Antistatic modification of polyester with carboxyterminated poly(oxyethylene)

Abstract

Carboxy-terminated poly(oxyethy1enes) (PEO-acid) with number-average molecular weights M, = 8400, 3 300, and 1 OOO were used for antielectrostatic modification of poly(ethy1ene terephthalate) (PET). The blend PET fibers containing 2.0 and 5.0 wt.-Vo of PEO-acids were melt-spun at 285 "C with an ordinary extruder and then drawn about 4.5-foM at 80°C. The processabilities of spinning and drawing were excellent at higher molecular weights of PEO-acid. The anti-electrostatic properties of the blend fibers became also improved with increasing molecular weight of PEO-acid. Since little ester interchange reaction took place between PET and PEO-acid during meltspinning, the blend fibers could retain almost the same mechanical properties as the original PET fiber. ZUSAMMENFASSUNG:Carboxy-terminierte Polyoxyethylene (PEO-acid) mit zahlenmittleren Molekulargewichten M, = 8400, 3 300 und 1 OOO wurden zur antielektrostatischen Modifizierung von Polyethylenterephthalat (PET) verwendet. Fasern aus PET-PEO-acid-Blends rnit 2,O oder 5,O Gew.-Vo PEO-acid wurden bei 285 "C rnit einem normalen Extruder aus der Schmelze gesponnen und anschlienend bei 80°C um das ca. 4,5fache verstreckt. Die Verarbeitbarkeit beim Verspinnen und Verstrecken war bei Verwendung von PEOacid rnit hohen Molekulargewichten ausgezeichnet. Die anti-elektrostatischen Eigenschaften wurden ebenfalls rnit steigendem PEO-acid-Molekulargewicht besser. Da eine Umesterung beim Verspinnen nur in geringem Ausmal3 stattfand, blieben die mechanischen Eigenschaften der Blend-Fasern gegeniiber den PET-Fasern nahezu unverandert.

Investigations on Surface-Modified Bulk Polymers. 1. Copolymers of Styrene with a Styrene Moiety Containing a Sugar Monomer

“…The generation of static electricity on polymeric materials causes many problems, both during processing and during practical application, for example, deficiencies of photographic materials, destruction or misfunction of electronic instruments, surface soiling of garments, the clinging of garments to each other and to the body, even dangerous situations such as shock, fire, and explosion hazards owing to high-energy discharge in air. Much effort has been made to improve the antistatic properties of polymers by surface treatment with antistatic agents, dispersing conductive particles, depositing a metallic coating onto the surface, and blending with antistatic modifiers. , One of the easiest methods for antistatic modification of polymeric materials is to incorporate compounds, e.g., poly(ethylene oxide) (PEO) or its derivatives, which are known as host polymers for solid ionic conductors …”

“…Much effort has been made to improve the antistatic properties of polymers by surface treatment with antistatic agents, 28 dispersing conductive particles, 29 depositing a metallic coating onto the surface, 30 and blending with antistatic modifiers. 31,32 One of the easiest methods for antistatic modification of polymeric materials is to incorporate compounds, e.g., poly(ethylene oxide) (PEO) or its derivatives, which are known as host polymers for solid ionic conductors. 33 Poly(vinyl sugar)s may also be used as antistatic materials since the sugar segments are very hydrophilic.…”