Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing Large Deformation and Fracture Behavior of Physically Assembled
  Gel System by Varying Polymer Concentration   Physically assembled gels have promising applications in many fields because
of their tunable mechanical properties. Here, we report the mechanical
properties as a function of polymer volume fraction ($\phi$) for a physical gel
system consists of poly(styrene)-poly(isoprene)-poly(styrene) [PS-PI-PS] in
mineral oil. The PI-block molecular weight is higher than the entanglement
molecular weight, which leads to the entanglement of PI-blocks at higher
$\phi$. The micellar microstructure for all gels results in a similar stress
relaxation mechanism, as captured by the superposition of stress-relaxation
results. Tensile testing experiments reveal a strain-rate dependence mechanical
response for the entangled gels. To capture the critical energy release rate
($\Gamma_0$) over a range of $\phi$, both cavitation rheology and fracture
experiments were performed and we obtain $\Gamma_0\sim\phi^{2.0}$. The gel
moduli scale with the volume fraction as $\phi^{2.39}$, where the exponent is
likely dictated by the change in loop-to-bridge fraction with increasing
$\phi$.

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The categories of this paper are: hep-th
3
The categories of this paper are: physics
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The categories of this paper are: dg-ga
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
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The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: solv-int