摩尔质量

一种新型复合成核剂对PET结晶性能和摩尔质量的影响

Study on the Effect of Hybrid Nucleating Agents to the Crystallization and Molar Mass of PET

DLLA在真空封管下聚合，重均摩尔质量（Mw）大于10.0×104g/mol。

DL LA polymerized in sealed ampoules , weight average molar mass was above 10 × 10 4 .

基于VB测定物质摩尔质量的化学虚拟仪器

The Chemical Virtual Instrument of Measuring Material Molecular Quantity Based on VB

千克级窄摩尔质量分布PS的合成及其表征

Synthesis and Characterization of Narrow Molecular Weight Distribution Polystyrene on Kilogram Scale

PP可以作为PC的增韧剂使用，并且可在不降低其流动性的前提下较大幅度地提高低摩尔质量PC的韧性。

PP could be used as toughening agent for PC , which could greatly increase the toughness of low molecular weight PC , without the decrease of the flowability of PC.

由实验数据计算所得Flory-Huggins相互作用参数X显著依赖于溶液浓度，聚合物摩尔质量也有轻微影响。

The calculated Flory - Huggins interaction parameters X exhibit a strong concentration dependence . The molar mass of the polymer also exerted a definite influence .

采用XRF法测定钐铕钆富集物的平均摩尔质量，用EDTA滴定法测定钐铕钆富集物的稀土总量。

The mean molar mass in Sm-Eu-Gd concentrate was determined by XRF . Total rare earth contents in Sm-Eu-Gd concentrate was determined by EDTA volumetric method .

以熔融共混法制备了低摩尔质量PC/PP合金材料，借助于力学性能测试、SEM观察等手段对这一共混体系的增韧机理进行了研究。

Low molecular weight PC / PP blend was prepared by means of melt blending , and the toughening mechanism of the blend system was studied by means of mechanical test , IR and SEM , so on .

结果表明：聚酰胺酸的适宜反应时间为6h，此时其重均摩尔质量趋于稳定。

The results showed that the feasible reaction time for polyamide acid was 6 h , at this time the weight average molar mass went to stable .

通过高温凝胶渗透色谱（GPC），采用普适校准法对线性聚苯硫醚树脂（PPS）的摩尔质量、多分散系数以及摩尔质量分布进行测定。

The molecular weight , molecular weight polydispersity and molecular weight distribution of poly ( p-phenylene sulfide )( PPS ) were characterized by high temperature gel permeation chromatography ( GPC ) using universal calibration .

比较了AlCl3和AlCl3／SbCl3复合体系的α－蒎烯／苯乙烯阳离子共聚反应及产物的摩尔质量分布。

The cationic copolymerization of α - pinene and styrene initiated by AlCl_3 alone and AlCl_3 / SbCl_3 compound catalyst respectively was investigated .

重均摩尔质量为4000g／mol的油酸聚乙二醇酯最佳添加量是0.2份，共混物的表面电阻为1.91×10~6Ω。

The lowest surface resistance of PP was 1.91 × 10 ~ 6 Ω with about 0.2 % phr of polyethylene glycol oleate ( the weighted average molar weight of polyethylene glycol was about 4000 g / mol ) .

向塑料光纤纤芯材料纯PMMA中引入链转移剂正丁硫醇（nBM）以控制摩尔质量。

Chain transfer agents ( n-BM ) was applied to pure PMMA , which was used as the core materials in polymer optical fiber ( POF ), to control the molecular weight of PMMA .

在核单体三羟甲基丙烷（TMP）与MB摩尔比为1¨9和1¨21的条件下，采用准一步法合成了两种不同摩尔质量的端羟基超支化聚合物。

Molar ratios between the core monomer trimethylolpropane ( defined as TMP ) and the MB monomer of 1 ∶ 9 and 1 ∶ 21 gave two hydroxylic hyperbranched polyesters with different molar mass prepared using a pseudo one step procedure .

以均苯四甲酸二酐、4,4′二胺基二苯醚为原料，通过缩聚反应制备了聚酰胺酸，采用凝胶渗透色谱（GPC）考察了反应时间对产物重均摩尔质量的影响；

Polyamide acid was prepared by means of polycondensation , taking PMDA and ODA as raw materials , and the effect of reaction time on the change of the weight-average molar mass of polyamide acid was measured by gel permeation chromatography ( GPC ) .

同时采用GPC、FTIR和DSC对级分的摩尔质量、支化度和结晶性能进行了测定和分析，结果表明溶液分级能够将HDPE分成窄摩尔质量分布且具有特定结晶度的级分。

The molecular weight , the content of short chain branching and crystallinity for each fraction were characterized by GPC , FTIR and DSC , respectively . The results confirmed that HDPE could be effectively fractionated into three different fractions with relatively narrow molecular weight distribution and defined crystallinity .

凝固点降低法测摩尔质量实验研究

Research on the Determination of Molar Mass by Freezing Point Depression

通过这个软件，你也可以计算物质的摩尔质量。

You can also calculate the molecular mass of molecules .

基于虚拟仪器的测定物质摩尔质量实验的改进

Improvement of Experimental Determining Molar Mass Based on Virtual Instrument

环氧基封端聚二甲基硅氧烷的特性粘数与摩尔质量的关系

The Intrinsic Viscosity-Molecular Weight Relationship of Epoxy-terminated Polydimethylsiloxane

不同摩尔质量聚碳酸酯的增韧改性摩尔比不同，产物的端基也不同。

Different mole ratio of the reactants brings different end groups of the product .

首先，我们先计算，固体的摩尔质量。

So first , let 's just calculate the molecular weight of the solid .

凝固点降低法测定摩尔质量实验装置的改进

Improvement of the Experiment Device of Measuring Molar Mass by Freezing Point Depression Method

摩尔质量计算机测试系统

QUALITY Computer Measuring System for Molecular Weight

污水中聚丙烯酰胺的水解度、摩尔质量及含量的测定

Determination of Hydrolytic Degree , Mole Mass and Concentration of Hydrolyzed Polyacrylamide in Oily Wastewater

本文提出以相对挥发度、相对分子摩尔质量、熔点、沸点、共沸和稳定判断等为筛选指标进行分子设计；

The screening indexes of extractant include relative volatility , molecular weight , freezing point , boiling point , azeotrope judgement and molecule stability .

对汽油蒸气的一些关键物性参数，如油气摩尔质量、压缩因子、蒸气压及油气&空气扩散系数等给出了推荐值或计算式。

Some key parameters such as gasoline vapor mole quality and compression factor , vapor pressure , and vapor-air diffusion coefficient were decided and recommended .

以环己烷作溶剂、萘为溶质测得萘摩尔质量的相对误差均在1%以内。

With the hexamethylene as solvent and naphthalene as solute , the relative error of molar mass of naphthalene measured is not much as1 % .

然后以辛酸亚锡为催化剂，以开环聚合的方法合成了聚L-乳酸，研究了催化剂的用量、聚合时间、聚合温度对聚L-乳酸摩尔质量的影响。

Influence factors such as the quantity of catalyst , the polymerization temperature , the polymerization time on the molecular weight of PLLA were also discussed .

模拟计算结果表明，6级循环管式反应器串联，在优化的条件下，O，O-二甲基硫代磷酰氯的收率为93.86%，产品摩尔质量达到94.35%。

The quality can reach 94.35 % and the yield can reach above 93.86 % in optimal conditions when six stages recycle tubular reactors in series .