Page 408 - Handbook of Properties of Textile and Technical Fibres
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The chemistry, manufacture, and tensile behavior of polyamide fibers  381























           Figure 12.15 Spherulite.








             1-Fibril,
             2-Crystallites,
             3-Partially extended molecules in the interfibrillar
             regions,
                                                           6
             4-Tie molecules in the interlamellar amorphous
             regions,
             5-Free chain ends,                                 5
             6-Voids and interfibrillar amorphous region
                                                          4
                                                    3
                                                  4

                                      L
                                         l
                                                         2


                                                        d
                                                  1                    10 nm
                                                        D
           Figure 12.16 Morphological model for nylon-6 fiber (Murthy et al., 1990).

           into an oriented fiber structure of increased strength and stiffness. The mechanisms
           governing microstructural rearrangement and orientation here are very complex.
              The structures of drawn and thermally stabilized polyamide fibers are described by
           the complex morphological model shown in Fig. 12.16.
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