Study of compatibility between laminar structure and barrier
properties of polyethylene/modified polyamide blends
Tao Jianga,* Fei Dengb, Jen-taut Yehb,
Zhi-qiang Fana
aDepartment of Polymer Science and Engineering,
bCollege of Chemistry and Material Science,
Abstract:
Two types of compatibilizer
precursors (CPs), Zinc-neutralized ethylene/acrylic
copolymer (CPa) and
non-neutralized ethylene/acrylic copolymer (CPb), were
selected to modify polyamide 6 (PA6). The convenient homogenous blends were
prepared to study the compatibility of CPs by dynamic
mechanical thermal analysis (DMTA) and atomic force microscope (AFM). The
results show that CPa is
more compatible than CPb. Bottles were prepared by a laminar-blend
blow-molding process; and the bottles blow-molded from a series of high density
polyethylene (HDPE) / MPAa samples exhibited better
barrier properties. This is because the MPAa is more
compatible with HDPE than MPAb with. Further
morphology analysis demonstrated that HDPE/MPAa
systems are easier to form a multi-layer structure.
Key Words: Polyamide6; compatibility; laminar morphology; barrier property
* Correspondence to: Tao Jiang
E-Mail: jiangtao@hubu.edu.cn Fax: 86-27-50865340 Tel: 86-27-50865286
Address: Chemistry and Material Science Faculty,