Comparative analysis of two selective bleaching methods on alpaca fibers


Autoria(s): Liu, Xin; Hurren, Christopher J.; Wang, Xungai
Data(s)

01/09/2003

Resumo

Dark brown Alpaca fiber was reduced in shade via selective bleaching with peroxide. Two selective oxidative bleaching methods were tested on alpaca top to assess their effectiveness for color removal and fiber quality properties. Color change, bundle strength, weight loss, fiber diameter, surface modification, dye-ability and dye wash fastness were assessed for both methods and compared with the original brown top. Bleach method 1 (BL-I) showed little surface modification, 5.8 % weight loss and 2.4 % strength loss. D1925 yellowness index was reduced to 74.3 from 83.1 and provided a good base for the dyeing of medium to deep shades. Bleach method 2 (BL-II) displayed considerable surface modification, 7.8 % weight loss and 18 % strength loss. BL-II also resulted in a mean diameter reduction of 1.9 micron during bleaching. Yellow-ness was reduced to 64.5 from 83.1 and provided a very good base for the dyeing of medium to deep shades. BL-I showed better exhaustion of the pre-metallised dye Lanaset Violet B than BL-II. Wash fastness for BL-II was 1 grey scale unit poorer than BL-I. BL-II showed far better color clarity at pale depths however the wash fastness of the finished product was not good enough to maintain the depth or clarity of the color. BL-I showed poorer clarity of color but exhibited better wash fastness results. <br /><br />

Identificador

http://hdl.handle.net/10536/DRO/DU:30002204

Idioma(s)

eng

Publicador

Korean Fiber Society

Relação

http://dro.deakin.edu.au/eserv/DU:30002204/n20030924.pdf

http://dro.deakin.edu.au/eserv/DU:30002204/wang-comparativeanalysisoftwo-2003.pdf

http://dx.doi.org/10.1007/BF02875459

Direitos

Springer

Palavras-Chave #bleaching #dyeing #alpaca fiber #color #yellowness #hydrogen peroxide #fibre science
Tipo

Journal Article