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The phase‐separation behavior of high‐density polyethylene (HDPE)/diluent blends was monitored with a torque variation method (TVM). The torque variation of the molten blends was recorded with a rheometer. It was verified that TVM is an efficient way to detect the thermal phase behavior of a polymer–diluent system. Subsequently, polyethylene hollow‐fiber membranes were fabricated from HDPE/dodecanol/soybean...
Two polypropylene hollow-fiber membranes with quite different porosities and gas permeation rates were encapsulated as U-configuration modules, and their filtration properties were evaluated with the method of dead-end tap water filtration. The filtration processes were described by filtration cake theory. At the beginning of one operation period, the resistance of the membrane dominated the permeation,...
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