技術詳情
首頁 > 技術鏈結 > 非對稱流場場流分離量測技術非對稱流場場流分離技術 (AF4) 利用交叉流場與樣品擴散行為，在無填充材的薄層通道中分離不同尺寸的高分子與奈米粒子。結合多角度光散射 (MALS)、折射率 (RI) 及紫外光 (UV) 偵測器，可分析分子量分布、迴轉半徑及聚集狀態，協助材料研發與批次品質比較。
Asymmetrical flow field-flow fractionation (AF4) separates polymers and nanoparticles according to their diffusion behavior under cross-flow in an unpacked thin channel. Coupled with multi-angle light scattering (MALS), refractive index (RI), and ultraviolet (UV) detectors, the system characterizes molar mass distributions, radii of gyration, and aggregation to support material development and batch quality comparison.
- Brand / Model: POSTNOVA / AF2000
- Detection: 21-angle MALS, RI, and UV detectors
- Particle size measurement range: 10 nm–1 μm
- Molar mass measurement range: 10³–10¹² Da
AF4–UV–MALS–RI 系統
- 奈米粒子粒徑分析：迴轉半徑 (Rg) 及其分布
Nanoparticle size analysis: Radius of gyration (Rg) and its distribution - 分子量分析：Mn、Mw、Mz、分散度 (Mw/Mn)
Molecular weight analysis: Mn, Mw, Mz, and dispersity (Mw/Mn) - 構形與聚集態分析：迴轉半徑與分子量對應關係
Conformation and aggregation analysis: Scaling of Rg vs. Mw
AF4 fractogram and cumulative Rg distribution
