Wyatt 推出的MALS/GPC分子量凝胶色谱系统系统,可选择多角度激光光散射检测器、紫外/示差检测器、 粘度检测器等多种凝胶色谱检测器。其主要应用领域: 1. 合成高聚物:PS、PP、PE、SBS、PAM ……; 2. 天然高分子:多糖(羟乙基淀粉、透明质酸、魔芋多糖、壳聚糖、芦荟多糖、木质素等)……; 3. 生物大分子:蛋白质...
Other detectors that can be coupled to the GPC-IR® system are Polymer Char’s four-capillary bridge viscometer and a Multi-Angle Light Scattering (MALS) detector for the determination of absolute molar mass and the study of Long-Chain Branching (LCB). ...
流速:1.0 mL/min 检测:RI (EcoSEC GPC System) 温度:35 ℃ 进样量:100 μL 样品:polyimides 分析结果 图2是用HLC-8420GPC系统来区分不同合成路线得到的,化学组成相同而最终使用性能不同的聚酰亚胺。 图2 化学组成相同而最终使用性能不同的聚酰亚胺的GPC谱图 表1 化学组成相同而最终使用性能不同的聚酰亚胺 的...
沃方案 | 使用凝胶渗透色谱(GPC)测定药用辅料分子量 药用辅料是指生产药品和调配处方时使用的赋形剂和附加剂,是药物制剂的基础材料和重要组成部分。 曾出过问题的药品事件多数与药用辅料有关系,比如齐二药事件、铬超标胶囊事件等,看起来是药品的问题,追根溯源是辅料的问题。药用辅料不仅赋予药物一定剂型,而且与提高药物...
7. Go to Results. System should calculate for your sample dn/dc 8. You should check dn/dc value using “Refractive Increment Data Book” (on the desktop) or search available literature data if possible. Value of the dn/dc is very important for the molecular weight determination. You can ...
When the focus of your investigation is not limited to molecular weights but needs to delve deeper into understanding the physical structure of a compound then the powerful combination of Differential Refractive Index (DRI), Multi-Angle Light Scattering (MALS) and Viscometer provided by Trinity is ...
Viscotek RImax is a complete, conventional, calibration GPC/SEC system with an integrated autosampler and RI detector.
Tips & Tricks GPC/SEC: System Peaks or Ghost Peaks in GPC/SEC Innovations in Ion-Exchange Chromatography for mAb Variant Analysis Characterizing Polydisperse Cellulose Nanocrystals Using AF4-MALS Elevated Uranium Concentrations Found in Groundwater of Rio de Janeiro Region Chiral Announces Arbor Acquisit...
•SEC技术与SEC-MALS技术•仪器参数确定•小结 ©WyattTechnologyCorporation–AllRightsReserved 2 多角度光散射法：两种测定模式 I scattered Mc dndc 2 •单机模式(Batchmode)–Mw(weight-averagedmolarmass)，Rz(z-averagedRMSradius)，A2 –无法测定：样品多分散性...
MALS detectors add valuable information to SEC analyses but, when deciding whether to invest in one, it is also worth considering their potential drawbacks: MALS detectors are usually expensive. They add complexity to the SEC system and demand a high level of expertise. ...