Results 1 to 10 of about 8,141 (253)

Collagen breaks at weak sacrificial bonds taming its mechanoradicals [PDF]

open access: yesNature Communications, 2023
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   +8 more
doaj   +5 more sources

Thermodynamics of Extra-Toughness and Hidden-Length in Polymeric Materials with Sacrificial Bonds

open access: yesApplied Mechanics, 2022
Sacrificial bonds have been observed in several biological materials and structures and can increase their toughness, i.e., their resistance to fracture.
Stefano Giordano   +2 more
exaly   +5 more sources

Cross-scale design of energy dissipative composites using self-repairing interfaces based on sacrificial bonds

open access: yesMaterials and Design, 2023
New composites with high energy dissipation and self-healing properties are required for structural materials, textiles, and protective equipment. This paper proposes a cross-scale strategy to design sacrificial bond composites (SBCs) using non-linear ...
Ramses Martinez, Vanessa Restrepo
exaly   +3 more sources

Mechanically Resistant Poly(N‐vinylcaprolactam) Microgels with Sacrificial Supramolecular Catechin Hydrogen Bonds

open access: yesAdvanced Science, 2022
Microgels (μgels) swiftly undergo structural and functional degradation when they are exposed to shear forces, which potentially limit their applicability in, e.g., biomedicine and engineering.
Robert Göstl   +2 more
exaly   +2 more sources

Biomimetic toughening design of 3D-printed polymeric structures: Enhancing toughness through sacrificial bonds and hidden lengths

open access: yesMaterials and Design
Spider silk is known for its excellent strength and fracture resistance properties due to its molecular design structure, characterized by sacrificial bonds and hidden lengths.
Ran Tao   +2 more
exaly   +3 more sources

Unraveling positive deformation rate-elongation relationships in tough and highly stretchable ionogels under rapid deformation [PDF]

open access: yesNature Communications
Polymer ionogels are conductive materials with broad applications, however, the toughening and deformation mechanisms of ionogels under rapid deformation remain largely unexplored.
Yueyin Guo   +5 more
doaj   +2 more sources

الأحکام الفقهية المتعلقة بصکوک الأضاحي دراسة فقهية مقارنة [PDF]

open access: yesمجلة الزهراء, 2021
الأحکام الفقهية المتعلقة بصکوک الأضاحي دراسة فقهية مقارنة  أحمد خيري أحمد عبد الحفيظ  قسم الفقه، کلية الشريعة والقانون، جامعة الأزهر، القاهرة، جمهورية مصر العربية.  البريد الإلکتروني: ahmedkhairy@azhar.edu.e.
أحمد خيري أحمد عبد الحفيظ
doaj   +1 more source

Mesoscale Modeling of Phase Separation Controlled by Hydrosilylation in Polyhydromethylsiloxane (PHMS)-Containing Blends

open access: yesNanomaterials, 2022
Controlling morphology of polysiloxane blends crosslinked by the hydrosilylation reaction followed by pyrolysis constitutes a robust strategy to fabricate polymer-derived ceramics (PDCs) for a number of applications, from water purification to hydrogen ...
Yao Xiong   +5 more
doaj   +1 more source

Dynamics of polymer molecules with sacrificial bond and hidden length systems: towards a physically-based mesoscopic constitutive law. [PDF]

open access: yesPLoS ONE, 2013
We investigate the entropic force-elongation behavior of a polymer chain in the presence of the sacrificial bond and hidden length (SBHL) system observed experimentally in many biomaterials.
Ahmed E Elbanna, Jean M Carlson
doaj   +1 more source

Biomimetic high performance artificial muscle built on sacrificial coordination network and mechanical training process

open access: yesNature Communications, 2021
Artificial muscles have a wide range of applications yet truly mimetic designs remain a challenge. Here, the authors use dynamic sacrificial bonds which are rearranged via a mechanical training process to optimise the characteristics of self ...
Zhikai Tu   +6 more
doaj   +1 more source

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