Thermal characterisation of Boc-aminostyrene/styrene copolymers latexes

Microspheres based on funcionalized polystyrene are used as supports for immunological reactions. New styrene/Boc-aminostyrene (St/BocAmSt) copolymers and the corresponding styrene–aminostyrene (St/AmSt) copolymers obtained as microspheres under dispersion polymerization conditions and successive de...

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Bibliographic Details
Published in:Thermochimica acta 1999-12, Vol.342 (1), p.97-103
Main Authors: Covolan, V.L, Fernandes, E.G, D’Antone, S, Chiellini, E
Format: Article
Language:English
Subjects:
Aminated styrene copolymers
Applied sciences
DSC
Exact sciences and technology
Microspheres
Organic polymers
Physicochemistry of polymers
Polystyrene
Properties and characterization
Thermal and thermodynamic properties
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Summary:Microspheres based on funcionalized polystyrene are used as supports for immunological reactions. New styrene/Boc-aminostyrene (St/BocAmSt) copolymers and the corresponding styrene–aminostyrene (St/AmSt) copolymers obtained as microspheres under dispersion polymerization conditions and successive deblocking reaction respectively, were characterized by thermogravimetry (TG) and differential scanning calorimetry (DSC). Thermal stability was found to be dependent on copolymer molecular weight and composition. The St/AmSt copolymers were more stable than St/BocAmSt copolymers and showed a direct relationship with AmSt content. Glass transition temperature as a function of copolymer composition obeyed the Fox equation in good approximation. For low molecular weight copolymers the glass transition temperature was between 91°C [ T g poly(styrene)] and 151°C [ T g poly(Boc-aminostyrene).
ISSN:0040-6031
1872-762X
DOI:10.1016/S0040-6031(99)00288-9