Test methods for acid value and amine value of fatty quaternary ammonium chlorides 脂族季铵氯化物中酸值和胺值的测试方法
Petroleum distillates and commercial aliphatic olefins - determination of bromine number - electrometric method 石油馏出物和工业用脂族烯.溴值的测定.电位法
Surface active agents - fatty alkyl dimethyl amine oxides - determination of the amine oxide content ; german version en 1791 : 1997 表面活性剂.脂族烷基二甲胺化氧.氧化胺含量测定
Standard test method for bromine numbers of petroleum distillates and commercial aliphatic olefins by electrometric titration 电化学滴定法测量石油馏分及商用脂族烯烃的溴值标准试验方法
Fouriertransformation infro - red microspectroscopy micro - ftir technique was used to investigate the chemical compositions and structures of cutinite , vitrinite and fusinite from jurassic coals in tarim basin at different temperatures . the results show that the chemical structure of cutinite is mainly composed of long aliphatic - side chain with minor amounts of aromatic compounds . vitrinite is mostly composed of aromatic compounds , in addition to large amount of short aliphatic - side chain compounds . whereas fusinite are dominant by aromatic structure . the study indicates that cutinite is one of the best oil source - rocks , with the higher hydrocarbon - generation potential ; vitrinite is one of better gas source - rocks , and has medium hydrocarbon - generating potential ; fusinite has little hydrocarbon - generating potential . in addition , the components of aliphatic structures of cutinite , vitrinite and fusinite decrease , the aromatics are enriched and condensation of aromatic structure increases with increasing the temperature , and along with the rise of temperatures , the intensity of aliphatic structure and heteroatomic compounds decrease obviously , however the aromatic structure changes a little 应用显微红外光谱技术，对塔里木盆地侏罗纪煤中有代表性的3种组分角质体镜质体丝质体在不同热模拟温度下的结构组成变化特征进行了研究，结果表明：角质体结构组成中含有较丰富的长链脂族结构，而芳香结构和含氧官能团的含量则相对较少与此相反，丝质体结构组成中芳香烃占绝对优势，而脂族结构含量则很少镜质体结构组成介于角质体和丝质体之间，含有较多的短链脂族结构和芳香结构。
Phenyl group introducing to cholesteryl ester molecules can enhance the phase transition temperatures of the liquid crystals and their stability . an increase in the chain length for cholesteryl dicarboxylate samples reduced stability of liquid crystal phases . while coattail - like structures on the ester group of the molecules have an adverse effect to form cholesteryl liquid crystal phase 化学结构对液晶性的影响表现为：分子中引入苯环刚性结构可以提高液晶的相变温度和稳定性；脂族二羧酸胆甾醇酯中脂肪链的长度增加会降低液晶的稳定性；而末端含有燕尾结构则对液晶态的形成产生不利影响。
A super acylation catalyst , 4 - dimethylamino pyridine ( dmap ) , was prepared and used to synthesize cholesteryl ester compounds . four kinds of cholesteryl ester compounds such as cholesteryl p - alkoxyl benzoate , cholesteryl dicarboxylate , cholesteryl lumequeic ester and coattail - like cholesteryl ester were synthesized by acylation method and super acylation catalyst method . chemical structures and liquid crystal behaviors of the synthesized samples have been characterized by using element analysis , ftir , dsc and polarized microscopy with a hot stage 本文合成了高效酰化催化剂4 -二甲基氨基吡啶( 4 - dimethylaminopyridine ， dmap ) ，采用酰氯化法和高效酰化催化剂法分别合成了对烷氧基苯甲酸胆甾醇酯、对称脂族二羧酸胆甾醇酯、烯酸胆甾醇酯及燕尾型胆甾醇酯四类胆甾醇酯衍生物，并进行了化学结构和液晶性能的表征。
