Phase separation of poly(N-isopropylacrylamide) solutions and gels using a near infrared fiber laser

被引：0
|
作者：
DeRosa, Michael E. [1 ]
DeRosa, Rebecca L. [2 ]
Noni, Lisa M. [1 ]
Hendrick, Erin S. [3 ]
机构：
[1] Corning Incorporated, Science and Technology Division, Corning, NY
[2] Inamori School of Engineering, Materials Science and Engineering, Alfred University, Alfred, NY
[3] Department of Textiles and Apparel, Cornell University, Ithaca, NY
来源：
Journal of Applied Polymer Science | 2007年 / 105卷 / 04期
关键词：
We used a tunable near infrared fiber laser in the wavelength range of 1533-1573 nm to induce photo-thermal phase changes in poly(N- isopropylacrylamide) (PNIPAM) aqueous solutions and hydrogels. The laser induces the hydrophilic to hydrophobic transition of the polymer by heating the surrounding water. We report our observations of the phase changes based on using a novel fiber backreflectance method coupled with visual cloud point measurements. At 1533 nm the phase transition was induced at the end of a single mode optical fiber with 9 mW of power at an ambient temperature of 24°C. We found that the power required to reach the lower critical solution temperature was inversely proportional to the absorption spectrum of water. In addition; phase changes in both solutions and gels occurred very rapidly (<1 s) as the laser was turned on and off. © 2007 Wiley Periodicals; Inc;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：2083 / 2090
相关论文
共 50 条
  • [21] Volume phase transition of N-isopropylacrylamide gels in solutions of hydrophobic substances
    Koga, S
    Sasaki, S
    Maeda, H
    STATISTICAL PHYSICS, 2000, 519 : 717 - 719
  • [22] Laser induced phase transition in aqueous solutions of hydrophobically modified poly(N-isopropylacrylamide).
    Hofkens, J
    Hotta, JI
    Sasaki, K
    Masuhara, H
    Faes, H
    DeSchryver, F
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1996, 283 : 165 - +
  • [23] Phase behavior of poly(N-isopropylacrylamide) in binary aqueous solutions
    Costa, ROR
    Freitas, RFS
    POLYMER, 2002, 43 (22) : 5879 - 5885
  • [24] Swelling and deswelling kinetics of poly(N-isopropylacrylamide) gels
    Takahashi, K
    Takigawa, T
    Masuda, T
    JOURNAL OF CHEMICAL PHYSICS, 2004, 120 (06): : 2972 - 2979
  • [25] Attenuated total reflectance/Fourier transform infrared studies on the phase-separation process of aqueous solutions of poly(N-isopropylacrylamide)
    Ramon, O
    Kesselman, E
    Berkovici, R
    Cohen, Y
    Paz, Y
    JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2001, 39 (14) : 1665 - 1677
  • [26] Photon transmission technique to study phase transitions of poly(N-isopropylacrylamide) gels
    Pekcan, Ö
    Kara, S
    INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2004, 18 (12): : 1717 - 1733
  • [27] Volume phase transition in poly(N-isopropylacrylamide) gels in Seawater at high pressures
    Kato, E
    JOURNAL OF APPLIED POLYMER SCIENCE, 2005, 95 (05) : 1069 - 1072
  • [28] Deswelling Kinetics of Poly(N-isopropylacrylamide) Gels at Volume-Phase Transition
    Toshikazu Takigawa
    Toshifumi Yamawaki
    Katsunori Takahashi
    Toshiro Masuda
    Polymer Journal, 1999, 31 : 595 - 598
  • [29] Volume phase transition in poly(N-isopropylacrylamide) gels in seawater at high pressures
    Kato, Eiji
    Journal of Applied Polymer Science, 2005, 95 (05): : 1069 - 1072
  • [30] Saccharide-induced volume phase transition of poly(N-isopropylacrylamide) gels
    Kawasaki, H
    Sasaki, S
    Maeda, H
    Mihara, S
    Tokita, M
    Komai, T
    JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (40): : 16282 - 16284
12345