-
Article
Structural Development During Thermal Fractionation of Polyethylenes
In this study, the stepwise isothermal crystallization or thermal fractionation of Ziegler—Natta and metallocene based polyethylenes (ZN-PE and m-PE) with two kinds of branch lengths (ethyl and hexyl) and bran...
-
Chapter
Physicochemical approaches to the measurement of molecular anisotropy
The measurement of molecular orientation and its specification in some quantitative form are essential to a full understanding of the relationships between a variety of properties (mechanical, dielectric, etc....
-
Article
Director dynamics of uniformly aligned nematic liquid crystals in transient shear flow
We have developed a modular rheo-optical apparatus to study the flow properties of liquid crystals. Its main components are shearing device, strong magnetic field, and optical microscope. We performed experime...
-
Article
Small-Angle Scattering Investigations of Crystalline Blend Morphologies of Poly(ε-Caprolactone) (PCL)/Polycarbonate (PC) Blends
Crystalline morphologies of poly(ε-caprolactone) (PCL) and deuterated polycarbonate (PC) blends in both the semicrystalline/amorphous state and semicrystalline/semicrystalline state were probed by small-angle ...
-
Article
The Volume Fraction Profile of Terminally Adsorbed Polymers
We have used neutron reflectivity to measure the concentration profile of carboxylic acid-terminated polystyrene at the liquid/solid interface. Two isotopic systems were studied: (1) deuterated polystyrene (DP...
-
Article
X-Ray Reflectivity and Fluorescence Measurements From Polystyrene-Co-Bromostyrene/Polystyrene Interfaces
X-ray fluorescence using synchrotron radiation at glancing angles of incidence was used to measure interface widths for the highly immiscible polymer blend system polystyrene/polybromostyrene (PS/PBrxS, with brom...
-
Chapter
The Scattering of Light by Swollen Networks
Swollen networks scatter more light than solutions of linear molecules of the same concentration. This occurs because of the concentration fluctuations associated with the variation of the local degree of swel...
-
Article
Kinetics of phase transition of a liquid crystalline polymer
The kinetics of phase transition from the isotropic state to the nematic mesophase of a main-chain, thermotropic liquid crystalline polymer has been studied by DSC and optical microscopy. Avrami-type analysis ...
-
Article
Interaction between components of polymer blends by scattering
The Flory interaction coefficient χAB of binary polymer blends of high concentration may be determined from the study of light, x-ray, or neutron scattering at q=0. Neutron scattering measurements are particularl...
-
Article
Lichtstreuung einer Ansammlung von abgestumpften und ungeordneten Sphärolithen
-
Article
Untersuchung der Doppelbrechung der spannungsinduzierten Kristallisation von Kautschuken
-
Chapter
Rheoptical Studies of Blends of Poly(Styrene-B-Butadiene-B-Styrene) and Polystyrene
Polyblends of poly(styrene-b-butadiene-b-styrene) and polystyrene were cast from a tetrahydrofuran/methyl ehtyl ketone mixture using a spin caster. These samples were found to undergo a “strain-induced plastic...
-
Chapter
Physico-Chemical Approaches to the Measurement of Anisotropy
The measurement of optical anisotropy is one of the simplest and most exploited methods of studying orientation in polymers. It depends on the fact that a given material has associated with it unique optical p...
-
Chapter
Depolarized Light Scattering from Swollen-Filled Rubber
When rubber containing glass sphere filler particles swells, the swelling is inhomogeneous in that tangential strain is not permitted at the surface of the filler particle providing the rubber remains attached...
