Mechanically Robust Shape Memory Polyurethane Nanocomposites for Minimally Invasive Bone Repair

2019 ◽  
Vol 2 (3) ◽  
pp. 1056-1065 ◽  
Author(s):  
Yuanchi Zhang ◽  
Jinlian Hu ◽  
Xin Zhao ◽  
Ruiqi Xie ◽  
Tingwu Qin ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Shape Memory ◽  
Bone Repair ◽  
Shape Memory Polyurethane ◽  
Polyurethane Nanocomposites

scholarly journals Isocyanate Modified GO Shape-Memory Polyurethane Composite

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 118 ◽  
Author(s):  
Yuanchi Zhang ◽  
Jinlian Hu
Keyword(s):  
Graphene Oxide ◽  
Minimally Invasive ◽  
Shape Memory ◽  
Bone Repair ◽  
Recovery Process ◽  
Invasive Treatment ◽  
Element Analysis ◽  
Polyurethane Composite ◽  
Shape Memory Effects ◽  
Shape Memory Polyurethane

Shape-memory composites have benefits for minimally invasive surgery, but their wider applications for bone repair are hindered by conflicts between the mechanical and memory performances, especially at load-bearing locations. In this study, we fabricated a graphene oxide shape-memory polyurethane composite through the chemical combination of graphene oxide and isocyanate, in order to realize satisfactory mechanical and shape-memory effects. As desired, a modulus of ~339 MPa and a shape recovery ratio of 98% were achieved, respectively, in the composite. In addition, finite element analysis demonstrated that, after being implanted in a defective bone through a minimally invasive treatment, where the highest stress was distributed at the implant–bone interface, this composite could offer a generated force during the recovery process. Furthermore, we also discuss the origins of the improved mechanical and memory properties of the composites, which arise from increased net-points and the stable molecular structure inside. Therefore, with its superior structure and properties, we envision that this shape-memory composite can provide new insights toward the practical application of shape-memory polymers and composites in the field of bone repair.

Shape memory polyurethane nanocomposites with a functionalized graphene

Ifost ◽  
2013 ◽  
Author(s):  
Gansukh Erdenedelger ◽  
Jeong Ho Kim ◽  
Jin Taek Choi ◽  
Trung Dung Dao ◽  
Kyung Min Oh ◽  
...  
Keyword(s):  
Shape Memory ◽  
Functionalized Graphene ◽  
Shape Memory Polyurethane ◽  
Polyurethane Nanocomposites

Shape memory polyurethane nanocomposites with functionalized graphene

2012 ◽  
Vol 21 (7) ◽  
pp. 075017 ◽  
Author(s):  
Jin Taek Choi ◽  
Trung Dung Dao ◽  
Kyung Min Oh ◽  
Hyung-il Lee ◽  
Han Mo Jeong ◽  
...  
Keyword(s):  
Shape Memory ◽  
Functionalized Graphene ◽  
Shape Memory Polyurethane ◽  
Polyurethane Nanocomposites
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