CAJ | 학술논문

以疏水性、大比表面积SiO2为载体，在钛酸四丁酯[Ti（OBu）4]的水解过程中加入冰乙酸（HOCA），并改变n（H2O）/n[Ti（OBu）4]和n[Ti（OBu）4]/n（HOCA），调节Ti（OBu）4水解速率和pH值，采用缩聚合制备了聚丁二酸丁二酯（PBS）用Ti-Si复合催化剂。用该Ti-Si复合催化剂合成的PBS的特性黏数为1.74g/dL，羧基含量为31mmol/kg，熔融温度为115.1℃，结晶温度为74.3℃，色相L=81.3，B=4.36。所制Ti-Si复合催化剂优于生产PBS的常用催化剂。
이소수성、대비표면적SiO2위재체，재태산사정지[Ti（OBu）4]적수해과정중가입빙을산（HOCA），병개변n（H2O）/n[Ti（OBu）4]화n[Ti（OBu）4]/n（HOCA），조절Ti（OBu）4수해속솔화pH치，채용축취합제비료취정이산정이지（PBS）용Ti-Si복합최화제。용해Ti-Si복합최화제합성적PBS적특성점수위1.74g/dL，최기함량위31mmol/kg，용융온도위115.1℃，결정온도위74.3℃，색상L=81.3，B=4.36。소제Ti-Si복합최화제우우생산PBS적상용최화제。
The titanium-silicate compound catalyst used for synthesis of poly(butylene succinate) (PBS) via polycondensation was prepared through tetrabutyl titanate hydrolysis with hydrophobic silicon dioxide having large surface area as the carrier and glacial acetic acid in the process by changing the molar ratio of water to tet-rabutyl titanate and tetrabutyl titanate to glacial acetic acid in order to regulate the hydrolysis rate and pH value. The results show that the PBS synthesized with the catalyst has intrinsic viscosity of 1.74 g/dL, carboxyl content of 31 mmol/kg, melting temperature of 115.1 ℃, crystalline temperature of 74.3 ℃, and hue L of 81.3 and B of 4.36. This compound catalyst prepared is superior to conventional catalysts for producing PBS.