ΜΕΛΕΤΗ ΤΩΝ ΜΕΤΑΠΤΩΣΕΩΝ ΤΩΝ ΜΑΚΡΟΜΟΡΙΑΚΩΝ ΑΛΥΣΙΔΩΝ ΣΤΗΝ ΠΕΡΙΟΧΗ ΤΩΝ ΣΥΝΘΗΚΩΝ Θ

THE VISCOSIMETRIC STUDY OF DILUTE SOLUTIONS OF POLYSTYRENE POLYMETHYL METHACRYLATE AND POLYVINYL-2-PIRIDINE VERSUS TEMPERATURE SHOWED THAT THE MACROMOLECULARECHAINS UNDERGO AN ABRUPT LOWERING OF THEIR DIMENSIONS ABOVE THE Θ CONDITIONS. THIS TRANSITION IS ATTRIBUTED TO AN ABRUPT CHANGE OF THE FLEXIBILITY OF THE CHAIN AS IT IS DEMONSTRATED ON THE SHORT RANGE INTERACTIONS PARAMETER. THESE PHENOMENA HAVE BEEN VERIFIED BY THE TECHNIQUE OF GEL PERMEATION CHROMATOGRAPHY WHICH HAS BEEN USED FOR THE FIRST TIME. THIS METHOD REQUIRES VERY SMALL AMOUNT OF SAMPLE AND MAY PROVE USEFUL IN THE STUDY OF TRANSITIONS OF BIOPOLYMERS.

Grantor dc:publisher

University of Patras

Year dc:date

1987

Author dc:creator

• Τσιτσιλιάνης, Κωνσταντίνος

• ΕΥΚΑΜΨΙΑ ΑΛΥΣΙΔΑΣ
• ΙΞΩΔΕΣ ΑΡΑΙΩΝ ΔΙΑΛΥΜΑΤΩΝ ΠΟΛΥΜΕΡΩΝ
• ΜΕΤΑΠΤΩΣΕΙΣ ΜΑΚΡΟΜΟΡΙΩΝ
• ΠΟΛΥΒΙΝΥΛΟ-2-ΠΥΡΙΔΙΝΗ
• Πολυμεθακρυλικός μεθυλεστέρας
• Πολυστυρόλιο
• ΣΥΝΘΗΚΕΣ Θ
• ΧΡΩΜΑΤΟΓΡΑΦΙΑ ΔΙΑ ΜΕΣΟΥ ΠΥΚΤΩΜΑΤΟΣ
• CHAIN FLEXIBILITY
• Gel permeation chromatography
• MACROMOLECULES TRANSITIONS
• Polymethyl methacrylate
• Polystyrene
• POLYVINYL-2-DIRIDINE
• VISCOSITY OF POLYMER DILUTE SOLUTIONS
• Θ CONDITIONS
• Επιστήμες Μηχανικού και Τεχνολογία
• Επιστήμη Χημικού Μηχανικού
• Engineering and Technology
• Chemical Engineering

Language dc:language

gre

Identifier

10.12681/eadd/0558

OAI identifier oai:identifier

oai:10442/0558