The result shows the viscosity-average molecular weight of poly(L-lactic acid) attains to 232,000 synthesized by optimizing the reactive conditions.
结果表明：通过优化反应条件，使得在苯溶剂中合成出的聚L-乳酸的粘均分子量可达到232，000。
Use viscometry to determine viscosity-average molecular weight of oxidated polyethylene wax and introduce the measurement, process and effect factors in detail.
用粘度法测定氧化聚乙烯蜡的粘均分子量。对测定方法、步骤及影响因素做了详细介绍。
This paper studies the average molecular weight of branched chain of poly ( acrylic acid) by viscosity method. The structure of graft copolymer is also measured by IR method.
利用粘度法测定聚丙烯酸支链的平均分子量，红外光谱法分析接枝共聚物的结构。
The effects of ionic liquids on viscosity, hydrocarbon composition and average molecular weight of heavy oils are investigated.
研究了离子液体对稠油黏度、组成和平均分子量的影响。
The polymer with a viscosity average molecular weight beyond 200 000 was fairly reproducible by optimizing the polymerization conditions.
优化聚合条件可以获得粘均分子量大于200 000的聚丙交酯材料，聚合结果具有良好的重复性。
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 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。
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