Polyelectrolyte complex for flame retardant silk

Vest, Natalie A.; Afonso, Andrea O.; Rodriguez‐Melendez, Danixa; Ponis, John D.; Smith, Dallin; Iverson, Ethan T.; Zhang, Zhuoran; Marquez, Jazmine Aiya D.; Banerjee, Sarbajit; Wang, Qingsheng; Grunlan, Jaime C.

doi:10.1016/j.polymdegradstab.2023.110491

Cited by 10 publications

(2 citation statements)

References 45 publications

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“…Fleece samples were submerged in a solution of 3.0% (w/w) PAH and 3.26% PSP, followed by a 100 mM citric acid buffer at pH 3, with bath sonication during both steps to increase solution penetration and minimize fiber bridging 17,21,22 . PEC adsorption on cellulose fibers is entropy‐driven but partially relies on hydrogen bonding and electrostatic interactions between amines, phosphates, and cellulose fibers 23,24 .…”

Section: Resultsmentioning

confidence: 99%

Phosphate and nitrogen‐rich polyelectrolyte complex flame retardant treatment for cotton fleece

Smith,

Cotton,

Vest

et al. 2024

J of Applied Polymer Sci

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The soft nap and deep pile that impart comfort and warmth to cotton fleece also amplify its flammability. Using ambient aqueous processing, an environmentally benign polyelectrolyte complex (PEC), consisting of poly(allylamine hydrochloride) and sodium hexametaphosphate, was deposited on cotton fleece. This treatment adds only 12.5% weight, reduces peak heat release by 68% and total heat release by 74%, and protects from fire via intumescence. Without treatment, fleece burns aggressively with long afterburn and afterglow times, leaving no residue. With the applied PEC, the fabric self‐extinguishes within a few seconds and exhibits no afterglow. In addition, it withstands at least five simulated laundering cycles in alkaline detergent, maintaining a 57% reduction in fire growth capacity afterward. The original soft surface can be restored to the fleece by manual brushing. This simple and environmentally benign treatment provides an opportunity to effectively protect highly flammable textured cellulosic textiles in a safe way.

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Section: Resultsmentioning

confidence: 99%

Phosphate and nitrogen‐rich polyelectrolyte complex flame retardant treatment for cotton fleece

Smith,

Cotton,

Vest

et al. 2024

J of Applied Polymer Sci

Self Cite

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“…Compared with intrinsic ame-retardant treatments, surface treatments are prevailing strategies to impart ame retardancy on fabrics (Battegazzore et al 2020;Hu et al 2023;Zheng et al 2022). Among these surface treatments, it should be noted that polyelectrolyte complex (PEC) coatings, which consisted of oppositely charged polyelectrolytes (Cain et al 2014;Haile et al 2015; Wang et al 2016), could greatly reduce the deposition steps and form more dense layers (Cheng et al 2019;Liu et al 2021a; Vest et al 2023). In the last work of our group, metal doped polyelectrolyte complex has been used to impart ame retardancy to nylon-cotton fabric (He et al 2022), and excellent ame retardancy with LOI value of 26.5% were achieved.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic and anti-fouling polyelectrolyte complex coating for durable flame-retardant cotton fabric

He,

Luo,

Deng

et al. 2024

Cellulose

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Surface treatment is one of the most effective ways to impart ame retardancy to fabrics, woods, etc. Especially, water-soluble polyelectrolyte complex (PEC) coating deposition is one of the most environmentally benign and facile technologies. However, durability, especially washing durability, remains a huge challenge for almost all PEC coated materials. In an effort to keep the desirable ame retardancy of cotton against multiple washing, in this work, per uorodecyltrichlorosilane modi ed polyethylenimine (PEI) was prepared to coat onto the ammonium polyphosphate (APP) based PEC coating. The extra 2 wt% uorinated PEI have not only hardly lost the high LOI value (28.5%) of 10 wt% PEC-coated cotton, but also endowed this coated cotton with high water contact angle of 117 °. And the treated cotton displayed excellent antifouling performance to milk, coffee, honey, cola and ink. Notably, it still preserved self-extinguishing behavior on a vertical ame test, and high LOI value of 26.5%, after vigorously stirring in water at 40°C for 20 times. This facile and e cient method could provide a new strategy for durable ame-retardant cotton fabric against humid and pollutant conditions.

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Preparation of biobased guar gum polyelectrolyte complex coatings by sol‐gel method for improving the flame retardancy of ramie fabrics

Li,

Luo,

Dai

et al. 2024

J of Applied Polymer Sci

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In this study, to improve the flame‐retardant properties of ramie fabrics (RFs), a polyelectrolyte complex (PEC) was prepared in a one‐step process using biobased guar gum (GG), polyethyleneimine (PEI), and ammonium polyphosphate (APP) and deposited on the surface of the RF to construct an intumescent flame‐retardant coating. Fabrics treated with PEC coatings exhibited excellent flame‐retardant properties. Specifically, the cone calorimeter test results revealed that an increase in sample weight of only 13.23 wt% resulted in significant reductions in the peak heat release rate (pHRR), total heat release (THR), and fire growth rate (FGR) of 91.37%, 65.12%, and 95.28%, respectively. Additionally, the limiting oxygen index (LOI) increased from 19.4% to 33.5%, and the fabrics self‐extinguished immediately after the ignition source was removed during the UL‐94 test. Scanning electron microscopy (SEM) of the char residue revealed expansion bubbles on the surface, suggesting that the PEC coating provides flame retardancy through a synergistic effect involving both the gas phase and the condensed phase. This study provides a simple and convenient solution for realizing green and efficient flame‐retardant coatings on RF.

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Polyelectrolyte complex for flame retardant silk

Cited by 10 publications

References 45 publications

Phosphate and nitrogen‐rich polyelectrolyte complex flame retardant treatment for cotton fleece

Phosphate and nitrogen‐rich polyelectrolyte complex flame retardant treatment for cotton fleece

Hydrophobic and anti-fouling polyelectrolyte complex coating for durable flame-retardant cotton fabric

Preparation of biobased guar gum polyelectrolyte complex coatings by sol‐gel method for improving the flame retardancy of ramie fabrics

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