Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Global Phase Diagrams of Mixed Surfactant-Polymer Systems at Interfaces   Insoluble surfactant monolayers at the air/water interface undergo a phase
transition from a high-temperature homogeneous state to a low-temperature
demixed state, where dilute and dense phases coexist. Alternatively, the
transition from a dilute phase to a dense one may be induced by compressing the
monolayer at constant temperature. We consider the case where the insoluble
surfactant monolayer interacts with a semi-dilute polymer solution solubilized
in the water subphase. The phase diagrams of the mixed surfactant/polymer
system are investigated within the framework of mean field theory. The polymer
enhances the fluctuations of the monolayer and induces an upward shift of the
critical temperature. The critical concentration is increased if the monomers
are more attracted (or at least less repelled) by the surfactant molecules than
by the bare water/air interface. In the case where the monomers are repelled by
the bare interface but attracted by the surfactant molecules (or vice versa),
the phase diagram may have a triple point. The location of the polymer special
transition line appears to have a big effect on the phase diagram of the
surfactant monolayer.

23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex