Influence of long-term storage on shape memory performance and mechanical behavior of pre-stretched commercial poly(methyl methacrylate) (PMMA)

In this paper, we experimentally investigate the influence of storage at 40 °C on the shape memory performance and mechanical behavior of a pre-stretched commercial poly(methyl methacrylate) (PMMA). This is to simulate the scenario in many applications. Although this is a very important topic in eng...

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Main Authors: Wang, Changchun, Dai, Yuming, Kou, Bo, Huang, Wei Min
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/145953
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1459532023-03-04T17:17:44Z Influence of long-term storage on shape memory performance and mechanical behavior of pre-stretched commercial poly(methyl methacrylate) (PMMA) Wang, Changchun Dai, Yuming Kou, Bo Huang, Wei Min School of Mechanical and Aerospace Engineering Engineering::Materials Shape Memory Polymer Storage In this paper, we experimentally investigate the influence of storage at 40 °C on the shape memory performance and mechanical behavior of a pre-stretched commercial poly(methyl methacrylate) (PMMA). This is to simulate the scenario in many applications. Although this is a very important topic in engineering practice, it has rarely been touched upon so far. The shape memory performance is characterized in terms of the shape fixity ratio (after up to one year of storage) and shape recovery ratio (upon heating to previous programming temperature). Programming in the mode of uniaxial tension is carried out at a temperature within the glass transition range to one of four prescribed programming strains (namely 10%, 20%, 40% and 80%). Also investigated is the residual strain after heating for shape recovery. The characterization of the mechanical behavior of programmed samples after storage for up to three months is via cyclic uniaxial tensile test. It is concluded that from an engineering application point view, for this particular PMMA, programming should be done at higher temperatures (i.e., above its Tg of 110 °C) in order to not only achieve reliable and better shape memory performance, but also minimize the influence of storage on the shape memory performance and mechanical behavior of the programmed material. This finding provides a useful guide for engineering applications of shape memory polymers, in particular based on the multiple-shape memory effect, temperature memory effect, and/or low temperature programming. Published version 2021-01-18T06:04:21Z 2021-01-18T06:04:21Z 2019 Journal Article Wang, C., Dai, Y., Kou, B., & Huang, W. M. (2019). Influence of long-term storage on shape memory performance and mechanical behavior of pre-stretched commercial poly(methyl methacrylate) (PMMA). Polymers, 11(12), 1978-. doi:10.3390/polym11121978 2073-4360 https://hdl.handle.net/10356/145953 10.3390/polym11121978 31805701 2-s2.0-85079137621 12 11 en Polymers © 2019 The Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Shape Memory Polymer
Storage
spellingShingle Engineering::Materials
Shape Memory Polymer
Storage
Wang, Changchun
Dai, Yuming
Kou, Bo
Huang, Wei Min
Influence of long-term storage on shape memory performance and mechanical behavior of pre-stretched commercial poly(methyl methacrylate) (PMMA)
description In this paper, we experimentally investigate the influence of storage at 40 °C on the shape memory performance and mechanical behavior of a pre-stretched commercial poly(methyl methacrylate) (PMMA). This is to simulate the scenario in many applications. Although this is a very important topic in engineering practice, it has rarely been touched upon so far. The shape memory performance is characterized in terms of the shape fixity ratio (after up to one year of storage) and shape recovery ratio (upon heating to previous programming temperature). Programming in the mode of uniaxial tension is carried out at a temperature within the glass transition range to one of four prescribed programming strains (namely 10%, 20%, 40% and 80%). Also investigated is the residual strain after heating for shape recovery. The characterization of the mechanical behavior of programmed samples after storage for up to three months is via cyclic uniaxial tensile test. It is concluded that from an engineering application point view, for this particular PMMA, programming should be done at higher temperatures (i.e., above its Tg of 110 °C) in order to not only achieve reliable and better shape memory performance, but also minimize the influence of storage on the shape memory performance and mechanical behavior of the programmed material. This finding provides a useful guide for engineering applications of shape memory polymers, in particular based on the multiple-shape memory effect, temperature memory effect, and/or low temperature programming.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Wang, Changchun
Dai, Yuming
Kou, Bo
Huang, Wei Min
format Article
author Wang, Changchun
Dai, Yuming
Kou, Bo
Huang, Wei Min
author_sort Wang, Changchun
title Influence of long-term storage on shape memory performance and mechanical behavior of pre-stretched commercial poly(methyl methacrylate) (PMMA)
title_short Influence of long-term storage on shape memory performance and mechanical behavior of pre-stretched commercial poly(methyl methacrylate) (PMMA)
title_full Influence of long-term storage on shape memory performance and mechanical behavior of pre-stretched commercial poly(methyl methacrylate) (PMMA)
title_fullStr Influence of long-term storage on shape memory performance and mechanical behavior of pre-stretched commercial poly(methyl methacrylate) (PMMA)
title_full_unstemmed Influence of long-term storage on shape memory performance and mechanical behavior of pre-stretched commercial poly(methyl methacrylate) (PMMA)
title_sort influence of long-term storage on shape memory performance and mechanical behavior of pre-stretched commercial poly(methyl methacrylate) (pmma)
publishDate 2021
url https://hdl.handle.net/10356/145953
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