醚

This task mostly synthesis dialkyl disulfonic sodium diphenyl methane and dialkyl disulfonic sodium diphenyl aether gemini surfactants.

本论文合成了二苯甲烷类与二苯醚类两类双烷基双磺酸基阴离子双子表面活性剂。

The poisoning effects of alkyl sulfur compounds on the reactivity of isoprene hydrogenation over supported Pd catalyst are more and more serious with the decrease of the molecular mass of alkyl thiols and dialkyl disulfides.

乙硫醇和二甲基二硫醚使Pd／树脂催化剂中毒的机理是，它们分别在催化剂上发生SH和S-S键断裂，并与Pd形成带烷基基团的S-Pd吸附络合物，致使催化剂上异戊二烯选择加氢活性降低。

In this study,diallyl sulfides in garlic powder were identified via the introduction of Ag induced-ionization.

烯丙基硫化物由于弱极性不电离，本实验利用Ag+柱后诱导电离对大蒜粉剂中的含硫化合物进行质谱定性，并以二烯丙基三硫醚为参比，对各种二烯丙基含硫化合物进行定量测定。

This study focuses on the configuration performance and dialyze performance of polyethersulfone membrane material.

本实验重点对聚醚砜膜材料的结构性能和透析性能进行研究。

Benzyl acetate was synthesized with dibenzyl ether and carboxylic anhydrides as raw material and solid super acid SO 2-_4/TiO_2 as catalyst.

以固体超强酸SO2 -4/TiO2 为催化剂，二苄醚和乙酸酐为原料合成乙酸苄酯，并考察了影响反应的主要因素。

Dibenzyl sulfoxide and dibenzyl sulfone were synthesized from dibenzyl sulfide oxidated with H 2O 2 without catalyst.

在无催化剂条件下利用过氧化氢氧化二苄基硫醚合成了二苄基亚砜和二苄基砜。

The cage effect of Gn potassium aqueous solution calculated by theα-cleavage photoreaction product distribution of substituted dibenzyl ketone was 14%, 18%, 22% and 42% for generations 1-4, respectively, which indicates that G4 takes a more close spherical shape with strong confine ability.

研究结果表明，羧基为末端基团的芳醚树枝形聚合物Gn (n = 1-4)钾盐水溶液笼效应随代数增加而增大，从G1到G4，笼效应分别为14%、18%、22%和42%，树枝形聚合物3代到4代从开放结构变为近乎球形的封闭结构的显著变化使G4表现出明显高于其他三代的笼效应。

In this paper, the thermally reversible crosslinking reaction and the properties of synthesized TPE based on the reactions of chlorine containing polymers such as PVC , chlorined polyethylene , epichlorohydrin rubber and acrylic rubber with salts of dicyclopenladienyl dicarboxylate crosslinking agents were studied.

本研究以环戊二烯二酸盐衍生物作热可逆共价交联剂，通过与聚氯乙烯、氯化聚乙烯、氯醚橡胶和丙烯酸酯橡胶等含氯聚合物的脱MX酯化反应来实现共价关联，并制取相应的新型TPE。

Polyether based polyurethanes are among the most interested polymers which have been used suitably for the biomedical applications, especially in cardiovascular system. In order to meet the requirements of the artificial heart program in our college, two sorts of polyether based polyurethane elastomers, PU-BD and PU-MC, were synthesized both based on prepolymer formed by the reaction of polytetramethylene ether glycol and diphenyl methane-4, 4′-diisccyanate, with 1, 4-butanediol and 3, 3′-dich...

本文介绍了两种聚醚型聚氨酯弹性体PU—BD和PU—MC的合成路线，两种弹性体的物理机械性能(曲挠、抗张强度、伸长率等)的测试结果，两种弹性材料的生物相容性试验(凝血时间，慢性组织相容性、细胞毒性等)及其结果、各种试验结果表明，这两种聚氨酯弹性材料的耐曲挠性能和生物相容性都已达到现阶段人工心脏研究工作的要求，为两种有希望的医用高分子材料。

The connectors 2 and 5 have high thermal stability, but their solubility in most organic solvents, such as THF or diethyl ether, is very limited.

连接器2和5有高耐热性，但他们的可溶性在多数有机溶液，例如THF或二乙基醚，是非常有限的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。