In a polymer solution, a theta solvent (or θ solvent) is a solvent in which polymer coils act like ideal chains, assuming exactly their random walk coil...

the particular polymer-solvent system. For solvents, a value of a = 0.5 {\displaystyle a=0.5} is indicative of a theta solvent. A value of a = 0.8 {\displaystyle...

the theta solvent, or the state of the polymer solution where the value of the second virial coefficient becomes 0, the intermolecular polymer-solvent repulsion...

transition of a polymer chain from good solvent behavior through ideal or theta solvent behavior to poor solvent behavior. The canonical coil–globule transition...

like a fractal object. In bad solvent it behaves like a solid sphere. In the so-called θ {\displaystyle \theta } solvent, ν = 1 / 2 {\displaystyle \nu...

computational chemistry, a solvent model is a computational method that accounts for the behavior of solvated condensed phases. Solvent models enable simulations...

2 ) / λ {\displaystyle \ q=4\pi n_{0}\sin(\theta /2)/\lambda } with n0 the refractive index of the solvent, λ the wavelength of the light source, NA the...

{\displaystyle S_{\text{conf}}/k_{\rm {B}}\approx -\theta _{A}\ln(\theta _{A})-(1-\theta _{A})\ln(1-\theta _{A}).} On the other hand, the entropy of a molecule...

formulas a = r sin ⁡ θ {\displaystyle a=r\sin \theta } , h = r ( 1 − cos ⁡ θ ) {\displaystyle h=r(1-\cos \theta )} , 2 h r = a 2 + h 2 {\displaystyle 2hr=a^{2}+h^{2}}...

mg\cos \theta } : m g sin ⁡ θ = N μ {\displaystyle mg\sin \theta =N\mu } m g sin ⁡ θ = μ m g cos ⁡ θ {\displaystyle mg\sin \theta =\mu mg\cos \theta } ( sin...

ellipticity, [ θ ] {\displaystyle [\theta ]} , are readily interconverted by the equation: [ θ ] = 3298.2 Δ ε . {\displaystyle [\theta ]=3298.2\,\Delta \varepsilon...

the solvent (in which case, the interactions between monomer and monomer, solvent molecule and solvent molecule, and between monomer and solvent are identical...

temperatures approaching the liquid-vapor critical point of the solvent. At such temperatures the solvent expands much more rapidly than the polymer, whose segments...

Seiichi (March 8, 2007). "Unperturbed chain dimensions of polyethylene in theta solvents". Journal of Polymer Science Part C: Polymer Symposia. 15 (1): 285–294...

_{\alpha \theta }+\gamma _{\theta \beta }\cos \left(\theta \right)+\gamma _{\alpha \beta }\cos \left(\alpha \right)&=0\\\gamma _{\alpha \theta }\cos \left(\theta...

discovered the understanding of the term 'theta.' In other words, is the constant of hydrodynamic. With the theta point that is the neutral volumes interactions...

has been used to describe persistence in polymer chains in good and theta solvents, branched polymers, polymers of complex topology such as star polymers...

changes in the vibrational frequencies of molecules due to variations in the solvent environment. Solvatochromism is a broader term that describes changes in...

{\displaystyle K={\frac {k}{k_{-1}}}={\frac {\theta }{(1-\theta )P}},} or θ = K P 1 + K P , {\displaystyle \theta ={\frac {KP}{1+KP}},} where P {\displaystyle...

different concentration at the surface of a solvent than in its bulk. This difference varies from one solute–solvent combination to another. Gibbs isotherm...

(}{\Big (}{\frac {1-\cos(\theta _{a})}{\sin(\theta _{a})}}{\Big )}{\Big (}3+{\Big (}{\frac {1-\cos(\theta _{a})}{\sin(\theta _{a})}}{\Big )}^{2}{\Big )}{\Big...

{q^{4}}{m^{2}c^{4}}}\right){\frac {1+\cos ^{2}2\theta }{2}}=I_{e}7.94\times 10^{-26}{\frac {1+\cos ^{2}2\theta }{2}}=I_{e}f} Hence the atomic nuclei, which...

{\displaystyle \delta _{2}} are the cohesive energy densities of the polymer and solvent, respectively, V ¯ {\displaystyle {\bar {V}}} is the molar volume of the...

2 {\displaystyle \cos \theta \ \mathrm {obs} =\ f\cos \theta _{1}+(1-f)\cos \theta _{2}} where: θ   o b s {\displaystyle \theta \ \mathrm {obs} } is the...

to be nonpolar and, thus, prefer other neutral molecules and nonpolar solvents. Because water molecules are polar, hydrophobes do not dissolve well among...

as a function of both temperature and concentration of molecules in a solvent (typically water). Metallotropic LCs are composed of both organic and inorganic...

_{<}=Ar\cos \theta \,,} while outside the sphere: ϕ > = ( B r + C r 2 ) cos ⁡ θ . {\displaystyle \phi _{>}=\left(Br+{\frac {C}{r^{2}}}\right)\cos \theta \,.}...

n_{0}}{\lambda }}\sin \left({\frac {\theta }{2}}\right)} where λ is the incident laser wavelength, n0 is the solvent refractive index and θ is the angle...

_{\text{bonds}}k_{r}(R_{II'}-r_{0})^{2}\\&+\sum _{\text{angles}}k_{\theta }(\theta -\theta _{0})^{2}+\sum _{\text{torsions}}\sum _{n}k_{\phi ,n}[\cos(n\phi...

of 100 kJ/mol, making them fairly stable in a variety of temperatures, solvents, and potentials. The monolayer packs tightly due to van der Waals interactions...