Bismaleimide based shape memory polymers: Correlation between chemical composition and mechanical properties

Amber J.W. McClung, Joseph A. Shumaker, Jeffery W. Baur, Stephanie D. Reed, Shawna A. Matthys

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Shape memory polymers have attracted great interest for application in adaptive or morphing structures. In order to understand the origins of the mechanical performance and durability of these polymers, the chemical structure must be understood, which is often hindered by the proprietary nature of commercially available shape memory polymers and their additives. In the present study, a series of novel linear polyaspartimide-polyurea based polymers utilizing 4-4-bismaleimidodiphenylmethane and an aliphatic Jeffamine diamine are thermomechanically characterized as a function of chemical structure. A di-isocyanate resin is incorporated to create a thermosetting material with both improved toughness and variable cross-link densities. The thermal and mechanical properties are determined utilizing thermogravimetric analysis and dynamic mechanical analysis. In addition, the shape memory cycle with free recovery is conducted on these polymers. The thermomechanical and shape memory properties are analyzed to elucidate the correlation between the chemical composition and changes in the mechanical performance. With a thorough understanding of structure-property relationships, the chemical composition of these novel bismaleimide based shape memory polymers can be tailored to meet the desired mechanical performance requirements of aerospace applications.

Original languageEnglish (US)
Title of host publication52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
DOIs
StatePublished - 2011
Externally publishedYes
Event52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Denver, CO, United States
Duration: Apr 4 2011Apr 7 2011

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508

Other

Other52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Country/TerritoryUnited States
CityDenver, CO
Period4/4/114/7/11

ASJC Scopus subject areas

  • Architecture
  • General Materials Science
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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