Plastic raw material analysis includes a series of tests and procedures to determine the composition, physical and chemical properties of plastics. These analyzes are used in the manufacturing process, quality control, or research and development. Below are some methods that are frequently used in plastic raw material analysis:

1. *Differential Scanning Calorimetry (DSC):* It is used to analyze the thermal properties (melting temperature, crystallinity rate, etc.) of the plastic material.

2. *Thermogravimetric Analysis (TGA):* It measures how the material loses weight with temperature. This is used to determine thermal stability and the amount of fillers it contains.

3. *Fourier Transform Infrared Spectroscopy (FTIR):* Used to determine the chemical composition of the material. FTIR can identify functional groups and structures in plastics.

4. *X-Ray Diffraction (XRD):* Used to determine crystal structures and crystallinity ratio.

5. *Gas Chromatography (GC):* Used to analyze volatile compounds and monomer residues.

6. *Rheometry:* It is used to measure the flow properties, viscosity and elastic behavior of plastic.

7. *Mechanical Tests:* Performed to determine mechanical properties such as tensile strength, impact strength, bending strength.

8. *Microscopy:* Optical microscope or scanning electron microscope (SEM) is used to observe the microstructure of the material.

9. *Migration Tests:* Especially for plastics used in food packaging, it is done to check whether the contents pass into the food.

Plastic raw material analysis is critical for optimizing raw material quality, processing conditions and predicting the performance of the end product. Selecting and applying appropriate analysis methods depends on the desired properties and application area.