Results 181 to 190 of about 2,342 (214)

The heat of fusion of polybutene‐1

Journal of Polymer Science Part B: Polymer Physics, 1986
AbstractThrough x‐ray diffraction, the changes in the unit‐cell parameters of crystal forms I and II of polybutene‐1 were followed from room temperature to the melting point. These data were combined with the results of other measurements to computer the heats and entropies of fusion by use of the Clapeyron equation.
Howard W. Starkweather, Glover A. Jones
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Deformation of polybutene‐1 spherulites

Journal of Polymer Science Part A-2: Polymer Physics, 1967
AbstractThe deformation of fresh and aged polybutene‐1 spherulitic samples has been investigated by microscopic observation, interferometry, studying macroscopic and spherulitic birefringence changes, and study of light‐scattering patterns. The spherulite deformation is not affine, the microscopic deformation ratio being less than the macroscopic ...
Rena Yang, Richard S. Stein
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Zur Toxikologie von Polybuten-(1)

F�hner-Weilands Sammlung von Vergiftungsf�llen Archiv f�r Toxikologie, 1968
Unter den Bedingungen eines halbjahrigen Futterversuchs (1% und 10% Gehalt) an Ratten fand sich kein Anhalt fur eine gesundheitliche Bedenklichkeit des Kunststoffs Polybuten-(1).
Arnold Loeser, Gerhard Bornmann
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NOTE ON PHYTOTOXICITY AND PERSISTENCE OF POLYBUTENES

Canadian Journal of Plant Science, 1963
not available
K. Williams, R. S. Downing
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Crystallization and Transformation of Polybutene‐1

Journal of Macromolecular Science, Part B, 2004
Abstract The isothermal crystallization and phase II → I transformation of bulk polybutene‐1 at various temperatures have been characterized by x‐ray diffraction. The crystallization rate can be increased or decreased by the addition of various solids, with sodium salicylate and talc, e.g., increasing the rate by >100% and, unexpectedly, decreasing the
M. Kaszonyiova, Phillip H. Geil, F. Rybnikar   +2 more
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Spherulite deformation in polybutene‐1

Journal of Polymer Science Part B: Polymer Letters, 1963
Abstract : The postulate of spherulite deformation has now been verified by direct microscopic observation. Films of polybutene-1, about 1 mil thickness, (made from samples obtained through the courtesy of Phillips Petroleum Company) were prepared by molding in a laboratory press at 150 C for 15 min at 2,000 psi pressure and then lowering the ...
Marion B. Rhodes, Richard S. Stein, K. Sasaguri   +2 more
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Phase Transitions in Isotactic Polybutene-1

Journal of Macromolecular Science, Part B, 2019
AbstractThe possibilities to influence the 4 major phase transitions of isotactic polybutene – 1 (iPB-1) and their transformation rate are described.
Kaszonyiová, Martina, Rybnikář, František, Geil, Phillip H.   +2 more
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Polybutenes in Orchard Pest Control

The Canadian Entomologist, 1962
In British Columbia the control of phytophagous mites, especially the European red mite, Panonychus ulmi (Koch), and the McDaniel spider mite, Tetranychus mcdanieli McG., is becoming increasingly difficult, mainly because of the mites' ability to develop resistance to most acaricides in a relatively short time (3).
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Growth morphology of isotactic polybutene-1

European Polymer Journal, 1973
Abstract Isotactic polybutene-1 has been crystallized from solution by the film formation method. Well-defined single crystals have been grown from solutions of the polymer in amyl acetate and its mixtures with n-butanol in all the three modifications by varying the concentration and crystallization temperature.
K.S. Sastry, Ravji D. Patel
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Effect of polymorphism of isotactic polybutene‐1 on peel behavior of polyethylene/polybutene‐1 peel systems

Journal of Applied Polymer Science, 2007
AbstractThe effect of polymorphism of isotactic polybutene‐1 (iPB‐1) on the peel behavior of the specific peel system low‐density polyethylene/polybutene‐1 (LDPE/iPB‐1) was investigated using wide‐angle X‐ray scattering, calorimetry, and the T‐peel test.
Michael Nase, René Androsch, Hans Joachim Baumann, Wolfgang Grellmann, Beate Langer   +4 more
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