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Structure and Properties of Ionomers

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概要 Ionomers, that is polymers containing a low concentration of charged units along the chain, have been the subject of increasing interest during the past twenty years. The presence of ionic groups in t...he poly mer changes some of its properties dramatically. Increases in the modu lus and the viscosity of several orders of magnitude have been observed, and changes in the glass transition of hundreds of degrees are possible. In addition, diffusion coefficients can be modified drastically. These changes are due primarily to the presence of reversible ionic cross links in these materials. Because of the low dielectric constant of most organic polymers, the ions or ionic dipoles tend to aggregate ; this aggregation process, however, is limited, because the ionic groups are covalently bonded to the organic chain. Host of the fundamental research done on these materials has been devoted to a determination of the extent of association, the structure of the aggregates, the limi ting factors, and the correlations between molecular and supermolecular structure and the resul ting properties.続きを見る
目次 Available Ionomers
A review and critical analysis of theories of polar/ nonpolar aggregation in ionomers
Simple considerations on the morphology of ionomers
Statistical mechanics of ion-pair association in ionomers
The EXAFS spectroscopy applied to the ionic aggregates of HTP
EXAFS analysis of ion containing polymers
Chemistry in ionomers
Chromium (III) and cobalt (II) aquo complexes in PFSA (nafion) Ionomer films
EPR of Mn2+ , Fe3+ and Cu2+ in ionomers
Magnetization and susceptibility of ion-containing polymers
Electronic spectra and photophysical properties of ions as probes for the properties and structure of perfluorinated ionomer membranes
Structural studies of ionomers by infrared spectroscopy
An NMR study of a,?-dicarboxylatopolybutadiene
Structure of ionomers: use and abuse of SAXS
Small angle neutron scattering studies of ionomers in the bulk state
Labelling and misinterpretation
Roundtable discussion concerning the relations between the results obtained from local and macroscopic studies
Viscoelastic behavior of ionomers in bulk and solution
Dielectric and related molecular processes in ion containing polymers
Spin-glasses versus glassy glasses
Glass transitions in multicomponent systems
A review of the glass transition in surlyns and polypentenamer ionomers
Ionic elastomers
'Glass transitions' in ionomer membranes
Glass transition temperatures in styrene ionomers and their blends
Glass transition behavior of carboxylato-telechelic polymers as models of the related ionomers
Round table discussion on glass transition and dynamic mechanical properties of ionomers
Water absorption studies of carboxilic and sulfonic ionomers: correlations with their microstructure
Effect of solvents on structure and properties of ionomers
Relationships between polymer structure and ion diffusion in perfluorinated ionomer membranes
Review: Ionomer solution behavior
Gelation and phase separation of solutions of halato telechelic polymers
Gelation theory for ionomer solutions
Gerneral discussion following the session on solutions and gels
Ionomer applications including ionic elastomers and polymer/ fluid additives
Ionomers for adhesives, antistatics, magnetic recording, and imaging systems
Committee report on solved and unsolved problems in ionomer research
Committee report on the future applications of ionomers
Committee report on problems of synthesis of ion-containing polymers
Committee report on ionomer characterization
The microphase separation in polyurethane ionomers
Structure and molecular motion in complex salts of ethylene-methacrylic acid copolymer with 1,3-bis-amino- methylcyclohexane and/or zinc (II)
Conductivity and thermally stimulated processes in ionomers based on SIS block copolymers
A study of water in perfluorosulphonate membranes using near infrared spectroscopy
The sodium salts of sulfonated polyaryletheretherketone (PEEK): preparation and characterization
Effects of inter- or intra-molecular interactions on dynamics of ionomers in dilutes solutions
Solution properties of polystyrene-based ionomers in polar and low-polarity solvents
Polystyrene zwitter ionomers
Sulfonatopropylbetain random copolymers: zwitterionic analogues of ionomers
Ion density as a structure-determining factor in ionenes
Dilute solution properties of ionomers obtained from EUDRAGIT-S
Dynamic mechanical properties of concentrated solutions of a polystyrene ionomer in a styrene oligomer
Ionomers from sulfonated polynorbornene.
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登録日 2020.06.27
更新日 2020.06.28