Achieving compatibility in blends of low-density polyethylene/polyamide-6 with addition of ethylene vinyl acetate

Citation
M. Tasdemir et H. Yildirim, Achieving compatibility in blends of low-density polyethylene/polyamide-6 with addition of ethylene vinyl acetate, J APPL POLY, 82(7), 2001, pp. 1748-1754
Citations number
8
Categorie Soggetti
Organic Chemistry/Polymer Science","Material Science & Engineering
Journal title
JOURNAL OF APPLIED POLYMER SCIENCE
ISSN journal
00218995 → ACNP
Volume
82
Issue
7
Year of publication
2001
Pages
1748 - 1754
Database
ISI
SICI code
0021-8995(20011114)82:7<1748:ACIBOL>2.0.ZU;2-Q
Abstract
Polymer alloys and blends, whose major advantage is the potential of achiev ing a range of physical and mechanical properties, have continued to be a s ubject of interest over recent years. Addition of a block or graft copolyme r, with chemically similar segments to those involved in the polymer blend considered, led to a variety of desirable properties. The copolymer added t o the blend functioned to promote a homogeneous dispersion of the constitue nt phases and to enhance their mutual adhesion. Such agents that enable bet ter dispersion in polymer blends are known as compatibilizers. In this stud y an attempt has been made to improve the compatibility in a polymer blend composed of two normally incompatible constituents, LDPE and PA, by additio n of a compatibilizer. The compatibilizer agent, ethylene vinyl acetate (EV A), was added to the polymer blend in ratios of 1, 5, and 10% by using a tw in-screw extruder. The effect of EVA on the crystallization of the polymer constituents was observed through DSC examinations. Furthermore, the contro l sample and all three blends of LDPE/PA(6)/EVA were subjected to examinati ons to obtain their yield and tensile strengths, elasticity modulus, percen tage elongation, izod impact strength, nardness, and melt flow index. (C) 2 001 John Wiley & Sons, Inc.