Preparation and characterization of shape memory composite foams based on solid foaming method

2018 ◽  
Vol 135 (46) ◽  
pp. 46767 ◽  
Author(s):  
Y. Yao ◽  
T. Zhou ◽  
Y. Xu ◽  
Y. Liu ◽  
J. Leng
Keyword(s):  
Shape Memory ◽  
Composite Foams ◽  
Shape Memory Composite

Preparation and characterization of triple shape memory composite foams

Soft Matter ◽  
2014 ◽  
Vol 10 (40) ◽  
pp. 8066-8074 ◽  
Author(s):  
Hossein Birjandi Nejad ◽  
Richard M. Baker ◽  
Patrick T. Mather
Keyword(s):  
Shape Memory ◽  
Composite Foams ◽  
Triple Shape Memory ◽  
Shape Memory Composite

Fabrication and characterization of auxetic shape memory composite foams

2018 ◽  
Vol 152 ◽  
pp. 1-7 ◽  
Author(s):  
Yongtao Yao ◽  
Yun Luo ◽  
Yuncheng Xu ◽  
Bing Wang ◽  
Jinyang Li ◽  
...  
Keyword(s):  
Shape Memory ◽  
Composite Foams ◽  
Fabrication And Characterization ◽  
Shape Memory Composite

Synthesis and Characterization of Radiopaque Shape Memory Polymers

2017 ◽  
Author(s):  
Kendal Ezell ◽  
Landon Nash ◽  
Sonya Gordon ◽  
Duncan Maitland
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymer ◽  
The United States ◽  
Endovascular Embolization ◽  
Polymer Foam ◽  
X Ray ◽  
Unruptured Cerebral Aneurysm ◽  
Composite Foams ◽  
Function Impairment

An estimated 6 million people in the United States have an unruptured cerebral aneurysm [1]. If left untreated, these aneurysms can rupture and to lead to severe brain function impairment or even death. Shape memory polymer (SMP) foams have been proposed for use to optimize endovascular embolization in place of current embolization devices [2,3]. SMPs are capable of actuating from a programmed secondary geometry to their expanded primary geometry in response to a stimulus, such as body temperature [4]. The expanded foam geometry provides an interface for embolization of the aneurysm to occur, however, treatment with these devices has limited visibility under fluoroscopy. Previous work by Hasan et al. increased radiopacity through the incorporation of tungsten (W) nanoparticles. These composite foams showed successful x-ray visibility, but aggregate disruption of the SMP matrix led to decreased mechanical properties [5]. This work addresses limitations of composite SMP foams, namely toughness, by chemically incorporating x-ray visible monomers, such as the triodobenzene containing monomer, 5-Amino-2,4,6-triiodoisophthalic acid (AT), into the material composition. These materials enable contrast agent loading without disrupting the polymer matrix. This polymer foam system was characterized to determine the clinical relevance of the improved radiopaque SMP foam for occlusion devices.

Performance characterization of a shape memory composite mirror

2005 ◽  
Author(s):  
Steven J. Varlese ◽  
Melville P. Ulmer ◽  
Jason Hermiller ◽  
Kris Young ◽  
Michael Graham ◽  
...  
Keyword(s):  
Shape Memory ◽  
Performance Characterization ◽  
Shape Memory Composite
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