[Study on quantitative analysis of cross linked copolymer by IR]

Area of Science:

• Polymer Chemistry
• Materials Science
• Analytical Chemistry

Context:

• Cross-linked copolymers, such as silicon oil-co-lactide (Si-co-LA), present analytical challenges due to their insolubility and non-melting properties.
• Quantitative analysis is crucial for understanding and controlling the properties of these advanced materials.

Purpose:

• To develop a convenient and accurate quantitative method for analyzing the component proportions in cross-linked Si-co-LA copolymers.
• To establish a reliable infrared (IR) spectroscopy-based technique for copolymer characterization.

Summary:

• A quantitative analysis method using IR spectroscopy was developed for cross-linked Si-co-LA copolymers.
• Potassium sulfocyanate (KSCN) was used as an internal standard, with characteristic absorption peaks at 2100 cm⁻¹ for KSCN and 1750 cm⁻¹ for lactide (LA).
• The method established a linear quantitative work curve within a specific mass ratio range, enabling the calculation of component proportions using derived formulas.

Impact:

• Provides a novel, convenient, and accurate method for the quantitative analysis of otherwise difficult-to-analyze cross-linked copolymers.
• Facilitates precise material characterization, potentially leading to improved material design and applications in various fields.
• Advances analytical techniques in polymer science and materials characterization.