Authors:M. Odlyha, N. Cohen, G. Foster, A. Aliev, E. Verdonck, and D. Grandy
DMA and solid state 13C NMR techniques were used to measure historical parchment samples within the framework of the project (MAP) Micro Analysis
of Parchment (EC contract No. SMT4-96-2101) in collaboration with the School of Conservation in Copenhagen. DMA was used in
both thermal scan and creep modes. Thermal scans provided information on the transitions associated with the collagen polymer.
Microthermal analysis was also used to obtain information on the topography and thermal conductivity of sample areas of 100
μm. Localised heating enabled measurements of softening transitions in the sample. This behaviour is influenced by the chemical
composition of parchment. 13C NMR provided information on the carbon atoms associated with the polypeptide chains of the collagen
in parchment. The behaviour of samples immersed in water and measured in DMA creep mode was used to measure the shrinkage
behaviour of the parchment samples. The different but complementary techniques provided a means for characterising the physicochemical
state of parchment samples.
Authors:P. Budrugeac, Andrei Cucos, and Lucreţia Miu
), differential scanning calorimetry (DSC), Micro Hot Table (MHT), thermo-mechanical analysis (TMA), and dynamicmechanicalanalysis (DMA), are potentially useful to conservation scientist (see, for example [ 7 ]). In this article, the results reported in the
Authors:Ion Sava, Ştefan Chişcă, Maria Brumă, and Gabriela Lisa
heating rates of 10 °C min −1 and nitrogen purge of 100 mL min −1 were employed. Dynamicmechanicalanalysis (DMA) experiments were performed on the polymer film specimens (20 mm long, 10 mm wide, and 30–40 μm thick) on a PerkinElmer Diamond apparatus
Authors:Veridiana Reyes-Zamudio, Carlos Angeles-Chávez, and Jorge Cervantes
techniques [differential thermal analysis (DTA), thermogravimetry (TG), and dynamicmechanicalanalysis (DMA)] and supplementing the information with X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and environmental scanning electron
Authors:Gonzalo Vázquez, Jorge Santos, M. Sonia Freire, Gervasio Antorrena, and Julia González-Álvarez
indium. The results were analysed using the STAR e software supplied by Mettler-Toledo. The model free kinetics isoconversional method was used to analyze chemical cure kinetics.
Dynamicmechanicalanalysis (DMA) experiments
segments. Both of these processes can be investigated using differential scanning calorimetry (DSC). The glass transition region can be investigated very well using dynamicmechanicalanalysis (DMA).
However, Saiani et al. [ 2 ] indicate that
Authors:R. Simoes, M. Rodriguez-Perez, J. de Saja, and C. Constantino
DSC30 equipment for samples with ca. 5.0 mg from −120 to 200 °C at 10 °C min −1 and using N 2 . Dynamicalmechanicalanalysis (DMA) was performed in three point bending using a Perkin Elmer DMA 7 from −40 to 150 °C at 5 °C min −1 , frequency of 1 Hz
Authors:Hengfeng Li, Kaiyuan Tan, Zeming Hao, and Guowen He
CTFE content have been characterized by a series of thermal analysis techniques, including Thermogravimetric analysis (TG), Differential scanning calorimetry (DSC), Dynamicmechanicalanalysis (DMA), and Thermal mechanical analysis (TMA). The work
Authors:Smith Sundar, Mohini Sain, and Kristiina Oksman
cellulose long fibers (CLF)-based PLA composites prior to fiber orientation. Thermal analysis techniques such as thermo gravimetric analysis (TG), differential scanning calorimetry (DSC), and dynamicmechanicalanalysis (DMA) were used to characterize the
hot stage. Dynamicmechanicalanalysis (DMA) of the cured system was performed with a dynamic mechanical thermal analyzer (NETZSCH DMA 200). The frequency and amplitude of the vibration were adjusted to 2.5 Hz and 7.5 μm, respectively. The heating rate