# Elastocaloric effect of shape memory polymers in elastic response regime

https://mdr.nims.go.jp/datasets/7a9a3fcf-d0d7-4fbb-a6f7-523f5e088a04

## File

- [Hirai_2023_J._Phys._Energy_5_034011.pdf](https://mdr.nims.go.jp/filesets/37fa6d68-3336-4278-88a9-0f97d5e5b3fc/download) ([Detail](https://mdr.nims.go.jp/filesets/37fa6d68-3336-4278-88a9-0f97d5e5b3fc.md))

## Id

7a9a3fcf-d0d7-4fbb-a6f7-523f5e088a04

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-10-17T01:17:07.031013Z

## Updated at

2024-01-05T13:12:33.932255Z

## Published at

2023-10-17T04:30:16.947717Z

## Doi



## First published url

https://doi.org/10.1088/2515-7655/ace7f3

## Date published

2023-07-01

## Recorded date published

2023-7-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Elastocaloric effect of shape memory polymers in elastic response regime
  title_type: original
  lang: en

## Description

- description: The solid-state cooling/heating technology based on the elastocaloric
    effect is one of the promising alternatives to vapor compression systems. The
    large elastocaloric temperature modulation is often generated through the non-linear
    strain-induced structural transition by applying large strain and/or stress to
    ferroelastic materials. Recently, an unconventional approach to expand the application
    possibilities of the elastocaloric effect was demonstrated by processing elastocaloric
    materials into kirigami structures, which was inspired by the art of paper cutting.
    By using this approach, only a small stretch of processed conventional plastics
    can locally provide more efficient performance of elastocaloric temperature modulation
    than that of ferroelastic materials. To further improve such a unique functionality,
    it is necessary to find plastic or polymeric materials showing large elastocaloric
    effects in the linear elastic response regime that can be driven by a MPa-order
    weak stress application, where the non-linear structural transition is irrelevant.
    In this work, by means of recently developed measurement technique for the elastocaloric
    effect based on the lock-in thermography, we found that shape memory polymers
    (SMPs) show prominent performance of the elastocaloric temperature modulation
    that is larger than conventional plastics. SMPs enable the control of the crystallinity
    by changing the cross-linking agents, melting temperature by changing the degree
    of polymerization, and orientation of the polymer chain segment by the shape memory
    effect. By utilizing the unique properties of SMPs, we manipulated their elastocaloric
    performance. The experimental results reported here will highlight the potential
    of smart polymers for flexible and durable elastocaloric applications.
  description_type: abstract
  lang: eng

## Creator

- name: Takamasa Hirai
  role: author
  orcid: https://orcid.org/0000-0002-5577-8018
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Koichiro Uto
  role: author
  orcid: https://orcid.org/0000-0001-7091-0585
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Mitsuhiro Ebara
  role: author
  orcid: https://orcid.org/0000-0002-7906-0350
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Ken-ichi Uchida
  role: author
  orcid: https://orcid.org/0000-0001-7680-3051
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: Elastocaloric effect
  schema: not_defined
- subject: Shape memory polymer
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Journal of Physics-Energy
  issn: '25157655'
  volume: '5'
  issue: '3'
  start_page: 34011
  end_page: 34011

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## Instrument



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



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## Fileset

- id: 37fa6d68-3336-4278-88a9-0f97d5e5b3fc
  filename: Hirai_2023_J._Phys._Energy_5_034011.pdf
  content_type: application/pdf
  size: 1688382
  md5: 47d2bccd32fb4940d309da7db9594a57

## Thumbnail

fileset_id: 37fa6d68-3336-4278-88a9-0f97d5e5b3fc
filename: Hirai_2023_J._Phys._Energy_5_034011.pdf