Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (07): 97-103.doi: 10.13475/j.fzxb.20210205407

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation and properties of photografted flame-retardant cotton fabrics with modified adenine nucleotide

LI Na1, WANG Xiao1(), LI Zhenbao1, LI Qian2, DU Bing1   

  1. 1. College of Textile and Materials Engineering, Dalian Polytechnic University, Dalian, Liaoning 116034, China
    2. College of Biological Engineering, Dalian Polytechnic University, Dalian, Liaoning 116034, China
  • Received:2021-02-23 Revised:2022-04-13 Online:2022-07-15 Published:2022-07-29
  • Contact: WANG Xiao E-mail:wangxiao@dlpu.edu.cn

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Abstract:

In order to improve the durability of ribonucleic acid (RNA) unit applied to flame-retardant cotton fabrics and to reduce the cost of biological flame retardant treatment, a RNA unit derivative, 5'-adenine nucleotide (AMP), was modified with allyl bromide to prepare biological flame retardant monomer. The AMP monomer and AMP monomer/acrylamide were grafted on pristine cotton fabrics via photografting to prepare flame retardant cotton fabrics with AMP monomer and AMP monomer/acrylamide, respectively. The chemical structure of flame retardant monomer was characterized; the flame retardant properties of pristine cotton fabrics and flame retardant cotton fabrics were measured. The research results show that unsaturated double bonds were successfully introduced into AMP monomer. The decomposition temperature of the two photografted flame-retardant cotton fabrics was lower than that of pristine cotton fabric, and the weight loss of flame-retardant cotton fabrics was reduced. The after-flame time and after-glow time of flame-retardant cotton fabric photografted with AMP monomer/acrylamide were both decreased to 0 s. There is a certain synergistic flame retardant effect between AMP monomer and acrylamide leading to a lower cost.

Key words: adenine nucleotide, acrylamide, photografting, cotton fabric, flame retardancy

CLC Number: 

  • TS195.5

Fig.1

FT-IR spectra of AMP and AMP monomer"

Fig.2

Mass spectra of AMP monomer"

Fig.3

Three substituted reactions of AMP monomers. (a) Monosubstituted reaction; (b) Disubstituted reaction; (c) Trisubstituted reaction"

Tab.1

Effect of illumination time on flame retardant properties"

光照时间/min 质量增加率/% 续燃时间/s 阴燃时间/s
4 3.2 2.2 0
5 3.6 1.2 0
6 3.3 2.1 0
7 3.1 2.8 0

Tab.2

Effect of photoinitiator dosage on flame retardant properties"

TPO质量分数/% 质量增加率/% 续燃时间/s 阴燃时间/s
3 2.9 4.9 0
4 3.0 4.7 0
5 3.6 1.2 0
6 3.2 2.1 0
7 3.1 2.3 0

Fig.4

Surface morphology of cotton fabrics(×2 000). (a) Pristine cotton fabric; (b) Photografted flame retardant cotton fabric with AMP monomer; (c) Photografted flame retardant cotton fabric with AMP monomer/acrylamide"

Fig.5

EDX spectra of photografted flame retardant cotton fabrics with AMP monomer. (a) Photografted flame retardant cotton fabric with AMP monomer; (b) C element; (c)O element; (d) P element; (e) Na element;(f) N element"

Fig.6

TGA curves of cotton fabrics"

Tab.3

TGA data analysis of cotton fabrics"

样品 质量损失率10%
时的分解温度/℃		 最大分解
温度/℃		 质量损
失率/%
纯棉原织物 259.2 333.4 98.5
光接枝AMP单体阻燃棉织物 235.6 296.8 80.6
光接枝AMP单体/丙烯酰胺阻燃棉织物 207.7 298.7 84.0

Fig.7

SEM images of carbon residual of cotton fabrics after burning(×2 000). (a) Carbon residual of pristine cotton fabric; (b) Carbon residual of photografted flame retardant cotton fabric with AMP monomer; (c) Carbon residual of photografted flame retardant cotton fabric with AMP monomer/acrylamide"

Fig.8

Raman spectra of carbon residue of cotton fabrics after burning"

Tab.4

Comparison of flame retardant properties of photografted flame retardant cotton fabrics"

样品 洗涤
时间/min		 质量增
加率/%		 续燃
时间/s		 阴燃
时间/s
纯棉原织物 — — 4.8 41.2
光接枝AMP单体/
丙烯酰胺阻燃棉织物		 — 8.3 0 0
光接枝AMP单体
阻燃棉织物		 — 3.6 1.2 0
10 3.1 2.6 0
20 2.7 3.5 0
30 2.5 3.9 0.3
40 2.4 4.0 0.5

Fig.9

Carbon residue of cotton fabrics after vertical burning. (a) Pristine cotton fabric; (b) Photografted flame retardant cotton fabric with AMP monomer; (c) Photografted flame retardant cotton fabric with AMP monomer/acrylamide"

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