Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (12): 109-117.doi: 10.13475/j.fzxb.20211001709

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Synthesis and properties of cationic modified flame retardant polyester fabrics

ZHANG Chudan1, WANG Rui1,2, WANG Wenqing1,2(), LIU Yanyan1, CHEN Rui1   

  1. 1. School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
    2. Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Institute of Fashion Technology, Beijing 100029, China
  • Received:2021-10-11 Revised:2022-01-04 Online:2022-12-15 Published:2023-01-06
  • Contact: WANG Wenqing E-mail:20180021@bift.edu.cn

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Abstract:

In order to improve the moisture absorption, dyeing and antibacterial properties of flame retardant polyester fabrics, polymer coatings with different molecular weights, including poly (2-(methacryloyloxy)ethyl) dimethyl- (3-sulfopropyl)ammonium hydroxide(PSBMA), poly (2-(methacryloyloxy)ethyl) trimethylammonium chloride solution(PMTAC) and their block copolymer PSBMA-b-PMTAC, were grafted separately on the surface of flame retardant polyethylene terephthalate (FRPET) fabrics via polydopamine mediated surface initiated atom transfer radical polymerization (SI-ATRP) technology. The surface morphology, water absorption, moisture permeability, air permeability, dyeing, bacteriostatic and flame retardant properties of these surface modified FRPET fabrics were characterized and tested to study the changes of flame retardancy, moisture permeability, bacteriostatic and dyeing properties of FRPET after surface modification. The results indicated that the peak heat release rate of block copolymer PSBMA-b-PMTAC modified FRPET fabrics reduced 60.7% comparing to that of FRPET. Compared with pristine FRPET, the modified polyester fabric showed higher water absorption and satisfied the standard of woven hygroscopic products. In addition, the modified fabrics with cationic dyeing possess certain bacteriostatic performance and the bacteriostatic rate of Escherichia coli was increased by 27%.

Key words: flame retardant polyester fabric, surface initiated atom transfer radical polymerization, cationic modification, moisture absorption, bacteriostasis, functional textile

CLC Number: 

  • TQ342

Fig.1

Formation schematic of FRPET-g-PDA-g-PSBMA-b-PMTAC via polydopamine mediated SI-ATRP"

Fig.2

SEM images of different surface modified FRPET samples"

Fig.3

SEM-EDS images of FRPET and its modified samples"

Fig.4

XPS curves of FRPET and its modified samples"

Tab.1

XPS test results of FRPET and its modified samples%"

样品 C O Br N S
FRPET-g-BiBB 74.94 23.26 1.80 - -
FRPET-g-PDA-g-PSBMA 71.24 21.91 0.48 3.81 2.57
FRPET-g-PDA-g-
PSBMA-b-PMTAC		 73.40 21.80 0.19 4.43 0.19

Fig.5

TG curves of FRPET, PDA, PSBMA and PMTAC"

Fig.6

TG curves of samples with different react time"

Tab.2

Grafting ratio of modified samples with different polymerization time%"

样品名称 反应时间/h 接枝率
0.5 2.02
FRPET-g-PDA-g-PSBMA 1 4.37
1.5 4.60
2 4.71
3 1.69
FRPET-g-PDA-g-PMTAC 6 3.08
12 3.57
24 6.03

Fig.7

MCC curves of FRPET and its modified samples. (a) Heat release rate; (b) Total heat release"

Tab.3

GPC results of free polymers"

样品 Mn/(g·mol-1) PDI
PSBMA 14 579 1.38
PMTAC 6 212 1.24
PSBMA-b-PMTAC 69 627 1.89

Tab.4

Moisture adsorption of FRPET and its modified samples"

样品 透气阻抗/
(kPa·s·m-1)		 透湿率/
(g·m-2·d-1)		 吸水
情况		 吸水率/
%		 滴水扩散
时间/s		 芯吸高
度/cm		 水分蒸发速
率/(g·h-1)
FRPET 0.24 6 220.8 缓慢吸水 68.86 21.8 >10 0.37
FRPET-g-PDA-g-
PSBMA-b-PMMTAC		 0.22 5 912.16 瞬时吸水 101.48 3.5 >10 0.32
机织类产品吸湿
快干标准样		 — ≥8 000 — ≥100 ≤5 ≥9 ≥0.18

Fig.8

Image of FRPET and its modified samples after dyeing"

Fig.9

Images of bacteriostat test result"

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