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Propene/1-decene copolymers (P-co-D) were synthesized by means of slurry polymerization process under atmospheric pressure using Ziegler-Natta catalyst (MgCl2/TiCl4/AlEt3). The random P-co-Ds were elastic, low-crystalline,thermally stable and therefore suitable to be used as membrane materials in organophilic pervaporation with chloroform/water mixture. Its mechanical strength is better than polydimethylsiloxane (PDMS). The correlation between structural parameters (glass transition temperature and crystallinity) and properties of organophilic pervaporation were investigated.