Non-isothermal crystallization kinetic

Verhoyen, 0., Dupret, F. and Legras, R., Isothermal and non-isothermal crystallization kinetics of polyethylene terephthalate mathematical modeling and experimental measurement, Polym. Eng. Sci., 38, 1592-1610 (1998). [Pg.190]

D. W. Henderson, Thermal Analysis of Non-Isothermal Crystallization Kinetics in Glass Forming Liquids , Journal of Non-Crystalline Solids, 30 301-315 (1979). [Pg.90]

It is very important to understand non-isothermic kinetics to analyse the composition s technological properties, especially at very high sp s of cooling, which occur in thermoplasts and thermoplast-based compositions processing. The method for describing and forecasting non-isothermic crystallization kinetics is proposed in Ref [59]. Alternative methods for describing kinetics are in the studies cited in Ref [59] (see also Refs. [66, 67]). The essence of the method in Ref [59] is as follows. [Pg.15]

When the TTS principle is carried out, the non-isothermic crystallization kinetics can be described by replacing argument t in the dependence of non-crystallinity degree of time during isothermic crystallization. The replacement equation is... [Pg.16]

Mo ZS (2008) A method for the non-isothermal crystallization kinetics of polymers. Acta Polymerica Sinica 7 656-661... [Pg.222]

Xu, J.-T., Wang, Q., and Fan, Z.-Q. 2005. Non-isothermal crystallization kinetics of exfoliated and intercalated polyethylene/montmorillonite nanocomposites prepared by in situ polymerization. European Polymer Journal 41 3011-3017. [Pg.180]

Finally, the Avrami equation modified by Jeziorny (II.I) was applied for studying the non-isothermal crystallization kinetics (Xu et al. 2005) ... [Pg.317]

Wang, L. H. and Sheng, J. 2005. Non-isothermal crystallization kinetics of polypropylene/ attapulgite nanocomposites. Journal of Macromolecular Science-Physics B 44 31 2. [Pg.362]

The common method for modeling both isothermal and non-isothermal crystallization kinetics from amorphous solids is the Johnson-Mehl-Avrami -Kolmogorov... [Pg.430]

Al-Ghamdi, A.A., Alvi, M.A., Khan, S.A. (2011). Non-isothermal crystallization kinetic study on Gai5Se85-iAgc chalcogenide glasses by using differential scanning calorimetry. Journal of Alloys and Compounds, 509, pp. 2087-2093,0925-8835... [Pg.158]

Non-isothermal crystallization kinetics can be analyzed by using the extension of the Avrami theory [68-70] and proposed by Ozawa [71, 72], This analysis accounts for the effect of cooling rate on crystallization from the melt by replacirtg the time variable in the Avrami equation with a variable cooling rate term, that is, by replacing f in the equation (3) with TIa as shown in the equation (4) ... [Pg.50]

In order to describe the non-isothermal crystallization process more effectively for comparison, Liu et al. [75] suggested a convenient procedure for characterizing non-isothermal crystallization kinetics by combining the Avrami and Ozawa equations based on the assumption that the degree of crystallinity was correlated to the cooling rate and crystallization time. Therefore, their relationship for non-isothermal crystallization can be derived by combining the equations (3) and (4) as follows ... [Pg.53]

Henderson, DW. (1979). Thermal analysis of non-isothermal crystallization kinetics in glass forming liquids. 1 Non-Cryst Solids 30 301-315. [Pg.166]

Hao W, Yang W, Cai H, Huang Y. Non-isothermal crystallization kinetics of polypropylene/silicon nitride nanocomposites. Polym Test 2010 29 527-33. [Pg.306]

Differential scanning calerimetry and non-isothermal crystallization kinetics studies... [Pg.390]

Non-isothermal crystallization kinetics for nylon-6 and nanocomposite samples were studied. The onset of the crystallization, crystallization temperature and the heat of the crystallization were noted during the cooling cycle. Using Universal Analysis software, running integration function was performed for crystallization peak in heat flow (J/g) vs. time (minutes) plot to get the values of relative crystallinity X, for different values of time t. The time required for the sample to crystallize 50% ti/2) was noted for the nylon-6 and nanocomposite samples. Then the chart of In [-In (1 - Xj)] vs. In t was plotted. The Avrami equation was used to determine values of n and k from the slopes and the interception of the best fit (Equation 14.4). [Pg.390]

Baird, D.G., Bhzard, K., Non-Isothermal crystallization kinetics and thermal stabihty of the in situ reinforced composite films based on thermotropic liquid crystalhne polymer and polypropylene /. Therm Anal Calorim V103,1017-1026 (2011). [Pg.161]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...