POROUS HOLLOW-FIBER MEMBRANE AND PRODUCTION PROCESS THEREFOR
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Aug 6, 2020
app pub date -
May 30, 2017
filing date -
May 31, 2016
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Abstract
The porous hollow-fiber membrane of the present invention comprises a fluororesin polymer, and has columnar structures oriented in the longitudinal direction thereof. In the porous hollow-fiber membrane, molecular chains of the fluororesin polymer have been oriented in the longitudinal direction of the porous hollow-fiber membrane and have an average value ν of Raman orientation parameter of 1.5-4.0.
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