GAMMA-PHASE IN INJECTION-MOLDED ISOTACTIC POLYPROPYLENE

被引:24
|
作者
KALAY, G
ALLAN, P
BEVIS, MJ
机构
[1] Wolfson Centre for Materials Processing, Department of Materials Technology, Brunel University, Uxbridge
关键词
POLYPROPYLENE; MOLECULAR ORIENTATION; CRYSTALLINITY;
D O I
10.1016/0032-3861(94)90366-2
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Wide angle X-ray diffraction has been used to investigate polymorphism in isotactic polypropylene (IPP) mouldings produced by conventional injection moulding and by shear controlled orientation injection moulding (SCORIM). Gamma Phase was found to form in highly oriented IPP produced by SCORIM, with a marked enhancement of the preferred orientation of the alpha phase and percentage crystallinity when compared with conventionally moulded IPP.
引用
收藏
页码:2480 / 2482
页数:3
相关论文
共 50 条
  • [31] The gamma-phase of high molecular weight isotactic polypropylene .2. The morphology of the gamma-form crystallized at 200 MPa
    Mezghani, K
    Phillips, PJ
    POLYMER, 1997, 38 (23) : 5725 - 5733
  • [32] Mechanical and morphological properties of injection-molded rice husk polypropylene composites
    Aridi, N. A. M.
    Sapuan, S. M.
    Zainudin, E. S.
    AL-Oqla, Faris M.
    INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION, 2016, 21 (04) : 305 - 313
  • [33] SINGLE-CRYSTALS OF GAMMA-PHASE ISOTACTIC POLYPROPYLENE - COMBINED DIFFRACTION AND MORPHOLOGICAL SUPPORT FOR A STRUCTURE WITH NONPARALLEL CHAINS
    LOTZ, B
    GRAFF, S
    STRAUPE, C
    WITTMANN, JC
    POLYMER, 1991, 32 (16) : 2902 - 2910
  • [34] Post-Molding Shrinkage, Structure and Properties of Cellular Injection-Molded Polypropylene
    Kosciuszko, Artur
    Rojewski, Mateusz
    Nowinka, Bartosz
    Patalas, Filip
    MATERIALS, 2022, 15 (20)
  • [35] Essential Work of Fracture Parameters of Injection-Molded Polypropylene/Polyolefin Elastomer Blends
    Huang, Hui-Juan
    Xie, Bang-Hu
    Yang, Wei
    Shen, Yue-Xin
    Yang, Ming-Bo
    JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS, 2010, 49 (02): : 231 - 241
  • [36] Optimizing mechanical properties of injection-molded long fiber-reinforced polypropylene
    Youssef, Al Herz
    Madhuranthakam, Chandra Mouli R.
    Elkamel, Ali
    Mittal, Vikas
    JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS, 2015, 28 (06) : 849 - 862
  • [37] Study of the Molecular Orientation Heterogeneity in Polypropylene Injection-Molded Parts by Raman Spectroscopy
    Martin, J.
    Margueron, S.
    Fontana, M.
    Cochez, M.
    Bourson, P.
    POLYMER ENGINEERING AND SCIENCE, 2010, 50 (01) : 138 - 143
  • [38] Influence of thermal treatment on the elastic modulus of a nano-dispersed elastomer domain in an injection-molded isotactic polypropylene/thermoplastic elastomer binary blend
    Ono, Michio
    Nakajima, Ken
    POLYMER JOURNAL, 2024, 56 (02) : 87 - 96
  • [39] The effect of organoclay on the mechanical properties and morphology of injection-molded polyamide 6/polypropylene nanocomposites
    Chow, WS
    Ishak, ZAM
    Ishiaku, US
    Karger-Kocsis, J
    Apostolov, AA
    JOURNAL OF APPLIED POLYMER SCIENCE, 2004, 91 (01) : 175 - 189
  • [40] Flow mark defects reduction of injection-molded polypropylene by dynamically vulcanized polyolefin elastomer
    Zhu, Guodian
    Li, Zhuoxi
    Shang, Jingqi
    Ding, Jiao
    Li, Yuanyuan
    Yin, Guoqiang
    POLYMER ENGINEERING AND SCIENCE, 2021, 61 (09) : 2276 - 2286