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A simple method of evaluating non-isothermal crystallization kinetics in multicomponent polymer systems

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, ORCID}
Zdroj.dok.	Polymer Testing. - : Elsevier - ISSN 0142-9418 Roč. 47, October (2015), s. 79-86
Poč.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	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