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AbstractAbstract
[en] The membrane is irradiated twice, especially with heavy ions, once with an energy to low to pass through, then with enough energy. Molecular defects created by irradiation are preferentially attached by chemicals. Two pore networks are obtained: blind large diameter pores and fine pores through the membrane which can be used in filtration
[fr]
Une membrane est soumise a deux irradiations en particulier par des ions lourds dont l'une a energie insuffisante pour la traverser, mais dont l'autre traverse cette membrane. Les irradiations creent des defauts moleculaires que certains agents chimiques attaquent preferentiellement. On obtient donc deux reseaux de pores, les uns de gros diametre et non debouchants, les autres plus fins et debouchant sur les deux surfaces de la membrane qui peut etre utilisee pour la filtrationOriginal Title
Realisation de membranes microporeuses asymetriques par double irradiation, et membranes ainsi obtenues
Primary Subject
Source
27 May 1988; 20 Nov 1986; 14 p; FR PATENT DOCUMENT 2607022/A/; FR PATENT APPLICATION 8616163; Available from Institut National de la Propriete Industrielle, Paris (France); Application date: 20 Nov 1986
Record Type
Patent
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