athe number average molecular weight (Mn) was determined by gel permeation chromatography (GPC) using commercially available PECH and polystyrene standards as reference in THF. 数字平均分子量(Mn)在THF取决于胶凝体渗透过程色谱法(GPC)使用买得到的PECH和多苯乙烯标准作为参考。[translate]...
Test No. 118: Determination of the Number‐Average Molecular Weight and the Molecular Weight Distribution of Polymers using Gel Permeation ChromatographyPolymerMolecular weightGPCThis Test guideline describes the Gel Permeation Chromatography (GPC). This method permits to determine the molecular weight ...
To further demonstrate the value of ANN in regression, the relationship curve between the simulated tensile stress (TS) and the number-average molecular weight (Mn) is learned. An ANN with two hidden layers was constructed; each layer contains 4 neuron models with sigmoid activation functions. Fi...
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
Nature Communications volume 12, Article number: 2668 (2021) Cite this article 6186 Accesses 10 Citations 14 Altmetric Metrics details This article has been updatedAbstract Telomeres are bound by dedicated proteins, which protect them from DNA damage and regulate telomere length homeostasis. In the ...
b) then the mean molecular weight of at least one sample is determined, c) until the mean molecular weight thus determined differs from the molecular weight to be achieved by the change, the already formed polytetrahydrofuran or the tetrahydrofuran copolymers, the mono- or diesters of polytetrahy...
The molecular volume was estimated as the mean of the unit cell volumes divided by 21, the number of molecules in the phase A unit cell, with uncertainty corresponding to the standard deviation. Alternate indexing assignments were considered under the assumption that one of the measured peaks ...
Regarding Table 3, introducing 5 phr PP-MAH/PP to the blend with various ratios of PP-MAH/PP influences the weight- and number-average of diameters. As 5 phr compatibilizer with the weight ratios of PP-MAH/PP = 100/0 has been introduced to the blend, the PC diameter size is substa...
bond vibration peaks at 1625 cm−1after polymerization. The gel permeation chromatography (GPC) results (Supplementary Table1) prove that PVF has a high molecular weight (~4800 g mol−1) with wide distribution (weight-average molecular weight/number-average molecular weight,Mw/Mn = ...
$$N = \frac{m}{{Mn}}N_A$$ (8) with the mass m 25 × 10−9 [g] per spike-in, the number of cells n (3.8 × 107 for K562, 3.4 × 107 for Raji), the Avogadro constant NA 6.02214085774 × 1023 [mol−1] and molar mass (molecular weight) of the ...