Influence of the ethylene-(methacrylic acid)-Zn2+ ionomer on the thermal and mechanical properties of blends of poly(propylene) (PP)/ethylene-(vinyl alcohol) copolymer (EVOH)

被引:18
作者
Abad, MJ
Ares, A
Barral, L
Eguiazábal, J
机构
[1] Univ A Coruna, EUP Ferol, Dept Fis, CIT, Ferrol 15405, Spain
[2] Univ A Coruna, Lab Plasticos, CIT, Ferrol 15405, Spain
[3] SA POLIGAL, Polipropileno Galicia, Naron 15570, Spain
[4] UPV, EHU, Dept Ciencias & Tecnol Polimeros, POLYMAT, San Sebastian 20080, Spain
[5] UPV, EHU, Inst Mat Polimericos, POLYMAT, San Sebastian 20080, Spain
关键词
poly(propylene) (PP); blends; extrusion; ionomers; mechanical properties;
D O I
10.1002/pi.1743
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 thermal and mechanical properties and the morphologies of blends of poly(propylene) (PP) and an ethylene-(vinyl alcohol) copolymer (EVOH) and of blends of PP/EVOH/ethylene-(methacrylic acid)-Zn2+ ionomer were studied to establish the influence of the ionomer addition on the compatibilization of PP/EVOH blends and on their properties. The oxygen transmission rate (O2TR) values of the blends were measured as well. PP and EVOH are initially incompatible as was determined by tensile tests and scanning electronic microscopy. Addition of the ionomer Zn2+ led to good compatibility and mechanical behaviour was improved in all blends. The mechanical properties on extruded films were studied for 90/10 and 80/20 w/w PP/EVOH blends compatibilized with 10% of ionomer Zn2+. These experiments have shown that the tensile properties are better than in the injection-moulded samples. The stretching during the extrusion improved the compatibility of the blends, diminishing the size of EVOH domains and enhancing their distribution in the PP matrix. As was to be expected, the EVOH improved the oxygen permeation of the films, even in compatibilized blends. (C) 2004 Society of Chemical Industry.
引用
收藏
页码:673 / 678
页数:6
相关论文
共 21 条
  • [1] Use of a sodium ionomer as a compatibilizer in polypropylene/high-barrier ethylene-vinyl alcohol copolymer blends:: The processability of the blends and their physical properties
    Abad, MJ
    Ares, A
    Barral, L
    Cano, J
    Díez, FJ
    García-Garabal, S
    López, J
    Ramírez, C
    [J]. JOURNAL OF APPLIED POLYMER SCIENCE, 2004, 94 (04) : 1763 - 1770
  • [2] SPHERULITIC GROWTH-RATES AND COALESCENCE PHENOMENA IN POLYPROPYLENE POLYETHYLENE-BASED IONOMER BLENDS
    CALDAS, V
    BROWN, GR
    WILLIS, JM
    [J]. MACROMOLECULES, 1990, 23 (01) : 338 - 345
  • [3] Demarquette NR, 1998, J APPL POLYM SCI, V70, P75, DOI 10.1002/(SICI)1097-4628(19981003)70:1<75::AID-APP9>3.0.CO
  • [4] 2-R
  • [5] Morphology, thermomechanical and barrier properties of polypropylene ethylene vinyl alcohol blends
    Faisant, JB
    Ait-Kadi, A
    Bousmina, M
    Deschenes, L
    [J]. POLYMER, 1998, 39 (03) : 533 - 545
  • [6] Effect of temperature and compatibilizer on interfacial tension of PE/PA-6 and PP/EVOH
    Garmabi, H
    Demarquette, NR
    Kamal, MR
    [J]. INTERNATIONAL POLYMER PROCESSING, 1998, 13 (02) : 183 - 191
  • [7] FRACTURE-MECHANICS INVESTIGATION ON THE PP/EPDM/IONOMER TERNARY BLENDS USING J-INTEGRAL BY LOCUS METHOD
    HA, CS
    KIM, YK
    CHO, WJ
    [J]. JOURNAL OF APPLIED POLYMER SCIENCE, 1994, 51 (08) : 1381 - 1388
  • [8] Kalfoglou NK, 1998, J APPL POLYM SCI, V68, P589, DOI 10.1002/(SICI)1097-4628(19980425)68:4<589::AID-APP10>3.0.CO
  • [9] 2-N
  • [10] THE DEVELOPMENT OF LAMINAR MORPHOLOGY DURING EXTRUSION OF POLYMER BLENDS
    KAMAL, MR
    GARMABI, H
    HOZHABR, S
    ARGHYRIS, L
    [J]. POLYMER ENGINEERING AND SCIENCE, 1995, 35 (01) : 41 - 51