MODULATED DIFFERENTIAL SCANNING CALORIMETRY .1. A STUDY OF THE GLASS-TRANSITION BEHAVIOR OF BLENDS OF POLY(METHYL METHACRYLATE) AND POLY(STYRENE-CO-ACRYLONITRILE)

被引：76
作者：
SONG, M
HAMMICHE, A
POLLOCK, HM
HOURSTON, DJ
READING, M
机构：
[1] LOUGHBOROUGH UNIV TECHNOL,INST POLYMER TECHNOL & MAT ENGN,LOUGHBOROUGH LE11 3TU,LEICS,ENGLAND
[2] UNIV LANCASTER,SCH PHYS & CHEM,LANCASTER,ENGLAND
[3] ICI PAINTS,SLOUGH,BERKS,ENGLAND
来源：
POLYMER | 1995年 / 36卷 / 17期
关键词：
POLYMER BLENDS; GLASS TRANSITION; MODULATED DSC;
D O I：
10.1016/0032-3861(95)99430-3
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The glass transition and the effect of specific interactions on this transition process in a binary polymer blend of poly(methyl methacrylate) (PMMA) and poly(styrene-co-acrylonitrile) (SAN), which have very similar glass transition temperatures, have been investigated by means of modulated differential scanning calorimetry. The blends investigated were miscible blends of PMMA and SAN and a physical mixture of the two constituent polymers. Using the differential of heat capacity versus temperature signal, the technique has been shown to be able to resolve the two glass transitions so long as their difference is not less than about 5 degrees C. The value of heat capacity of the miscible blend does not satisfy simple linear addition of the heat capacities of the two component polymers over the glass transition region. It is believed that this enhancement of heat capacity in the glass transition region results from specific interactions between segments of the two polymers.
引用
收藏
页码：3313 / 3316
页数：4
相关论文
共 11 条
  • [1] CHOW TS, 1992, ADV POLYM SCI, V103, P149
  • [2] ENTHALPY AND HEAT-CAPACITY STANDARD REFERENCE MATERIAL - SYNTHETIC SAPPHIRE (ALPHA-AL2O3) FROM 10 TO 2250 K
    DITMARS, DA
    ISHIHARA, S
    CHANG, SS
    BERNSTEIN, G
    WEST, ED
    [J]. JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, 1982, 87 (02): : 159 - 163
  • [3] Donth E. J., 1992, RELAXATION THERMODYN
  • [4] HSU SL, 1984, ADV CHEM SER, V206, P101
  • [5] LI W, 1994, POLYMER, V35, P3261
  • [6] DEFORMATION STUDIES OF POLYSTYRENE POLYVINYL METHYL-ETHER) BLENDS BY MECHANICAL-VIBRATIONAL SPECTROSCOPY
    LU, FJ
    BURCHELL, DJ
    LI, X
    HSU, SL
    [J]. POLYMER ENGINEERING AND SCIENCE, 1983, 23 (16) : 861 - 868
  • [7] Olabisi O., 1979, POLYM POLYM MISCIBIL
  • [8] Paul D. R., 1978, POLYM BLENDS
  • [9] READING M, 1993, TRENDS POLYM SCI, V8, P248
  • [10] READING M, 1993, Patent No. 5224775
12