Poly heating curve

Figure 6 Comparison between TPD (m/e = 48) spectra for TDF condensed at 130 K on a Li-covered Ag(poly) surface using electron bombardment from the rear (curve A) and resistive heating (curve B). Heating rate 5 K/s. (From Ref. 3.)...

Figure 29 TPD spectra for m/e = 74 (curve a), 43 (curve b), 44 (curve c), 28 (curve d) and 2 (curves e) for a surface prepared by condensing 21 L of BuOH at 150 K on Li(15 ML)/Au(poly), heating to 200 K for 3 min to remove (most of the) excess bulk BuOH, and further exposing to carbon dioxide first (74 L) at 200 K and later at 130 K (34 L). A few minutes were allowed to elapse prior to the acquisition of the TPD data to pump excess gas phase C02. (From Ref. 4.)...

Figure 10.7 DSC curves of polyethylene terephthalate)-poly(acrylonitrile-butaliene-styrene) (PET-ABS) blends (a) conventional DSC first and second heating curves with heating and cooling rate of lOKmin-1 and (b) temperature modulated DSC (TMDSC) first heating curves with /3=2Kmin 1, p = 60s and 5= 1K. Tg, glass transition temperature. (Reproduced with permission from T. Hatakeyama and F.X. Quinn, Thermal Analysis Fundamentals and Applications to Polymer Science, 2nd ed., John Wiley Sons Ltd, Chichester. 1999 John Wiley Sons Ltd.)...

DSC heating curves of quenched poly(thio-l,4-phenylene-phenylphosphonyl-1, 4-phenylenethio-4,... 

Fig. 3 DSC heating curve of poly(silamine) HI in the range from -100 "C to 200 C (5 "C min ) (The sample was annealed at 200 C and then cooled at 120 C min ) (Reproduced from ref. 4 by courtesy of publishers, Hiitig and Wepf, Zug, Switzerland)...

In Fig. 9.6, the WAXD-pattern of the 2nd heating curve of 49 m% PAG in water is shown. At room temperature, the pattern displays two sharp peaks at 26 = 19.6° ai(2U0)] and at 26 = 24.0° [0 2(0U2)-k(2t)2)] on top of a halo due to water and non-crystalline PAG. These sharp peaks point to the cc-structure [45, 56]. When the mixture is heated, the position of the (200) reflection remains identical while the position of the (002) + (202) peak shifts to lower angles, as illustrated in Fig. 9.7. This behavior is also seen in the pure PAG, and is typical for polyamides. At 165°C, all PAG dissolves in water and accordingly the halo amplifies. When the poly amide-water mixture is cooled at 5°C/min, the two cc-peaks start to appear at 130°C (Fig. 9.8). These temperatures are consistent with the melting and crystallization temperatures found from the DSC-measurements. This is the case for the whole concentration range. 

Fig. 3.3. Heating curves of poly(tetroxocane) prepared at various temperatures Polymer yields, 10 3% testing rate, 16 pdymerization temperatures...

Fig. 3.4. Heating curves of poly tetroxocane) obtained with various molecular weights at the same polymer yield (11%) heating rate, 20 C/ min sample weight, 0.37 0.01 mg molecular weights are indicated in the figure...

Fig. 3.5. Heating curves erf poly(tetroxocane) obtained at various polymer yields with the same molecular weight (I) (2x lO ) heating rate, 20 °C/min, polymer yields are indicated inthef ure...

Fig. 4.3. Heating curves of poly(tetroxocane) annealed under an oxygen atmosphere Same polymer as in 4.1 tearing rate, 16 C/min ...

Fig. 4.7. Effect of the aniKaling temperature (in nitrogen) on the heating curves in relation to T, of the melt-crystallized poly(tetroxocane) at a cooling rate of 64 C/min A, original mdt-crystallized B, sample A annealed at 165 °C...

Fig. 4.18. Heating curves of annealed poly(tetroxocane) (same sampie as in Fig. 4.17)...

The changes of the lattice constant c and of half widths of 009 and 0018 frofiles are calculated from the middle point of the half width of profiles by Brad s condition. Table 4.1 summarizes the values of c. Besides the results of PTeOX and PTOX, the values of poly(oxymethylene) (Delrin-500) are tabulated for comparison. All samples show the increase of c at an annealing temperature above 150 C. PTOX aimealed at 180 °C contains the folded chain crystal, since the heating curve shows a new endotherm at a lower temperature side, and Delrin is also of the folded chain crystal. In the case of the folded chain crystal, the increase of the lattice constant c is rather remarkable. On the other hand, the small increase of c in as-polymerized... 

Fig. 5.1a and b. Heating curves of poly(trioxane) irradiated with various doses a 6% polymer yield b 80% polymer yield heating rate, 160 °C/min. The exposure dose is indicated in the figure... 

Fig. 5.3. Thermogravimetric curve and heating curve of poly(trioxane) (80% yield) transformed into powder by mixing mill Heating rate, 10 C/min in TG, and 16 °C/min in DSC heating curve...

Fig. 5.4. Heating curves of the melt-crystallized poly(trioxane) Heating rate, 16 C/min. The values in the figure indicate tte exposure dose...

Fig. 5.11. Heating curves of poly(tetroxooane) (obtained at 84 °Q irradiated with various doses Heating rate, 16 °C/min. Doses and sample weight are indicated in the figure...

Figure 7.20 DSC curves for poly(p-phenylene sulfide) (PPS) fibers [19]. 1, Heating curve of as-spun fiber 2, cooling curve 3, heating curve of the sample cooled from the molten state at 20 "C min 4, heating curve of the sample quenched from a temperature between the glass transition temperature and the cold crystallization temperature . 3, heating curve of the. sample cooled from the glassy state...

Figure 2.29. The DSC heating curve of a poly(ethylene 2,6-naphthalenedicarboxylate) sample at a heating rate of 10 °C/min previously cooled at 1 °C/min from the melt.There is no hysteresis peak at the glass transition see that part of the curve in the inset. Endothermis down. [PEN sample from Aldrich (435317-10(Xj) (Menczel, unpublished results).]...

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