Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Herman L. Wagner"'
Publikováno v:
J Res Natl Bur Stand A Phys Chem
The National Bureau of Standards has issued a linear polyethylene standard reference material, SRM 1475. In this report a general description of the sample is given, and the characterization work described in the subsequent reports is outlined. Some
Autor:
Peter H Verdier, Herman L. Wagner
Publikováno v:
J Res Natl Bur Stand (1977)
Linear polyethylene Standard Reference Materials SRM 1482, 1483, and 1484 are certified for number-average molecular weight M(n). In this paper the experimental procedures employed for the determination of M(n) for these materials by membrane osmomet
Autor:
Peter H Verdier, Herman L. Wagner
Publikováno v:
J Res Natl Bur Stand (1977)
Linear polyethylene Standard Reference Materials SRM 1482, 1483, and 1484 are certified for limiting viscosity number in 1,2,4-trichlorobenzene and 1-chloronaphthalene at 130 °C. In this paper the experimental procedures employed for the determinati
Autor:
Herman L. Wagner, Frank L. McCrackin
Publikováno v:
Journal of Applied Polymer Science. 21:2833-2845
A method of determining the distribution of branching in a polymer is developed employing limiting viscosity numbers (intrinsic viscosity), gel permeation chromatography (GPC), and absolute molecular weight determinations of fractions of the whole po
Autor:
Herman L. Wagner
Publikováno v:
Journal of Physical and Chemical Reference Data. 16:165-173
In this third review of a series, the literature values for the viscosity‐molecular weight relationship (Mark–Houwink–Sakurada) for poly(methyl methacrylate) have been critically evaluated. Although most of the studies have been concerned with
Autor:
Herman L. Wagner
Publikováno v:
Journal of Physical and Chemical Reference Data. 14:611-617
In this review, the parameters K and α found in the literature for the Mark–Houwink–Sakurada equation relating viscosity to molecular weight have been critically evaluated for linear polyethylene, and values have been recommended for six commonl
Autor:
Frank L. McCrackin, Herman L. Wagner
Publikováno v:
Macromolecules. 13:685-690
Autor:
J. G. Dillon, Herman L. Wagner
Publikováno v:
Journal of Applied Polymer Science. 36:567-582
To obtain accurate measurements of the limiting viscosity number (LVN) or the intrinsic viscosity [η] of solutions of ultrahigh molecular weight polyethylene (UHMWPE), a low shear floating-rotor viscometer of the Zimm-Crothers type was constructed t
Autor:
Herman L. Wagner
Publikováno v:
Journal of Physical and Chemical Reference Data. 14:1101-1106
In this review, the second in a series, the viscosity–molecular weight (Mark–Houwink–Sakurada) relationships have been critically evaluated for atactic polystyrene for a variety of solvents often used for viscosity measurements. These are benze
Autor:
Herman L. Wagner, C. A. J. Hoeve
Publikováno v:
Journal of Polymer Science Part A-2: Polymer Physics. 11:1189-1200