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- Keywords Poly DL Lactide Ring opening Polymerization Average Molar Mass; 聚DL丙交酯;开环聚合;平均摩尔质量;
- Z+1 average molar mass Z＋1均分子量
- The mass loss were similar to those in vitro, and molecular weight changes were the same to those in vitro,but the number average molecular weight did not fit the Pitt?s model. PDLLA膜体内降解重量保持率类似体外，虽然体内的数均分子量不符合Pitt动力学模型，但两条件下分子量变化一致。
- To determine the number average molecular mass of chitosan-oligosaccharide by u-sing the acetylacetone s method based on the color-producing reaction with amino terminal . 采用乙酰丙酮与氨基端反应的生色原理,将乙酰丙酮法应用于甲壳胺寡糖数均分子量的测定。
- It was concluded that the parameters of dilatational viscoelasticity changed with the increase of molar mass of fractions or dilatational frequency. 结果表明，伊朗重质减渣馏分的扩张粘弹性参数随馏分的增重以及扩张频率增大而递变。
- The molar mass (MM) of polymer HPAM suitable for use in polymer flood in middlle-low permeability reservoirs of Daqing is studied. 对可用于大庆油田中低渗油藏聚合物驱的聚合物HPAM的适宜分子量进行了研究。
- A hindered polyetherketone endcapped with p (t butyl)phenol was synthesized. 1H NMR technique was used to seek for the number average molecular weight of this new polymer. 以对叔丁基苯酚为封端剂，合成带烷端基的多苯基取代联苯型聚醚酮，测定其1H－NMR谱，根据链中芳环质子共振峰与链端基质子峰积分强度比求解分子量。
- A device for determining molar mass with freezing point depression was improved,which consists of the Dewar bottle,sample container,Beckmann thermometer,and motor stirrer. 介绍一个改进的凝固点下降法测定摩尔质量实验装置,它由保温瓶、凝固点杯、贝克曼温度计、电动搅拌器等几部分构成。
- The weight average of relative molecular weight of hydroxypropyl sulfated oligo-konjac glucomannan is l595D, the number average of relative molecular weight is 1572D, and PDI (MW/MN) is 1.01 by GPC. 凝胶色谱测定重均相对分子质量1595D，数均相对分子质量1572D，分子量分布PDI(MW/MN)为1.;01，表明样品是单分散性分子量分布。
- With zinc D, L-lactate as catalyst, which is safe to body, PDTC with Mw as 700000g/mol was prepared when the reaction mixture was irradiated for 75min under 180W microwave power. This method was proved to be ideal for preparing PDTC with high molar mass. 作者使用对人体安全可靠的D，L-乳酸锌为催化剂，进行DTC的微波开环聚合，在180W的微波功率下辐照75min，得到了重均分子量为700000g/mol的PDTC，这一方法是合成高分子量PDTC的理想方法。
- Polystyrene polymethacrylate diblock copolymers with well defined structures asw- ell as controlled and narrow molar mass distribution were obtained from the lower mass polystyrene macroinitiator. 聚苯乙烯 -聚甲基丙烯酸酯嵌段共聚物的分子量可控 ,分子量分布较窄 ,单体转化率较高。
- number average degree of polymerization 数平均聚合度
- Dave's Molar Mass and Percent by Mass Calculator 分子量及元素百分比计算器
- The mensuration of molar mass of organic acid 有机酸摩尔质量的测定
- Instantaneous number average degree of polymerization 瞬时数均聚合度
- Keywords Vapor pressure osmometry;Number average molecular weight; 气相渗透法;数均分子量;
- He thumbed through the directory to look for her number. 他翻阅电话号码簿找寻她的号码。
- Let me note down your address and telephone number. 让我记下你的地址和电话号码。
- The number averaged molecular weights of the obtained polymers increased linearly with monomer conversion, and molecular weight distributions were unimodal throughout the reaction. 所得聚合物的数均分子量随单体转化率的增加而线性增长，而且分子量呈单峰分布。
- He picked a winning number on the first draw. 他第一次便抽到一个中奖号码。
