Segmental Orientation in Deformed Networks. 2. Molecular Theory for Biaxial Deformation
نویسندگان
چکیده
منابع مشابه
Molecular Orientation in Deformed Bimodal Networks. 2. Fourier Transform Infrared Measurements on Poly(dimethylsi1oxane) Networks and Comparison with Theory
Results of segmental orientation in uniaxially stretched bimodal poly(dimethylsi1oxane) networks are reported. Measurements are carried out by Fourier transform infrared dichroism spectroscopy. Bimodal networks were formed by tetrafunctionally end-linking low molecular weight (M, = 5600) deuterated chains with high molecular weight (M, = 20000) hydrogenated chains. Independent measurements of s...
متن کاملPreferred orientation in experimentally deformed stishovite: implications for deformation mechanisms
Stishovite is a polymorph of SiO2 present in the mantle, making its deformation properties relevant to Earth science. Stishovite was first produced experimentally (Stishov and Popova 1961) and found to have a rutile structure (space group P42/mnm, Stishov and Belov 1962; Sinclair and Ringwood 1978; Ross et al. 1990) with its silicon in octahedral rather than tetrahedral coordination, as is char...
متن کاملEffects of Chain Structure and Network Constitution on Segmental Orientation in Deformed Amorphous Networks
Segmental orientation in deformed networks is analyzed in terms of configurational properties of constituent chains and of the network structure. Configurational evaluation by using the rotational isomeric state approximation with the polyethylene chain as an example shows that orientation depends strongly on (i) the direction of the investigated label relative to a chain bond, (ii) chain lengt...
متن کاملRole of Structural Heterogeneities on Segmental Orientation in Deformed Chains: Application to Alternating Copolymers
Effects of intrinsic structural and conformational properties on segmental orientation in uniaxially deformed copolymers are considered. Depedence of segmental orientation on equilibrium values of bond angles, torsional states, and probability distribution of rotameric states is studied. Calculations are carried out for chains with independent as well as pairwise interdependent rotameric states...
متن کاملGraphene flakes under controlled biaxial deformation
Thin membranes, such as monolayer graphene of monoatomic thickness, are bound to exhibit lateral buckling under uniaxial tensile loading that impairs its mechanical behaviour. In this work, we have developed an experimental device to subject 2D materials to controlled equibiaxial strain on supported beams that can be flexed up or down to subject the material to either compression or tension, re...
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: Macromolecules
سال: 1995
ISSN: 0024-9297,1520-5835
DOI: 10.1021/ma00106a024