Citric acid based durable and sustainable flame retardant treatment for lyocell fabric
- Authors
- Mengal, Naveed; Syed, Uzma; Malik, Samander Ali; Sahito, Iftikhar Ali; Jeong, Sung Hoon
- Issue Date
- Nov-2016
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Flame retardant; Sustainable; Lyocell; Easy care finishes; Cross-linker; Citric acid
- Citation
- CARBOHYDRATE POLYMERS, v.153, pp.78 - 88
- Indexed
- SCIE
SCOPUS
- Journal Title
- CARBOHYDRATE POLYMERS
- Volume
- 153
- Start Page
- 78
- End Page
- 88
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/21434
- DOI
- 10.1016/j.carbpol.2016.07.074
- ISSN
- 0144-8617
- Abstract
- Pyrovatex CP New, is a commonly used organophosphorus based flame retardant (FR) reagent for cellulosic materials. However, it has a drawback of high formaldehyde release when used with methylated melamine (MM) based cross-linker, a known carcinogenous compound. In the present approach, a durable and sustainable flame retarding recipe formulation for lyocell fabrics is developed using citric acid (CA) as a cross-linker. The FR finish was applied by pad-dry-cure process. The treated fabrics were characterized for surface morphology, elemental analysis, TG analysis, char study and FT-IR spectroscopy. Furthermore, flame retardancy, washing durability, formaldehyde release and breaking strength were also assessed, and compared with the conventional MM based FR recipe. The fabric samples treated with 400 g L-1 of FR with either 40 or 80 g L-1 of CA demonstrate flame retardancy even after 10 washing cycles. Furthermore, a 75% reduction in formaldehyde release is achieved. Higher char yield and lower decomposition temperature are found compared to untreated and FR+ MM treated lyocell. Such an improved sustainable recipe formulation can be used for lyocell fabric without any health risk in apparel wear.
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