HIGH-MODULUS POLYETHYLENE FIBER STRUCTURE AS SHOWN BY X-RAY-DIFFRACTION

被引:69
|
作者
GRUBB, DT
PRASAD, K
机构
[1] Department of Materials Science and Engineering, Cornell University, Ithaca
关键词
D O I
10.1021/ma00044a018
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
High-quality X-ray diffraction patterns were obtained from small bundles and single fibers of Polyethylene at both small and wide angles using a synchrotron X-ray source. The equatorial streak in small angle (SAXS) can be used to give the length, width, and misorientation of the scattering objects, while the shape of wide-angle spots gives the same information about the crystals. The SAXS objects are 150-200 nm long, longer than the crystal length. This is in accord with microfibril models where the crystals are not continuous. The fibril interfaces are significantly less well oriented than the crystals within them. This seems anomalous, but the misorientation could correspond to tapered or irregular fibrils. The crystals are 15-30 nm across, but in some samples the fibrils are apparently only 6 nm across on average. The widths could really be the same if the fibril size distribution is broad or if fibril volume fraction has been underestimated. The method of analyzing the SAXS equatorial streak can be applied to any reasonably well oriented fiber that has a fibrillar structure.
引用
收藏
页码:4575 / 4582
页数:8
相关论文
共 50 条
  • [1] X-RAY-DIFFRACTION FROM HIGH MODULUS FIBERS - ORIENTATION AND STRUCTURE
    GRUBB, DT
    [J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1992, 203 : 244 - POLY
  • [2] CALCULATION OF THE X-RAY-DIFFRACTION ON THE STRUCTURE OF HIGH-ORIENTED POLYETHYLENE
    CHVALUN, SN
    [J]. VYSOKOMOLEKULYARNYE SOEDINENIYA SERIYA A, 1991, 33 (03): : 508 - 515
  • [3] X-RAY-DIFFRACTION RELAXATION OF POLYETHYLENE
    ODA, T
    STEIN, RS
    [J]. JOURNAL OF POLYMER SCIENCE PART A-2-POLYMER PHYSICS, 1972, 10 (04) : 685 - &
  • [4] ELASTIC-MODULUS OF POLYETHYLENE IN THE CRYSTAL CHAIN DIRECTION AS MEASURED BY X-RAY-DIFFRACTION
    MATSUO, M
    SAWATARI, C
    [J]. MACROMOLECULES, 1986, 19 (07) : 2036 - 2040
  • [5] SURFACE-MORPHOLOGY AND NANOSTRUCTURE OF HIGH-MODULUS POLYETHYLENE FIBER
    WAWKUSCHEWSKI, A
    CANTOW, HJ
    MAGONOV, SN
    [J]. POLYMER BULLETIN, 1994, 32 (02) : 235 - 240
  • [6] X-RAY-DIFFRACTION STUDY OF REORIENTATION OF POLYETHYLENE
    GENIN, YV
    GERASIMOV, VI
    GINZBURG, BM
    SULTANOV, N
    TSVANKIN, DY
    [J]. VYSOKOMOLEKULYARNYE SOEDINENIYA SERIYA A, 1973, 15 (01): : 85 - 90
  • [7] DYNAMIC X-RAY-DIFFRACTION STUDIES OF HIGH-DENSITY POLYETHYLENE
    CEMBROLA, RJ
    KYU, T
    SUEHIRO, S
    KAWAI, H
    STEIN, RS
    [J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1983, 21 (03) : 329 - 352
  • [8] ACHIEVEMENT OF HIGH-MODULUS POLYETHYLENE FIBERS AND THE MODULUS OF POLYETHYLENE CRYSTALS
    BARHAM, PJ
    KELLER, A
    [J]. JOURNAL OF POLYMER SCIENCE PART C-POLYMER LETTERS, 1979, 17 (09) : 591 - 593
  • [9] X-RAY-DIFFRACTION BY A NEMATIC POLYBENZOTHIAZOLE FIBER
    ADAMS, WW
    AZAROFF, LV
    KULSHRESHTHA, AK
    [J]. ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 1979, 150 (1-4): : 321 - 326
  • [10] X-RAY-DIFFRACTION LINESHAPE ANALYSIS OF MODEL POLYETHYLENE
    WISSLER, G
    CRIST, B
    [J]. BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1981, 26 (03): : 363 - 363