Letter | Published:

Freeze Dried Cellulose Acetate Membranes with 1000 Å Pores

Naturevolume 214page285 (1967) | Download Citation



CELLULOSE acetate has been found to be the most suitable material for casting porous membranes from solvent mixtures for use in reverse osmosis1. The aim of the present investigation was to examine a simple alternative method of producing micropores, which might be expected to traverse thin sections of cellulose acetate. Freeze drying its solutions offers such an opportunity, because removal of the solvent will not cause the polymer to collapse. The porosity of the product decreases as the concentration of the solution increases, and the strongest possible solutions were therefore investigated.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Loeb, S., and Sourirajan, S., U.C.L.A. Dept. Eng. Rep. No. 60–60 (1960).

  2. 2

    Lewis, F. M., and Mayo, R. F., Ind. Eng. Chem. Anal. Edn., 17, 134 (1945).

  3. 3

    Vinogradov, G. V., and Titkova, L. V., Kolloid. Zh., 27, 138 (1965).

Download references

Author information

Author notes

    • H. P. ROTHBAUM

    Present address: Chemistry Division, D.S.I.R., Wellington, New Zealand


  1. National Physical Laboratory, Teddington, Middlesex

    • H. P. ROTHBAUM


  1. Search for H. P. ROTHBAUM in:

About this article

Publication history



Issue Date




By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.