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- Keywords aqueous polyurethane;hydrogen bond;particle structure;carboxyl group amount;heat analysis; 水性聚氨酯;氢键结构;粒子结构;羧基含量;热分析;
- carboxyl group amount 羧基含量
- The pH is equal to the of the carboxyl group. 等于羧基pKa的pH
- The introduction of a carboxyl group into a compound or molecule. 羧化把一个羧基引入一个化合物或一个分子
- It wasconcluded that the problem of carboxyl end group amount increase caused by the increase of loads will besolved through advancing the the loads in PET production process. 结论：可以通过工艺过程的负荷前移的方法，解决提高负荷而带来的端羧基含量升高问题。
- The modification of HBP with about proper amount 70% of epoxy resin based the mole of the carboxyl group, showed obviously the improved photo reactivies and mechanical properties. 环氧树脂用量为HBP羧基物质量的70%25左右时，改性的超支化聚酯的光固化活性有明显提高，力学性能得到明显改进。
- Containing two carboxyl groups per molecule. 二羧基的每个分子中含有两个羧基的
- The results indicate that carboxyl group is strongly interacted with MMT. 试验结果表明,羧酸基团与MMT有很强的相互作用。
- Another end for the hydroxyl and the carboxyl group, has the water affinity. 另一端为羟基和羧基，具有亲水性。
- Each fatty acid consists of a hydrocarbon chain with a carboxyl group at one end. 每个脂肪酸由一端带有一个羧基的碳酸链组成。
- Removal of a carboxyl group from a chemical compound,usually with hydrogen replacing it. 脱羧作用从一化合物中脱去羧基，通常是用氢来替换。
- Removal of a carboxyl group from a chemical compound, usually with hydrogen replacing it. 脱羧作用从一化合物中脱去羧基，通常是用氢来替换
- The fact that IR vibrating peaks of the carboxyl group have made a wide and split peak is explained in this paper. 解释了该类配合物的羧基红外振动峰是一宽峰且有劈裂的特点。
- In the meanwhile, the various. morphology of the latex and the migration of the carboxyl group are also discussed. 这一反应还伴随着羧基的迁移以及乳胶粒膨润、溶胀和压缩的形态变化过程。
- By direct cyanidation, the reaction of p-toluic acid with urea would convert the carboxyl group to cyano group to give p - tolunitrile. 本文报道了对甲苯甲酸与尿素反应,进行直接氰化将羧基转变成氰基生成对甲苯甲腈的情况,改进了对甲苯甲酸直接氰化的工艺条件。
- The pendant carboxyl groups add more crosslinking sites and polar than Nitrile. 在丁腈橡胶的基础上，羧基增加架桥端并赋予更高的极性。
- Amino acids are called "amino acids" because they contain an amino group (NH2) and a carboxyl group (COOH) that is acidic. 氨基酸之所以叫“氨基酸”，是因为每个氨基酸分子包含一个氨基(NH2)和一个羧基(COOH)。
- This paper reports an improved headspace gas chromatographic method for determination of carboxyl group content in wood fibers. 报道了一种应用顶空气相色谱测定纸浆纤维羧基含量的方法。
- ACF, oxidized by concentrated nitric acid and hydrogen peroxide, was analyzed by Boehm titration, FT-IR and TG The results of Boehm titration showed the acidic group amount of oxidized ACF increased obviously. 经浓硝酸和浓过氧化氢氧化ACF制得的氧化改性ACF,通过Boehm滴定分析表明氧化改性ACF表面酸性基团明显增加,也得到了FT-IR和TG的验证。
- Any of various natural or synthetic compounds containing two or more amino acids linked by the carboxyl group of one amino acid and the amino group of another. 肽，一种自然或人工的合成物，包括二个或二个以上氨基酸，通过一个氨基酸的酸基和另一个的羧基结合而成。
