用红外光谱法对不同温度下处理的酚醛和聚苯乙烯阳离子交换树脂碳化产物的结构基团进行了测试分析。
The structural groups of carbonized products of phenolic aldehyde resin and polystyrene cation exchange resin treated at different temperatures are tested and analyzed with IR method.
同时,上海的研究人员在1973到1975年间着手解析青蒿素的化学结构,他们发现青蒿素具有一个全新且罕见的过氧基团结构。
Meanwhile, researchers working in Shanghai from 1973 to 1975 found that artemisinin has a novel and unusual structure, a so-called peroxide bridge.
20种不同的有机分子结合起来组成多肽链或蛋白质。这20个氨基酸主结构相同,但每种又分别有各自不同的侧基团。
One of the 20 different organic molecules that are joined together to form a polypeptide chain or a protein the twenty amino acids share a common backbone, but each has a specific side-group.
实验结果显示,由于处理后纤维的结构中含有高吸水性的羧甲基基团,处理后的纤维比初始纤维有更高的吸湿性。
Experimental results showed that the treated fibers had much higher hydroscopicity than the untreated ones, due to the highly absorbent carboxymethyl groups in the fiber structure.
本文借助最大重叠杂化轨道理论,研究了卤代甲烷系列分子的红外伸缩频率,基团电负性和质子酸度等分子性质与结构的关系。
The maximum overlap method was used to study the relationships the C-H stretching frequencies, group electronegativities and proton acidity properties and the molecular structure in the halomethanes.
而酰胺型开链配体具有合成简单、结构可调和共轭敏化基团可换等优点,通过调整配体的功能基团可以实现配合物更好的发光性能。
Amide ligands have the advantage in simple synthesis, adjustable structure and changeable sensitive conjugate groups, which make their complexes indicated good luminescence properties.
说明含硅铝酸钠溶液中存在大分子的胶性基团,属于无机高分子溶液,这种网络状“大分子”结构是硅铝酸钠溶液稳定的原因。
It has been proved that colloid units belong inorganic high polymer solution. The structure of network high polymer is why silicon dioxide containing sodium aluminate solution is stable.
研究了不同离子基团的聚酯多元醇和不同软段结构对其干膜物理机械性能和吸水率的影响。
The effects of polyols type and polyols containing different ionic groups on physical mechanical properties of dry films and water absorption were studied.
通过NOESY实验以及偶合常数的分析,确定了其结构中1,10位双键和甲氧基、乙酰氧基、甲基等基团的相对构型。
The relative stereochemistry of the 1, 10-double bond and that of the methoxyl, methyl, and acetoxy groups were determined by NOESY experiments and analyses of the coupling constants.
阐述了酞菁环的电子结构是其具有气敏性的基础,讨论了配合物中的中心原子和取代基团对配合物气敏性的影响。
The fundamental function of the electron structure of the ring skeleton and the influence of central atoms and substituents on gas-sensitivity is illustrated.
这是由于纤维在化学上不活泼,表面能低,表面缺乏极性基团,且是高度对称的亚甲基结构,使得纤维具有很高的结晶度和取向度。
Because the fiber is of chemical inertion, low surface energy, lack of polar groups, and highly symmetric methylene structure, the fiber has a high degree of crystallinity and orientation.
染尘肌体组织在加热过程中,蛋白质类结构对称性降低并逐渐氧化,末端基团如—ch_3,—CH_2振动减弱。
When injected organism tissues were heated, the protein structural symmetry was reduced, oxidated gradually, and the vibration weakened at the end radicel such as -ch3, -ch2.
结构表征表明,有机基团通过硅原子被引入到分子筛骨架中。
Structural characterizations show that the Si atoms with organic groups are introduced into the molecular sieve frameworks.
两性酚醛树脂性能与其分子结构中有机阳离子、有机阴离子基团比例有关。
The proportion of cationic groups and anionic groups influences the properties of amphoteric pherolresin.
塔格糖是果糖的“差向异构体”,在分子水平上,除了第四个碳原子上的羟基和氢基团倒置外,D -塔格糖与D -果糖的结构是一样的。
On a molecular level, D-tagatose is structurally identical to D-fructose, except for an inversion of the hydroxyl and hydrogen groups at the fourth carbon atom.
有机基团在结构上具有连接方式的刚性和立体空间的柔韧性以及较强的配位能力,能在很大程度上调控和修饰无机骨架的结构。
The organic groups can control and modify the structure of inorganic framework, for its rigidity in conjunct mode, flexibility in stereochemistry and strong capability of coordination.
用红外光谱对镍离子印迹聚合物的结构进行表征,红外光谱研究表明聚合物中存在与模板分子相互作用的特征基团。
The structure of polymer was studied by IR spectrometry. The result indicated that some characteristic groups in the ion-imprinted polymer interacted with the template.
结果表明,萃取物中含有脂肪族结构、芳香结构、大量含氧基团,并含有脂环化合物。
The results indicated that extracts contain aliphatic, aromatic and naphthenic compounds and a large amount of oxygen containing group.
同时运用IR和SEM对KAC进行了结构分析,其富含的亲水性离子基团,以及不规则的多网格微观结构可成为高湿环境中长效吸湿剂开发应用的参考依据。
The structure of KAC was characterized by IR and SEM, its rich hydrophilic and ionic groups and irregular network can supply reference for application as long-term desiccant in high humidity.
带有强亲水基团的高分子交联而成圆珠状结构,而具有吸水保水性的高吸水树脂。
With a strong hydrophilic group, macromolecule cross-linked polymer, bead-like structure, a water-absorbing resin with high water absorbing and water keeping.
带有溴基团的结构与尿嘧啶相似。
开展了改性前后煤表面的傅立叶红外光谱分析,结果证明,煤表面电磁改性具有时间效应,电磁场不能永久地改变煤的内部基团微观结构。
The FTIR analysis of surfaces of tested anthracites suggests that the induced modification is time dependent and can not permanently change the surface microstructure.
对天然彩色棉纤维结构的初步分析发现,天然色彩存在于纤维次生胞壁内,发色基团与羰基有关。
On the basis of structure analysis of colored cotton, it is found that natural color is existed in the secondary cell wall and color group is in line with carbonyl.
测定了接枝物的分子量,计算了接枝物的结构单元数,认为每个氯化聚丙烯链上接上的马来酸酐基团个数在30~67之间;
Construction unit number was calculated by determining molecular weight. About 30-67 MAH units are grafted to a CPP chain.
该聚合物的结构特征是含有硅原子和芳炔基团的超支化结构。
The polymer is structurally characterized in that the polymer is a hyper-branched structure containing silicone atoms and aryne group.
通过红外光谱图的分析验证了产品结构中具有阳离子基团,并对产品的应用性能进行了研究。
The cationic group in the structure of product is proved by the aid of IR spectrogram analysis, and the product is applied in leather manufacture.
已开发出的解码软件成功地实现了结构代码向联结矩阵的转化,从而为基团贡献法组合相应的基团奠定了基础。
A decoding software system is also developed, which can be used to convert the structure code concerned into connection matrix method.
该乳化剂的结构具有阴离子和非离子基团,不需要通过复配就可达到这两种基团的协同作用。
The structure of the emulsifier is provided with the anion and the nonionic groups, and the synergic action of the two groups can be achieved without remixing.
说明了解决此问题的关键在于从胶粘剂的化学结构入手,增加活性基团,以提高可染性和粘接强度。
The key to solve this issue depends on from the chemistry structure of adhesive starting with, and increases the active base in order to raise dyeing behaviour.
通过化学反应在PP分子结构中引入极性基团是达到PP功能化的根本途径。
Introducing polar group onto molecular structure of PP via chemical reaction is deemed as a primary means for functionalization of PP.
应用推荐