Application of polyurethane/citric acid/silicone softener composite on cotton/polyester knitted fabric producing durable soft and smooth surface

Abstract

Application of softeners on fabrics can usually increase the fabric pilling tendency and it is difficult to obtain a soft handle fabric without pilling during wearing. This research was conducted to use various chemicals to reduce pilling with reasonable softness on the cotton/polyester knitted fabric. Diverse composites of the water-based polyurethane resin (PU), citric acid (CA) as a crosslinking agent and silicone-based softener were selected and applied on the fabric through conventional pad-dry-cure method. The characteristics of the treated fabrics including pilling rate, pilling density, water droplet adsorption time, bending length, crease recovery angle, tensile strength, and water contact angle were examined and reported. Application of the polyurethane resin along with citric acid reduced the fabric pilling. However, co-application of resin, CA, and softener improved the fabric crease recovery angle, bending length, and water droplet adsorption time. The preferred formulation was 20 g L À1 CA, 25 g L À1PU resin, and 20 g L À1 silicone softener.

A novel cotton fabric with anti-bacterial and drug delivery properties using SBA-15-NH 2 /polysiloxane hybrid containing tetracycline

“…Also, more softener in a second treatment bath has a considerable effect on the add-on %. Increasing SBA-15-NH 2 -TC and softener in the finishing bath leads to higher SBA-15-NH 2 -TC and softener build up on the fabric surface [28]. However, further examinations revealed that more SBA-15-NH 2 -TC above 2 mg/mL in the treatment bath has no significant influence on add-on %.…”

“…Also, from Table 4, sample S8 showed higher hydrophilicity as a useful factor for garments due to the hydrophilic structure of the siloxane based softener (Table1) [28]. …”

“…Increasing the presence of the hydrophilic groups and micropores leads to improved water absorption and wicking [28]. Thus, the presence of a large number of hydroxyl groups on the…”

“…In order to improve the fabric handle, a silicone-based softener was employed to form cross-linked soft film on the fiber surfaces. Application of silicone softener leads to lower bending length due to the flexibility of the siloxane chain and free rotation along Si-O bonds [28,31]. Therefore, introducing a silicone-based softener to the cotton fabric containing silica particles prevents the hardening effect of the particles and entraps them within the cross-linked formed layer ( Fig.…”

The Preparation and Properties of Fluoroacrylate-Modified Polysiloxane as a Fabric Coating Agent

“…This indicates that the softness of the PFAS-treated fabrics increased compared to the blank. The embedding of long-chain fluoroalkyl does not affect the hand feel of the treated fabric, which is exactly caused by the inherent properties of silicone softeners, which can endow the treated fabrics with very high softness, lubricity, and special tear strength, among other things, partly as a result of a reduction of interfibers and interyarns friction [26,27].…”