Microscopic analysis of porosity of 2-vinylpyridine copolymer networks: 1. Influence of diluent

The porous structure of copolymer networks based on 2-vinylpyridine, styrene and divinylbenzene at varied proportions prepared by suspension polymerization was varied by using different kinds of porogen agent, namely toluene, n-heptane, ethyl acetate. The materials were characterized by determinatio...

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Bibliographic Details
Published in:Materials letters 2004-02, Vol.58 (5), p.563-568
Main Authors: de Santa Maria, Luiz Claudio, de Aguiar, Alcino P., Aguiar, Mônica R.M.P., Jandrey, Angela C., Guimarães, Pedro Ivo C., Nascimento, Luciana G.
Format: Article
Language:English
Subjects:
2-Vinylpyridine copolymer
Microscopic analysis
Polymers
Porosity
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Summary:The porous structure of copolymer networks based on 2-vinylpyridine, styrene and divinylbenzene at varied proportions prepared by suspension polymerization was varied by using different kinds of porogen agent, namely toluene, n-heptane, ethyl acetate. The materials were characterized by determination of surface area, average pore diameter and pore volume by BET/BJH, apparent density, elemental analysis (CHN) and swelling degree. Their morphologic characteristics were evaluated by microscopic analyses and correlations among porous structures and reaction parameters were found. It was noted that all synthesized resins have presented narrow particle size distributions; their porosities and visual appearances were dependent on the type and dilution of solvent employed in their syntheses.
ISSN:0167-577X
1873-4979
DOI:10.1016/S0167-577X(03)00562-7