Phthalate plasticizers such as DBP, DEHP, and DINP have been traditionally employed to impart flexibility towards poly(vinyl chloride) (PVC). Recently, the cyclohexanedicarboxylate plasticizer containing cyclohexane structure, namely DINCH(diisononyl cyclohexane-1,2-dicarboxylate), has been commercialized by german company, BASF, and recognized as an eco-friendly plasticizer showing minimal human and enviromental toxicity. In this study, we synthesized 4 different 1,4-cyclohexanedimethanol bis(aliphatic carboxylate) plasticizers employing 1,4-cyclohexanedimethanol and 4 different aliphatic acids (butyric acid, hexanoic acid, octanoic acid, and decanoic acid) via esterification reaction. The newly synthesized 4 kinds of plasticizers were structurally characterized by FTIR and NMR, and were employed to make various PVC samples. The mechanical and thermal properties of the PVC samples were characterized by UTM, TGA, and DMA. The plasticizer migration properties of PVC samples were also investigated in various solvents

Poly(vinyl chloride)(PVC) 수지에 연성을 부여하기 위해 전통적으로 DBP, DEHP, DINP 등과 같은 phthalate계 가소제가 사용되어 왔다. 최근에는 시클로헥산 구조를 가지는 cyclohexanedicarboxylate계 가소제인 DINCH (diisononyl cyclohexane-1,2-dicarboxylate)가 독일의 BASF사로부터 생산되어 인체 및 환경 독성이 매우 적은 친환경 가소제로써 주목을 받고 있다. 본 연구에서는 시클로헥산 구조를 갖는 1,4-cyclohexanedimethanol과 4종의 aliphatic acid(butyric acid, hexanoic acid, octanoic acid 및 decanoic acid)의 에스터화 반응을 통해 4종의 1,4-cyclohexanedimethanol bis(aliphatic carboxylate)를 합성하였다. 합성된 가소제 4종은 FTIR과 NMR을 이용하여 구조 분석하였고, PVC 수지에 적용하여 다양한 PVC 배합 시편을 제작하였다. 가소제 함유 PVC 샘플은 UTM, TGA, 및 DMA 등을 이용하여 기계적, 열적 특성에 대해 조사하였고, 다양한 용매 조건에서 가소제의 이행성을 관찰하였다

Keywords: poly(vinyl chloride), plasticizer, 1,4-cyclohexanedimethanol, aliphatic acid, esterification