Results 221 to 230 of about 8,141 (253)

Do Sacrificial Bonds Affect the Viscoelastic and Fracture Properties of Bone?

Clinical Orthopaedics & Related Research, 2006
Sacrificial bonds have been suggested as a toughening mechanism for bone tissue. Ionic bridges formed by divalent calcium ions between collagen molecules have been proposed as candidates for sacrificial bonds. If this mechanism is active at the macroscopic level, we should observe changes in mechanical properties of bone when calcium ions are ...
Yener N, Yeni, Do-Gyoon, Kim, X Neil, Dong, A Simon, Turner, Clifford M, Les, David P, Fyhrie   +5 more
openaire   +2 more sources

Fabrication and testing of bioinspired microstructured alumina composites with sacrificial interpenetrating polymer bonds

Bioinspiration & Biomimetics, 2023
Abstract Bioinspired composites exhibit well-defined microstructures, where anisotropic ceramic particles are assembled and bonded by an organic matrix. However, it is difficult to fabricate these composites where both the ceramic particles and organic matrix work together to unlock toughening mechanisms, such as shear dissipation ...
Slocha Sapasakulvanit, Xin Ying Chan, Hortense Le Ferrand   +2 more
openaire   +3 more sources

Tung Oil-Based Modifier Toughening Epoxy Resin by Sacrificial Bonds

ACS Sustainable Chemistry and Engineering, 2019
Sacrificial bonds are critical for the excellent toughness of many natural materials. Herein, to toughen epoxy resin, a renewable toughener (TAA) was prepared by incorporating cyano groups into tun...
Zengshe Liu, Jinrui Huang, Laihui Xiao   +2 more
exaly   +2 more sources

Sacrificial bonds enhance toughness of dual polybutadiene networks

Polymer, 2016
Abstract A new dual network elastomer is developed that consists of polybutadiene crosslinked with both permanent and transient bonds. The transient network is formed by the association of urazole groups that are randomly attached to the polymer backbone. Subsequent orthogonal covalent crosslinking through hydrosilylation in the melt state leads to a
Barbara J. Gold, Claas H. Hövelmann, Christine Weiss, Aurel Radulescu, Jürgen Allgaier, Wim Pyckhout-Hintzen, Andreas Wischnewski, Dieter Richter   +7 more
openaire   +3 more sources

Collagen breaks at weak sacrificial bonds taming its mechanoradicals

2022
Abstract Collagen is a force-bearing, hierarchical structural protein important to all connective tissue. In tendon collagen, high load even below macroscopic failure level creates mechanoradicals by homolytic bond scission, similar to polymers.
Benedikt Rennekamp, Christoph Karfusehr, Markus Kurth, Aysecan Ünal, Kai Riedmiller, Ganna Gryn’ova, David M. Hudson, Frauke Gräter   +7 more
openaire   +1 more source

Embedded proteins and sacrificial bonds provide the strong adhesive properties of gastroliths

Nanoscale, 2012
The adhesive properties of gastroliths from a freshwater crayfish (Cherax quadricarinatus) were quantified by colloidal probe atomic force microscopy (AFM) between heavily demineralized gastrolith microparticles and gastrolith substrates of different composition. Combined AFM and transmission electron microscopy studies demonstrated that the sequential
Esben, Thormann, Hiroyasu, Mizuno, Kjell, Jansson, Niklas, Hedin, M Soledad, Fernández, José Luis, Arias, Mark W, Rutland, Ranjith Krishna, Pai, Lennart, Bergström   +8 more
openaire   +2 more sources

Molecular Engineering of Fracture Energy Dissipating Sacrificial Bonds Into Cellulose Nanocrystal Nanocomposites

Angewandte Chemie, 2014
AbstractEven though nanocomposites have provided a plethora of routes to increase stiffness and strength, achieving increased toughness with suppressed catastrophic crack growth has remained more challenging. Inspired by the concepts of mechanically excellent natural nanomaterials, one‐component nanocomposites were fabricated involving reinforcing ...
McKee, Jason R., Huokuna, Johannes, Martikainen, Lahja, Karesoja, Mikko, Nykanen, Antti, Kontturi, Eero, Tenhu, Heikki, Ruokolainen, Janne, Ikkala, Olli   +9 more
openaire   +4 more sources

Reinforcement of polysiloxane/silica elastomer composite by introduction of sacrificial bonds

Journal of Applied Polymer Science, 2017
ABSTRACTIt is a challenge to improve tear strength of silicone rubber, especially at high filler loading circumstances. A method is offered here to introduce sacrificial bonds into the system. In particular, amide group was introduced onto the phenyl group of monomer methyl phenyl cyclosiloxane ( first, and this functionalized monomer ( was further ...
Dannan Zhao, Guowen Chen, Huiling Yao, Yuanchao Song   +3 more
openaire   +1 more source

Characterizing the naturally occurring sacrificial bond within natural rubber

Polymer, 2019
Abstract The influence of protein on the superior properties of NR was analyzed in term of sacrificial bonds. It was found that the presence of the naturally occurring sacrificial bond provided by protein increases the tensile strengthen and toughness, furthermore prolongs the fatigue life of NR.
Xuan Fu, Cheng Huang, Yong Zhu, Guangsu Huang, Jinrong Wu   +4 more
openaire   +1 more source

Generalization of the sacrificial bond principle for gel and elastomer toughening

Polymer Journal, 2017
Although conventional polymer gels are known as mechanically weak materials, their fracture toughness can be effectively improved by introducing weak and brittle bonds into soft and stretchy polymer networks. This toughening method, denoted as the ‘sacrificial bond principle’, has been recently proposed.
openaire   +1 more source