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⵵/ȣ 1998 / ȣ: V.10,no.2,Apr
1() Tank/liquor-flow Ŀ ׸ Ư
2(Ÿ) Properties of Alkali Hydrolyzed Polyester Fabric by Tank/Liquor-flow Method
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ʷ In this study, PET fabric was hydrolyzed with NaOH using the Tank m/c and Liquor-flow m/c to determine the alkali hydrolysis properties of PET fabrics. The results were as follows The weft density and tensile strength of PET fabrics hydrolyzed with Liquor-flow m/c were higher than those hydrolyzed with Tank m/c in case of less than 10 of weight loss. However, above 10 of weight loss, reverse phenomenon was showed. K/S value of hydrolyzed PET with Liquor-flow m/c was higher than that with Tank m/c above 10 of weight loss. It was observed that the micropores of PET surface were collapsed due to physical force(abrasion and collision) during hydrolysis. Bending rigidity of hydrolyzed PET fabric was about 32 and 40 of bending rigidity of warp and weft direction of untreated fabric at 7 of weight loss, respectively. Above 7 of weight loss, decrease rate was decreased.
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