Using of DSC for the study of structural changes of As-S glassy system
Černošková, Eva; Černošek, Z.; Holubová, J.
2001 - Czech Keywords: heat capacity; glass transition temperature; mean coordination number; tepelná kapacita Available at various institutes of the ASCR Using of DSC for the study of structural changes of As-S glassy system

Černošková, Eva; Černošek, Z.; Holubová, J.
Ústav makromolekulární chemie, 2001

Synthesis and optical properties of glasses systems Ge-In-S dotted by Pr3+ iont
Bílková, M.; Frumarová, Božena; Frumar, M.; Vlček, M.
2001 - Czech High purity glasses of (GeS2)100-x(In2S3)x y Pr2S3 (x=0-30, y=0-7) were prepared and their thermal and optical properties measured. V práci byla ve vysoké čistotě syntetizována skla systému (GeS2)100-x(In2S3)xy Pr2S3 (x=0-30, y=0-7). Byly studovány jejich termické a optické vlastnosti Keywords: chalcogenide glasses; optical properties; luminiscence Available at various institutes of the ASCR Synthesis and optical properties of glasses systems Ge-In-S dotted by Pr3+ iont

High purity glasses of (GeS2)100-x(In2S3)x y Pr2S3 (x=0-30, y=0-7) were prepared and their thermal and optical properties measured.

Bílková, M.; Frumarová, Božena; Frumar, M.; Vlček, M.
Ústav makromolekulární chemie, 2001

Calculations of phase equilibria for polymer blends
Živný, Antonín
2001 - Czech Methods of calculations of phase equilibria in polymer blends with specific interactions are analyzed on the basis of the quasichemical Barker theory. Particularly, numerical solution of the equation of the spinodal and subsequent construction of curves of phase coexistence in these systems are performed. Analyzují se metody výpočtů fázových rovnovah ve směsích polymerů se specifickými interakcemi na bázi kvazichemické Barkerovy teorie. Provádí se zejména numerické řešení rovnice spinodály a následná konstrukce křivek fázové koexistence v těchto systémech. Keywords: phase equilibria; polymer blends; specific interactions Available at various institutes of the ASCR Calculations of phase equilibria for polymer blends

Methods of calculations of phase equilibria in polymer blends with specific interactions are analyzed on the basis of the quasichemical Barker theory. Particularly, numerical solution of the equation ...

Živný, Antonín
Ústav makromolekulární chemie, 2001

Glass transformation and non-isothermal structural relaxation
Černošek, Z.; Holubová, J.; Černošková, Eva
2001 - Czech Keywords: glass transition temperature; non-isothermal relaxation; heat capacity; tepelná kapacita Available at various institutes of the ASCR Glass transformation and non-isothermal structural relaxation

Černošek, Z.; Holubová, J.; Černošková, Eva
Ústav makromolekulární chemie, 2001

The present state and problems of the Czech chemical nomenclature and terminology
Kahovec, Jaroslav
2001 - Czech Available at various institutes of the ASCR The present state and problems of the Czech chemical nomenclature and terminology

Kahovec, Jaroslav
Ústav makromolekulární chemie, 2001

Isothermal structural relaxation
Holubová, J.; Černošek, Z.; Černošková, Eva; Liška, M.
2001 - Czech Keywords: glass transition; isothermal relaxation; kinetic of relaxation; relaxace; sklo Available at various institutes of the ASCR Isothermal structural relaxation

Holubová, J.; Černošek, Z.; Černošková, Eva; Liška, M.
Ústav makromolekulární chemie, 2001

Photoinduced changes of structure and properties of amorphous chalcogenides, description, interpretation
Frumar, M.; Frumarová, Božena; Wágner, T.; Jedelský, J.
2001 - Czech Changes of properties and structure of thin films of amorphous chalcogenides were disscused, a model proposed and possible applications described. Jsou popsány a diskutovány změny vlastností a struktury tenkých filmů amorfních chalkogenidů a je předpovězen jejich model. Také jsou popsány možné aplikace. Keywords: amorphous chalcogenides; thin films; properties Available at various institutes of the ASCR Photoinduced changes of structure and properties of amorphous chalcogenides, description, interpretation

Changes of properties and structure of thin films of amorphous chalcogenides were disscused, a model proposed and possible applications described.

Frumar, M.; Frumarová, Božena; Wágner, T.; Jedelský, J.
Ústav makromolekulární chemie, 2001

Polymeric materials and man
Raab, Miroslav
2001 - Czech This invited introductory lecture concerns the historical perspective of polymeric materials. The role of individualpersonalities and also serendipity in scientific and technological discoveries is discussed. It is shown that the present marked development of commodity polymers is connected with their favourable price/performance ratio. Tato pozvaná úvodní přednáška se zabývá historií polymerních materiálů. Je zdůrazněna role jednotlivých osobností a také náhody při vědeckých a technických objevech. Je ukázáno, že současný pronikavý rozvoj komoditních polymerů souvisí s příznivým poměrem mezi cenou a užitnými vlastnostmi. Keywords: commodity polymers; price/performance ratio Available at various institutes of the ASCR Polymeric materials and man

This invited introductory lecture concerns the historical perspective of polymeric materials. The role of individualpersonalities and also serendipity in scientific and technological discoveries is ...

Raab, Miroslav
Ústav makromolekulární chemie, 2001

Kinetics of polymer crystallization
Kratochvíl, Jaroslav; Sikora, Antonín
2001 - Czech Kinetics of three steps of complex crystallization of poly(N-methyldodecano-12-lactam) were studied by DCS using an Avrami model. Mechanism of respective isothermal steps involves mixed heterogeneous/homogeneous nucleation (primary melt crystallization) or missing nucleation phase (additional crystallization and recrystallization) followed by two-dimensional growth. Kinetika tří dílčích stupňů komplexní krystalizace poly(N-methyldodekanolaktamu) byla studována DSC metodou za použití Avramiho modelu. Jednotlivé stupně izotermní krystalizace probíhají mechanismem dvojrozměrného růstu v kombinaci se směsnou heterogenní/homogenní nukleací (primární krystalizace z taveniny) resp. chybějící fázi nukleace (dodatečná krystalizace a rekrystalizace). Keywords: isothermal crystallization; kinetics; Avrami model Available at various institutes of the ASCR Kinetics of polymer crystallization

Kinetics of three steps of complex crystallization of poly(N-methyldodecano-12-lactam) were studied by DCS using an Avrami model. Mechanism of respective isothermal steps involves mixed ...

Kratochvíl, Jaroslav; Sikora, Antonín
Ústav makromolekulární chemie, 2001

The study of crystallization and melting of polymers by temperature modulated DSC
Sikora, Antonín; Kratochvíl, Jaroslav
2001 - Czech Melting behaviour of poly(N-methyldodekaco lactam) was studied by the temperature modulated DSC. Non-linear behaviour observed is given by melting kinetics and strong temperature dependence of c.sub.p./sub. in the melting region. Pomocí teplotně modulované DSC bylo studováno chování poly(N-methyldodekanolaktamu) v průběhu tání. Pozorované nelineární chování je spojeno s kinetikou tání a silnou teplotní závislostí c.sub.p./sub. v této oblasti. Keywords: melting of polymers; temperature modulated DSC; non-linear behaviour in melting region Available at various institutes of the ASCR The study of crystallization and melting of polymers by temperature modulated DSC

Melting behaviour of poly(N-methyldodekaco lactam) was studied by the temperature modulated DSC. Non-linear behaviour observed is given by melting kinetics and strong temperature dependence of ...

Sikora, Antonín; Kratochvíl, Jaroslav
Ústav makromolekulární chemie, 2001