Simple synthesis of self-assembled nacre-like materials with 3D periodic layers from nanochitin via hydrogelation and mineralization

2022 ◽  
Author(s):  
Junhua Xu ◽  
Liang Liu ◽  
juan yu ◽  
Yujun Zu ◽  
Wenhui Pei ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Simple Synthesis ◽  
Natural Materials ◽  
Hierarchical Architectures ◽  
Self Assembled

The superb mechanical properties of some natural materials usually result from highly ordered, multiscale and hierarchical architectures such as bone, nacre, exoskeleton etc. Nonetheless, the gene regulated process can not...

Controllable mechanical properties of epoxy composites by incorporating self-assembled carbon nanotube–montmorillonite

2019 ◽  
Vol 164 ◽  
pp. 368-376 ◽  
Author(s):  
Shaohua Zeng ◽  
Mingxia Shen ◽  
Yijiao Xue ◽  
Yifei Zheng ◽  
Ke Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotube ◽  
Epoxy Composites ◽  
Self Assembled

Dipeptide Self-Assembled Hydrogels with Tunable Mechanical Properties and Degradability for 3D Bioprinting

2019 ◽  
Vol 11 (50) ◽  
pp. 46419-46426 ◽  
Author(s):  
Honglei Jian ◽  
Meiyue Wang ◽  
Qianqian Dong ◽  
Jieling Li ◽  
Anhe Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
3D Bioprinting ◽  
Self Assembled ◽  
Tunable Mechanical Properties

Mechanical Properties of Oligothiophene Self Assembled Films by Atomic Force Microscopy.

2005 ◽  
Vol 871 ◽  
Author(s):  
Imma Ratera ◽  
Jinyu Chen ◽  
Amanda Murphy ◽  
Frank Ogletree ◽  
Jean M. J. Fréchet ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Atomic Force Microscopy ◽  
Self Assembled Monolayers ◽  
Force Microscopy ◽  
Atomic Force ◽  
Structure Of Molecules ◽  
Cell Dimensions ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Unit Cell Dimensions

AbstractThe oligothiophene derivative (4-(5″″-tetradecyl-[2,2′;5′,2″;5″,2″′;5″′,2″″] pentathiophen-5-yl)-butyric acid (C14-5TBA) was synthesized and the structural and mechanical properties of self-assembled monolayers on mica have been studied by atomic force microscopy (AFM). The films were prepared by drop casting a dilute THF solution (1mM) of the oligothiphene on mica. Islands containing primarily monolayers with a very small percentage of multilayers were formed. The molecules adsorb through the carboxylic group, and expose the alkyl chain (CH2)13CH3. High resolution AFM scans reveal a well ordered structure of molecules with unit cell dimensions of 0.65 and 0.46 nm. Applying load to the tip, the molecular film was gradually compressed from an initial height of 4.1nm to a final one of 2.6 nm, corresponding to atilt of the alkyl chains. In regions covered with bilayers the molecules in the second layer were oriented opposite to those in the first layer, thus exposing the carboxylic end group to the air. These second layer was easily removed as the tip pressure increased.

Influence of the Molecular Structure and Morphology of Self-Assembled 1,3,5-Benzenetrisamide Nanofibers on their Mechanical Properties

Small ◽  
2012 ◽  
Vol 8 (16) ◽  
pp. 2563-2570 ◽  
Author(s):  
Daniel Kluge ◽  
Julia C. Singer ◽  
Jens W. Neubauer ◽  
Frank Abraham ◽  
Hans-Werner Schmidt ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Mechanical Properties ◽  
Structure And Morphology ◽  
Self Assembled

Effect of self-assembled nanofibrous silk/polycaprolactone layer on the osteoconductivity and mechanical properties of biphasic calcium phosphate scaffolds

2012 ◽  
Vol 8 (1) ◽  
pp. 302-312 ◽  
Author(s):  
S.I. Roohani-Esfahani ◽  
Z.F. Lu ◽  
J.J. Li ◽  
R. Ellis-Behnke ◽  
D.L. Kaplan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Calcium Phosphate ◽  
Biphasic Calcium Phosphate ◽  
Self Assembled

scholarly journals Hybrid Interface in Sepiolite Rubber Nanocomposites: Role of Self-Assembled Nanostructure in Controlling Dissipative Phenomena

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 486 ◽  
Author(s):  
Elkid Cobani ◽  
Irene Tagliaro ◽  
Marco Geppi ◽  
Luca Giannini ◽  
Philippe Leclère ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rubber Matrix ◽  
Styrene Butadiene Rubber ◽  
Nuclear Magnetic Resonance Analysis ◽  
Butadiene Rubber ◽  
Resonance Analysis ◽  
Self Assembled ◽  
Styrene Butadiene ◽  
The Impact

Sepiolite (Sep)–styrene butadiene rubber (SBR) nanocomposites were prepared by using nano-sized sepiolite (NS-SepS9) fibers, obtained by applying a controlled surface acid treatment, also in the presence of a silane coupling agent (NS-SilSepS9). Sep/SBR nanocomposites were used as a model to study the influence of the modified sepiolite filler on the formation of immobilized rubber at the clay-rubber interface and the role of a self-assembled nanostructure in tuning the mechanical properties. A detailed investigation at the macro and nanoscale of such self-assembled structures was performed in terms of the organization and networking of Sep fibers in the rubber matrix, the nature of both the filler–filler and filler–rubber interactions, and the impact of these features on the reduced dissipative phenomena. An integrated multi-technique approach, based on dynamic measurements, nuclear magnetic resonance analysis, and morphological investigation, assessed that the macroscopic mechanical properties of clay nanocomposites can be remarkably enhanced by self-assembled filler structures, whose formation can be favored by manipulating the chemistry at the hybrid interfaces between the clay particles and the polymers.

scholarly journals The Alternatives to Traditional Materials for Subsoil Stabilization and Embankments

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3018 ◽  
Author(s):  
Mirjana Vukićević ◽  
Miloš Marjanović ◽  
Veljko Pujević ◽  
Sanja Jocković
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Power Plants ◽  
Soil Stabilization ◽  
Soft Soil ◽  
Physical And Mechanical Properties ◽  
Engineering Properties ◽  
High Plasticity ◽  
Natural Materials ◽  
Positive Effects

Major infrastructure projects require significant amount of natural materials, often followed by the soft soil stabilization using hydraulic binders. This paper presents the results of a laboratory study of alternative waste materials (fly ash and slag) that can be used for earthworks. Results of high plasticity clay stabilization using fly ash from Serbian power plants are presented in the first part. In the second part of the paper, engineering properties of ash and ash-slag mixtures are discussed with the emphasis on the application in road subgrade and embankment construction. Physical and mechanical properties were determined via following laboratory tests: Specific gravity, grain size distribution, the moisture–density relationship (Proctor compaction test), unconfined compressive strength (UCS), oedometer and swell tests, direct shear and the California bearing ratio (CBR). The results indicate the positive effects of the clay stabilization using fly ash, in terms of increasing strength and stiffness and reducing expansivity. Fly ashes and ash-slag mixtures have also comparable mechanical properties with sands, which in combination with multiple other benefits (lower energy consumption and CO2 emission, saving of natural materials and smaller waste landfill areas), make them suitable fill materials for embankments, especially considering the necessity for sustainable development.

Mechanical properties of self-assembled chitin nanofiber networks

2014 ◽  
Vol 2 (17) ◽  
pp. 2461-2466 ◽  
Author(s):  
Pegah Hassanzadeh ◽  
Wei Sun ◽  
Johann P. de Silva ◽  
Jungho Jin ◽  
Kamil Makhnejia ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chitin Nanofiber ◽  
Self Assembled
Sign in / Sign up

Export Citation Format

Share Document