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The colour properties of polyester/cotton knitted fabrics coated with poly(N‐vinyl‐2‐pyrrolidone)
Author(s) -
Vieira Giovana A.,
Pereira André Cadore,
Immich Ana Paula Serafini,
Souza Antônio Augusto Ulson,
Barcellos Ivonete Oliveira
Publication year - 2019
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/cote.12375
Subject(s) - dyeing , polyester , materials science , composite material , textile , coating
The objective of this research was to investigate the use of crosslinked poly(N‐vinyl‐2‐pyrrolidone) ( PVP ) to coat polyester/cotton knitted fabric, without adversely affecting its dyeing properties. Before dyeing, the knitted fabrics were tested for bursting strength to assess the influence of the coating on their resistance. The dyeing parameters were evaluated as the exhaustion (%), K/S value, colour difference (Δ E ), relative strength ( RS %) and colour fastness to washing. Bursting strengths were 9.4 for coated and 9.7 kgf cm −2 for uncoated knitted fabric samples, confirming an insignificant loss in resistance. In the evaluation of K/S , Δ E and RS %, the values for the samples with the highest concentration of PVP were the most different to those for the standard sample. The colour fastness showed satisfactory results indicating that neutralisation and washing after dyeing were effective. These results could lead to increased quality in the textile industry, adding value to products.