含多羟基功能基树脂的合成及其与硼酸螯合性能的研究

合成了数种含有多羟基醇单醚功能基的树脂，研究了反应条件及树脂的吸附性能。     

Behavioral and electrophysiological study of antifeedant mechanisms associated with polyhydroxy alkaloids

Eleven polyhydroxy alkaloids of plant origin were tested for anti-feedant effects against larvae of the lepidopteransSpodoptera littoralis, Spodoptera frugiperda, Heliothis virescens, andHelicoverpa armigera. Data from behavioral and electrophysiological investigations were correlated to reveal information on the mode of action of the antifeedants. The pyrrolidine DMDP was an effective antifeedant for all four species, whereas the piperidines fagomine and XZ-1 and the pyrrolizidine alexine were all ineffective as antifeedants. The activity of the pyrrolidines CYB-3 and DAB-1, the piperidines DNJ, DMJ, and BR1, and the bicyclic octahydroindolizine castanospermine varied among species. The investigation focuses on the structural similarities between some of the alkaloids and some common phagostimulatory sugars and illustrates a neural interaction involving the neurons that are differentially responsive to alkaloids and sugars. InS. littoralis, the neurons responding specifically to the alkaloids DMDP, DAB-1, and castanospermine and to the sugars fructose, sucrose, and glucose are more active when the compounds are applied singly than when an alkaloid and a sugar are applied together. The implications for the occurrence and functioning of different sugar receptor sites are discussed.     

可再生多羟基醇压裂液体系的流变特性研究

根据多羟基醇压裂液体系的特点,首次对该压裂液体系的回收利用进行了研究。制备出稳定的有机硼交联聚乙烯醇可再生多羟基醇压裂液体系,并考察了不同再生次数的多羟基醇压裂液体系的流变特性,探讨了再生次数对于多羟基醇压裂液体系流变性能的影响。结果表明,通过调节体系的pH值,控制多羟基醇压裂液体系交联程度,可达到破胶和再生的目的,但随着再生次数的增加,压裂液体系的耐温抗剪切性能会随之下降,冻胶的黏弹性能也降低。     

Glass Transition Explanation for the Effect of Polyhydroxy Compounds on Protein Denaturation in Dehydrated Solids

Dehydrated proteins are frequently subjected to thermal stress in the presence of other components. The effect such substances may have upon protein structure, and therefore function, has not been fully investigated. Thus, the effect of added polyhydroxy components on the denaturation of lyophilized β-lactoglobulin, ovalbumin, and ribonuclease, as determined by differential scanning calorimetry, was evaluated. The denaturation temperature, T_m, of the globular proteins decreased in the dry state after the addition of sucrose, sorbitol, or glycerol. The thermal stability (based on T_m) of the dehydrated proteins appeared to correlate with the glass transition temperature (T_g) of the polyhydroxy component, which was assumed to be related to the T_g of the mixture. The lower the T_g of the component, the greater was the degree of protein destabilization. Thus, glass transition data may be used to predict the effect that a component would have on denaturation of dehydrated proteins at elevated temperatures.     

新型坡缕石/多羟基树状高分子复合材料的制备及性能研究

以NaBH4还原水杨醛席夫碱修饰坡缕石为核,采用发散法通过与三聚氯氰、4-氨甲基哌啶、水杨醛、NaBH4还原的重复反应制备了1.0~2.0 G多羟基树状高分子/坡缕石复合材料,利用红外光谱、元素分析、热重对复合材料结构进行了表征,扫描电子显微镜测定了复合材料的外部形貌。吸附实验表明：该复合材料对废水中有机酚、重金属离子的吸附能力优于坡缕石原土,10 mg第二代树状高分子/坡缕石在293K,对初始质量浓度是50 mg/L的对硝基苯酚、对苯二酚、Pb(II)的吸附量分别是35.3 mg/g、34.02 mg/g、44.8 mg/g,吸附动力学拟合结果符合拟二级动力学方程。     

坡缕石/多羟基树状高分子复合材料的制备及性能

以Na BH4还原水杨醛席夫碱修饰坡缕石为核,采用发散法通过与三聚氯氰、4-氨甲基哌啶、水杨醛、Na BH4还原的重复反应制备了1.0~2.0 G多羟基树状高分子/坡缕石复合材料,利用红外光谱、元素分析、热重对复合材料结构进行了表征,扫描电子显微镜测定了复合材料的外部形貌。吸附实验表明:该复合材料对废水中有机酚、重金属离子的吸附能力优于坡缕石原土,10 mg第二代树状高分子/坡缕石在293 K,对初始质量浓度是50mg/L的对硝基苯酚、对苯二酚、Pb(Ⅱ)的吸附量分别是35.3、34.02、44.8 mg/g,吸附动力学拟合结果符合拟二级动力学方程。     

利用废铅膏制取超细PbO粉体工艺

在系统总结废铅酸蓄电池铅膏回收技术的基础上,本文提出了废铅膏—脱硫脱氧-碱性多羟基体系浸出-净化-电解沉积-转化—细碎工艺生产超细PbO粉体的工艺技术。该工艺与传统火法冶炼流程工艺相比,具有以下优点:①彻底消除了高温熔炼排放SO2、铅尘、铅渣等污染;②过程清洁,大大降低了能耗;③直接制备超细PbO粉体,可以直接作为生产蓄电池的铅粉,为废铅膏的循环利用提供了一种新思路。     

多羟基磺胺席夫碱对碳酸酐酶抑制活性的研究

磺胺席夫碱是较好的碳酸酐酶抑制剂,然丽对于多羟基磺胺席夫碱的抑制活性研究较少。文章采用微波辅助合成法设计合成了18种多羟基磺胺席夫碱,通过测定该系列化合物对牛碳酸酐酶活性半抑制浓度来评定其抑制活性,探索化合物分子中羟基对碳酸酹酶催化活性的影响。结果表明,对照的4－羟基苯甲醛-4－氨基苯磺酰胺席夫碱（化合物5）对牛红细胞...     

碳纤维织物基形状记忆复合材料的制备及其性能

为解决碳纤维织物基形状记忆复合材料体系中催化剂存在对其回收利用的影响,通过基于动态酯交换反应的环氧-酸酐体系作为形状记忆功能体(BMT),以多羟基反应单体三羟甲基丙烷(TMP)作为反应活性剂,与碳纤维织物整理复合制备出无催化剂可调控的形状记忆复合材料。结果表明,这种多羟基催化碳纤维织物基复合材料(C-BMT)不仅具有良好的形状记忆的能力,而且其物理性能也十分优异,特别是拉伸强度较形状记忆功能体BMT提高了24倍。另外,这种复合材料中不存在催化剂,解决了催化剂对其回收利用产品应用的限制,对未来高性能碳纤维织物基复合材料开发和回收利用的实现具有重要意义。     

LHE聚合羟基羧酸盐水质稳定剂在硝酸厂循环水系统的运用设想

介绍LHE聚合羟基羧酸盐水质稳定剂的作用机理以及在其他化工厂循环水系统中的应用实例,设想将LHE聚合羟基羧酸盐水质稳定剂用于我公司硝酸厂循环水系统,将表冷液治理后低浓度氨氮淡水作为循环水系统的补充水,达到氨氮零排放.