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Determination of Water Content in Rubber by Distillation (CAT#: STEM-PPA-0124-YJL)

Introduction

Synthetic rubber is usually derived from additional polymers of polyene monomers and, unless the synthetic rubber is disclosed as a polysulfide rubber, laminates containing such a layer will be classified with additional polymers. Moisture content is an important factor affecting the processing technology, product appearance and product characteristics of resins such as polyamide (PA) and polycarbonate (PC). In the injection molding process, if plastic particles with excessive moisture content are used for production, there will be some processing problems that will eventually affect the quality of the finished product, such as: surface cracking, reflection, and mechanical properties such as impact resistance and tensile strength. Therefore, the control of moisture content is crucial for the production of high-quality plastic products.




Principle

Azeotropic distillation refers to a series of techniques that destroy the azeotropic composition in distillation to carry out distillation or fractionation, and use two organic solvents to form an azeotrope for distillation.
Azeotropic distillation, also known as azeotropic distillation, is to add a selected third component to the separated mixed liquid to form a new azeotrope with one or more components in the original mixture. And its boiling point is lower than that of any original component. In this way, the new azeotrope is distilled from the top of the column during distillation, while the bottom product is a pure component, thereby achieving the purpose of separating the original mixture.
Azeotropic distillation is suitable for separating mixed liquids with only azeotropic composition and relative volatility close to 1.

Applications

Food industry; Petroleum industry

Procedure

1. Add the sample to the still.
2. Add to collection bottle.
3. Heat.
4. Collect the liquid.
4. Calculate moisture content.

Materials

• Sample Type: liquid or powder