ItisagreatpleasureforustopresentacollectionofpapersreadattheToyoichiTanaka MemorialSymposiumonGelsheldon10-12September2008inTokyo. ProfessorToyoichi TanakaofMIThasdevelopedgelscienceafterthediscoveryofvolumephasetransition, but unfortunately he passed away so early in 2000. His friends and co-workers decided to organizeasymposiumcommemoratingthe30thanniversaryforthediscoveryofthevolume phasetransitionin1978. ThesymposiumwasheldinastyleofFaradayDiscussions. FullpaperswritteninJapanese weresentbeforehandtoalltheparticipants, anddiscussionswereactiveafterashort(5min) presentationofeachpaper. SinceJapaneselanguageisverydifferentfromEuropeanl- guages, weJapanesecouldspeakfreelywithoutanyhesitation. Althoughalltheparticipants are good at English as proved by their publication of many papers in English, yet the discussionofdelicatenuancescouldbedonebetterinJapanesethaninEnglish. Afterthesuccessfulsymposium, paperswritteninEnglishtakingintoaccountthedisc- sionsduringthesymposiumwerereviewedbyexpertscientists, andthepaperswererevised accordingly. We hope that this collection of papers is interesting and useful for all the scientistsandengineersworkingintheareaofgelsbothinacademiaandindustry. Finally, wethankallthecontributorsandreviewersfortheirenthusiasticefforts. Summer2009 MasayukiTokita KatsuyoshiNishinari v Contents StructureandFunctionalPropertiesofGels CompetitiveHydrogenBondsandCononsolvencyofPoly(N-isopropylacrylamide)s inMixedSolventsofWater/Methanol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 FumihikoTanaka, TsuyoshiKoga, andFranc oiseM. Winnik RheologicalPropertiesofSolutionsofaPolyampholyticBlockCopolymer. . . . . . . . . . 9 TomomitsuSekitani, KenjiUrayama, ManabuTsuruta, Masahiko Mitsuzuka, andToshikazuTakigawa Helix-CoilTransitionandAssociationBehaviorofWater-SolublePolypeptides HavingHydrophobicAlkylSideChains. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 KatsuhiroInomata, TomokazuTakai, NoriyoshiOhno, YoshiakiYamaji, ErinaYamada, HidekiSugimoto, andEijiNakanishi EffectsofSurfactantsontheLinearRheologyofTelechelic AssociatingPolymers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 TsutomuIndei Time-DependentFlowPropertiesofTransientHydrogelswith TemporalNetworkJunctions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 IsamuKaneda, TsuyoshiKoga, andFumihikoTanaka StressGrowthinTransientPolymerNetworksunderStartup ShearFlow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 TsuyoshiKoga, FumihikoTanaka, andIsamuKaneda Self-assemblingStructuresandSol-GelTransitionofOptically ActiveandRacemic12-HydroxystearicAcidsinOrganicSolvents. . . . . . . . . . . . . . . . 47 HiroyukiTakeno, TomomitsuMochizuki, KazutoYoshiba, ShingoKondo, andToshiakiDobashi TheGelPointandNetworkFormationinthePolymerisation ofanEpoxy-AmineSystemIncludingRingFormation. . . . . . . . . . . . . . . . . . . . . . . . . 55 YutakaTanaka, JohnL. Stanford, andRobert. F. T. Stepto TheEffectiveSurfaceRoughnessScalingoftheGelationSurface PatternFormation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 T. Mizoue, M. Tokita, H. Honjo, H. J. Barraza, andH. Katsuragi DiscontinuousGrowthofOnionStructureUnderShear. . . . . . . . . . . . . . . . . . . . . . . . 69 ShujiFujii vii viii Contents StudyonSelf-AssemblyofTelechelicHydrophobicallyModi? ed Poly(N-isopropylacrylamide)inWater. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 TaisukeFujimoto, EmiYoshimoto, andMasahikoAnnaka SomeThoughtsontheDe? nitionofaGel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 KatsuyoshiNishinari SwellingofGels StructuralTransitionofNon-ionicPoly(acrylamide)Gel. . . . . . . . . . . . . . . . . . . . . . 95 Sada-atsuMukai, HirohisaMiki, VasylGaramus, Regine Willmeit, andMasayukiTokita
Inhaltsverzeichnis
Competitive Hydrogen Bonds and Cononsolvency of Poly(N-isopropylacrylamide)s in Mixed Solvents of Water/Methanol. - Rheological Properties of Solutions of a Polyampholytic Block Copolymer. - Helix-Coil Transition and Association Behavior of Water-Soluble Polypeptides Having Hydrophobic Alkyl Side Chains. - Effects of Surfactants on the Linear Rheology of Telechelic Associating Polymers. - Time-Dependent Flow Properties of Transient Hydrogels with Temporal Network Junctions. - Stress Growth in Transient Polymer Networks under Startup Shear Flow. - Self-assembling Structures and Sol-Gel Transition of Optically Active and Racemic 12-Hydroxystearic Acids in Organic Solvents. - The Gel Point and Network Formation in the Polymerisation of an Epoxy-Amine System Including Ring Formation. - The Effective Surface Roughness Scaling of the Gelation Surface Pattern Formation. - Discontinuous Growth of Onion Structure under Shear. - Study on Self-Assembly of Telechelic Hydrophobically Modified Poly(N-isopropylacrylamide) in Water. - Some Thoughts on The Definition of a Gel. - Structural Transition of Non-ionic Poly(acrylamide) Gel. - Swelling Equilibrium of a Gel in Binary Mixed Solvents. - Revisit to swelling kinetics of gels. - Effect of Residual Swelling Solvent on Nanopore Formation in Replication of Swollen Hydrogel Network. - Swelling Properties of Physically Cross-linked PVA Gels Prepared by a Cast-drying Method. - Influence of Heating Temperature on Cooking Curve of Rice. - Effects of Thickness and Curvature on the Adhesion Properties of Cylindrical Soft Materials by a Point Contact Method. - Electrophoresis of Dyes and Proteins in Poly(Acrylamide) Gel Containing Immobilized Bilayer Membranes. - An Application of Microcapsules Having Enzyme-degradable Gel Membrane to Cell Culture. - Development of a Novel Hydrogel to Prevent Bacterial Infectious Diseases. - Effect of Particles Alignment on Giant Reduction in Dynamic Modulus of Hydrogels Containing Needle-Shaped Magnetic Particles. - Molecular Diffusion in Polysaccharide Gel Systems as Observed by NMR. - Chain Release Behavior of Gellan Gels. - Gel Formation of Recombinant Fibrinogen Lacking ? C Termini. - Dynamic Light Scattering Study of Pig Vitreous Body. - The Relationship Between the Changes in Local Stiffness of Chicken Myofibril and the Tenderness of Muscle During Postmortem Aging.
