Surface structure relaxation of poly(methyl methacrylate)

被引：55
|
作者：
Li, Qifeng [1 ]
Hua, Rui [1 ]
Cheah, Ignatius J. [1 ]
Chou, Keng C. [1 ]
机构：
[1] Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2008年 / 112卷 / 03期
关键词：
D O I：
10.1021/jp072147j
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Surface structure relaxations caused by temperature changes at the free surface of poly(methyl methacrylate) were studied using IR-visible sum-frequency generation (SFG). A polarization-rotating technique was introduced to enhance the sensitivity of SFG for monitoring the surface structure relaxations during a cooling process. A new surface structure relaxation was observed at 67 degrees C. This temperature does not match any known structure relaxation temperatures for the bulk and is 40 degrees C below the bulk glass transition temperature. As expected for a free-surface phenomenon, the surface relaxation temperature was found to be independent of film thickness in the range of 0.1-0.5 mu m.
引用
收藏
页码：694 / 697
页数：4
相关论文
共 50 条
  • [1] EFFECT OF RELAXATION TRANSITIONS ON THE STRUCTURE AND PROPERTIES OF POLY(METHYL METHACRYLATE)
    COJ, B
    KARIMOV, SN
    LAVRENTEV, VV
    ACTA POLYMERICA, 1987, 38 (01) : 70 - 74
  • [2] STRUCTURE OF POLY(METHYL METHACRYLATE)
    COIRO, VM
    LIQUORI, AM
    DESANTIS, P
    MAZZARELLA, L
    JOURNAL OF POLYMER SCIENCE PART C-POLYMER LETTERS, 1978, 16 (01) : 33 - 34
  • [3] RELAXATION MECHANISM OF EXCITED ACRIDINE IN METHYL-METHACRYLATE AND POLY(METHYL METHACRYLATE)
    KASAMA, K
    KIKUCHI, K
    UJIIE, K
    YAMAMOTO, SA
    KOKUBUN, H
    JOURNAL OF PHYSICAL CHEMISTRY, 1982, 86 (24): : 4733 - 4737
  • [4] SURFACE MOTIONS OF POLY(METHYL METHACRYLATE)
    LAOHAROJANAPHAND, P
    WANG, R
    STOFFER, JO
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1991, 201 : 43 - PMSE
  • [5] STRUCTURE OF ISOTACTIC POLY(METHYL METHACRYLATE)
    TADOKORO, H
    CHATANI, Y
    KUSANAGI, H
    YOKOYAMA, M
    MACROMOLECULES, 1970, 3 (04) : 441 - &
  • [6] RELAXATION OF DAMPED DEBYE LATTICES - POLY(METHYL METHACRYLATE)
    LIN, KC
    AKLONIS, JJ
    POLYMER ENGINEERING AND SCIENCE, 1981, 21 (11): : 703 - 706
  • [7] Localized fast relaxation in poly(methyl methacrylate) glass
    Mermet, A
    Duval, E
    Surovtsev, NV
    Jal, JF
    Dianoux, AJ
    Yee, AF
    EUROPHYSICS LETTERS, 1997, 38 (07): : 515 - 520
  • [8] Relaxation Behavior of Poly(methyl methacrylate) at a Water Interface
    Fujii, Yoshihisa
    Nagamura, Toshihiko
    Tanaka, Keiji
    JOURNAL OF PHYSICAL CHEMISTRY B, 2010, 114 (10): : 3457 - 3460
  • [9] A PHENOMENOLOGICAL STUDY OF THE STRUCTURAL RELAXATION OF POLY(METHYL METHACRYLATE)
    RIBELLES, JLG
    GREUS, AR
    CALLEJA, RD
    POLYMER, 1990, 31 (02) : 223 - 230
  • [10] DIELECTRIC-RELAXATION AND STRUCTURE OF POLY(METHYL METHACRYLATE) - POLYVINYL-CHLORIDE) MIXTURES
    BUBNOVA, LP
    RAZINSKAYA, IN
    BURSHTEIN, LL
    BORISOVA, TI
    SHTARKMAN, BP
    VYSOKOMOLEKULYARNYE SOEDINENIYA SERIYA A, 1976, 18 (11): : 2535 - 2541
12345