Conjugate fibers

The electrical performance of conjugated fiber composites is investigated in the gelation process in a pol5mier after crosslinking, where the conductive network corresponds to the gel fraction. If a fiber segment is able to conduct it must be connected to the gel in both ends. 

Polymer alloys play an important role in the industrial production of high-impact polymers (see Chapter 6). They can be produced by the mixing of solutions of appropriate polymers or by mixing of the melts. With fibers, a polymer fiber is swollen with an appropriate second monomer and the second monomer is polymerized. Conjugate fibers (see Chapter 12) have a partial polymer alloy character. 

Good bulk and crimp stability can be obtained with bicomponent fibers (also known as conjugated fibers, twin fibers, or fibers of bilateral structure). The two components may lie side by side, and have a nucleus-mantle structure or a matrix-fibrillar (M/F) structure (Figure 12-10). The M/F fibers are known as matrix fibers in the United States and not as bicom-... 

Conjugate fibers n. A two-component fiber with specific ability to crimp on hot or hot/ wet treatment because of differential shrinkage. 

Conjugated fibers with hollow in the cross section are also produced by Toray with the brand name of HC/HCS. By controlling the intrinsic viscosity of polymer, HC/HCS have 3D helical stmctured crimps based on the shrinkage difference of two polyesters [37]. 

Watanabe T, Matsumoto T and Toshikazu A, Heat-evolving heat-absorbing synthetic conjugate fibers for insulative garments , JK6-41818. 

Mitamura H, Synthetic conjugate fibers with latent heat and their manufacture , JK6-200417. 

A PP conjugate fiber with a crystallinity of 30-50% is composed of two crystalline PP grades with different isotactic ratios (under 0.930 and above 0.945) [97] or with two melt flow rate (MRF) ranges (0.5-3.0 and 60-100 respectively) [98 101]. 

Hot-melt adhesive conjugate fibers are composed of two different kinds of POs having different melting points, or of other PO blends, such as PE/PP PE/ polymethylpentene, PP/polymethylpentene [104, 105]. 

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