Adaptable　thermal　conductivity　measurements　of　microporous　membranes　based　on　freestanding　sensor-based　3　omega　technique　is　proposed.　The　adaptability　and　flexibility　of　the　freestanding　sensor　enable　microporous　membranes　with　various　mechanical　and　thermal　properties　to　be　easily　sandwiched　between　the　freestanding　sensor　and　a　semi-infinite　thermally　conductive　substrate,　assembling　into　a　five-layer　substrate-membrane-sensor-membrane-substrate　configuration.　A　theoretical　model　for　the　calculation　of　membrane＇s　thermal　conductivity　is　provided　by　comparing　the　temperature　difference　between　the　five-layer　configuration　and　a　three-layer　substrate-sensor-substrate　configuration.　The　well　agreed　experimental　results　with　the　theoretically　calculated　values　indicate　that　the　present　strategy　can　be　widely　applied　to　the　thermal　properties　characterization　of　microporous　membranes　in　membrane　distillation.　(C)　2014　Elsevier　Masson　SAS.　All　rights　reserved.