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Study on loss of elastic mechanism of spandex denim in chlorine bleach washing

journal contribution
posted on 2023-02-06, 01:11 authored by L Tian, L Liu, Y C Tang, Jerry GanJerry Gan, Y B Chen, C H Yi
Spandex denim was bleached in chlorine of different pH, and bleaching effect, elastic elongation and elastic recovery rate, IR of spandex were tested. The results show that as pH value was reduced as bleaching rate was more quick, effect was more obvious, but the bleaching effect was not uniform; elastic elongation and elastic recovery rate of spandex denim was shown a downward trend when pH of chlorine water was lower, but when pH was less than 3.98, elastic recovery rate was increased in different degree; C-C in soft segment of PU fractured by chlorine bleach, which is the cause that spandex loss elastic. And three methods which solved loss of spandex denim were investigated.

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Journal

Journal of Tianjin Polytechnic University

Volume

31

Pagination

48 - 51

ISSN

1671-024X

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