Deformation of Filler Morphology in Strained Carbon Black Loaded Rubbers. A Study by Atomic Force Microscopy

1995 ◽  
Vol 68 (4) ◽  
pp. 652-659 ◽  
Author(s):  
S. Maas ◽  
W. Gronski
Keyword(s):  
Atomic Force Microscopy ◽  
Carbon Black ◽  
Average Distance ◽  
Rubber Matrix ◽  
Large Strains ◽  
Direction Parallel ◽  
Force Microscopy ◽  
Atomic Force ◽  
Affine Deformation ◽  
Filler Particles

Abstract The changes of the filler morphology of SBR vulcanizates loaded with 10 phr carbon black (N234 and N990) subjected to large strains were studied by Atomic Force Microscopy and image analysis. It was found that the filler particles tend to align in the force field. The average distance of the filler particles at the surface in the direction parallel and perpendicular to the strain direction is much smaller then according to affine deformation. The measurements give evidence of the inhomogeneous deformation of the rubber matrix and demonstrate the onset of failure at large deformation.

Atomic Force Microscopy of Elastomers: Morphology, Distribution of Filler Particles, and Adhesion Using Chemically Modified Tips

1999 ◽  
Vol 72 (5) ◽  
pp. 862-875 ◽  
Author(s):  
D. Trifonova-Van Haeringen ◽  
H. Schönherr ◽  
G. J. Vancso ◽  
L. van der Does ◽  
J. W. M. Noordermeer ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Carbon Black ◽  
Rubber Matrix ◽  
Phase Imaging ◽  
Silane Coupling Agents ◽  
Force Microscopy ◽  
Chemically Modified ◽  
Atomic Force ◽  
Silica Filler ◽  
Filler Particles

Abstract The microdispersion of silica and carbon black-based filler particles in unvulcanized and vulcanized ethylene-propylene-diene terpolymer (EPDM) rubbers was investigated by atomic force microscopy (AFM). Tapping mode phase imaging was found to be particularly useful for imaging of the filler aggregates and for the visualization of single primary filler particles. It was demonstrated that the use of silane coupling agents significantly improves the microdispersion of silica filler in the rubber matrix, as compared to (a) silica without coupling agent, and (b) to carbon black. These results correlate very well with the observed mechanical properties of the materials. In addition, adhesion imaging and the analysis of measured pull-off forces allowed us to differentiate between the filler particles and the rubber matrix, as well as between different types of filler particles. The application of chemically modified AFM tips in pull-off force measurements allowed us to monitor the increase of the hydrophilicity as a result of plasma treatment of the surface of crosslinked poly(dimethylsiloxane), and as a result of chlorination of butyl rubber.

scholarly journals BTEX detection with composites of ethylenevinyl acetate and nanostructured carbon

2017 ◽  
Vol 8 ◽  
pp. 982-988 ◽  
Author(s):  
Santa Stepina ◽  
Astrida Berzina ◽  
Gita Sakale ◽  
Maris Knite
Keyword(s):  
Atomic Force Microscopy ◽  
Carbon Black ◽  
Benzene Ring ◽  
Gas Sensing ◽  
Nanostructured Carbon ◽  
Force Microscopy ◽  
Atomic Force ◽  
Vapour Concentration ◽  
Benzene Toluene ◽  
Acetate Copolymer

By using a solvent-based method composites of ethylenevinyl acetate copolymer and carbon black (EVA–CB) were synthesized for sensing BTEX (benzene, toluene, ethylbenzene and xylene) vapours. The composites were characterized using atomic force microscopy (AFM) in an electroconductive mode. Gas sensing results show that EVA-CB can reproducibly detect BTEX and that the response increases linearly with vapour concentration. Compared to gas-sensing measurements of gasoline vapours, the responses with toluene and ethylbenzene are different and can be explained by varying side chains of the benzene ring.

Mesostructure of polymer/carbon black composites observed by conductive probe atomic force microscopy

Carbon ◽  
2001 ◽  
Vol 39 (2) ◽  
pp. 314-318 ◽  
Author(s):  
J. Ravier ◽  
F. Houzé ◽  
F. Carmona ◽  
O. Schneegans ◽  
H. Saadaoui
Keyword(s):  
Atomic Force Microscopy ◽  
Carbon Black ◽  
Force Microscopy ◽  
Atomic Force

scholarly journals Evaluation of Mechanical Properties of Carbon Black Reinforced Natural Rubber by Atomic Force Microscopy

2006 ◽  
Vol 79 (11) ◽  
pp. 509-515 ◽  
Author(s):  
Hideyuki NUKAGA ◽  
So FUJINAMI ◽  
Hiroyuki WATABE ◽  
Ken NAKAJIMA ◽  
Toshio NISHI
Keyword(s):  
Mechanical Properties ◽  
Atomic Force Microscopy ◽  
Carbon Black ◽  
Natural Rubber ◽  
Force Microscopy ◽  
Atomic Force

Self-organization of phthalocyanines on Al2O3 (1120) in aligned and ordered films

2004 ◽  
Vol 19 (7) ◽  
pp. 2061-2067 ◽  
Author(s):  
E. Barrena ◽  
J.O. Ossó ◽  
F. Schreiber ◽  
M. Garriga ◽  
M.I. Alonso ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Self Organization ◽  
X Ray Diffraction ◽  
Direction Parallel ◽  
Force Microscopy ◽  
Molecular Arrangement ◽  
Atomic Force ◽  
Organization Process ◽  
Microscopy Images ◽  
Molecular Stacking

We studied the self-organization process of F16CuPc films (20–30 ML) on stepped Al2O3 (1120) substrates. X-ray diffraction measurements revealed a highly ordered layered structure with the molecules in a nearly upright configuration. The morphology, investigated by atomic force microscopy, consisted of long (several microns) and narrow (20–100 nm) needlelike terraces unidirectionally aligned along one of the main crystallographic directions of the Al2O3 (1120) surface. High resolution atomic force microscopy images revealed in-plane molecular order with the molecular stacking direction parallel to the needlelike terraces. Such anisotropic morphology is the result of a self-organization process of F16CuPc in elongated crystallites driven to a preferential orientation by the interaction with the substrate. Spectroscopic ellipsometry showed that these films exhibit anisotropic optical properties correlated with the molecular arrangement.

scholarly journals Multiscale Network Modeling of Fibrin Fibers and Fibrin Clots with Protofibril Binding Mechanics

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1223
Author(s):  
Sumith Yesudasan ◽  
Rodney D. Averett
Keyword(s):  
Atomic Force Microscopy ◽  
Mechanical Behavior ◽  
Network Model ◽  
Large Strains ◽  
Chain Model ◽  
Force Extension ◽  
Nonlinear Spring ◽  
Force Microscopy ◽  
Atomic Force ◽  
Fibrin Clots

The multiscale mechanical behavior of individual fibrin fibers and fibrin clots was modeled by coupling atomistic simulation data and microscopic experimental data. We propose a new protofibril element composed of a nonlinear spring network, and constructed this based on molecular simulations and atomic force microscopy results to simulate the force extension behavior of fibrin fibers. This new network model also accounts for the complex interaction of protofibrils with one another, the effects of the presence of a solvent, Coulombic attraction, and other binding forces. The network model was formulated to simulate the force–extension mechanical behavior of single fibrin fibers from atomic force microscopy experiments, and shows good agreement. The validated fibrin fiber network model was then combined with a modified version of the Arruda–Boyce eight-chain model to estimate the force extension behavior of the fibrin clot at the continuum level, which shows very good correlation. The results show that our network model is able to predict the behavior of fibrin fibers as well as fibrin clots at small strains, large strains, and close to the break strain. We used the network model to explain why the mechanical response of fibrin clots and fibrin fibers deviates from worm-like chain behavior, and instead behaves like a nonlinear spring.

Study on the Structures and Surface Forces of Different Carbon Blacks by Atomic Force Microscopy

2014 ◽  
Vol 496-500 ◽  
pp. 106-109 ◽  
Author(s):  
Qing Shan Fu ◽  
Jian Chen ◽  
Zu Xiao Yu ◽  
Rui Song Yang
Keyword(s):  
Atomic Force Microscopy ◽  
Carbon Black ◽  
Polymer Matrix ◽  
Dibutyl Phthalate ◽  
Surface Forces ◽  
Surface Absorption ◽  
Force Microscopy ◽  
Carbon Blacks ◽  
Atomic Force ◽  
High Structure

Carbon blacks are used universally as fillers in polymer matrix for mechanical, electronical and thermal properties improvement. Plenty of studies show that the structure and surface properties affect the function of carbon blacks in polymer matrix intensively. However, the reinforcing mechanism is still controversial. In this study, we studied the structure of three carbon blacks by Dibutyl phthalate (DBP) absorption and atomic force microscopy (AFM) and analyzed the absorption/desorption forces of the three carbon blacks surface by force-distance curves. The results show that the carbon black with relatively high structure possesses more branches and bigger aggregation morphologies and shows the highest surface absorption/desorption forces, which may increase the reaction between carbon black and polymer matrix.

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