Modeling the phase behavior of polymer/clay nanocomposites

Accounts of Chemical Research

Volumn 32, Issue 8, 1999, Pages 651-657

  Balazs, Anna C ^a   Singh, Chandralekha ^a   Zhulina, Ekaterina ^a   Lyatskaya, Yulia ^a  

^a University of Pittsburgh   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

POLYMER; SURFACTANT;

ANALYTIC METHOD; CHEMICAL STRUCTURE; CLAY; MOLECULAR INTERACTION; MOLECULAR MODEL; REVIEW; THERMODYNAMICS;

EID: 0032841667     PISSN: 00014842     EISSN: None     Source Type: Journal    
DOI: 10.1021/ar970336m     Document Type: Review

References (22)

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12. Our SCF calculations are based on an incompressible model. In the reference state for the organically modified clays, we consider the system to be composed of the two surfaces and the tethered surfactants; there are no void or solvent sites in the system.
13. gr (= 25, 50, 100) are not identical. Namely, the shorter chains will achieve this state at smaller surface separations than the longer surfactants.
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16. χsurf is comparable to a binding energy of (75/6) = 12.5 kT.
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22. Note that the thick adsorbed layer of end-functionalized chains effectively decreases the aspect ratio, D, of the disk. As can be seen from Figure 8, decreasing D increases the region of miscibility for the isotropic phase. In this way, adsorbed, endfunctionalized chains promote the thermodynamic stability of the homogeneous mixture.