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      Effect of Spin-Draw Rate and Stretching Ratio on Polypropylene Hollow Fiber Membrane Made by Melt-Spinning and Stretching Method

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          Abstract

          A series of polypropylene hollow fiber membranes was fabricated by melt-spinning and stretching. The crystalline behavior and hard elasticity of precursor hollow fibers were studied by differential scanning calorimetry (DSC), elastic recovery and strain-stress curves. The structure and properties of membranes were investigated in detail by scanning electron microscopy (SEM), optical microscopy, pure water flux, and so on. The results showed that membranes with excellent structure and properties can be obtained at a spin-draw rate of 350 m/min and a stretching ratio of 200 %. The evolution of crystal structure was explored during the annealing and stretching processes by two-dimensional small-angle X-ray scattering (2D-SAXS). Shish-kebab structure was obtained during annealing for hollow fibers at a spin-draw rate of 350 m/min. The crystalline lamellae were destroyed and micropores were formed during the fabrication of membranes by stretching.

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          Most cited references 19

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          Preparation of polyethylene hollow fiber membrane via thermally induced phase separation

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            Structure control of anisotropic and asymmetric polypropylene membrane prepared by thermally induced phase separation

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              Distribution of lamella thicknesses in isothermally crystallized polypropylene and polyethylene by differential scanning calorimetry

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                Author and article information

                Journal
                ipp
                International Polymer Processing
                Carl Hanser Verlag
                0930-777X
                2195-8602
                2 March 2018
                : 33
                : 1
                : 13-19
                Affiliations
                1 National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guizhou University, Guiyang, PRC
                2 College of Materials Science and Metallurgy, Guizhou University, Guiyang, PRC
                Author notes
                [* ] Correspondence address, Mail address: Shuhao Qin, National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guizhou University, Guiyang, PRC, E-mail: shj820423@ 123456sina.cn
                Article
                IPP3303
                10.3139/217.3303
                © 2018, Carl Hanser Verlag, Munich
                Page count
                References: 19, Pages: 7
                Product
                Self URI (journal page): http://www.hanser-elibrary.com/loi/ipp
                Categories
                Regular Contributed Articles

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