Polyvinyl alcohol clay complexes formed by direct synthesis

被引:68
作者
Carrado, KA [1 ]
Thiyagarajan, P [1 ]
Elder, DL [1 ]
机构
[1] ARGONNE NATL LAB,DIV INTENSE PULSED NEUTRON SOURCE,ARGONNE,IL 60439
关键词
clays; direct synthesis; hectorite; hydrothermal crystallization; polymer clays; polyvinyl alcohol; PVA;
D O I
10.1346/CCMN.1996.0440409
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
Synthetic hectorite clay minerals were hydrothermally crystallized with direct incorporation of a series of five water-soluble polyvinyl alcohols (PVA) of molecular weights from 9000-146,000, The molecular weight of PVA had little effect on the success of hydrothermal hectorite synthesis, d-spacing or the amount of polymer incorporated. The basal spacings range from 19.5 Angstrom to 20.8 Angstrom and the amount of polymer incorporated ranges from 20 wt.% to 23 wt.%. incorporation of PVA within the clay interlayers, along with Li(I) ions to compensate the lattice charge, is indicated. Thermal gravimetric analysis and small angle neutron scattering were used to further examine the polymer-clay systems. Small PVA-clay crystallites that are coated with excess PVA are indicated. Removal of the polymer does not alter the extended synthetic clay network, and the nitrogen BET surface area increases from <5 m(2)/g to >200 m(2)/g.
引用
收藏
页码:506 / 514
页数:9
相关论文
共 32 条
  • [1] POLY(ETHYLENE OXIDE)-SILICATE INTERCALATION MATERIALS
    ARANDA, P
    RUIZHITZKY, E
    [J]. CHEMISTRY OF MATERIALS, 1992, 4 (06) : 1395 - 1403
  • [2] CHEMICAL AND STRUCTURAL-PROPERTIES OF CLAY-MINERALS MODIFIED BY INORGANIC AND ORGANIC MATERIAL
    BANDOSZ, TJ
    JAGIELLO, J
    AMANKWAH, KAG
    SCHWARZ, JA
    [J]. CLAY MINERALS, 1992, 27 (04) : 435 - 444
  • [3] INVERSE GAS-CHROMATOGRAPHY STUDY OF MODIFIED SMECTITE SURFACES
    BANDOSZ, TJ
    JAGIELLO, J
    ANDERSEN, B
    SCHWARZ, JA
    [J]. CLAYS AND CLAY MINERALS, 1992, 40 (03) : 306 - 310
  • [4] APPLICATION OF INVERSE GAS-CHROMATOGRAPHY TO THE STUDY OF THE SURFACE-PROPERTIES OF MODIFIED LAYERED MINERALS
    BANDOSZ, TJ
    PUTYERA, K
    JAGIELLO, J
    SCHWARZ, JA
    [J]. MICROPOROUS MATERIALS, 1993, 1 (01): : 73 - 79
  • [5] BARRER RM, 1978, ZEOLITES CLAY MINERA, P430
  • [6] HYDROTHERMAL CRYSTALLIZATION OF PORPHYRIN-CONTAINING LAYER SILICATES
    CARRADO, KA
    THIYAGARAJAN, P
    WINANS, RE
    BOTTO, RE
    [J]. INORGANIC CHEMISTRY, 1991, 30 (04) : 794 - 799
  • [7] INCORPORATION OF PHTHALOCYANINES BY CATIONIC AND ANIONIC CLAYS VIA ION-EXCHANGE AND DIRECT SYNTHESIS
    CARRADO, KA
    FORMAN, JE
    BOTTO, RE
    WINANS, RE
    [J]. CHEMISTRY OF MATERIALS, 1993, 5 (04) : 472 - 478
  • [8] PREPARATION OF HECTORITE CLAYS UTILIZING ORGANIC AND ORGANOMETALLIC COMPLEXES DURING HYDROTHERMAL CRYSTALLIZATION
    CARRADO, KA
    [J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1992, 31 (07) : 1654 - 1659
  • [9] CARRADO KA, 1997, POROUS NETWORKS DERI, P551
  • [10] CARRADO KA, 1995, PREPR PAP AM CHEM SO, V40, P310