Measurement of Diffusion Coefficients of Dimethyl Formamide and Dimethyl Acetamide in Segmented Poly (urethane-urea)
نویسندگان
چکیده
منابع مشابه
2,2-Dimethyl-N-(phenylsulfonyl)acetamide
In the title compound, C(10)H(13)NO(3)S, the N-H and C=O bonds in the SO(2)-NH-CO-C segment are anti to each other. The benzene ring and the SO(2)-NH-CO-C segment form a dihedral angle of 87.4 (1)°. The crystal packing features inversion-related dimers linked by pairs of N-H⋯O hydrogen bonds.
متن کاملAcoustical Studies of Some Derivatives of 4-Amino Benzoic Acid in 1, 4-Dioxane and Dimethyl Formamide at 308.15 K
The ultrasonic velocity, density and viscosity of some Schiff bases of 4-amino benzoic acid were measured in 1,4-dioxane and dimethylformamide at 308.15 K. Various acoustical properties such as isentropic compressibility (ks), Rao’s molar sound function (Rm), the Van der Waals constant (b), molar compressibility (W), inter molecular free len...
متن کامل2,2-Dimethyl-N-(2-methylphenylsulfonyl)acetamide
The asymmetric unit of the title compound, C(11)H(15)NO(3)S, contains two independent mol-ecules in which the amide bonds show a trans conformation. The C-S-N-C torsion angles are -67.4 (2) and 63.8 (2)° in the two independent mol-ecules. In one of the mol-ecules, a methyl group is disordered over two sets of sites with a site-occupation factor of 0.661 (16) for the major occupany component. In...
متن کاملA comparative study of the structure–property behavior of highly branched segmented poly(urethane urea) copolymers and their linear analogs
The solid-state structure–property behavior of highly branched segmented poly(urethane urea) (PUU) copolymers and their linear analog was investigated. A limited study of their solution rheological behavior was also undertaken. The linear PUUs were synthesized by the twostep prepolymer method, whereas the oligomeric A2CB3 methodology was utilized to synthesize the highly branched materials. The...
متن کاملPoly(Dimethyl Siloxane) Films in Porous Media
Poly (Dimethyl siloxane) thin films were prepared by solvent evaporation method in porous alumina hosts. The thickness of these layers ranged from multilayer to sub-monolayer. Different NMR methods (FFC relaxometry, transverse relaxation, H Double quantum NMR) were applied to study the dynamics and order in these thin films. We found that dynamic restrictions and order increased with decreasing...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Seikei-Kakou
سال: 2006
ISSN: 0915-4027,1883-7417
DOI: 10.4325/seikeikakou.18.517