CAJ | 학술논문

采用熔融酯交换法，以双酚S(BPS)及4，4′-二羟基二苯硫醚、双酚A(BPA)、碳酸二苯酯(DPC)为原料合成主链含S的聚碳酸酯(PC)。考察了碱金属的乙酸类化合物及有机胺类化合物的催化作用，结果显示，乙酸钠的催化效果较好，采用碳酸钠、甲醇钠、氢氧化钠为催化剂时，其催化效果与乙酸钠相差不大，催化剂与BPA反应生成的钠盐可能真正起催化作用，其中以碳酸钠为催化剂时所得PC的透明性最好。当BPS，BPA与DPC的物质的量之比为0.1∶0.9∶1.08时，得到数均分子量(Mn)为24748、重均分子量(Mw)为50033、多分散系数(PDI)为2.02的PC。随着BPS用量的增加，难以获得高分子量PC，进一步考察了4，4′-二羟基二苯硫醚对合成PC的影响，结果发现，与BPS相比，4，4′-二羟基二苯硫醚的反应活性较好，当其加入量较多甚至全部取代BPA时，仍能得到分子量较高的PC。
채용용융지교환법，이쌍분S(BPS)급4，4′-이간기이분류미、쌍분A(BPA)、탄산이분지(DPC)위원료합성주련함S적취탄산지(PC)。고찰료감금속적을산류화합물급유궤알류화합물적최화작용，결과현시，을산납적최화효과교호，채용탄산납、갑순납、경양화납위최화제시，기최화효과여을산납상차불대，최화제여BPA반응생성적납염가능진정기최화작용，기중이탄산납위최화제시소득PC적투명성최호。당BPS，BPA여DPC적물질적량지비위0.1∶0.9∶1.08시，득도수균분자량(Mn)위24748、중균분자량(Mw)위50033、다분산계수(PDI)위2.02적PC。수착BPS용량적증가，난이획득고분자량PC，진일보고찰료4，4′-이간기이분류미대합성PC적영향，결과발현，여BPS상비，4，4′-이간기이분류미적반응활성교호，당기가입량교다심지전부취대BPA시，잉능득도분자량교고적PC。
Sulfur-containing polycarbonate was synthesized by melt transesterification of bisphenol S (BPS),4, 4′-dihydroxydiphenyl sulfide,bisphenol A(BPA) and diphenyl carbonate(DPC). Different catalysts,i.e. alkali metal acetate compounds and organic amine compounds were mainly investigated,in which sodium acetate performed the best catalystic effect. Meanwhile,a series of other sodium salt,i.e. sodium carbonate,sodium methoxide and sodium hydroxide were also studied. The catalytic effect of these sodium salt were similar to sodium acetate,which might be attributed by the reason that a intermediate sodium salt formed by the reaction of catalyst with BPA played a real catalytic role in the reaction. Due to a better transparent properties performed when using sodium carbonate as catalyst,the process condition were investigated using sodium carbonate with the amount of substance ratio of BPS,BPA and DPC being 0.1∶0.9∶1.08,and the polycarbonate with number-average molecular weight (Mn) of 24 748,weight-average molecular weight (Mw) of 50 033,polydispersity (PDI) of 2.02 is obtained. Besides,when the content of BPS is increased,it is unavailable to get high molecular weight of PC,so 4,4′-dihydroxydiphenyl sulfide was explored in this melt transesterification copolymerization. Compared to BPS,4,4′-dihydroxydiphenyl sulfide displayes higher reactivity,a high molecular weight is also obtained when the addition amount is much more or competely replacing BPA.