Advances in elastomers and rubber elasticity |
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Page 294
The probability that a particular chain is has an end-to-end vector R_ is given by:
= Po(R)exp[-V(R;Rc )/kT]/Q(Rr ) (la) Q(Rc ) = /P(R;Hc)dg (lb) V(R;Rc) is a
potential function which is at a minimum when R = R< . He varies from chain to
chain, ...
The probability that a particular chain is has an end-to-end vector R_ is given by:
= Po(R)exp[-V(R;Rc )/kT]/Q(Rr ) (la) Q(Rc ) = /P(R;Hc)dg (lb) V(R;Rc) is a
potential function which is at a minimum when R = R< . He varies from chain to
chain, ...
Page 381
In terms of material having a two phase structure, the correlation function y(r)
represents the probability that a rod of given length r, will have both its ends in
the same phase. For r = 0, y(0) " 1, and for r = <*,, TM 0. Therefore, such a
function ...
In terms of material having a two phase structure, the correlation function y(r)
represents the probability that a rod of given length r, will have both its ends in
the same phase. For r = 0, y(0) " 1, and for r = <*,, TM 0. Therefore, such a
function ...
Page 397
The strain function depends on the transformations of chain dimensions with
deformation in real networks. According to the model proposed by Flory and
Erman the elements of the molecular deformation tensor A c,an be expressed as
the sum ...
The strain function depends on the transformations of chain dimensions with
deformation in real networks. According to the model proposed by Flory and
Erman the elements of the molecular deformation tensor A c,an be expressed as
the sum ...
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Contents
Introduction to Synthesis of Elastomers | 1 |
Structure and Properties of Tire Rubbers Prepared | 17 |
Polymer and Chain End Structure in Anionic Diene | 37 |
Copyright | |
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affine anionic antioxidant behavior benzene block polymers butadiene calculated catalyst CHDI Chem chemical concentration constant crosslinking crystalline crystallites crystallization curing curves cyclohexane deformation density diene dynamic mechanical effect elongation end block entanglements equation equilibrium experimental fraction function glass transition temperature groups hard segment content hard segment length higher hydrogenated hydrosilylation increase indicated initiator intramolecular reaction isoprene Macromolecules measurements mechanical properties melting temperature microstructure modulus molecular weight molecules monodisperse monomer observed obtained oligomers orientation P.J. Flory PDMS peak phantom network phase Phys polybutadiene polyether polyisoprene polymerisations polymerization polystyrene polyurethane-ureas polyurethanes prepared prepolymer PTMO sample scattering segment length distribution shown in Figure soft segment solvent spectra strain stress stress-strain stretched structure styrene swollen synthesis Table theory thermal thermoplastic thermoplastic elastomers tion toluene trans triblock copolymer uniaxial values vinyl content vulcanizates