1. |
Editorial |
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Macromolecular Theory and Simulations,
Volume 1,
Issue 1,
1992,
Page 1-1
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PDF (63KB)
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ISSN:1022-1344
DOI:10.1002/mats.1992.040010101
出版商:Hüthig&Wepf Verlag
年代:1992
数据来源: WILEY
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2. |
Theory of static scattering from weakly charged copolymers in solution |
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Macromolecular Theory and Simulations,
Volume 1,
Issue 1,
1992,
Page 3-23
Mustapha Benmouna,
Thomas A. Vilgis,
Jeanne François,
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PDF (941KB)
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摘要:
AbstractThe static scattering properties of weakly charged copolymers in solution are investigated. The cases of symmetrical and nonsymmetrical diblocks are considered and various structure factors calculated. The electrostatic interaction is introduced via a combination of the random‐phase approximation and the Debye‐Hückel approximation. Several cases of charge distributions are considered. In particular, diblock copolymers made of neutral and charged monomers and oppositely charged monomers are considered. All the cases deal with systems in the homogeneous disordered phase where no mesophase structures or micelle formations can be obse
ISSN:1022-1344
DOI:10.1002/mats.1992.040010102
出版商:Hüthig&Wepf Verlag
年代:1992
数据来源: WILEY
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3. |
Statics and dynamics of single chains in polymer blends and copolymer melts — results beyond the random phase approximation |
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Macromolecular Theory and Simulations,
Volume 1,
Issue 1,
1992,
Page 25-30
Thomas A. Vilgis,
Mustapha Benmouna,
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PDF (258KB)
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摘要:
AbstractWe present new results on the behaviour of single chains in homo‐and copolymer blends which are beyond the rendom phase approximation (RPA). The radius of gyration of a chain in the blend was found to depend strongly on the interactions as well as the effective diffusion constant of a single chain in the blend or copolymer melt. Note that these results cannot be obtained in the original formulation of the RPA. They are based on the effective Hamiltonian of the chain in the medium. In the equation found for the self diffusion constant of a single chain,Ds, the second term is directly the value of the effective potential at zero wave vector. Thus the measurement ofDswould detect the screened potential atq= 0. Experimental verification of these results is in progres
ISSN:1022-1344
DOI:10.1002/mats.1992.040010103
出版商:Hüthig&Wepf Verlag
年代:1992
数据来源: WILEY
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4. |
Wetting transitions of asymmetric binary polymer mixtures |
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Macromolecular Theory and Simulations,
Volume 1,
Issue 1,
1992,
Page 31-35
Zheng Yu Chen,
Jaan Noolandi,
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PDF (210KB)
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摘要:
AbstractWe examine the effect on surface‐wetting phase transitions in polymer mixtures when the degrees of polymerization of the two components are different. It has been demonstrated by Schmidt and Binder (J. Phys. (Paris)46, 1631 (1985)) that in a symmetric polymer mixture a second‐order wetting transition occurs if the wall‐polymer interactionf(ϕ0) has a negative curvaturef″(ϕ0), where ϕ0is the surface volume fraction of the polymer component preferred by the wall. We found that in an asymmetric mixture this is not necessaril
ISSN:1022-1344
DOI:10.1002/mats.1992.040010104
出版商:Hüthig&Wepf Verlag
年代:1992
数据来源: WILEY
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5. |
A kinetic tree‐like model of non‐linear alternating copolymerization of monomers with non‐equal reactivities of functional groups and substitution effect |
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Macromolecular Theory and Simulations,
Volume 1,
Issue 1,
1992,
Page 37-48
Henryk Galina,
Krzysztof Kaczmarski,
Beata Para,
Bożena Sanecka,
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PDF (520KB)
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摘要:
AbstractA kinetic model is presented that can be used to predict moments of size distribution of polymer species in the system where a tri‐functional monomer with groups of different reactivity (such as glycerol) reacts irreversibly with a bi‐functional monomer with no cycle formation. A Smoluchowski‐like equation is used to follow the time evolution of the size distribution of polymer molecules up to the gel point. The results are confronted with calculations made by using the statistical cascade theory. The two methods of calculations give slightly different results. The reasons for the differences are disc
ISSN:1022-1344
DOI:10.1002/mats.1992.040010105
出版商:Hüthig&Wepf Verlag
年代:1992
数据来源: WILEY
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