POSTNOVA TF2000熱場場流儀
熱場場流分離儀，是一種非常先進的分離分析儀器，具有強大的分離功能：不僅能按照樣品的尺寸/體積來，而且還可以按照樣品的化學性質進行分離！這是因為熱場採用了熱擴散分離原理，因此特別適合共混物的分析。熱場場流儀在橡膠領域的應用是非常典型的應用：不僅可以分析橡膠中聚合物的分子量/分子量分佈，而且還可以將凝膠物質分離出來並測試其含量。與傳統的秤重法相比，熱場TF3大大節省了時間、顯著提高了測試精度、重複性和重現性。
目前已為大多數世界知名橡膠製品、輪胎企業和研發單位所採用，將來必將成為橡膠分析的標準方法。
像其它場流儀器一樣，熱場也具有分離過程可以調節的能力。這個能力，在共混物分離中尤其有用。
在聚合物的分析中，離心場尤其適合分離與分析有機相和水相的聚合物溶液中的直鏈與支化的樣品！
Applications, Application Notes and Publications
Applications
- Latex Coatings
- Nanoparticles
- High-Tech Materials
- Technical/ Industrial Polymers
- Starches
- Paints
- Polymers and Particles from approx. 10 kDa up to 100 MDa and more in organic/ aqueous solvents
Publications
- Characterization of Complex Polymer Self-Assemblies and Large Aggregates by Multidetector Thermal Field-Flow Fractionation
- Composition and molecular weight analysis of styrene-acrylic copolymers using thermal field-flow fractionation
- Multidetector Thermal Field-Flow Fractionation: A Unique Tool for Monitoring the Structure and Dynamics of Block Copolymer Micelles
Specification
General Sample Size and Molar Mass Range:
Polymers: 10 kDa-100 MDa
Particles: 10 nm-1000 nm
Analysis Time:
Typical 10-120 min, no software limitation
Channel Dimensions:
Volume: 1.14 mL
Length: 456 mm
Breadth: 20 mm
Thickness: 130 µm
Channel Flow Rates:
Typically 0.01-2.0 mL/min
(For different flow rates ask Postnova)
Carrier Liquids:
Compatible with most organic solvent systems
(For aqueous solvents ask Postnova)
Detectors:
UV, RI, laser light scattering, fluorescence detection and more; multiple detectors in-line possible
(For details ask Postnova)
Thermal-Field Strength:
Maximum ΔT up to 120°C
Hot wall maximum: 180°C
Cold wall maximum: 60°C
(THF, 220 V, coolant water at 20°C, 12 L/min)
Temperature Control:
PC controlled for accurate, constant and programmed field options
Channel Pressure:
Up to 250 psi (approx. 14 bar) to pressurize the channel for any analysis at higher temperatures
System Requirements:
220-230 V, 50/60 Hz; 12 A for basic set-up
max. power consumption 3.5 kW
Coolant water at 20°C, 12 L/min, max. 2 bar
PC will be supplied by Postnova, Windows English
(For details ask Postnova)
System Software:
NovaFFF TF2000
Maintenance:
Rugged reuseable channel with no special maintenance required
Injection Volume:
1-1000 µL
Standard 20 µL
optional > 1000 µL
Injected Sample Mass:
Up to 500 µg and more; depending on sample characteristics; Typical injection mass 20-100 µg
Injection Method:
Via Rheodyne© manual injection valve or autosampler with different options