폴리스티렌 마크로마를 이용한 PAr-g-PS의 합성과 PBT/PPO합금에서 상용화제로의 이용

안태완; 임채익; 정한모

Polymer(Korea), Vol.19, No.4, 415-422, July, 1995

Export Citation

폴리스티렌 마크로마를 이용한 PAr-g-PS의 합성과 PBT/PPO합금에서 상용화제로의 이용

PAr-g-PS from Polystyrene Macromonomer : Synthesis and Its Use in PBT/PPO Alloy as Compatibilizer

안태완, 임채익, 정한모

초록

수평균 분자량이 10,000인 말단에 두개의 히드록시기를 갖는 폴리스티렌(PS) 마크로모노머를 사용하여 PS가 그라프트된 polyarylate (PAr-g-PS)를 합성하고 열적성질을 조사하였다. PAr-s-PS는 PAr 영역의 유리전이온도(T_g)와 PS 영역의 T_g가 분리되어 나타나는 상분리 거동을 보였다. PAr-g-Ps/poly(butylene terephthalate) (PBT) 이원블렌드에서 PAr 세그먼트는 PBT와 상용성을 가졌으며, PAr-g-PS는 PBT의 결정화를 방해하였다. PAr-g-Ps/poly(2,6-di-methyl-1,4-phenylene oxide) (PPO) 이원블렌드에서 PS 세그먼트는 PPO와 상용성을 가졌다. PBT/PPO 블렌드 계에서 PAr-g-PS의 상용화 작용은 열적성질과 모폴로지등으로 부터 관찰할 수 있었다.

Polyarylate (PAr) grafted with polystyrene (PAr-g-PS) was synthesized using dihydroxy-terminated polystyrene (PS) macromonomer of which number average molecular weight was 10,000. Phase separation between the PAr-rich phase and the PS-rich phase in the PAr-g-PS was observed from thermal property measured by differential scanning calorimeter. In the PAr-g-PS/poly(butylene terephthalate) (PBT) binary blend, PAr segment was miscible with PBT and crystallization was hindered by PAr-g-PS. In the PAr-g-PS/poly(2,6-dimethy-1,4-phenylene oxide) (PPO) binary blend PS segment was miscible with PPO. The compatibilizing effect of PAr-g-PS in the PBT/PPO blend was observed in thermal property and morphology.

Keywords:PS macromonomer;graft copolymer;blend;compatibilizer

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[14] Ahn TO, Ha YC, Oh MH, Lee SS, Lee SW, Jeong HM, J. Macromol. Sci.-Phys., in press

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[18] Ahn TO, Lee S, Jeong HM, Cho K, Angew. Makromol. Chem., 192, 133 (1991)