CAJ | 학술논문

以丁二酸和丁二醇为原料，采用熔融缩聚法合成聚丁二酸丁二醇酯(PBS)，并对 PBS 的合成工艺进行研究．实验结果表明，当醇酸物质的量比为1.10，选择氯化亚锡(SnCl2)和对甲苯磺酸为催化剂，酯化温度在170,℃，缩聚温度在230,℃时，产物的特性黏度较高，副反应较少．通过红外光谱(FTIR)分析，产物为预期的 PBS．运用差示扫描量热仪(DSC)及力学性能分析可得，随着聚酯特性黏度的增大，其熔融焓、结晶温度和结晶度都下降，拉伸强度和断裂伸长率都增大．
이정이산화정이순위원료，채용용융축취법합성취정이산정이순지(PBS)，병대 PBS 적합성공예진행연구．실험결과표명，당순산물질적량비위1.10，선택록화아석(SnCl2)화대갑분광산위최화제，지화온도재170,℃，축취온도재230,℃시，산물적특성점도교고，부반응교소．통과홍외광보(FTIR)분석，산물위예기적 PBS．운용차시소묘량열의(DSC)급역학성능분석가득，수착취지특성점도적증대，기용융함、결정온도화결정도도하강，랍신강도화단렬신장솔도증대．
Poly(butylene succinate)(PBS)was synthesized by melting polycondensation from succinic acid with 1,4-butanediol. The research on the synthesis technology shows the optimal reaction conditions are:the molar ratio of SA to BD is 1∶1.10,the esterification temperature maintains around 170,℃,and the polycondensation temperature maintains around 230,℃ with stannous chloride(SnCl2)and p-toluenesulfonate as catalysts. Under this condition,the product can get higher intrinsic viscosity with fewer side reactions. The IR spectra indicates the products are the expected polymers. Differential scanning calorimetry(DSC)and mechanical property analysis show that with the increase of intrinsic viscosity of PBS,the crystallization temperature(Tc),melting enthalpy(ΔHm)and crystallinity degree(Xc)are decreased,while the tensile strength and elongation at break are increased.