德国原装进口 FESTO SLT-20-50-P-A停产被替代为DGST-20-50-PA 德国原装进口 JUMO L型铂热电阻 XH-PT1-222110150 50 260 C 2XPT100 4W 德国原装进口 KELLER 压力传感器 PAA-33XEI/81871.15 0-0.1BAR 4-20MA;Order No.:55010061报PAA-33XEi / 0,1bar / 81871.15 233310.0036 德国原装进口 GEMU 执行...
◆聚合物及其稳定同位素标记物(包括GPC分子量标品,PEG衍生物等) ◆环境检测标物及其稳定同位素标记物 ◆工业检测标物及其稳定同位素标记物 ◆农残兽残检测标物及其稳定同位素标记物 ◆标准溶液及其稳定同位素标记物(色度标液, AAS, ICP, ICP-MS, IC等标液) ...
The GPC (gel permeation chromatography) curve of the polyethylene sample obtained with 2/TIBA catalyst (50°C, 5 atm, toluene–chlorobenzene) is bimodal indicating that at least two species are active in this system and one is more active than the other. The 2/MAO system (50°C, 5 atm,...
According to GPC analysis using calibration carried out from polyethylene glycol (PEG) standards of masses 194 to 22000, the sample is a mixture of polymers of very similar masses (Mw/Mn=1.17) and Mw=1446 daltons. EXAMPLE 10: Polymerization of D,L-lactide 0.05 g (0.17 mmol) of [(Me3...
alpha-GPC Wuhu Foman Biopharma Co, Ltd. 供應商 - 相同的CAS號碼 Ethylene glycol monoacrylate 下列產品的供應商列舉如下: 2-HEA 2-Hydroxyethyl acrylate Acrylic acid 2-hydroxyethyl ester Ethylene glycol acrylate HEA Hydroxyethyl acrylate 以下公司不 Ethylene glycol monoacrylate 供應商。本公司是同等產品的...
MW和MW与同位素有关，avg是元素同位素平均值计算出的分子量，mono是某一种元素同位素计算得到的蛋白分子...
以紧密啮合双螺杆挤出机为反应器,二乙二醇二甲醚(2G)为极性添加剂,有机锂为引发剂,采用混合单体一次加料的反应挤出技术本体法合成了苯乙烯/异戊二烯共聚物,1H-NMR、多检测GPC和DMA的分析结果表明,随着2G的加入及其用量的增加,该共聚物中的3,4-IP和无规苯乙烯单元的含量逐渐增加;PS嵌段平均长度逐渐变短,分子链末端...
Mn or Mw (LS) determined from GPC-LALLS for polydendrons. becomes more remarkable with increase of the gener- ation, which indicates that the dendritic structure re- 882 tained a very compact molecular size in the solution, as was observed in the case of other dendrimers.1 Other types of...
The structure of the polymer was investigated with FTIR, DSC, GPC, and 13 C-NMR techniques. The polymerization product was composed of polyethylene and syndiotactic polystyrene. No ethylene-styrene copolymer was detected. The composition of the product was dependent on the polymerization conditions. ...
The chemical structure of the diblock copolymer was verified by means of Fourier transform infrared spectroscopy (FT-IR) and 1H-NMR, and the weight average molecular weight (Mw) and polydispersity index (PDI) were measured by gel permeation chromatography (GPC). An mPEG/PLA (20/80) copolymer ...