TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The method further comprises: extracting diluent from the phase separated material; and mixing melt to provide the melt mixed composition, where the melt mixing comprises combining the ethylene chlorotrifluoroethylene copolymer, diluent and nucleating agent in a heated environment. The heated environment is an extruder (10) and the shaping of the melt mixed composition is accomplished by extruding the melt mixed composition through a die slot. The melt mixing further comprises selecting the diluent and the nucleating agent. The step of cooling further comprises: crystallizing at least a portion of the nucleating agent before crystallizing the ethylene chlorotrifluoroethylene copolymer; casting the melt mixed composition onto a surface of a quench wheel after crystallizing at least a portion of the nucleating agent, the surface cooling the melt mixed composition to induce crystallization of the ethylene chlorotrifluoroethylene copolymer; and casting the melt mixed composition into a quench bath after crystallizing at least a portion of the nucleating agent, the quench bath cooling the melt mixed composition to induce crystallization of the ethylene chorotrifluoroethylene copolymer. The nucleating agent is a particulate at room temperature, where the melt mixing comprises combining the nucleating agent, the ethylene chlorotrifluoroethylene copolymer and diluent, the nucleating agent is dispersed in a thermoplastic polymer prior to combining it with the ethylene chlorotrifluoroethylene copolymer and diluent. The method of manufacturing the multilayered microporous material further comprises: extracting diluent from the multilayered phase separated material; and melt mixing to provide many melt mixed compositions, the melt mixing comprising combining the first ethylene chlorotrifluoroethylene copolymer, first diluent and first nucleating agent in a first heated environment, and combining the second ethylene chlorotrifluoroethylene copolymer, second diluent and second nucleating agent in a second heated environment. The pores of the microporous materials are imbibed with another material comprising pharmaceuticals, fragrances, antimicrobials, antistatic agents, surfactants, pesticides, or solid particulate materials. The microporous material is coated with a material comprising metal, adhesive, aqueous coating compositions, solvent based coating compositions or dyes. The microporous material is laminated to a sheet material comprising woven fabric, nonwoven fabric, knitted fabric, fabrics, polymer film, metal foil, foam, or two or more of their mixtures. The first heated environment is a first extruder and the shaping of the first melt mixed composition is accomplished by extruding the first melt mixed composition through a die, and the second heated environment is a second extruder and the shaping of the second melt mixed composition is accomplished by extruding the second melt mixed composition through the die. The step of cooling the multilayered sheet further comprises casting the multilayered sheet onto a surface of a quench wheel or casting the multilayered sheet into a quench bath after crystallizing at least a portion of the first nucleating agent and the second nucleating agent, thus cooling the multilayered sheet to induce crystallization of the first ethylene chlorotrifluoroethylene copolymer and the second ethylene chlorotrifluoroethylene copolymer. Preferred Components: The diluent comprises a material comprising sebacic acid ester, phthalic acid ester, trimellitic acid ester, adipic acid ester, phosphoric acid ester azelaic acid ester, and two or more of their mixtures, where the weight ratio of ethylene chlorotrifluoroethylene copolymer copolymer/diluent in the melt mixed composition is 70/30-30/70. The sebacic acid ester is dibutyl sebacate. The phthalic acid ester is dioctyl phthalate, and/or diethyl phthalate. The average pore size of the microporous material is 0.01-10 micrometers. The first microporous material and the second microporous material comprise different average pore sizes. The composite material further comprises: a third layer affixed to the second layer; and a fourth layer affixed to the third layer, where the third and fourth layer comprise the microporous material. The nucleating agent is a copper phthalocyanine pigment, or bicyclo(2.2.1)heptane-2,3-dicarboxylic acid, disodium salt.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The nucleating agent is a fluoropolymer having a crystallization temperature higher than the crystallization temperature of the ethylene chlorotrifluoroethylene copolymer. The fluoropolymer is copolymers of tetrafluoroethylene and ethylene, copolymers of tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride, copolymers of tetrafluoroethylene and hexafluoropropylene, and two or more of their mixtures. The first nucleating agent is a fluoropolymer having a crystallization temperature higher than the crystallization temperature of the first ethylene chlorotrifluoroethylene copolymer, and cooling the multilayered sheet comprises crystallizing at least a portion of the first nucleating agent before crystallizing the first ethylene chlorotrifluoroethylene copolymer. The second nucleating agent is a fluoropolymer having a crystallization temperature higher than the crystallization temperature of the second ethylene chlorotrifluoroethylene copolymer, and cooling the multilayered sheet comprises crystallizing at least a portion of the second nucleating agent before crystallizing the second ethylene chlorotrifluoroethylene copolymer. The microporous material further comprises: a third layer affixed to the second layer, the third layer comprised of a third spherulitic matrix comprising third ethylene chlorotrifluoroethylene copolymer and third pores extending through the third spherulitic matrix and having an average pore size of greater than 0.01 micrometer, and third nucleating agent substantially uniformly dispersed within the third ethylene chlorotrifluoroethylene copolymer; and a fourth layer affixed to the third layer, the fourth layer comprised of a fourth spherulitic matrix comprising fourth ethylene chlorotrifluoroethylene copolymer and fourth pores extending through the fourth spherulitic matrix and having an average pore size of greater than 0.01 micrometer, and fourth nucleating agent substantially uniformly dispersed within the fourth ethylene chlorotrifluoroethylene copolymer. EXAMPLE - Melt blended composition (comprising Halar 902 ECTFE copolymer (RTM: Partially fluorinated semi-crystalline polymer), dibutyl sebacate (0.22 wt.%) and olefin/blue nucleating agent (2.78 wt.%)) was extruded through a hollow fiber die and casted into a water-filled quench bath maintained at 49 degrees C to give a microporous ethylene chlorotrifluoroethylene hollow fiber.