DYNAMICS OF α AND α' RELAXATION IN LAYERED SILICATE/POLYSTYRENE NANOCOMPOSITES STUDIED BY ANELASTIC SPECTROSCOPY

被引：0
|
作者：
Shu-ying Shang [1 ,2 ]
Zheng-ping Fang [1 ,3 ]
机构：
[1] Institute of Polymer Composites, Zhejiang University
[2] College of Physics & Information Engineering, Henan Normal University
[3] Laboratory of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University
来源：
Chinese Journal of Polymer Science | 2013年 / 10期
关键词：
Dynamics; Glass transiton; Liquid-liquid transition; Composites; Confinement;
D O I：
暂无
中图分类号：
TB383.1 [];
学科分类号：
070205 ; 080501 ; 1406 ;
摘要：
The dynamics of polymer chains in layered silicate/polystyrene nanocomposites was studied by anelastic spectroscopy. Two thermal activated peaks( and peaks) appeared when the specimens were heated to a high temperature and they were related to glass transition and liquid-liquid transition, respectively. The activation energy was calculated based on Arrhenius equation and it showed that the activation energy of glass transition(Eg) is much higher than that of liquid-liquid transition(Ell). Furthermore, the most interesting result for the activation energy was that there were two contrary trends for Eg and Ell, Eg decreased and Ell increased with the addition of clay platelets. The fragile parameter was analyzed and the variation of fragile parameters for the two transitions was also contrary to each other with the addition of clay platelets. All the results indicated that the confinement effect of clay platelets on the dynamics of polymer chain was scale dependent, and perhaps, the two transitions were produced by different mechanisms.
引用
收藏
页码：1334 / 1342
页数：9
相关论文
共 50 条
  • [1] Dynamics of α and α′ relaxation in layered silicate/polystyrene nanocomposites studied by anelastic spectroscopy
    Shu-ying Shang
    Zheng-ping Fang
    Chinese Journal of Polymer Science, 2013, 31 : 1334 - 1342
  • [2] Dynamics of α and α' relaxation in layered silicate/polystyrene nanocomposites studied by anelastic spectroscopy
    Shang, Shu-ying
    Fang, Zheng-ping
    CHINESE JOURNAL OF POLYMER SCIENCE, 2013, 31 (10) : 1334 - 1342
  • [3] Molecular Dynamics of Natural Rubber/Layered Silicate Nanocomposites As Studied by Dielectric Relaxation Spectroscopy
    Hernandez, Marianella
    Carretero-Gonzalez, Javier
    Verdejo, Raquel
    Ezquerra, Tiberio A.
    Lopez-Manchado, Miguel A.
    MACROMOLECULES, 2010, 43 (02) : 643 - 651
  • [4] Dynamics in polymer-silicate nanocomposites as studied by dielectric relaxation spectroscopy and dynamic mechanical spectroscopy
    Mijovic, J
    Lee, HK
    Kenny, J
    Mays, J
    MACROMOLECULES, 2006, 39 (06) : 2172 - 2182
  • [5] Confinement of C60 nanoparticles on the dynamics of polystyrene studied by anelastic spectroscopy and rheometrics
    Fang, Zhengping
    Shang, Shuying
    Wang, Hao
    FOURTH INTERNATIONAL CONFERENCE ON SMART MATERIALS AND NANOTECHNOLOGY IN ENGINEERING, 2013, 8793
  • [6] Relaxation phenomena in rubber/layered silicate nanocomposites
    Psarras, G. C.
    Gatos, K. G.
    Karahaliou, P. K.
    Georga, S. N.
    Krontiras, C. A.
    Karger-Kocsis, J.
    EXPRESS POLYMER LETTERS, 2007, 1 (12): : 837 - 845
  • [7] Structure and Thermal Stability of Polystyrene/Layered Silicate Nanocomposites
    Giannakas, A.
    Spanos, C. G.
    Kourkoumelis, N.
    Vaimakis, T.
    Ladavos, A.
    COMPOSITE INTERFACES, 2009, 16 (2-3) : 237 - 247
  • [8] Dynamics of the nanophase separation in manganites studied by anelastic spectroscopy
    Castellano, C
    Cordero, F
    Cantelli, R
    Ferretti, M
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2003, 262 (01) : 154 - 157
  • [9] Dynamics of liposomes gene vectors studied by anelastic spectroscopy
    Castellano, C
    Pozzi, D
    Caracciolo, G
    Cantelli, R
    APPLIED PHYSICS LETTERS, 2003, 83 (13) : 2701 - 2703
  • [10] Enthalpy relaxation of layered silicate-epoxy nanocomposites
    Lu, HB
    Nutt, S
    MACROMOLECULAR CHEMISTRY AND PHYSICS, 2003, 204 (15) : 1832 - 1841
12345