수분산성 copolyester-g-AA/EA의 합성 및 경사호제로서의 응용(ll) copolyester-g-AA/EA의 경사호제로서의 제물성(호제필름의 내수성, 팽윤성, 강신도) 및 호부사의 강신도와 내마모성-

Synthesis and Application of Water-dispersible Copolyester-g-AA/EAss as Warp Sifters(ll) Properties(water-resistance, swellability, and toughness of resin film) of Copolyester-g-AA/EAss and Strength, Elongation & Abrasion Resistance of Yarns Sized with Copolyester-g-AA/EAss

Sizing agents of coplyester-g-AA/EA's were prepared. Film properties of them such as water-resistance, swellability and tensile properties were examimed. With the increase of Ah feed ratio, film became more swellable and hence less was leer-resistant. But water-resistance of copolyester-g-AA/EA's was suntient as the sizing agent for water in loom when the molar feed ratio of AA/EA was controlled between 1/1-0.1. Tensile properties such as strength, elongation and toughness of polymer film were expected to change. Film strength decreased, film elongation increased and eventually film toughness increased. SEM photographs showed the effect of baa polymerization with the tenacious feature in the rupture phase of copolyester-g-AA/EA's compared with those of AA/EA copolymers and copolyester. Tensile properties such as strength, elongation and abrasion resistance of yarns sized with copolyester-g-AA/EA's and a copolyester were examined to confirm the fasibility of commercial usage of copolyester-g-AA/EA's.