Positron Annihilation Spectroscopy of Polystyrene Filled with Carbon Nanomaterials

被引:18
作者
Awad, Somia [1 ]
Chen, H. M. [1 ]
Grady, Brian P. [3 ,4 ]
Paul, Abhijit [2 ]
Ford, Warren T. [2 ]
Lee, L. James [5 ]
Jean, Y. C. [1 ]
机构
[1] Univ Missouri, Dept Chem, Kansas City, MO 64110 USA
[2] Oklahoma State Univ, Dept Chem, Stillwater, OK 74078 USA
[3] Univ Oklahoma, Carbon Nanotube Technol Ctr CaNTeC, Norman, OK 73019 USA
[4] Univ Oklahoma, Sch Chem Biol & Mat Engn, Norman, OK 73019 USA
[5] Ohio State Univ, Dept Chem & Biomol Engn, Columbus, OH 43210 USA
关键词
FREE-VOLUME; GLASS-TRANSITION; NANOCOMPOSITE MEMBRANES; POLYMER NANOCOMPOSITES; SILICATE NANOCOMPOSITES; TEMPERATURE-DEPENDENCE; GAS-PERMEABILITY; NANOTUBES; LIFETIME; EPOXY;
D O I
10.1021/ma202458c
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Positron annihilation lifetime spectroscopy (PALS) was employed to study the free volume properties of polystyrene (PS) containing three different types of carbon nanoparticles: polystyrene-grafted single wall carbon nanotubes (SWCNTs-g-PS), single wall carbon nanotubes (SWCNTs), and carbon nanofibers (CNFs). The glass transition temperature measured via PALS was significantly lower than that from differential scanning calorimetry (DSC), although qualitatively the two methods agreed in that the T-g measured increased as nanotubes were added to the material. There were some specific differences between the two measurements which may have been related to the fact that DSC does not measure T-g of a portion of the material which is immobilized on the surface of the particle, while PALS measures all polymer, whether immobilized or not. PALS was also used to measure the thermal expansion coefficient and distributions of the free volume of the polystyrene.
引用
收藏
页码:933 / 940
页数:8
相关论文
共 79 条
  • [1] Nanotubes from carbon
    Ajayan, PM
    [J]. CHEMICAL REVIEWS, 1999, 99 (07) : 1787 - 1799
  • [2] Characterization of EVA/clay nanocomposite membranes and its pervaporation performance
    Anilkumar, S.
    Kumaran, M. G.
    Thomas, Sabu
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2008, 112 (13) : 4009 - 4015
  • [3] Free volume behavior in spincast thin film of polystyrene by energy variable positron annihilation lifetime spectroscopy
    Ata, S.
    Muramatsu, M.
    Takeda, J.
    Ohdaira, T.
    Suzuki, R.
    Ito, K.
    Kobayashi, Y.
    Ougizawa, T.
    [J]. POLYMER, 2009, 50 (14) : 3343 - 3346
  • [4] Free Volumes, Glass Transitions, and Cross-Links in Zinc Oxide/Waterborne Polyurethane Nanocomposites
    Awad, Somia
    Chen, Hongmin
    Chen, Guodong
    Gu, Xiaohong
    Lee, James L.
    Abdel-Hady, E. E.
    Jean, Y. C.
    [J]. MACROMOLECULES, 2011, 44 (01) : 29 - 38
  • [5] Layered silicate nanocomposites based on various high-functionality epoxy resins: The influence of cure temperature on morphology, mechanical properties, and free volume
    Becker, O
    Cheng, YB
    Varley, RJ
    Simon, GP
    [J]. MACROMOLECULES, 2003, 36 (05) : 1616 - 1625
  • [6] Macroscopic volume changes versus changes of free volume as determined by positron annihilation spectroscopy for polycarbonate and polystyrene
    Bohlen, J
    Kirchheim, R
    [J]. MACROMOLECULES, 2001, 34 (12) : 4210 - 4215
  • [7] Brandrup J., 1999, Polymer Handbook, VII
  • [8] Positron Annihilation Studies In Polymer Nano-Composites
    Chen, H. M.
    Awad, Somia
    Jean, Y. C.
    Yang, J.
    Lee, L. James
    [J]. APPLICATION OF ACCELERATORS IN RESEARCH AND INDUSTRY: TWENTY-FIRST INTERNATIONAL CONFERENCE, 2011, 1336 : 444 - 447
  • [9] Positron annihilation study in inorganic-polymer nano-composites
    Chen, H. M.
    Jean, Y. C.
    Lee, L. James
    Yang, Jintao
    Huang, James
    [J]. PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 11, 2009, 6 (11): : 2397 - +
  • [10] Free Volumes in Polymer Nanocomposites
    Chen, H. M.
    Lee, L. James
    Yang, Jintao
    Gu, Xiaohong
    Jean, Y. C.
    [J]. POSITRON AND POSITRONIUM CHEMISTRY, 2009, 607 : 177 - +