I want to perform XRD on 1-2mm thick and 2*2 cm size plastic films. Do they also need any prior treatment or can I perform the analysis directly?
There is no need to perform any prior treatment.
However, depending on the XRD instruments you used (reflection or transmission XRD). You'd better prepare your XRD specimens with a proper dimension.
If you use a transmission XRD and want to obtain accurate information on the crystal structures. It is recommended to prepare thicker films (~0.3 mm).
No need for pretreatment; however, if the environment has humidity, then you need to dehydrate the sample for 5-10 minutes at a temperature below at least 10 degrees to its glass transition temperature.
The preparation required for XRD analysis of plastic films depends on the specific material and the type of XRD analysis you plan to perform. In general, plastic films are amorphous, meaning they lack a defined crystal structure, which makes them challenging to analyze using XRD.
If you are interested in identifying the chemical composition of the plastic film, you may need to prepare a thin section of the material or dissolve it in a suitable solvent and analyze the resulting solution using other analytical techniques such as spectroscopy.
On the other hand, if you want to analyze the crystallinity of the plastic film, you may be able to perform XRD directly on the film. However, you may need to consider the following factors:
Overall, it is recommended to consult with an XRD specialist or an analytical lab to determine the best approach for XRD analysis of plastic films.
PXRD can be recorded using the film directly if the film is stable in normal conditions. In case of moisture sensitive films of could be stored using a chember containing some dehydrating agent prior the PXRD analysis.
No need for pretreatment,using the film directly if the film is stable in normal conditions.
This will depend on the chemical nature of your polymer (for example if it is hygroscopic or not);
if you want to examine the crystalline structure you need to prepare the sample in accordance with the morphology you want to obtain, slow cooling, fast cooling, in the presence of solvents , etc
Depend on polymer type. Different polymer may need the different method of preparation.
Well, all analytical sample are required to undergo pretreatment before test is carried out. You are advised to select which Standard Testing Procedure to be used e.g. ASTM, EU,... Then the Standard testing method will be spelled out.
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