Apparatus and Equipment

The Benchtop FiberSpin NMR comprises several key components including a 0.5 Tesla permanent magnet which generates a magnetic field that aligns the sample nuclei. The sample is contained within a specialized probe that is 45mm in diameter and 78mm in length. A sample holder is used to keep the sample in place within the NMR probe, with a minimum sample size of 1g. A computer is utilized to control the NMR spectrometer, collect and analyze data, and display results, with software providing a user-friendly interface for data acquisition, processing, and interpretation. The instrument also features a temperature control system that maintains a stable temperature range of 0-45°C, while an AC power supply of 100-240V, 50/60Hz is required to operate the instrument. Additionally, a detailed user manual is provided to guide the user through the instrument’s setup, calibration, and operation. With its compact and portable design, powerful permanent magnet, specialized NMR probe, and intuitive software, the FiberSpin NMR is an ideal solution for measuring spin-finish on synthetic fibers in a range of laboratory settings.

Application

The Benchtop FiberSpin NMR is an instrument designed to measure the spin-finish of synthetic fibers. Its compact and portable design makes it ideal for laboratory settings where space is at a premium. The instrument features a 0.5 Tesla permanent magnet, a specialized NMR probe, and user-friendly software to acquire, process, and interpret data. The temperature control system and the ability to work with small sample sizes make it an effective tool for analyzing a variety of fibers.

Protocol

1. Ensure that the instrument is properly calibrated according to the manufacturer’s instructions.

2. Prepare the sample according to the instructions provided in the manual.

3. Open the device software on your computer and turn on the instrument and allow it to warm up for a few minutes.

4. Click on the “Connect” button in the software to establish a connection between the instrument and your computer.

5. Load the sample into the instrument according to the instructions provided in the manual.

6. Select the appropriate experiment parameters in the software, such as pulse sequence, number of scans, relaxation delay, etc.

7. Start the experiment by clicking on the “Run” button in the software.

8. Wait for the experiment to finish and the results to be displayed in the software.

9. Analyze the results according to the instructions provided in the manual and record the necessary data.

10. Disconnect the instrument from your computer and turn it off.

11. Clean the instrument and store it according to the instructions provided in the manual.

12. Analyze the data obtained from the experiment using appropriate software tools or by consulting a specialist in the field.

Strengths and Limitations

The Benchtop FiberSpin NMR offers several key strengths, including its compact design, powerful permanent magnet, and user-friendly software. It also has a temperature control system and can work with small sample sizes. However, limitations include the instrument’s sensitivity to magnetic fields and the need for expertise to interpret the data.

Summary

The Benchtop FiberSpin NMR is a powerful tool for analyzing the spin-finish on synthetic fibers. Its compact and portable design, along with its powerful permanent magnet and user-friendly software, make it an ideal solution for laboratory settings. While there are limitations to the technique, NMR spectroscopy has been shown to provide accurate and precise measurements of spin-finish.

References

1. Yu J, Jin X, Wang L. Characterization of spin-finish on nylon fibers by NMR spectroscopy. Fibers and Polymers. 2010;11(4):617-622.
2. Liu L, Guo Y, Zhang L, et al. Quantitative analysis of spin-finish on polyester fibers by NMR spectroscopy. Polymer Testing. 2017;62:312-318.
3. Luo J, Li Y, Li Q. Determination of spin-finish on polypropylene fibers by 1H NMR spectroscopy. Fibers and Polymers. 2017;18(9):1746-1752.