Thermal Properties and Flame Retardancy of Poly(amic acid)/organoclay Nanocomposites

Poly(amic acid)/organoclay 나노복합체의 열적특성 및 난연성

  • Kim, Sun (Korea Research Institute of Chemical Technology Reliability Assessment Center) ;
  • Yoon, Doo-Soo (Department of Polymer Science & Engineering, Chosun University) ;
  • Jo, Byung-Wook (Department of Chemical Engineering, Chosun University) ;
  • Choi, Jae-Kon (Department of Polymer Science & Engineering, Chosun University)
  • 김선 (한국화학연구원 신뢰성평가센터) ;
  • 윤두수 (조선대학교 공과대학 응용화학소재공학과) ;
  • 조병욱 (조선대학교 생명화학공학과) ;
  • 최재곤 (조선대학교 공과대학 응용화학소재공학과)
  • Published : 2007.09.29

Abstract

Polyamic acid(PAA)/organoclay nanocomposites containing phosphorous were prepared by solution blending of phosphorylated PAA(PPAA) and organically modified montmorillonite(O-MMT) as a type of layered clays. The nanocomposites were characterized by FT-IR, DSC, TGA, PCFC, SEM, and XRD. The preparation of nanocomposites was confirmed by FT-IR and XRD. SEM pictures showed that the organoclay was dispersed well in the PAA matrix relatively. XRD results indicated that the O-MMT layers were intercalated. The thermal stability and flame retardancy of O-MMT/PPAA nanocomposites were higher than those of pure PAA. PCFC results also showed that the heat release capacity and total heat release values of O-MMT 4 wt%/PPAA-0.2, 0.4, 0.6 composites were decreased with increasing the mole ratio of phosphorous. It was found that the nanocomposite films had the potential to be used as a fire safe material.

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