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- Mixed polar solvent 混合极性溶剂
- Anionic polyelectrolytes can ionize in polar solvent, forming macromolecule chains with lots of anionic charge. 阴离子型聚电解质在极性溶剂中会发生电离,导致大分子链上带有大量的净负电荷。
- The multiphase copolycondensation of PMDA,BOPDPA and ODA was carried out in polar solvent. 以均酐 (PMDA)、双醚酐 (BOPDPA)和 4 ,4 -二氨基二苯醚 (ODA)为原料 ,在极性溶剂中进行多相共缩聚。
- The paper studied a method of preparing noncovalent molecular imprinting polymer(MIP) in polar solvent. 本文对极性溶剂中非共价型分子烙印聚合物的制备条件进行了研究。
- However when the solvent is isopropyl alcohol or non polar solvent the decomposition value of monocrotophos is about 5% in the same condition. 但用异丙醇或非极性溶剂作溶剂时,在相同的条件下,久效磷的分解率为5%25左右。
- For arginine,the yield was improved to nearly 80% by using weakly polar solvent such as DCM and simultaneously increasing the reaction time to 20 h in the method of acyl chloride. 在酰氯法中;对于精氨酸;选择弱极法溶剂如DCM;延长反应时间至20 h;连接效率接近80%25.
- Fluorobenzonitrile(4 FBN) was prepared by fluorination of 4 chlorobenzonitrile(4 CBN) with potassium fluoride using 1,3 dimethyl 2 imidazolidone (DMI) as a non polar solvent. 以4氯苯甲腈(4CBN)和无水氟化钾为原料,1,3二甲基2咪唑啉酮(DMI)为反应介质,经氟化反应合成了4氟苯甲腈(4FBN)。
- Nonpolar solvent with little dielectric constant has good effcet to the rate of the reaction,while larger polar solvent without H + also can increase the rate of the reaction. 可以知道对甲醇羰基化这一反应 ,在极性溶剂中 ,极性较大且为非质子型的溶剂能显著提高反应的速率 ;在非极性溶剂中 ,介电常数较小的溶剂能增加反应速率。
- Nonpolar solvent with little dielectric constant has good effcet to the rate of the reaction,while larger polar solvent without H+ also can increase the rate of the reaction. 可以知道对甲醇羰基化这一反应，在极性溶剂中，极性较大且为非质子型的溶剂能显著提高反应的速率；在非极性溶剂中，介电常数较小的溶剂能增加反应速率。
- In the presence of ZnCl_2 , the gels can be formed by PAATEA in many strong polar solvent, for example, methanol, propylene carbonate, water, DMSO. PAATEA is not dissolved in non-polar solvent such as DME, DOL. 这种凝胶因子在ZnCl_2 的存在下,能够在甲醇、碳酸丙烯酯、水、二甲亚砜等强极性溶剂中形成凝胶,在乙二醇二甲醚等非极性溶剂中不溶解。
- Nonpolar solvent with little dielectric constant has good effect to the rate of the reaction, while larger polar solvent without H(superscript +) also can increase the rate of the reaction. 可以知道对甲醇羰基化这一反应，在极性溶剂中，极性较大且为非质子型的溶济能显著提高反应的速率；非极性溶剂中，介电常数较小的溶剂能增加反应速率。
- The two systems of government are polar opposites. 这两种政体正好相反。
- The super-molecular structures of the solute and the solvent molecules connected by hydrogen bonding have been constructed for four kinds of polar solvents. 在四种极性溶剂中，我们构造了包括氢键作用的超分子结构。
- Introduction: the product has a very high dilatability in the polarity solvent such as water base and alcoholic group. 介绍:产品在水基,醇基等极性溶剂中具有很高的膨胀性,增稠和悬浮稳定性。
- It is believed that a small polarity of the CNF surface leads to its higher wettability in a non-polar solvent such as cyclohexane than in polar solvent such as water. 不同的表面改性手段可对CNF的表面性质进行调变以控制其在不同溶剂中的润湿行为。
- Don't mix up this pair of synonyms. 别把这两个近义词混淆了。
- The result demonstrats that isomerization occur in cis and trans of DES and its derivatives,which is effected obviously by polar solvents. 结果表明:在极性溶剂中,己烯雌酚和其衍生物存在着顺反异构转化现象,极性有机溶剂的溶剂化作用促使顺反异构体的转化。
- Samples may be dissolved or suspended in a range of polar solvents (but not acetone or methanol, since they are reaction products). 试样可以溶解或者悬浮分散在极性溶剂中(但不是丙酮或者甲醇，因为它们会发生反应)。
- He has mixed with crowd together but has not found. 他已同人群混杂在一起而找不到了。
- He finds it hard to mix at parties. 他感到很难在聚会上与人攀谈。
