By Paul S. Russo
content material: A standpoint on reversible gels and comparable structures / Paul S. Russo --
Viscoelastic habit of extremely excessive molecular weight polyethylene pseudogels / B. Chung and A.E. Zachariades --
Dynamic gentle scattering and brief electrical birefringence research of poly(vinyl chloride) microgels / S.J. Candau, Y. Dormoy, E. Hirsch, P.H. Mutin, and J.M. Guenet --
focus dependence of the polymer diffusion coefficient / Wender Wan and Scott L. Whittenburg --
results of aggregation and solvent caliber at the viscosity of semidilute poly(vinylbutyral) recommendations / C.W. Paul and P.M. Cotts --
Reversible polymer complexes stabilized via hydrogen bonds / Ilias Iliopoulos, Roland Audebert, and Claude Quivoron --
organization and gelation of polystyrenes through terminal sulfonate teams / Martin Möller, Jürgen Omeis, and Elke Mühleisen --
Solvent mobility in atactic polystyrene-toluene structures / Frank D. Blum and Byaporn naNagara --
actual gelation of a steroid-cyclohexane process : kinetic phenomenological strategy / P. Terech --
Nematic suggestions of rodlike polymers : mild scattering from nematic strategies with advanced texture and part separation in negative solvents / Kazunori Se and G.C. Berry --
Gelation of poly([gamma]-benzyl-[alpha], L-glutamate) / Paul S. Russo, Paul Magestro, and Wilmer G. Miller --
constitution formation and section adjustments in options of a inflexible polymer / Yachin Cohen, Herbert H. Frost, and Edwin L. Thomas --
Ordering and gelation in DNA recommendations / Victor A. Bloomfield --
Thermally reversible gelation of the gelatin-water process / Madeleine Djabourov and Jacques Leblond --
In vitro polymerization of complicated cytoplasmic gels / Ralph Nossal --
Thermally reversible hydrogels : swelling features and actions of copoly(N-isopropylacrylamide-acrylamide) gels containing immobilized asparaginase / Liang Chang Dong and Allan S. Hoffman --
N-isopropylacrylamide and N-acryloxysuccinimide copolymer : a thermally reversible, water-soluble, activated polymer for protein conjugation / Carol-Ann Cole, Sigrid M. Schreiner, John H. Priest, Nobuo Monji, and Allan S. Hoffman --
decrease serious resolution temperatures of aqueous copolymers of N-isopropylacrylamide and different N-substituted acrylamides / John H. Priest, Sheryl L. Murray, R. John Nelson, and Allan S. Hoffman --
Polymer community reports utilizing paramagnetic probes : Cu(II) in cross-linked polyacrylamide gels / Gary C. Rex and Shulamith Schlick.
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Extra resources for Reversible Polymeric Gels and Related Systems
As seen i n F i g . 5 upon increasing temperature, the normalized f i r s t cumulant increases and the anomalous increase i n the low Κ range appears. Again, i t must be noticed that the extrapolation of <Γ>/2Κ to zero Κ from the high Κ range coïncides with the value of D calculated from transient e l e c t r i c birefringence. 2 3 3 2 2 Q 3 2 3 Q 2 3 2 5 2 Q DISCUSSION The r e s u l t s presented above show that the structure of the aggregates formed by the quenching of PVC solutions depends on the s t a r t i n g concentration.
The r a t e of d i f f u s i o n depends o n the c o n c e n t r a t i o n o f the polymer, the tempera t u r e , the p o l y m e r - s o l v e n t i n t e r a c t i o n and t h e c h a r a c t e r i s t i c l e n g t h a s s o c i a t e d w i t h the experiment. To u n d e r s t a n d t h e concept of t h e c h a r a c t e r i s t i c l e n g t h of the measurement c o n s i d e r a t y p i c a l q u a s i e l a s t i c l i g h t s c a t t e r i n g (QELS) experiment. The i n t e n s i t y o f t h e l i g h t s c a t t e r e d by t h e polymer i s a n a l y z e d as a f u n c t i o n of a n g l e between the i n c i d e n t l a s e r beam and the s c a t t e r e d d i r e c t i o n w h i c h i s d e t e r m i n e d by two p i n h o l e s .
Sedlacek, B. In Physical Optics of Dynamic Phenomena and Processes in Macromolecular Systems; Sedlacek, B . , E d . ; W. 353. G. Scaling Concepts in Polymer Physics; Cornell Univ. ), 1979. ; Van Megen, W. J. Chem. Phys. 1984, 80, 3513. RECEIVED January 24, 1987 Chapter 4 Concentration Dependence of the Polymer Diffusion Coefficient 1 Wender Wan and Scott L . ch004 Department of Chemistry, University of New Orleans, New Orleans, LA 70148 A theoretical expression for the concentration dependence of the polymer diffusion coefficient is derived.