Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (08): 113-118.doi: 10.13475/j.fzxb.20210805106

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Strain sensing property and respiration monitoring of polyaniline-coated warp-knitted fabrics

WANG Chenlu1, MA Jinxing2, YANG Yaqing1, HAN Xiao1, HONG Jianhan1,3,4(), ZHAN Haihua1,3,4, YANG Shiqian1, YAO Shaofang1, LIU Jiangqiaona1   

  1. 1. College of Textile and Garment, Shaoxing University, Shaoxing, Zhejiang 312000, China
    2. Shaoxing Shuixiang Textile Technology Co., Ltd., Shaoxing, Zhejiang 312030, China
    3. Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province, Shaoxing, Zhejiang 312000, China
    4. Shaoxing Sub-center of National Engineering Research Center for Fiber-based Composites, Shaoxing, Zhejiang 312000, China
  • Received:2021-08-11 Revised:2022-02-22 Online:2022-08-15 Published:2022-08-24
  • Contact: HONG Jianhan E-mail:jhhong@usx.edu.cn

RichHTML

17

PDF (PC)

100

Abstract:

For preparation of knitted flexible sensor for respiratory monitoring in smart clothing, a two-bar tricot polyester warp-knitted fabric was pretreated by plasma followed by in-situ polymerization treatment for conductivity. The structure, electrical conductivity and strain-resistance sensing property of conductive warp-knitted fabric was investigated, and its application in respiratory monitoring smart underwear was also discussed. The results show that conductive treatment of in-situ polymerization gives the polyester warp-knitted fabric good electrical conductivity, and the resistivity of the fabric is about 11 orders of magnitude lower than that of the untreated. The resistance of conductive warp-knitted fabric decreases during stretching and recovers when shrinking, which shows good strain-resistance sensing characteristics. After a long time of reciprocating stretching, the resistance changes of the conductive warp-knitted fabric remain stable, and the gauge factors are about 6 and 4 at 6％ and 10％ strain conditions, respectively. The conductive warp-knitted fabric sensor demonstrates good ability to monitor human respiration, which can not only record the occurrence, but also monitor the rate and intensity of respiration.

Key words: smart clothing, warp-knitted fabric, strain sensor, polyaniline, respiration monitoring

CLC Number: 

  • TS181.8

Fig.1

Test device for strain-resistance of conductive warp-knitted fabric"

Fig.2

Respiration monitoring experiment. (a)Expiration; (b) Inspiration"

Fig.3

SEM images of pretreated warp-knitted fabric(a) and conductive warp-knitted fabric(b) (×1 000)"

Fig.4

FT-IR spectra of pretreated warp-knitted fabric and conductive warp\|knitted fabric"

Tab.1

Conductivity of conductive warp-knitted fabric"

测试次数 电阻/104 Ω 电阻率/(102 Ω·cm)
1 0.239 0.574
2 0.234 0.562
3 0.245 0.588
平均值 0.239 0.574

Fig.5

Resistance changes of conductive warp-knitted fabric under different strain"

Tab.2

Linear fitting equations"

应变/％ 拟合方程 相关系数r
6 y = –0.162 9x + 1.044 0.975
10 y = –0.184 1x + 1.003 1 0.966

Fig.6

Coil structure (a)and resistance network model (b) of two bar tricot fabric"

Fig.7

Repeatability of strain-resistance sensing ofconductive warp-knitted fabric"

Fig.8

Resistance variation of sensor during breathing under different state of motion"

Tab.3

Data of respiration monitoring"

状态 R/R0最大值与最小值的差值 呼吸间隔时间/s
睡眠 0.014 3.01
静坐 0.035 2.84
跑步(5 min) 0.140 3.97
[1] CHEN M, MA Y J, LI Y, at al. Wearable 2.0: enabling human-cloud integration in next generation healthcare systems[J]. IEEE Communication Magazine, 2017, 55:54-61.
[2] 方剑, 任松, 张传雄, 等. 智能可穿戴纺织品用电活性纤维材料[J]. 纺织学报, 2021, 42(9):1-9.
FANG Jian, REN Song, ZHANG Chuanxiong, et al. electroactive fibrous materials for intelligent wearable textiles[J]. Journal of Textile Research, 2021, 42(9):1-9.
doi: 10.1177/004051757204200101
[3] 王金凤, 龙海如. 线圈转移对导电弹性针织柔性传感器的电-力学性能影响[J]. 纺织学报, 2013, 34(7):62-68.
WANG Jinfeng, LONG Hairu. Effect of loop transfer on electro-mechanical properties of conductive elastic wearable knitted sensors[J]. Journal of Textile Research, 2013, 34(7):62-68.
[4] 王金凤. 导电针织柔性传感器的电-力学性能及内衣压力测试研究[D]. 上海: 东华大学, 2013:65.
WANG Jinfeng. Research on electro-michanical properties of conductive knitted flexible sensors and measurement of underwear pressure[D]. Shanghai: Donghua University, 2013:65.
[5] 蔡倩文, 王金凤, 陈慰来. 纬编针织柔性传感器结构及其导电性能[J]. 纺织学报, 2016, 37(6):48-53.
CAI Qianwen, WANG Jinfeng, CHEN Weilai. Structures and electrical properties of weft-knitted flexible sensors[J]. Journal of Textile Research, 2016, 37(6):48-53.
[6] HONG J H, PAN Z J, WANG Z, et al. A large-strain weft-knitted sensor fabricated by conductive UHMWPE/PANI composite yarns[J]. Sensors and Actuators A: Physical, 2016, 238(2):307-316.
doi: 10.1016/j.sna.2015.12.028
[7] 洪剑寒, 潘志娟, 姚穆. UHMWPE/PANI导电针织物的应变传感性能[J]. 纺织学报, 2016, 37(2):77-83.
HONG Jianhan, PAN Zhijuan, YAO Mu. Strain sensing property of knitted fabric of conductive ultrahigh molecular weight polyethylene/polyaniline composite yarn[J]. Journal of Textile Research, 2016, 37(2):77-83.
[8] ZHOU X R, HU C Y, LIN X C, et al Polyaniline-coated cotton knitted fabric for body motion moni-toring[J]. Sensors and Actuators A: Physical, 2021, 321(4):1-11.
[9] 张舒, 缪旭红, RAJI Rafiu King, 等. 经编导电针织物的应变-电阻传感性能[J]. 纺织学报, 2018, 39(2):73-77.
ZHANG Shu, MIAO Xuhong, RAJI Rafiu King, et al. Strain-resistance property of warp knitted conductive fabric[J]. Journal of Textile Research, 2018, 39(2):73-77.
[10] XU R, WANG W, SUN J Y, et al. A flexible, conductive and simple pressure sensor prepared by electroless silver plated polyester fabric[J]. Colloids and Surfaces A, 2019, 578:123554-123563.
doi: 10.1016/j.colsurfa.2019.04.096
[11] GURARSLAN A, ÖZDEMIR B, BAYAT I H, et al. Silver nanowire coated knitted wool fabrics for wearable electronic applications[J]. Journal of Engineered Fibers and Fabrics, 2019, 14:1-8.
[12] GAO C X, HE S S, QIU L B, et al. Continuous dry-wet spinning of white, stretchable, and conductive fibers of poly(3-hydroxybutyrate-co-4-hydroxybutyrate) and ATO@TiO2 nanoparticles for wearable e-textiles[J]. Journal of Materials Chemistry C, 2020, 8:8362-8367.
doi: 10.1039/D0TC01310B
[13] DALUZ F S, GARCIA F D. Graphene-incorporated natural fiber polymer composites: a first overview[J]. Polymers, 2020, 12:1601-1636.
doi: 10.3390/polym12071601
[14] ZHOU J, ZHAO Z Y, HU R M, et al. Multi-walled carbon nanotubes functionalized silk fabrics for mechanical sensors and heating materials[J]. Materials & Design, 2020, 191:1-9.
[15] SILVA D O, BATISTELLA M A, GUELLI U S, et al. Development of flexible sensors using knit fabrics with conductive polyaniline coating and graphite elec-trodes[J]. Journal of Applied Polymer Science, 2017, 134:1-11.
[16] RAGNAR H, ELSE H, WILLIAMSON J B. Electric contacts theory and application[M]. New York: Springer-Verlag Berlin and Heidelberg GmbH & Co., 2010:8-9.
[1] GUO Zijiao, LI Yue, ZHANG Rui, LU Zan. Preparation and properties of polyaniline/Ti3C2Tx/carbon nanotube composite fiber-based electrodes [J]. Journal of Textile Research, 2022, 43(02): 74-80.
[2] LIU Suo, WU Dingsheng, LI Man, ZHAO Lingling, FENG Quan. Preparation of spunlaced viscose/polyaniline composite fiber membrane and its adsorption performance [J]. Journal of Textile Research, 2021, 42(08): 122-127.
[3] JIN Peng, XUE Zhebin, JIANG Runtian, LIU Danyu, ZHANG Chi. Design of smart protective clothing for blind people [J]. Journal of Textile Research, 2021, 42(08): 135-143.
[4] YAN Tao, PAN Zhijuan. Strain sensing performance for thin and aligned carbon nanofiber membrane [J]. Journal of Textile Research, 2021, 42(07): 62-68.
[5] LI Yifei, ZHENG Min, CHANGZHU Ningzi, LI Liyan, CAO Yuanming, ZHAI Wangyi. Cotton knitted fabrics treated with two-dimensional transitional metal carbide Ti3C2Tx and property analysis [J]. Journal of Textile Research, 2021, 42(06): 120-127.
[6] TANG Jian, YAN Tao, PAN Zhijuan. Research progress of flexible strain sensors based on conductive composite fibers [J]. Journal of Textile Research, 2021, 42(05): 168-177.
[7] ZHOU Xinru, ZHOU Xiaoya, MA Yongjian, HU Chengye, ZHAO Xiaoman, HONG Jianhan, HAN Xiao. Preparation and pressure sensitivity of conductive polyaniline/polyurethane foam [J]. Journal of Textile Research, 2021, 42(04): 62-68.
[8] WANG Yuting, LING Zhongwen, YANG Xin, LIU Yuqing. Preparation of nano-tungsten oxide composite cotton fiber and its photochromic properties [J]. Journal of Textile Research, 2021, 42(02): 21-26.
[9] WANG Bo, FAN Lihua, YUAN Yun, YIN Yunjie, WANG Chaoxia. Preparation and electric storage performance of stretchable polypyrrole/cotton knitted fabric [J]. Journal of Textile Research, 2020, 41(10): 101-106.
[10] HU Chengye, MIAO Runwu, HAN Xiao, HONG Jianhan, GIL Ignacio. Effect of polyvinyl alcohol on durability of polyaniline conductive layer on poly(p-phenylene terephthamide) yarn surface [J]. Journal of Textile Research, 2020, 41(04): 91-97.
[11] WU Yingxin, HU Chengye, ZHOU Xiaoya, HAN Xiao, HONG Jianhan, GIL Ignacio. Strain sensing property of flexible wearable spandex/polyaniline/polyurethane composites [J]. Journal of Textile Research, 2020, 41(04): 21-25.
[12] WU Ronghui, MA Liyun, ZHANG Yifan, LIU Xiangyang, YU Weidong. Strain sensor based on silver nanowires coated yarn with chain stitch structure [J]. Journal of Textile Research, 2019, 40(12): 45-49.
[13] ZOU Lihua, XU Zhenzhen, SUN Yanyan, WANG Tairan, QIU Yiping. Influence of graphene oxide/polyaniline functional film on electromagnetic shielding property of cotton fabrics [J]. Journal of Textile Research, 2019, 40(08): 109-116.
[14] MIAO Runwu, JIN Lihua, WEI Qiyu, HAN Xiao, HONG Jianhan. Preparation and electromagnetic shielding property of conductive poly(p-phenylene terephamide) of reinforced composite materials [J]. Journal of Textile Research, 2019, 40(02): 100-104.
[15] . Conductivity of polyaniline / chitosan / wool composite fabrics and molecular simulation for aniline adsorption [J]. Journal of Textile Research, 2018, 39(12): 95-100.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
京ICP备14006648号
Copyright 2021 © Editorial office of Journal of Textile Research
Supported by Beijing Magtech Co.Ltd