Separation Behavior of Aqueous Poly( N-isopropylacrylamide) Solutions Studied by Scattering Experiments. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5089-5097. [PMID: 34554751 DOI: 10.1021/acs.langmuir.1c01917] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We have investigated the colloidal phase-separating dilute solution of aqueous poly(N-isopropylacrylamide) (PNIPAM) with a molecular weight of 1.24 × 105 by small-angle X-ray scattering (SAXS) as well as static and dynamic light scattering (SLS and DLS). Those scattering experiments provide us with the average size and size distribution of concentrated-phase droplets and the concentration cconc of the coexisting concentrated phase. While the average droplet size is almost constant above 35 °C in the temperature-scan experiments, it is a decreasing function of temperature above 35 °C in the temperature-jump experiments. This heating rate dependence of the average droplet size arises from the fact that concentrated-phase droplets in the aqueous PNIPAM solution grow only in a limited temperature range (31.5-35 °C). The scattering results on the temperature dependence of cconc are combined with previously reported results of turbidity and DSC, giving the phase diagram of the Type II phase behavior with the off-zero critical point at high molecular weight.
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Affiliation(s)
- Jiayun Han
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Rintaro Takahashi
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Department of Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Chen Kuang
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Takahiro Sato
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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Kogo T, Shundo A, Wang C, Tanaka K. Spatial Heterogeneity Accompanying Gel Formation of Poly(N-isopropylacrylamide) Aqueous Solution at a Temperature below Cloud Point. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02292] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Takuro Kogo
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
| | - Atsuomi Shundo
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
- Department of Automotive Science, Kyushu University, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 819-0395, Japan
| | - Chi Wang
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Keiji Tanaka
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
- Department of Automotive Science, Kyushu University, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 819-0395, Japan
- Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka 819-0395, Japan
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Kobayashi K, Oh SH, Yoon C, Gracias DH. Multitemperature Responsive Self-Folding Soft Biomimetic Structures. Macromol Rapid Commun 2017; 39. [PMID: 29250859 DOI: 10.1002/marc.201700692] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 10/23/2017] [Indexed: 12/28/2022]
Abstract
Untethered, millimeter-scale, stimuli-responsive shape change structures are critical to the function of autonomous devices, smart materials, and soft robotics. Temperature in a range compatible with physiological or ambient environmental conditions is an excellent cue to trigger actuation of soft structures for practical biomimetic applications. Previously, a range of thermally responsive self-folding soft structures has been described and utilized in a variety of applications from tissue engineering to minimally invasive surgery. In order to extend these concepts to more complex devices, thermally responsive bilayer structures composed of poly[oligo (ethylene glycol) methyl ether methacrylate] (POEGMA) gels that swell at three different temperatures are described. The lower critical solution temperature and volume transition temperature of POEGMA are tuned by varying the side chain length and the extent of copolymerization. The swelling properties of the POEGMA gels are characterized and a multilayer photopatterning process is described that is used to create soft biomimetic structures that change shape in a sequential manner while displaying multistate behaviors.
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Affiliation(s)
- Kunihiko Kobayashi
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, 21218, USA.,JSR Corporation, 1-9-2, Higashi-Shimbashi, Minato-ku, Tokyo, 105-8640, Japan
| | - Seung Hyun Oh
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, 21218, USA
| | - ChangKyu Yoon
- Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, MD, 21205, USA
| | - David H Gracias
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, 21218, USA.,Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, MD, 21205, USA
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Osváth Z, Iván B. The Dependence of the Cloud Point, Clearing Point, and Hysteresis of Poly(N-isopropylacrylamide) on Experimental Conditions: The Need for Standardization of Thermoresponsive Transition Determinations. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600470] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zsófia Osváth
- Polymer Chemistry Research Group; Institute of Materials and Environmental Chemistry; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Magyar tudósok krt. 2 H-1117 Budapest Hungary
| | - Béla Iván
- Polymer Chemistry Research Group; Institute of Materials and Environmental Chemistry; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Magyar tudósok krt. 2 H-1117 Budapest Hungary
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Watanabe R, Takaseki K, Katsumata M, Matsushita D, Ida D, Osa M. Characterization of poly(N,N-diethylacrylamide) and cloud points in its aqueous solutions. Polym J 2016. [DOI: 10.1038/pj.2015.120] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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6
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Osa M, Itoda Y, Suzuki Y, Yumoto T, Yoshida A. A fluorescence probe study on the effects of surfactants on cloud points in aqueous poly(N-isopropylacrylamide) solutions. Polym J 2014. [DOI: 10.1038/pj.2014.93] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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7
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Takahashi R, Qiu XP, Xue N, Sato T, Terao K, Winnik FM. Self-Association of the Thermosensitive Block Copolymer Poly(2-isopropyl-2-oxazoline)-b-poly(N-isopropylacrylamide) in Water–Methanol Mixtures. Macromolecules 2014. [DOI: 10.1021/ma501538t] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Rintaro Takahashi
- Department
of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka 560-0043, Japan
| | - Xing-Ping Qiu
- Faculty
of Pharmacy and Department of Chemistry, University of Montreal, CP 6128 Succursale Centre Ville Montreal, Quebec Canada H3C 3J7
| | - Na Xue
- Faculty
of Pharmacy and Department of Chemistry, University of Montreal, CP 6128 Succursale Centre Ville Montreal, Quebec Canada H3C 3J7
| | - Takahiro Sato
- Department
of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka 560-0043, Japan
| | - Ken Terao
- Department
of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka 560-0043, Japan
| | - Françoise M. Winnik
- Faculty
of Pharmacy and Department of Chemistry, University of Montreal, CP 6128 Succursale Centre Ville Montreal, Quebec Canada H3C 3J7
- WPI
International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Nayak PK, Hathorne AP, Bermudez H. Critical solution behavior of poly(N-isopropyl acrylamide) in ionic liquid–water mixtures. Phys Chem Chem Phys 2013; 15:1806-9. [DOI: 10.1039/c2cp44205a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Temperature responsive flocculation and solid–liquid separations with charged random copolymers of poly(N-isopropyl acrylamide). J Colloid Interface Sci 2011; 360:61-70. [DOI: 10.1016/j.jcis.2011.04.013] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Revised: 03/31/2011] [Accepted: 04/07/2011] [Indexed: 11/19/2022]
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Ise T, Nagaoka K, Osa M, Yoshizaki T. Cloud points in aqueous solutions of poly(N-isopropylacrylamide) synthesized by aqueous redox polymerization. Polym J 2010. [DOI: 10.1038/pj.2010.121] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Solid–liquid separations with a temperature-responsive polymeric flocculant: Effect of temperature and molecular weight on polymer adsorption and deposition. J Colloid Interface Sci 2010; 348:9-23. [DOI: 10.1016/j.jcis.2010.04.063] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2009] [Revised: 04/16/2010] [Accepted: 04/20/2010] [Indexed: 11/23/2022]
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13
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Burdukova E, Li H, Ishida N, O’Shea JP, Franks GV. Temperature controlled surface hydrophobicity and interaction forces induced by poly (N-isopropylacrylamide). J Colloid Interface Sci 2010; 342:586-92. [DOI: 10.1016/j.jcis.2009.10.049] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2009] [Revised: 10/19/2009] [Accepted: 10/20/2009] [Indexed: 11/30/2022]
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14
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