含偶氮侧墓的聚酯型热致液晶高分子非线性光学材料的合成与表征(英)

采用高温溶液缩聚方法合成了一系列含偶氮侧基的聚酯型热致液晶高分子,利用红外光谱、元素分析、TG－DTA、热台偏光显微镜及X-射线衍射等手段对聚合物的结构、热稳定性、相转变行为及结晶性能进行了研究.结果表明,所合成的各聚合物均为向列相液晶高分子,而且它们均具有较高的玻璃化转变温度及很好的热稳定性.     

Amperometric biosensors sensitive to organic peroxides based on immobilization of redox organic dyes and horseradish peroxidase in polyester ionomer film

Ｐｅｒｏｘｉｄｅｓ Ｂａｓｅｄ ｏｎ Ｉｍｍｏｂｉｌｉｚａｔｉｏｎ ｏｆ Ｒｅｄｏｘ Ｏｒｇａｎｉｃ Ｄｙｅｓ ａｎｄ Ｈｏｒｓｅｒａｄｉｓｈ Ｐｅｒｏｘｉｄａｓｅ ｉｎ Ｐｏｌｙｅｓｔｅｒ Ｉｏｎｏｍｅｒ ＦｉｌｍTX１ＩｎｔｒｏｄｕｃｔｉｏｎＯｒｇ...     

两性聚丙烯酰胺反相胶乳合成的研究

采用氧化还原引发体系 ,丙烯酰胺与丙烯酸钠共聚后 ,经 Mannich改性 ,在反相乳液中制备了两性聚丙烯酰胺 .对其反应条件及乳液稳定性进行了研究 ,结果表明 ,当合成阴离子度为 5% ,采用丙烯酰胺∶甲醛∶二甲胺 (mol) =1∶ 1∶ 1 .2 ,反应温度为 45℃ ,反应时间为 4 h和 p H=5.0的条件下 ,可获得分子量及阳离子度较高 ,同时稳定性较好的胶乳产品 .在造纸工业中 ,它是一种理想的助留助滤剂     

由2,4-吡啶二甲酸构筑的锌的配位聚合物的水热合成及晶体结构

采用水热法合成了一维配位聚合物[Zn2(pydc)2(4,4’-bipy)(H2O)6]n.2nH2O(H2pydc=2,4-吡啶二甲酸,4,4’-bpy=4,4’-联吡啶),并对其进行了元素分析、红外光谱表征和X射线单晶衍射测定.该配合物属于单斜晶系,空间群为P2(1)/c,晶胞参数为:a=10.023(2),b=13.941(3),c=11.239(2),β=106.478(3)°,V=1505.9(5)3,C24H30N4O16Zn2,Mr=761.26,Dc=1.679g/cm3,μ(MoKα)=1.675mm-1,F(000)=216,Z=2,R1=0.0364,ωR2=0.0607.     

碳纤维加固板的应用研究

研究了碳纤维(CERP)加固在国内外的应用状况,阐述碳纤维加固板的技术研究、理论研究、工程应用和面临的问题,并展望其发展前景。     

新型1,4-萘二甲酸铁多孔配位聚合物的合成和晶体结构及其吸附性质

用水热法在150℃下由FeSO4·7H2O和1,4-萘二甲酸(1,4-H2NDC)合成了一个新型的配位聚合物Fe(oH)(1,4-NDC)·2H2O.单晶结构分析表明该化合物为四方晶系,空间群为P42/nmc,晶胞参数a=2.144 7(4)nm,c=0.68849(14)nm,y=3.1669(11)nm3,Z=8,...     

制备聚合硫酸铁的一种新方法

以硫酸亚铁为原料,采用过氧化氢一步氧化法制备聚合硫酸铁絮凝剂。研究了新工艺的反应原理、方法,产品的物理化学性能以及该产品在废水处理中的应用。     

有机聚合物热光效应光电器件研究进展

综述了基于有机聚合物热光效应的各种光电器件的研究进展，重点介绍了聚合物热光开关和聚合物热光衰减器的发展状况、技术特点和发展趋势，并提出了一种新的利用有机聚合物热光效应研制非制冷热成像器件的热探测机制。     

Experimental study on uniaxial time-dependent ratcheting of a polyetherimide polymer

The uniaxial ratcheting behavior of a polyetherimide （PEI） polymer ＇TECAPEI＇ was studied using stress-controlled cyclic loading at room temperature, including both cyclic tension-compression with non-zero tensile mean stress and tension- unloading tests. The experimental observations were focused on the time-dependent ratcheting of the PEI polymer revealed in cyclic tests at diverse stress rates and with different peak stress holding times. The results showed that the PEI polymer shows obvious ratcheting deformation; i.e., the ratcheting strain accumulates progressively in the tensile direction during stress- controlled cyclic tests with non-zero mean stress. The ratcheting is highly dependent on the applied mean stress and stress am-plitude, and is also characterized by a strong time-dependency during the cyclic stressing at diverse stress rates and with different peak stress holding times. The time-dependent ratcheting of the PEI polymer is caused mainly by its remarkable viscosity. A comparison of the ratcheting occurring before and beyond the ultimate stress point of the PEI polymer showed that the ratcheting beyond the ultimate stress point is more significant than that occurring before that point.     

配位聚合物[Na(5-磺基水杨酸)(H_2O)_2]_n的合成和晶体结构研究

以5-磺基水杨酸为配体,与氢氧化钠在水和甲醇(1:1)混合溶剂中发生反应合成了一个新的配位聚合物[Na(5-磺基水杨酸)(H2O)2]n,并用X-单晶衍射仪对其结构进行了表征。结果表明,该配合物为三斜晶系,P-I空间群,晶胞参数为:a=6.7154(11),b=7.0854(11),c=11.6749(19),α=77.817(2)°,β=83.226(2)°,γ=77.913(2)°,V=529.37(15)3,Z=2,R1=0.0318,wR2=0.0863,F(000)=284.