The weight average molecular weight (Mw), number average molecular weight (Mn), and molecular weight distribution (Mw/Mn) of the polymers.YuQiang, WangFei, WangXiaoQin, DengJing, ShengShuYan, ChenJing, Su
GPC是可以测Mw Mn，我是想问如果文献中提到median molecular weight 是某个数值，比方说60Kd，测试方法...
Molecular weight distribution (Mw! Mn) of the non- volatile oligomers were measured by GPC (Toyo Soda HLC-802 UR). The data were calibrated by the standard, polystyrene. Hydrogenation of the Nonvolatile Oligomers The procedure for hydrogenation is described in a preceding paper. 2 In the case...
A polyester resin has a molecular weight distribution (MWD) of approximately from 1.0 to 2.2, wherein molecular weight distribution (MWD) is a weight-averaged molecular weight (Mw)/a number-averaged molecular weight (Mn); and a luminosity (L*) of from ap
The molecular weight distribution obtained was compared with that built up from the molecular weight distributions of the components. In Figure 1-A, comparison is made for sample No. 9 in which the molec- ular weights of both components are sufficient- ly far apart (Mw/Mn= 1.27). The ...
网络数均分子量;数量平均分子量 网络释义
Moreover, the exact molecular weight (Mw) of each synthetic batch is hard to reproduce, as every new batch may result in different degree of polymerization (DP) [20,21]. When considering therapeutic applications, these characteristics may have fundamental consequences, as not all molecules in a...
High molecular weight (MW) polymers could pose the risk of accumulating in tissue, and the molecular weight of a polymer has a significant impact on its drug release mechanisms. Studies of drug-polymer and polymer-membrane interactions are vital for modification or development of delivery vehicles,...
Microporous membranes and methods for producing such membranes from ultrahigh molecular weight polyethylene are described. The method employs extrusion of a solution of UHMW-PE and porogen through a forming die followed by thermal phase separation of polymer and porogen. Microporous structures are created...
Since the peaks in the schlieren patterns are broadened as a result of various effects such as diffusion, the molecular weight distribution of each sample could not be calculated from a single schlieren pattern. However the value of Mw/Mn was calculated from the weight ratio of two components,...