School of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Seoul 08826, Korea
*Department of Chemical Engineering, Soongsil University, 369 Sangdo-ro, Seoul 06978, Korea
서울대학교 화학생물공학부, *숭실대학교 화학공학과
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Polyketone (PK) is a polymer material with various excellent properties, but its rapid crystallization rate presents limitations by reducing processability. In this study, polyamide 6 (PA6), known for its good miscibility with PK, was introduced in the form of a blend to effectively control the crystallization rate of PK. The non-isothermal crystallization kinetics of PK/PA6 blends were analyzed using differential scanning calorimetry (DSC), and the crystal growth rate and morphology were observed using polarized optical microscopy (POM). The results showed that PA6 can act as a dual-function additive that either retards or promotes the crystallization of PK depending on its content in the blend. These findings demonstrate that PA6 is an effective additive capable of precisely controlling the crystallization behavior of PK.
폴리케톤(PK)은 다양한 우수한 물성을 가진 고분자 소재이지만, 빠른 결정화 속도로 인해 가공성이 저하되는 한계를 지닌다. 본 연구에서는 PK의 결정화 속도를 효과적으로 조절하기 위해 상용성이 우수한 폴리아마이드 6(PA6)를 블렌드 형태로 도입하였다. 시차주사열량계법(DSC)으로 PK/PA6 블렌드의 비등온 결정화 동역학을 분석하였으며, 편광현미경(POM)을 이용해 결정 성장 속도 및 결정 구조의 변화를 관찰하였다. 분석 결과, PA6는 첨가량에 따라 PK의 결정화 속도를 지연 또는 촉진시키는 이중적인 역할을 수행할 수 있으며, PK의 결정화 거동을 정밀하게 조절할 수 있는 유효한 첨가제임을 확인하였다.
Keywords: polyketone, polyamide 6, polymer blends, non-isothermal crystallization behavior, miscibility.
2025; 49(4): 524-529
Published online Jul 25, 2025
School of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Seoul 08826, Korea
*Department of Chemical Engineering, Soongsil University, 369 Sangdo-ro, Seoul 06978, Korea