EFFECT OF MULTIWALLED NANOTUBES ON GRAFTING OF TRANS-ETHYLENE-1,2-DICARBOXYLIC ACID ONTO POLYOLEFIN MACROMOLECULES
Abstract
A study was conducted on the effect of multiwalled carbon nanotubes (MWNT) on the course of free-radical grafting of trans-ethylene-1,2-dicarboxylic acid (TEDA) onto linear low-density polyethylene (LLDPE) and ethylene-propylene copolymer (cPP), containing ethylene units ≈ 7 wt%, using the reactive extrusion process. The extrusion reactor was the material cylinder of the twin-screw extruder TSSK-35/40 (screw diameter = 35 mm; L/D = 40; 10 independent heating zones).
It was found that small amounts of MWNT (0.01–0.3 wt%) influence noticeably the monomer grafting onto macromolecules of LLDPE and cPP, as well as the structure, functionalized products’ mechanical properties, strength and high elasticity properties of their melts. The extent of MWNT influence depends on their concentration and PO-structure. It is shown that the monomer’s grafting efficiency can be raised with MWNT ≥ 0.1 wt% inhibit the secondary process of macromolecular cross-linking; in the case of cPP which mostly undergoes degradation during functionalization, the secondary reactions accelerate catalytically.
About the Authors
Yu. M. KRIVOGUZ
Институт механики металлополимерных систем им. В. А. Белого НАН Беларуси, Гомель
Belarus
Belarus
A. V. KRAUKLIS
ЧНПП "Передовые исследования и технологии", Минск
Belarus
Belarus
S. S. PESETSKII
Институт механики металлополимерных систем им. В. А. Белого НАН Беларуси, Гомель
Belarus
Belarus
S. A. ZHDANOK
ЧНПП "Передовые исследования и технологии", Минск
Belarus
Belarus
K. O. BORISEVICH
ЧНПП "Передовые исследования и технологии", Минск
Belarus
Belarus
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