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《含S双酚A型聚碳酸酯的制备与研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第43卷,第4期工程塑料应用VoIl43.NO.42015年4月ENGINEERINGPLASTICSAPPLICATIONApr.2015doi:lO.3969/j.issn.1001—3539.2015.04.001含S双酚A型聚碳酸酯的制备与研究张利芬1,31杨先贵-一,张华,姚洁,王公应L(1.中国科学院成都有机化学研究所,成都610041;2.中国科学院成都有机化学有限公司,成都610041;3.中国科学院大学,北京100049)摘要: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
2、酯(P。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)为24748、重均分子量()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
3、入量较多甚至全部取代BPA时,仍能得到分子量较高的PC。关键词:聚碳酸酯;双酚S;4,4二羟基二苯硫醚;熔融酯交换.中图分类号:TQ323.4+1文献标识码:A文章编号:1001-3539(2015)04—0001—06StudyonPreparingSulful-ContainingBisphenolAP0lycarb0nateZhangLifen·3YangXiangui’2ZhangHua,2YaoJie'2WangGongying’f1.ChengduInstituteofOrganicChemistry,ChineseAcademyofSciences,Chen
4、gdu610041,China;2.ChengduOrganicChemicalsCo.,Ltd,,ChineseAcademyofSciences,Chengdu610041,China;3.UniversityofChineseAcademyofSciences,Beijing100049,China)Abstract:Sulfur—containingpolycarbonatewassynthesizedbymelttransesterificationofbisphenolS(BPS),4,4'-dihydroxydiphenylsulfide,bisphenol
5、A(BPA)anddiphenylcarbonate(DPC).Differentcatalysts,i.e.alkalimetalacetatecompoundsandorganicaminecompoundsweremainlyinvestigated,inwhichsodiumacetateperformedthebestcatalysticefect.Meanwhile,aseriesofothersodiumsalt,i.e.sodiumcarbonate,sodiummethoxideandsodiumhydroxidewerealsostudied.Thec
6、atalyticefectofthesesodiumsaltweresimilartosodiumacetate,whichmightbeattributedbythereasonthataintermediatesodiumsaltformedbythereactionofcatalystwithBPAplayedarealcatalyticroleinthereaction.Duetoabettertransparentpropertiesperformedwhenusingsodiumcarbonateascatalyst,theprocessconditionwe
7、reinvestigatedusingsodiumcarbonatewiththeamountofsubstanceratioofBPS.BPAandDPCbeing0.1:0.9:1.08。andthepolycarbonatewithnumber-averagemolecularweight()of24748,weight—averagemolecularweight()of50033,polydispersity(PDI)of2.02isobtained.Besides,whenthecontentofBPSisincr
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