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Title: Modeling the Coupled Chemo-Thermo-Mechanical Behavior of Amorphous Polymer Networks.

Abstract

Amorphous polymers exhibit a rich landscape of time-dependent behavior including viscoelasticity, structural relaxation, and viscoplasticity. These time-dependent mechanisms can be exploited to achieve shape-memory behavior, which allows the material to store a programmed deformed shape indefinitely and to recover entirely the undeformed shape in response to specific environmental stimulus. The shape-memory performance of amorphous polymers depends on the coordination of multiple physical mechanisms, and considerable opportunities exist to tailor the polymer structure and shape-memory programming procedure to achieve the desired performance. The goal of this project was to use a combination of theoretical, numerical and experimental methods to investigate the effect of shape memory programming, thermo-mechanical properties, and physical and environmental aging on the shape memory performance. Physical and environmental aging occurs during storage and through exposure to solvents, such as water, and can significantly alter the viscoelastic behavior and shape memory behavior of amorphous polymers. This project – executed primarily by Professor Thao Nguyen and Graduate Student Rui Xiao at Johns Hopkins University in support of a DOE/NNSA Presidential Early Career Award in Science and Engineering (PECASE) – developed a theoretical framework for chemothermo- mechanical behavior of amorphous polymers to model the effects of physical aging and solvent-induced environmentalmore » factors on their thermoviscoelastic behavior.« less

Authors:
 [1];  [1];  [1]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1171987
Report Number(s):
SAND2015-1359R
567211
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Zimmerman, Jonathan A., Nguyen, Thao D., and Xiao, Rui. Modeling the Coupled Chemo-Thermo-Mechanical Behavior of Amorphous Polymer Networks.. United States: N. p., 2015. Web. doi:10.2172/1171987.
Zimmerman, Jonathan A., Nguyen, Thao D., & Xiao, Rui. Modeling the Coupled Chemo-Thermo-Mechanical Behavior of Amorphous Polymer Networks.. United States. doi:10.2172/1171987.
Zimmerman, Jonathan A., Nguyen, Thao D., and Xiao, Rui. Sun . "Modeling the Coupled Chemo-Thermo-Mechanical Behavior of Amorphous Polymer Networks.". United States. doi:10.2172/1171987. https://www.osti.gov/servlets/purl/1171987.
@article{osti_1171987,
title = {Modeling the Coupled Chemo-Thermo-Mechanical Behavior of Amorphous Polymer Networks.},
author = {Zimmerman, Jonathan A. and Nguyen, Thao D. and Xiao, Rui},
abstractNote = {Amorphous polymers exhibit a rich landscape of time-dependent behavior including viscoelasticity, structural relaxation, and viscoplasticity. These time-dependent mechanisms can be exploited to achieve shape-memory behavior, which allows the material to store a programmed deformed shape indefinitely and to recover entirely the undeformed shape in response to specific environmental stimulus. The shape-memory performance of amorphous polymers depends on the coordination of multiple physical mechanisms, and considerable opportunities exist to tailor the polymer structure and shape-memory programming procedure to achieve the desired performance. The goal of this project was to use a combination of theoretical, numerical and experimental methods to investigate the effect of shape memory programming, thermo-mechanical properties, and physical and environmental aging on the shape memory performance. Physical and environmental aging occurs during storage and through exposure to solvents, such as water, and can significantly alter the viscoelastic behavior and shape memory behavior of amorphous polymers. This project – executed primarily by Professor Thao Nguyen and Graduate Student Rui Xiao at Johns Hopkins University in support of a DOE/NNSA Presidential Early Career Award in Science and Engineering (PECASE) – developed a theoretical framework for chemothermo- mechanical behavior of amorphous polymers to model the effects of physical aging and solvent-induced environmental factors on their thermoviscoelastic behavior.},
doi = {10.2172/1171987},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Feb 01 00:00:00 EST 2015},
month = {Sun Feb 01 00:00:00 EST 2015}
}

Technical Report:

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