It introduced the gel chromatography to determine the average molecular weight and molecular weight distribution of high polymer.
介绍了用凝胶色谱法测定高聚物的平均分子量及分子量分布。
Different grades of crystal polystyrene molding pellets range from 150,000 to 350,000 weight average molecular weight.
不同牌号的结晶聚苯乙烯模塑粒料平均分子量范围从150,000 - 350,000。
The release rate of wafer which was prepared by low average molecular weight PLGA is faster than high average molecular weight PLGA.
PLGA相对分子质量低的膜片释放速率较快，并且释放不很稳定。
The DS, intrinsic viscosity and weight-average molecular weight of the products were calculated. The products were characterized with IR and NMR spectroscopy.
测定了产物的取代度、特性黏度、 相对分子质量、 吸湿保湿性，并用IR、 NMR进行结构表征。
The number-average molecular weight and molecular weight distribution of the polymer were not sensitive to temperature.
温度升高，聚合反应的转化率增加， 但产物的数均分子量及分子量分布无明显变化；
The number-average molecular weight of the polymer decreased, the molecular weight distribution was slightly wide, but the conversion increased as the polymerization temperature increasing.
温度升高，聚合反应的转化率增加，聚合产物数均分子量降低；
The number-average molecular weight of the polymer decreased, the molecular weight distribution was slightly wide, but the conversion increased as the polymerization temperature increasing.
温度升高，聚合反应的转化率增加，聚合产物数均分子量降低；
应用推荐