Diffusion induced phase separation with crystallizable nylons. II. Relation to final membrane morphology

Intermediate stages during membrane formation by means of immersion precipitation were studied by cryo-substitution for the system nylon 4,6, formic acid and water. The presence, nature and size of solid particles was determined as a function of time and of the distance from the interface. The spher...

Full description

Saved in:
Bibliographic Details
Published in:Journal of membrane science 1996-11, Vol.121 (1), p.51-58
Main Authors: Bulte, A.M.W., Mulder, M.H.V., Smolders, C.A., Strathmann, H.
Format: Article
Language:English
Subjects:
Applied sciences
Cryo-substitution
Exact sciences and technology
Exchange resins and membranes
Forms of application and semi-finished materials
Membrane formation
Polymer industry, paints, wood
Spherulitic crystallization
Technology of polymers
Transmission electron microscopy
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Intermediate stages during membrane formation by means of immersion precipitation were studied by cryo-substitution for the system nylon 4,6, formic acid and water. The presence, nature and size of solid particles was determined as a function of time and of the distance from the interface. The spherulitic nature of these particles was confirmed by staining the samples. It was shown that at a relatively low nucleation density the concentration profile in the film was hardly influenced by a starting phase separation process, while in a situation with a relatively high number of nuclei per volume concentration patterns must be considerable altered.
ISSN:0376-7388
1873-3123
DOI:10.1016/0376-7388(96)00164-0