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- The synthesis of nonionic hemicelluloses,cationic hemicelluloses and anionic hemicelluloses is described in detail. 详细介绍了非离子半纤维素、阳离子半纤维素、阴离子半纤维素的合成方法。
- A kind of cationic hemicelluloses was synthesized by means of quaternization,using sugarcane bagasse hemicelluloses as the raw material,reacting with cationic reagent in alkaline condition. 以从蔗渣中提取的半纤维素为原料,在碱性条件下与阳离子试剂发生季铵化反应,制备出一系列阳离子半纤维素。
- cationic hemicelluloses 阳离子半纤维素
- Some of the cationic proteins are bactericidal. 一些阳离子蛋白质是能杀菌的。
- The sodium is removed with cation exchange resin. 钠用阳离子交换树脂来分离。
- The cation penetrates the spore. 这种阳离子能透入孢子。
- Cation, but he seems to be much of a scholar. 据说他未受过高等教育,但他看上去很有学者的风度。
- The sodium is removed with cation exchange resin . 钠用阳离子交换树脂来分离。
- The cation penetrates the spore . 这种阳离子能透入孢子。
- This material includes cellulose, hemicelluloses, pectin, and lignin. 它包括纤维素、半纤维素、果胶和木质素。
- In some seeds (e.g. the endosperm of dates) hemicelluloses are a food reserve. 在一些种子中(如海枣的胚乳),半纤维素还是一种食物储备。
- Abstract: Cationic and amphoteric flocculants have many advantages. 阳离子型高分子絮凝剂及两性高分子絮凝剂具有许多优点
- The cationic starch size is found to be of antistatic property. 研究得出阳离子淀粉浆料自身具有抗静电性能。
- But it was difficulted to decolorize the basic dye cationic yellow. 结果表明,最易脱色的为分散、直接和酸性染料,最难脱色的为碱性染料阳离子黄;
- Hydrochloric Acid, Cationic Surfactant, Perfume, Oxalic Acid, Dye. 产品成份:盐酸、阳离子表面活性剂、草酸、香精、颜料。
- These polyelectrolytes can be anionic, cationic or nonionic. 聚合电解质有阳离子型、阴离子型或非离子型。
- Vinyl ethers can cure by both cationic and free radical mechanisms. 乙烯醚可以都阳离子和游离基反应固化。
- Cationic detergents largely are based on tetraalkylammonium salts. 阳离子表面活性剂主要是烷基胺盐。
- The number of cationic bromine and chlorine compounds is restricted. 溴、氯阳离子化合物的数量受局限。
- Neutralize the harmful cation, reduces the radiation electric wave. 中和有害正离子,降低辐射电波。