Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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A Study on the High Performance Nanocomposite Fibers Based on Polybenzoxazoles(I)-Synthesis and Characterization of Polyhydroxyamide-clay Nanocomposites-

폴리벤즈옥사졸계 고성능 나노복합체 섬유에 관한 연구(I) - 폴리히드록시아미드-클레이 나노복합체의 제조와 특성분석 -

  • Baik, Doo-Hyun (Department of Textile Engineering, Chungnam National University) ;
  • Lee, Won-Ok (Department of Textile Engineering, Chungnam National University)
  • Published : 2005.10.01
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Abstract

In the present study we investigated a clay nanocomposite based on polybenzoxazole (PBO) in order to get high performance PBO nanocomposite fibers. We synthesized polyhydroxyamide (PHA), a precursor polymer to PBO, by low temperature polymerization of dihydroxybenzidine and isophthaloyl chloride. Three kinds of clay dispersions were prepared by in-situ polymerization method, direct mixing of PHA and organo-clay, and mixing with sonication, respectively. X-ray diffraction experiment revealed that PHA-clay nanocomposite showed exfoliation in both direct mixing method and mixing with sonication method. On the other hand, a PHA-clay composite prepared by in-situ method showed no intercalation and exfoliation. TGA and DSC study revealed that the PHA-clay nanocomposites could cyclize at lower temperature compared with PHA. This implies that clay nanoparticles affect the thermal cyclization reaction of PHA lowering the cyclization temperature.

Keywords

References

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