Thermal-History Dependence of Phase Separation Induced by Radical Polymerization of 2-Chlorostyrene in the Presence of Polystyrene

2001 ◽  
Vol 34 (12) ◽  
pp. 4027-4032 ◽  
Author(s):  
Mamoru Okada ◽  
Toshiki Sakaguchi
Keyword(s):  
Phase Separation ◽  
Radical Polymerization ◽  
Thermal History ◽  
History Dependence

Interplay of crystallization and liquid–liquid phase separation in polyolefin blends: A thermal history dependence study

Polymer ◽  
2007 ◽  
Vol 48 (14) ◽  
pp. 4226-4234 ◽  
Author(s):  
Katsumi Shimizu ◽  
Howard Wang ◽  
Go Matsuba ◽  
Zhigang Wang ◽  
Hongdoo Kim ◽  
...  
Keyword(s):  
Phase Separation ◽  
Liquid Phase ◽  
Thermal History ◽  
Liquid Phase Separation ◽  
History Dependence ◽  
Polyolefin Blends ◽  
Liquid Liquid Phase Separation

Stereo-chemical contributions to the glass transition and liquid–liquid phase separation in high molecular weight poly(N-vinyl carbazole)

RSC Advances ◽  
2016 ◽  
Vol 6 (35) ◽  
pp. 29326-29333 ◽  
Author(s):  
Abdul G. Al Lafi ◽  
James N. Hay
Keyword(s):  
Molecular Weight ◽  
Glass Transition ◽  
Phase Separation ◽  
Liquid Phase ◽  
High Molecular Weight ◽  
Structural Properties ◽  
Thermal History ◽  
Liquid Phase Separation ◽  
High Molecular Weight Poly ◽  
Liquid Liquid Phase Separation

Thermal history and purification effects on the structural properties of PVK were investigated. Liquid–liquid phase separation is suggested to occur by separation of isotactic rich segments from a matrix which is predominantly atactic.

Microstructure development in furfuryl resin-derived microporous glassy carbons

1996 ◽  
Vol 11 (9) ◽  
pp. 2338-2345 ◽  
Author(s):  
Kristen Persels Constant ◽  
Jonq-Ren Lee ◽  
Yet-Ming Chiang
Keyword(s):  
Phase Separation ◽  
Ethylene Glycol ◽  
Glassy Carbon ◽  
Thermal History ◽  
Liquid State ◽  
Furfuryl Alcohol ◽  
Time Dependent ◽  
Miscibility Gap ◽  
Microstructure Development

The processing of microporous glassy carbon derived from furfuryl alcohol and ethylene glycol mixtures has been studied, with emphasis on understanding and controlling microstructure development. It is shown that this system exhibits a polymerization-dependent miscibility gap, and that the carbon microstructure is determined by phase separation in the liquid state. Variations in carbon microstructure with composition and thermal history can be understood in terms of the time-dependent immiscibility and resulting phase separation.

Phase separation, thermal history and magnetic behaviour of Sr doped LaCoO3

2000 ◽  
Vol 12 (47) ◽  
pp. 9761-9770 ◽  
Author(s):  
G Baio ◽  
G Barucca ◽  
R Caciuffo ◽  
D Rinaldi ◽  
J Mira ◽  
...  
Keyword(s):  
Phase Separation ◽  
Thermal History ◽  
Magnetic Behaviour

FEATURES OF IN SITU FORMATION OF MIXTURES OF LINEAR POLYMERS

2021 ◽  
Vol 43 (4) ◽  
pp. 280-286
Author(s):  
T.D. IGNATOVA ◽  
◽  
L.F. KOSYANCHUK ◽  
Keyword(s):  
Phase Separation ◽  
Molecular Mass ◽  
Radical Polymerization ◽  
Chemical Nature ◽  
Chain Extender ◽  
Molar Ratio ◽  
Conversion Degree ◽  
Linear Polymers ◽  
A Chain

This article is devoted to the analysis of the results of the investigation of the process of forming mixtures of linear polymers formed simultaneously in situ according to different mechanisms. The first mechanism is polyaddition, the second mechanism is radical polymerization. This is one of the possible ways to obtain multicomponent polymer systems. The kinetics of chemical reactions of the formation of components and the phase separation which accompanies these reactions were studied for mixtures of poly(methyl methacrylate) (PMMA) with two polyurethanes (PU) of different chemical nature of both flexible and rigid blocks. PU-1 was synthesized from macrodiisocyanate based on oligo(tetramethylene glycol) with molecular mass 1000 g·mol–1 and hexamethylene diisocyanate taken in the molar ratio 1 : 2 using diethylene glycol as a chain extender. PU-2 was synthesized from macrodiisocyanate based on olygo(propylene glycol) with molecular mass 1000 g·mol–1 and toluylene diisocyanate taken in the molar ratio 1 : 2 using butanediol as a chain extender. The mixture of polystyrene (PS) with PU-2 was studied too. It is established that regardless of the chemical nature of the components, the process of in situ mixture formation is subject to general laws. In particular, the change in the chemical nature of the component formed by the mechanism of polyaddition (mixtures PMMA/PU-1 and PMMA/PU-2) or of the component formed by radical polymerization (mixtures PMMA/PU-2 and PS/PU-2) does not affect the nature of the dependence of the conversion degree of components and the fraction of formed polymers at the beginning of the phase separation on the composition of the initial reaction mixtures. Only the absolute values of these parameters change due to different reactivity and different thermodynamic compatibility of the mixed components.

Thermal history dependence of indentation induced densification in an aluminosilicate glass

2016 ◽  
Vol 445-446 ◽  
pp. 34-39 ◽  
Author(s):  
Simon Striepe ◽  
Joachim Deubener ◽  
Marcel Potuzak ◽  
Morten M. Smedskjaer ◽  
Anja Matthias
Keyword(s):  
Thermal History ◽  
Aluminosilicate Glass ◽  
History Dependence

scholarly journals Analysis of the Phase Separation Induced by a Free-Radical Polymerization in Solutions of Polyisobutylene in Isobornyl Methacrylate

2007 ◽  
Vol 46 (23) ◽  
pp. 7535-7542 ◽  
Author(s):  
Ezequiel R. Soulé, ◽  
Guillermo E. Eliçabe ◽  
Julio Borrajo ◽  
Roberto J. J. Williams
Keyword(s):  
Phase Separation ◽  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization
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