Poly(butylene terephthalate)/organoclay nanocomposites prepared by in situ interlayer polymerization and its fiber (II)
- Authors
- Chang, JH; An, YU; Kim, SJ; Im, S
- Issue Date
- Sep-2003
- Publisher
- ELSEVIER SCI LTD
- Keywords
- PBT nanocomposite fibers; in situ interlayer polymerization; organoclay
- Citation
- POLYMER, v.44, no.19, pp 5655 - 5661
- Pages
- 7
- Journal Title
- POLYMER
- Volume
- 44
- Number
- 19
- Start Page
- 5655
- End Page
- 5661
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/27024
- DOI
- 10.1016/S0032-3861(03)00613-X
- ISSN
- 0032-3861
1873-2291
- Abstract
- Intercalated nanocomposites with poly(butylene terephthalate) (PBT) incorporated between the montmorillonite layers were synthesized from dimethyl terephthalate and 1,4-butane diol by using an in situ interlayer polymerization. The PBT nanocomposites were melt-spun at different organoclay contents to produce monofilaments. The samples were characterized by using wide angle X-ray diffraction, electron microscopy, thermal analysis, and tensile testing. The extent of the clay layer in the PBT was confirmed by using X-ray diffraction and electron microscopy, and the clay layer was found to be highly dispersed on a nanometer scale. The addition of only a small amount of organoclay was enough to improve the thermo-mechanical properties of the PBT hybrid fibers. The hybrids were extruded with various draw ratios (DRs) to examine the tensile mechanical property of the fibers. At DR = 1, the ultimate tensile strength of the hybrid fibers increased with the addition of clay up to a critical content and then decreased. However, the initial modulus monotonically increased with increasing amount of organoclay in the PBT matrix. When the DR was increased from I to 6, for example, the strength and the initial modulus values of the hybrids containing 3 wt% organoclay decreased linearly. (C) 2003 Elsevier Ltd. All rights reserved.
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