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  • DSC  (11)
  • Springer  (11)
  • American Association for the Advancement of Science
  • American Institute of Physics (AIP)
  • American Physical Society
  • American Society of Hematology
  • Annual Reviews
  • Institute of Physics
  • International Union of Crystallography
  • 2000-2004  (11)
  • 1955-1959
  • 1945-1949
Collection
Keywords
Publisher
  • Springer  (11)
  • American Association for the Advancement of Science
  • American Institute of Physics (AIP)
  • American Physical Society
  • American Society of Hematology
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Applications of Successive Self-Nucleation and Annealing (SSA) to Polymer Characterization (2000)
    Springer
    Journal of thermal analysis and calorimetry 59 (2000), S. 451-470 
    Details
    ISSN: 1572-8943
    Keywords: annealing ; DSC ; self-nucleation ; SSA ; thermal fractionation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A new technique to thermally fractionate polymers using DSC has been recently developed in our laboratory. The applications of the novel successive self-nucleation and annealing (SSA) technique to characterize polyolefins with very dissimilar molecular structures are presented as well as the optimum conditions to thermally fractionate any suitable polymer sample with SSA. For ethylene/α-olefin copolymers, the SSA technique can give information on the distribution of short chain branching and lamellar thickness. In the case of functionalized polyolefins, detailed examinations of SSA results can help to establish possible insertion sites of grafted molecules. The application of the technique to characterize crosslinked polyethylene and crystallizable blocks within ABC triblock copolymers is also presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010137408023
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  • 2
    Electronic Resource
    Electronic Resource
    Thermal Analysis Characterization of a Commercial Thermoplastic/Thermoset Adhesive (2000)
    Springer
    Journal of thermal analysis and calorimetry 59 (2000), S. 559-570 
    Details
    ISSN: 1572-8943
    Keywords: adhesive ; composition analysis ; curing kinetics ; DMA ; DSC ; TGA ; thermal cure ; thermoplastic/thermoset blend
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract DSC, TGA and DMA thermal analysis techniques are used to characterize a complex adhesive blend. The chemical and thermomechanical property development shown to follow a two-stage process. Beneficial synergy between these analysis tools is demonstrated in this study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010166230313
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  • 3
    Electronic Resource
    Electronic Resource
    Anomalies of Glass Transition: Manifestation in fullerene core polystyrene stars (2000)
    Springer
    Journal of thermal analysis and calorimetry 59 (2000), S. 23-31 
    Details
    ISSN: 1572-8943
    Keywords: DSC ; fullerene ; glass transition ; star-like polystyrene ; segmental dynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Segmental dynamics around Tg in the 4- and 6-arm fullerene (C60) core star-like polystyrenes with different preset arm lengths was studied by DSC as compared to that in the linear PS and PS/C60 blend. The ‘anomalies’ in glass transition behavior were found for the stars including both suppression and facilitation of segmental motion, and pronounced dynamic heterogeneity within a transition range. The results are interpreted in terms of breakdown of intermolecular cooperativity of segmental motions and PS-C60 interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010163307598
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis And Kinetic Analysis of Poly(2,2'-dymethoxy-4,4'-biphenylenevinylene. A novel conducting polymer (2000)
    Springer
    Journal of thermal analysis and calorimetry 59 (2000), S. 675-680 
    Details
    ISSN: 1572-8943
    Keywords: conducting polymer ; DSC ; kinetic analysis ; PPV ; TG
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The title polymer was obtained electrochemically by the reduction of 4,4'-bis(dibromomethyl)-2,2'-dimethoxybiphenyl under very smooth conditions. The DSC and TG/DTG curves registered at four different heating rates showed that the polymer is stable in air up to 150°C, where smooth degradation starts. Above 300°C, decomposition is fast and exothermic (ΔH= –323 J g–1) . The activation energy (116±4 kJ mol–1 ) was determined by Ozawa's method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010133116243
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  • 5
    Electronic Resource
    Electronic Resource
    Relaxation Transitions in Thermally Treated Polyaniline Films (2000)
    Springer
    Journal of thermal analysis and calorimetry 59 (2000), S. 721-727 
    Details
    ISSN: 1572-8943
    Keywords: ageing ; annealing ; DSC ; polyaniline ; relaxation transition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Thermally treated films of polyaniline-emeraldine base (PANI-EB) cast from NMP solution were studied by using differential scanning calorimetry. Dependence of the thermodynamic parameters of the relaxation transitions on temperature and annealing period as well as the effect of the thermal history of the samples upon the crosslinking processes were investigated. For the first time DSC analysis of PANI-EB films after prolonged ageing was performed. It was found that relaxation transitions can be registered only for crosslinked PANI-EB. The crosslinking processes proceed both upon short-time heating of the polymer studied over80°C and during long-time storage at room temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010141418060
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  • 6
    Electronic Resource
    Electronic Resource
    Physical Aging of a Tetrafunctional/phenol Novolac Epoxy Mixture Cured with Diamine. DSC and DMA measurements (2000)
    Springer
    Journal of thermal analysis and calorimetry 60 (2000), S. 391-399 
    Details
    ISSN: 1572-8943
    Keywords: DMA ; DSC ; physical aging ; TGDDM epoxy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The physical aging of a system containing tetraglycidyl-4-4′-diaminodiphenylmethane (TGDDM), with a multifunctional novolac glycidyl ether resin hardened by 4,4′-diaminodiphenylsulphone (DDS) has been investigated by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). Samples fully cured were aged at temperatures between 200 and 250°C, during periods of time from 1 to a maximum of 336 h. Furthermore, the dynamic mechanical relaxation behaviour annealed at temperature of 220°C, was studied, aging during 24 and 168 h. The effect of the enthalpy relaxation during DSC heating scan is shown by the presence of an endothermic peak whose position and intensity depends on the aging conditions, both temperature and time. DSC studies suggest that enthalpy relaxation increases gradually with aging time to a limiting value for each temperature where structural equilibrium is reached. DMA results show that the effect of aging is to cause chain stiffening and a decrease in the height of the peak value of the loss factor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010125022491
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  • 7
    Electronic Resource
    Electronic Resource
    A New Software to Show The Behaviour of The PID Controller. Part II. Influence of the setting parameters of DSCs (2000)
    Springer
    Journal of thermal analysis and calorimetry 60 (2000), S. 345-355 
    Details
    ISSN: 1572-8943
    Keywords: DSC ; PID controllers ; tuning PID parameters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Some DSC calorimeters, such as the model DSC 111, built by the society Setaram, allow the user to set the temperature programming parameters. Usually default values furnished by the constructor are often used, but it is very interesting to study the thermal behaviour of the regulation of the calorimeter under different conditions and with different kinds of set point temperatures. For this research, we have developed in C language a set of software in order to demonstrate the behaviour of the (proportional integral derivative) PID controller of the DSC. It can help the user to choose correct values for P, I and D parameters according to the kind of experiment conducted. The software allows studies of extra parameters, such as the sampling rate of the computerized PID controller or the determination of filtering of the correction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010152317039
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  • 8
    Electronic Resource
    Electronic Resource
    DSC in the Chemical Analysis of Drugs. Determination of diclofenac in pharmaceutical formulations (2000)
    Springer
    Journal of thermal analysis and calorimetry 61 (2000), S. 369-376 
    Details
    ISSN: 1572-8943
    Keywords: diclofenac ; DSC
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Differential scanning calorimetry was applied to the determination of diclofenac in three 'Voltaren' formulas. The pharmaceutical products (soluble tablets, suppositories and vials) were selected in order to show that calorimetric analysis is an easy technique to perform and can be competitive with other conventional methods. In the tablets diclofenac (DH) was determined, without any pre-treatment, from the area of the endothermic peak which occurs at about 180°C in the DSC curve obtained in N2 atmosphere. In the analysis of the suppositories and vials, nitrilotriacetic acid (NTA) was added to transform the diclofenac sodium salt (DS) into the thermally active form (DH). In both cases, it was necessary to eliminate the interference of excipient by cyclohexane extraction (suppositories) or by a multistep program for the DSC run (vials). The accuracy of the results and the simplicity of the procedure justify the important role of DSC in the analysis of these drugs and certainly of several other commercial products.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010153014302
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  • 9
    Electronic Resource
    Electronic Resource
    Study of the Crystallization of an Aromatic Poly-ether-ketone (PK99) by Calorimetric and X-ray Analysis (2000)
    Springer
    Journal of thermal analysis and calorimetry 61 (2000), S. 565-578 
    Details
    ISSN: 1572-8943
    Keywords: crystallization ; DSC ; PK99 ; rigid amorphous fraction ; WAXD
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract An analysis of the crystallization behaviour of a new poly(aryl-ether-ether-ketone-ketone), PK99, by differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) is presented. Isothermal crystallization TG were obtained in the whole range between the glass transition temperature (T g) and the melting temperature (T m) as a consequence of the slow crystallization kinetics stemming from the closeness of these transitions. The calorimetric results, compared with WAXD data, were applied to determine the theoretical melting temperature and crystallization enthalpy. The DSC and WAXD data were combined in order to calculate the total amount of the crystallizable fraction of the polymer, and a model was proposed to explain the difference between the fractions of crystallinity observed with these techniques. The thermal and X-ray data were also correlated with different lamellar morphologies arising from the crystallization conditions. Finally, DSC experiments on the crystallized sample were used to detect the presence of a rigid amorphous phase which does not relax at T g.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010185905642
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  • 10
    Electronic Resource
    Electronic Resource
    A New Software to Show the Behaviour of the PID Controller. Influence of the setting parameters of DSCs. Part I (2000)
    Springer
    Journal of thermal analysis and calorimetry 59 (2000), S. 999-1015 
    Details
    ISSN: 1572-8943
    Keywords: DSC ; PID controllers ; tuning PID parameters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Some DSC calorimeters such as the model Setaram DSC 111 allow the user to set the parameters of temperature programming. Default values furnished by the constructor are often used, but it is very interesting to study the thermal behaviour of the regulation of the calorimeter under different conditions and kinds of set point temperatures. For this research we have developed in C a set of softwares in order to show the behaviour of the proportional integral derivative (PID) controller of the DSC. It can help the user to choose correct values for P, I and D parameters according to the kind of experiment conducted. The software allows studies for extra parameters such as the sampling rate of the computerized PID controller or the determination of filtering of the correction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010151114851
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