Zobrazeno 1 - 10
of 25
pro vyhledávání: '"John H. Southern"'
Publikováno v:
Textile Research Journal. 64:633-647
Further work on bulk-related "optical" carpet streaks is reported here, focusing on their instrumental characterization. Texturing process conditions have been adjusted to create bulk variation in both commercial staple and bulk-continuous-filament (
Publikováno v:
Textile Research Journal. 62:437-444
Increased molecular weight and branching agents are used in melt spinning partially oriented nylon 66. The fiber solidifies more rapidly during spinning and has larger crystallites and increased elongation-to-break versus conventional PON, consistent
Autor:
R.W. Miller, John H. Southern
Publikováno v:
Textile Research Journal. 61:61-70
Texturing conditions were systematically varied in a factorial experiment, and the resulting yams characterized for crimp, relative dyeability, and propensity to form streaks in two-ply saxony carpets. The streaks were highly correlated with crimp ra
Publikováno v:
Journal of Applied Polymer Science. 47:355-371
Publikováno v:
Textile Research Journal. 53:670-677
Polyester structure and properties are examined as a function of spinning and texturing processes. Spun fiber tensile and shrinkage properties are related to amorphous orientation and crystallinity. Particularly notable are the observations of textur
Autor:
John H. Southern, W. E. Sprenkle
Publikováno v:
Journal of Applied Polymer Science. 26:2229-2238
Thermal optical analysis (TOA) is employed to study the solubilization of organic flame-retardant additives in high-impact polystyrene. The TOA approach (1) indicates the minimum temperature at which solubilization will occur; (2) yields information
Publikováno v:
Textile Research Journal. 51:97-100
Nylon 6,6 amorphous and crystalline orientation and content data are reported herein for a fiber series produced by varying the degree of stretch in conventional spinning and drawing operations. Tensile elongation and tenacity are correlated exponent
Publikováno v:
Textile Research Journal. 50:411-416
Biconstituent melt-flow through a porous unit, known as the Interface Mixer Insert, is used to achieve adhesion within sheath/core fibers spun from two incompatible polymers, as exemplified herein by nylon and polyester. Sheath splitting and void for
Autor:
John H. Southern, Robert L. Kruse
Publikováno v:
Journal of Rheology. 24:755-763
The viscosities and primary normal stress coefficients are presented for well characterized, rubber‐modified polystyrene as a function of shear rate, temperature, rubber phase volume fraction, and molecular weight. From these data, melt relaxation
Publikováno v:
Polymer Engineering and Science. 15:213-218
The general properties of a novel process for producing high modulus polyolefins are discussed. The technique is an extrusion drawing involving a crystal-crystal transformation. The principal tests have been made on polyethylene and the guidelines ha