酯化度

由干柚皮制得的低甲氧基果胶的酯化度为25.1%，胶凝强变为141.7°。

The degree of esterification and gel power of LM-pectin produced from dried pomelo peel were 25.1 % and 141.7 ° respectively .

红外光谱分析可知大豆油酸加到了蔗糖骨架上，平均酯化度为6.9，酸值为0.38，碘值134.2，相对密度为0.9346。

The IR spectrum indicate that the soybean oleic acid has been added onto the bone of sugar , the the degree of esterification was 6.9 , the acid value was 0.38 , the iodine value was 134.2 , and the relative density was 0.9346 .

以醇B和醇醚B对MPB进行酯化改性，酯化度为60～100%为好。

For the modification to the MPB through the alcohol B and alcohol ether B esterification , the best esterification degree was 60-100 % .

本文通过对溶解和熟成初期过程的研究，着重论述了粘胶的胶态稳定性与纤维素黄酸酯的酯化度、溶液中碱的浓度和CS2用量之间的关系。

Thereby the relationships between the colloidal stability of viscose and the ester value of cellulose sulphonate , as well as the alkalinity and the quantity of CS2 used are discussed .

研究了聚（β-氯乙基缩水甘油醚）的酯化反应动力学，并通过~1HNMR和IR光谱确立了酯化度的计算关系式。

Moreover , the kinetic of esterification of the poly (β - chloroethyl glycidyl ether ) was studied , and the calculation formula of esterification degree by 1H NMR and IR spectroscopy was established .

考察了PPVA活性分离层的酯化度、分离温度、进料浓度等因素对复合膜的分离性能的影响。

Effects of PPVA activity layer esterification degree , separation temperature and feed EtOH concentration on the PPVA / PAN composite membrane separation properties were all investigated .

制备不同酯化度果胶的新方法

New method to prepare the pectin having various degrees of methyl - esterification

不同酯化度的酯基季铵盐阳离子表面活性剂的制备及性能

Synthesis and properties of quaternary ammonium salt cationic surfactant with different esterification degree

结合酯化度，探讨了交联处理对黏胶纤维的保水率和力学性能的影响。

The water retention rate and the mechanical properties of the crosslinked viscose fibers were discussed .

研究了在催化剂存在下低酯化度果胶与甲醇进行的甲酯化反应。

The methyl - esterification reaction of low - methoxyl pectin with methylalcohol by the presence of some catalysts was observed .

本文用概率统计和动力学方法，推导了多元醇的丙烯酸酯酯化度分布函数及其计算公式。

By using probability statistics and dynamics , this paper derived the esterification degree distribution function and its calculation formula for polyol-acrylate reaction .

只要测定了反应物中羟基的反应程度，就可由该式计算出酯化度分布情况，从而为指导配方设计和反应控制提供了理论依据。

The esterification degree distribution can be calculated based on the reaction degree of the hydroxyl groups in reactants determined to provide a theoretical base for formulation design and reaction control .

论文通过冲击性能、拉伸强度、弯曲强度以及玻璃化转变温度分析，系统研究了聚醚多元醇分子量、结构和酯化度等对增韧改性的影响。

By analysis the data of impact properties , tensile strength , flexural strength and glass transition temperature , polyether polyols structure and esterification degree of phosphate ester has been systematic studied .

在最佳参数下制取的低甲氧基果胶，其主要质量指标为胶凝度（USA-SAG法）116级，酯化度36.70%，酰胺度21.05%。

Under this optimum conditions , the main quality indexes of the low-ester pectin were 116 of gel power , 36.70 % of esterification degree and 21.50 % of amide substitution degree .

活性层酯化度为3.3%及6.2%的复合膜具有良好的稳定性，能够适合于酯化反应耦合渗透汽化过程研究及应用。

Composite membranes with the esterification degree of activity layer being 3.3 % and 6.2 % had well separation properties and stability , they were suit to the studying and application of coupled membrane reactor .

通过溶解温度和凝固浴温度的调整，可以改善产品的结构形态，并用剩余酯化度的概念解释了二者之间的关系，证明了工艺参数选择的合理性。

Adjustment of the after-solution temperature and the solidification bath temperature may improve the structure and morphology of the product , which can be explained with the concept of residual ester value . This shows that the selected technological parameters are reasonable .

在适宜的反应条件下，对羟基苯甲酸壳聚糖酯酯化度可达130%、得率80%以上。

Under optimum reaction conditions , esterification degree of para-hydroxybenzoate chitosan ester was 130 % , and yield reached 80 % .