Počet záznamů: 1
A simple method of evaluating non-isothermal crystallization kinetics in multicomponent polymer systems
- 1.
SYSNO ASEP 0447178 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název A simple method of evaluating non-isothermal crystallization kinetics in multicomponent polymer systems Tvůrce(i) Kratochvíl, Jaroslav (UMCH-V) RID
Kelnar, Ivan (UMCH-V) RID, ORCIDZdroj.dok. Polymer Testing. - : Elsevier - ISSN 0142-9418
Roč. 47, October (2015), s. 79-86Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova non-isothermal crystallization kinetics ; cumulative curves ; inflection point Vědní obor RIV JI - Kompozitní materiály CEP GA13-15255S GA ČR - Grantová agentura ČR Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000362859000012 EID SCOPUS 84940838294 DOI https://doi.org/10.1016/j.polymertesting.2015.07.010 Anotace A new simple method of evaluating non-isothermal crystallization kinetics is proposed. The procedure based on mathematical treatment of DSC cumulative crystallization curves at their inflection point provides three kinetic parameters: temperature of start of crystallization (Ts), temperature of maximum crystallization rate (Ti) and numerical value of the maximum crystallization rate (si), and also final crystallinity after cooling (CRc). The method is demonstrated on the system poly(ε-caprolactone)/poly(lactic acid)/clay C15 and related microfibrillar composite. The method provides the values of Ts and Ti with standard deviation σ = 0.3 and 0.4 °C, respectively. The coefficient of variation v of si and CRc is 5.8 and 1.5%, respectively. The proposed method does not refer to any crystallization model and does not require exact determination of the starting time. It is particularly useful for characterizing a series of samples derived by modification of the neat polymer. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2016
Počet záznamů: 1