Measurement of the polydispersity index in the laboratory

You need to measure the polydispersity index of your polymers

Firstly, the polydispersity index is a measure of the heterogeneity of a sample as a function of its size. Polydispersity can be due to the size distribution in a sample or to agglomeration or aggregation of the sample during isolation or analysis.

Thus, in the case of a peak, the polydispersity index is 1, in the case of a Gaussian, the index may be greater than 3. The polydispersity index corresponds to the ratio of the molar mass by weight to the molar mass by number.

The polydispersity index can be measured with instruments using dynamic light scattering (DLS).

Therefore, the support of a laboratory with state-of-the-art analytical equipment including DLS instruments is necessary to measure the polydispersity index of your polymers.

FILAB measures the polydispersity index of your polymers in the laboratory

Through our three levels of services: analysis, expertise and R&D support, FILAB assists companies from all sectors in their polydispersity index measurement needs. FILAB provides its customers with the know-how and experience of its team, as well as a 2100m² analytical park equipped with state-of-the-art equipment.

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The positive aspects of FILAB

  • A highly qualified team

  • Responsiveness in responding to and processing requests

  • A complete analytical park of 2100m²

  • Tailor-made support

Thomas GAUTIER Head of Materials Department
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