AgNW Treated PU Nanofiber/PDMS Composites as Wearable Strain Sensors for Joint Flexion Monitoring

Sujin Cha; Inhwan Kim; Eugene Lee; Eunji Jang; Gilsoo Cho

doi:10.1007/s12221-020-0018-2

AgNW Treated PU Nanofiber/PDMS Composites as Wearable Strain Sensors for Joint Flexion Monitoring

Sujin Cha, Inhwan Kim, Eugene Lee, Eunji Jang, Gilsoo Cho

Department of Clothing and Textiles

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, wearable polyurethane (PU) nanofiber-based silver nanowires (AgNWs)/polydimethylsiloxane (PDMS) composites were fabricated and demonstrated as strain sensors to monitor human arm joint movements, investigating electrical resistance change with deformation. With varying content of AgNWs (0.5 wt%, 0.75 wt%, and 1 wt%) in ethanol, PU nanofiber nonwovens were coated with the AgNWs followed by packaging and encapsulation process with commercial snap buttons and PDMS coating. Each sample’s surface morphology was characterized by scanning electron microscopy (SEM). After the curing process at 50 °C for 2 hours, the fabricated sensors were integrated to textile-arm sleeves for the wear-trials with a dummy and three human subjects. Given that the resistance of the sensors were the lowest when treated with 1 wt% of AgNWs, the sensors initially showed increase in resistance according to bending motion while the excessive bending resulted in decreasing trend in resistance. Regarding the varying joint flexion speed (0.125–0.5 Hz), sensors with 1 wt% of AgNWs showed the best performance as wearable strain sensors with more accurate signals and stability even under higher frequency.

Original language	English
Pages (from-to)	2479-2484
Number of pages	6
Journal	Fibers and Polymers
Volume	21
Issue number	11
DOIs	https://doi.org/10.1007/s12221-020-0018-2
Publication status	Published - 2020 Nov

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. NRF-2016R1A2 B4014668, NRF-2019R1F1A1060955) and the Brain Korea 21 Plus Project of Dept. of Clothing and Textiles, Yonsei University in 2020.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Polymers and Plastics

Access to Document

10.1007/s12221-020-0018-2

Fingerprint Dive into the research topics of 'AgNW Treated PU Nanofiber/PDMS Composites as Wearable Strain Sensors for Joint Flexion Monitoring'. Together they form a unique fingerprint.

Cite this

@article{bb28f6ad6b454f26bffec4b7a8a079d0,

title = "AgNW Treated PU Nanofiber/PDMS Composites as Wearable Strain Sensors for Joint Flexion Monitoring",

abstract = "In this study, wearable polyurethane (PU) nanofiber-based silver nanowires (AgNWs)/polydimethylsiloxane (PDMS) composites were fabricated and demonstrated as strain sensors to monitor human arm joint movements, investigating electrical resistance change with deformation. With varying content of AgNWs (0.5 wt%, 0.75 wt%, and 1 wt%) in ethanol, PU nanofiber nonwovens were coated with the AgNWs followed by packaging and encapsulation process with commercial snap buttons and PDMS coating. Each sample{\textquoteright}s surface morphology was characterized by scanning electron microscopy (SEM). After the curing process at 50 °C for 2 hours, the fabricated sensors were integrated to textile-arm sleeves for the wear-trials with a dummy and three human subjects. Given that the resistance of the sensors were the lowest when treated with 1 wt% of AgNWs, the sensors initially showed increase in resistance according to bending motion while the excessive bending resulted in decreasing trend in resistance. Regarding the varying joint flexion speed (0.125–0.5 Hz), sensors with 1 wt% of AgNWs showed the best performance as wearable strain sensors with more accurate signals and stability even under higher frequency.",

author = "Sujin Cha and Inhwan Kim and Eugene Lee and Eunji Jang and Gilsoo Cho",

note = "Funding Information: This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. NRF-2016R1A2 B4014668, NRF-2019R1F1A1060955) and the Brain Korea 21 Plus Project of Dept. of Clothing and Textiles, Yonsei University in 2020.",

year = "2020",

month = nov,

doi = "10.1007/s12221-020-0018-2",

language = "English",

volume = "21",

pages = "2479--2484",

journal = "Fibers and Polymers",

issn = "1229-9197",

publisher = "KOREAN FIBER SOCIETY",

number = "11",

}

TY - JOUR

T1 - AgNW Treated PU Nanofiber/PDMS Composites as Wearable Strain Sensors for Joint Flexion Monitoring

AU - Cha, Sujin

AU - Kim, Inhwan

AU - Lee, Eugene

AU - Jang, Eunji

AU - Cho, Gilsoo

N1 - Funding Information: This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. NRF-2016R1A2 B4014668, NRF-2019R1F1A1060955) and the Brain Korea 21 Plus Project of Dept. of Clothing and Textiles, Yonsei University in 2020.

PY - 2020/11

Y1 - 2020/11

N2 - In this study, wearable polyurethane (PU) nanofiber-based silver nanowires (AgNWs)/polydimethylsiloxane (PDMS) composites were fabricated and demonstrated as strain sensors to monitor human arm joint movements, investigating electrical resistance change with deformation. With varying content of AgNWs (0.5 wt%, 0.75 wt%, and 1 wt%) in ethanol, PU nanofiber nonwovens were coated with the AgNWs followed by packaging and encapsulation process with commercial snap buttons and PDMS coating. Each sample’s surface morphology was characterized by scanning electron microscopy (SEM). After the curing process at 50 °C for 2 hours, the fabricated sensors were integrated to textile-arm sleeves for the wear-trials with a dummy and three human subjects. Given that the resistance of the sensors were the lowest when treated with 1 wt% of AgNWs, the sensors initially showed increase in resistance according to bending motion while the excessive bending resulted in decreasing trend in resistance. Regarding the varying joint flexion speed (0.125–0.5 Hz), sensors with 1 wt% of AgNWs showed the best performance as wearable strain sensors with more accurate signals and stability even under higher frequency.

AB - In this study, wearable polyurethane (PU) nanofiber-based silver nanowires (AgNWs)/polydimethylsiloxane (PDMS) composites were fabricated and demonstrated as strain sensors to monitor human arm joint movements, investigating electrical resistance change with deformation. With varying content of AgNWs (0.5 wt%, 0.75 wt%, and 1 wt%) in ethanol, PU nanofiber nonwovens were coated with the AgNWs followed by packaging and encapsulation process with commercial snap buttons and PDMS coating. Each sample’s surface morphology was characterized by scanning electron microscopy (SEM). After the curing process at 50 °C for 2 hours, the fabricated sensors were integrated to textile-arm sleeves for the wear-trials with a dummy and three human subjects. Given that the resistance of the sensors were the lowest when treated with 1 wt% of AgNWs, the sensors initially showed increase in resistance according to bending motion while the excessive bending resulted in decreasing trend in resistance. Regarding the varying joint flexion speed (0.125–0.5 Hz), sensors with 1 wt% of AgNWs showed the best performance as wearable strain sensors with more accurate signals and stability even under higher frequency.

UR - http://www.scopus.com/inward/record.url?scp=85097651998&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85097651998&partnerID=8YFLogxK

U2 - 10.1007/s12221-020-0018-2

DO - 10.1007/s12221-020-0018-2

M3 - Article

AN - SCOPUS:85097651998

VL - 21

SP - 2479

EP - 2484

JO - Fibers and Polymers

JF - Fibers and Polymers

SN - 1229-9197

IS - 11

ER -