Integral procedure decomposition temperature

Acrylic Polymers. Burrows et al. [95] showed by the Integral Procedural Decomposition Temperature (IPDT) method that for main group metal ions -the stabilizing effect in regard to polyacrylamide is inversely proportional to the radius of the metal ion reemphasizing that the strength of the complex between the ion and the polymer is of importance in deciding the stability. 

Since the usual decomposition temperatures obtained from TG are highly dependent on the experimental procedure employed, Doyle (43) has used the expression procedural decomposition temperature as a precaution against mistakenly regarding such trivial data as definitive. Two types of procedural decomposition temperatures were defined by Doyle (43). The first of these was called the differential procedural decomposition temperature (dpdtl which was used to define the location of knees in normalized TG curves. The second type was called integral procedural decomposition temperature (ipdt) and was a means of summing up the entire shape of the normalized mass-loss curve. 

Tabic 4.8. Integral Procedural Decomposition Temperatures of Some Common Polymers (43)... 

Thermal properties of the copolymers were assessed on V2.21. Dupont thermal analyser. The thermograms of the copolymers are shown in Fig,4. The results are summarized in Table 5. The relative thermal stability of the copolymers has been compared using Integral procedure decomposition temperature values. The data gives the order of thermal stability of TCEM< TCBM[Pg.389]

IDPT Integral procedure decomposition temperature FDT Final decomposition temperature... 

Thermal stabilities of the polyimides were examined by Thermogravimetric Analysis. The integral procedural decomposition temperature (IPDT), a semi quantitative method, has been used to evaluate the relative thermal stabilities of the PT and MT series. The results are listed in Table 3. 

IPDT - integral procedural decomposition temperature max temperature corresponding to maximum decomposition rate... 

The integral procedure decomposition temperature (IPDT) that was proposed by Doyle concerns the volatile parts of the polymeric materials and is used to estimate their inherent thermal stability (Doyle, 1961 Jelena et al., 2006 Park et al., 2001). From Table 10.2, the IPDT of pure epoxy was 634 °C and the IPDTs of the composites were higher than that of pure epoxy. Inorganic components improve the thermal sta-bihty of pure epoxy. 

The dried product may be stored at room temperature in a screw-cap Teflon bottle, but slow decomposition (1-2% per month) is sometimes observed. To assure the greatest possible integrity of the sample, the following storage procedure is recommended. The loosely capped Teflon bottle containing the CSSO4F is placed in a vacuum desiccator, which is evacuated and backfilled with dry... 

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