Water Vapor Sorption into Nafion&lt;sup&gt;&amp;reg;&lt;/sup&gt; Ultra-Thin Films as Seen by Humidity-Variable Spectroscopic Ellipsometry

Yoshimoto, Shin; Hosomi, Hiroyuki; Takai, Yoshihiro; Ito, Kenji

doi:10.1295/koron.2016-0051

KOBUNSHI RONBUNSHU

2017

DOI: 10.1295/koron.2016-0051

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Water Vapor Sorption into Nafion<sup>®</sup> Ultra-Thin Films as Seen by Humidity-Variable Spectroscopic Ellipsometry

Shin Yoshimoto

Hiroyuki Hosomi

Yoshihiro Takai

et al.

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Cited by 3 publications

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“…Nafion is a polyelectrolyte consisting primarily of hydrophobic (-CF2-CF2-) groups and relatively fewer ionic groups in the form of (-SO3-H + ) which absorb moisture. [376,377] Nafion is a desirable material for RH sensing because it exhibits high hydrophilicity, [378] chemical stability, small thermal coefficient of expansion, [379] and good mechanical toughness. [380] Additionally, large sensing ranges and almost instantaneous response times have been reported when using Nafion.…”

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Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Tabor

Chatterjee

Ghosh

2020

Adv Materials Technologies

100

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Thermophysiological comfort in humans is sought universally but seldom achieved due to biological and physiological variances. Most people in developed parts of the world rely on central heating and cooling systems to achieve thermophysiological comfort which is highly energy-intensive, inefficient, and rarely satisfactory. A potential solution to this issue is a wearable personal thermal comfort system (PTCS) consisting of textile-based temperature and moisture sensors, that can sense the environment and physiology of the wearer, combined with thermal and moisture responsive actuators, and/or heating/cooling devices to provide an individualized thermal environment. Moving thermal regulation away from the built environment to the microclimate surrounding the human body with the use of textiles has the This article is protected by copyright. All rights reserved. 2 potential to provide personalized thermal comfort and energy savings. Such a system may employ thermal comfort models and leverage the Internet of Things (IoT) and machine learning (ML) to understand individuals' comfort requirements in the current environment. Herein, the current state of textile-based active and passive thermophysiological comfort systems/technologies is summarized, including their environmental impact, major thermal comfort models, and factors influencing comfort (such as heat and moisture transfer). Also, active and passive textile-based devices (sensors, actuators, and flexible heating/cooling devices) that may be incorporated into a textile-based wearable PTCS are comprehensively discussed with an emphasis on their advantages, limitations, and future prospects.

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Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Tabor

Chatterjee

Ghosh

2020

Adv Materials Technologies

100

View full text Add to dashboard Cite

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Steam permeation properties of perfluorosulfonic acid/ceramic composite membranes at a high temperature under various humidity conditions

Moriyama

Wakimoto

Nagasawa

et al. 2023

Separation and Purification Technology

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Nafion film temperature/humidity sensing based on optical fiber Fabry-Perot interference

Liu

Yang

et al. 2018

Sensors and Actuators A: Physical

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Water Vapor Sorption into Nafion<sup>®</sup> Ultra-Thin Films as Seen by Humidity-Variable Spectroscopic Ellipsometry

Cited by 3 publications

References 23 publications

Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Steam permeation properties of perfluorosulfonic acid/ceramic composite membranes at a high temperature under various humidity conditions

Nafion film temperature/humidity sensing based on optical fiber Fabry-Perot interference

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