Skip to main content

10 Result(s)

within J. D. Menczel Remove this filter

and

  1. No Access

    Article

    How did we find the rigid amorphous phase?

    The first experimental evidence of the existence of the rigid amorphous phase was reported by Menczel and Wunderlich [1]: when trying to clarify the glass transition characteristics of the first main chain liq...

    J. D. Menczel, M. Jaffe in Journal of Thermal Analysis and Calorimetry (2007)

  2. No Access

    Article

    Thermal Measurements on Poly[2,2'-(m-phenylene)-5,5'-bibenzimidazole] Fibers

    Fibers drawn form poly[2,2'-(m-phenylene)-5,5'-bibenzimidazole] (PBI) were studied by DSC and DMA. PBI is a high temperature polymer T g is between 387 and450°C depending on the measurement technique used. The as...

    J. D. Menczel in Journal of Thermal Analysis and Calorimetry (2000)

  3. No Access

    Article

    Crystal Perfection of Poly(p-phenylene Sulfide) During Cooling Using Temperature-Modulated DSC

    Temperature-modulated DSC (TMDSC) was used to enhance the perfection of crystals of different poly(p-phenylene sulfide) samples formed during slow cooling from the melt. The sample preparation was made with modul...

    J. D. Menczel in Journal of Thermal Analysis and Calorimetry (1999)

  4. No Access

    Article

    Molecular Weight Effects on the Reorganization of Poly(Vinylidene Fluoride), Polyamide 12, and Poly(p-Phenylene Sulfide)

    Although reorganization in metastable polymeric crystals has been recognized for over 30 years, the effect of molecular weight on the reorganization process has not been widely investigated. In this work three...

    L. Judovits, J. D. Menczel, A.-G. Leray in Journal of Thermal Analysis and Calorimetry (1998)

  5. No Access

    Article

    Literature Status on Temperature-Modulated Differential Scanning Calorimetry

    J. D. Menczel, L. Judovits in Journal of Thermal Analysis and Calorimetry (1998)

  6. No Access

    Article

    Thermal analysis of Vectran® fibers and films

    Vectra® liquid crystalline polymers (LCP's) were introduced as commercial products in the mid-1980's. The first of these (Vectra A130) was a wholly aromatic thermotropic copolyester ofp-hydroxybenzoic acid and 6-...

    J. D. Menczel, G. L. Collins, S. K. Saw in Journal of thermal analysis (1997)

  7. No Access

    Article

    Temperature calibration of heat flux DSC's on cooling

    The temperature calibration of a TA Instruments 3200-2920 DSC has been performed on cooling using the isotropic → nematic, isotropic → cholesteric and other liquid crystal → liquid crystal transitions of therm...

    J. D. Menczel in Journal of thermal analysis (1997)

  8. No Access

    Article

    Thermal analysis of poly(2-methylpentamethylene terephthalamide)

    Poly(2-methylpentamethylene terephthalamide) (Nylon M5T) is a new high temperature aromatic polyamide developed by Hoechst Celanese. In this paper thermal properties of Nylon M5T chips, as well as as-spun and ...

    J. D. Menczel, M. Jaffe, C. K. Saw, T. P. Bruno in Journal of thermal analysis (1996)

  9. No Access

    Article

    Phase behavior in HIQ40 liquid crystalline polymers

    The thermotropic copolyester consisting of 40 mol%p-hydroxybenzoic acid and 30 mol% isophthalic acid/30 mol% hydroquinone (HIQ40), prepared by two different synthetic routes (“acidolysis” or “phenylester”) was st...

    J. D. Menczel, M. Jaffe, C. K. Saw in Journal of thermal analysis (1996)

  10. No Access

    Article

    Temperature calibration of an electrical compensation DSC on cooling using thermally stable high purity liquid crystals

    Temperature calibration of DSCs is usually carried out on heating. In order to accurately control the temperature during cooling experiments, the calibration has to be carried out on cooling. Therefore, three ...

    J. D. Menczel, T. M. Leslie in Journal of Thermal Analysis (1993)