Crystallization of polyethylene terephthalate from the glassy amorphous state.
Morphology of polyethylene terephthalate crystallized from glassy amorphous state by annealing, noting spherulite growth
Geil, P. H.↗
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Strain-induced crystallization of polyethylene terephthalate.
Strain induced crystallization of polyethylene terephthalate by reorganization of paracrystalline ball-like structures present in amorphous material
Geil, P. H.↗
Characterization of biaxially drawn polyethylene terephthalate by polarized infrared spectroscopy.
Biaxially drawn polyethylene terephthalate films structural changes, noting alignment and crystallinity using polarized IR spectroscopy
Cornell, S. W.↗
Heat of fusion of polyethylene.
Crystalline polyethylene heat of fusion using scanning calorimeter
Cormier, C. M.↗
The desorption of ethane-butane mixtures from polyethylene.
Ethane-butane desorption from polyethylene, determining diffusion coefficients and solubility constants temperature dependences
Robeson, L. M.↗
Density and heat of fusion of folded-chain polyethylene crystals.
Density determination by flotation method for solution grown crystals of polyethylene, noting specific volume-heat of fusion relationships
Hamada, F.↗
Morphology of melt-crystallized polyethylene- terephthalate.
Melt crystallized polyethylene terephthalate examined by polarized light microscopy, electron microscopy and X ray scattering
Hansen, D.↗
Regular crystallographic chain-folding in polyethylene crystals
Regular crystallographic chain folding in polyethylene crystals
Lindenmeyer, P. H.↗
Density and heat of fusion of folded chain polyethylene crystals
Density and heat of fusion of folded chain polyethylene crystals
Hamada, F.↗
An investigation of the basic properties of irradiated polyethylene memory materials
Properties of irradiated polyethylene memory materials
Greer, D.↗
Extended-chain crystals. V - Thermal analysis and electron microscopy of the melting process in polyethylene
Polyethylene extended chain crystals melting process via electron microscopy and differential thermal analysis
Melillo, L.↗
Evaluation of linear polyethylene and fiber glass reinforced epoxy for use as irradiation capsules
Irradiation effects on polyethylene and fiber glass reinforced epoxy capsules
Mittendorf, R. J.↗
High velocity impact tests conducted with polyethylene terephthalate projectiles and flexible composite wall panels
High velocity impact tests conducted with polyethylene terephthalate projectiles and flexible composite wall panels
Williams, J. G.↗
Polyethylene balloon fabrication and specifications Final report
Polyethylene balloon fabrication and flight test time/altitude data
Source record↗
Fibrous structure formation in cold-drawing of polyethylene
Spherulitic linear polyethylene rod cold drawing, observing fibrous structure formation by light and electron microscopy and X ray scattering
Hansen, D.↗
Retraction of cold drawn polyethylene: the influence of lamellar thickeness and density
The role of crystal morphology in the retraction of oriented, linear polyethylene was studied utilizing samples crystallized under conditions controlled to vary, separately, lamellar crystal thickness and density. Samples were oriented in a simple shear deformation to a strain of 4.0 prior to measuring retraction tendency in creep and relaxation type tests. Characterizations of specimens were made using wide and small angle X-ray techniques. The specific morphological variations were chosen to test the hypothesis that a long range elastic restoring force can originate in conjunction with deformation of lamellar crystals and the consequent increase in lamellar crystal surface area and surface free energy. The results support this hypothesis.
Falender, J. R.↗
Irradiation of linear polyethylene - Partitioning between sol and gel.
Molecular weight fractions of linear polyethylene were irradiated at 133 C, in the completely molten and highly crystalline states, for the purpose of assessing the importance of chain-scission processes and establishing the critical conditions for gelation. The partitioning between sol and gel in either state was found to adhere to the theory for the intermolecular cross-linking of monodisperse species for dosages just beyond the gel point. Deviations from theory occurred as the dosage was increased further. It was concluded that main-chain scission, at these temperatures, is not a significant process. High molecular weight samples in the completely molten state obeyed the Flory-Stockmayer condition for critical gelation.
Rijke, A. M.↗
Retraction of cold-drawn polyethylene - Influence of lamellar thickness and density.
The role of crystal morphology in the retraction of oriented linear polyethylene was studied utilizing samples crystallized under conditions controlled to vary, separately, lamellar crystal thickness and density. Samples were oriented in a simple shear deformation to a strain of 4.0 prior to measuring retraction tendency in creep- and relaxation-type tests. Characterizations of specimens were made using wide- and small-angle x-ray techniques. The specific morphological variations were chosen to test the hypothesis that a long-range elastic restoring force can originate in conjunction with deformation of lamellar crystals and the consequent increase in lamellar crystal surface area and surface free energy. The results support this hypothesis.
Falender, J. R.↗