Inhomogeneity of gel and microsyneresis in porous styrene‐divinylbenzene copolymers

Wiley - Tập 17 Số 2 - Trang 215-218 - 1985
Henryk Galina1, Bożena N. Kolarz1, Piotr Wieczorek1, Maria Wojczynska1
1Institute of Organic and Polymer Technology, Technical University of Wroclaw, Wyb. Wyspiańskiego 27, 50‐370 Wroclaw, Poland

Tóm tắt

AbstractThe porosity of styrene‐divinylbenzene copolymers prepared by suspension copolymerisation of the monomers carried out in the presence of inert diluent changes due to solvent pretreatment is investigated. The changes seem to reflect the inhomogeneity of copolymer gel. Various portions of it are transferred from the rubber‐like into the glassy state at different stages of either swelling solvent exchange or the drying process. A microsyneresis, i.e. a local collapse of loosely crosslinked gel portions not followed by a shrinkage of the whole system, leads to the porosity changes.

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Thông tin xuất bản

Wiley

Tập 17 Số 2

215-218

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