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Applications

Polymers and Plastics    Polymers and Plastics

Polymers and plastics are used in many fields such as food grade packaging and medical technology. Their composition is especially important when the polymers get in direct contact with food or humans. With EnviroESCA the concentration of hazardous contaminations can be quantified regardless of their vacuum compatibility.

 

 Investigation of a Superabsorbent Polymer (SAP) with EnviroESCA

 

 Application Note #000393
KeyWords: XPS, Superabsorbent Polymers, Water,
Solid-liquid and Solid-gas Interfaces,
Environmental Charge Compensation

Investigation of a Superabsorbent Polymer (SAP) with EnviroESCA

This application note describes how EnviroESCA can be used to analyze the surface of superabsorbent polymers under different environmental conditions. EnviroESCA’s ability to perform X-ray Photoelectron Spectroscopy (XPS) under ambient conditions shows its main advantage when being applied to insulating material that change their surface (chemistry) when they come in contact with different liquids and gases - in this case water. Specimens that tend to charge up under vacuum conditions can be measured with ease.

   

Sample drying in the analysis chamber

Sample drying in the analysis chamber
(1000x speed – real time about 3 hours)


Drying and shrinking of the SAP sample in the analysis chamber can be observed easily with the sample observation camera. The sample position was adjusted for each measurement to keep the sample surface in focus, which is also visible in this time-lapse animation.

    
   Investigation of Polymers and Plastics with EnviroESCA  


Application Note #000381
KeyWords: XPS, Polymers, Measurements, PTFE, PET, Toy Brick, Charge Compensation

Investigation of Polymers and Plastics with EnviroESCA

This application note describes how EnviroESCA can be used to analyze the surface of polymers and bulk insulating material. EnviroESCAs ability to perform X-Ray Photoelectron Spectroscopy (XPS) at non vacuum conditions shows its main advantage when being applied to insulating material. Specimens that tend to charge up under vacuum conditions and need to be extensive charge compensated with expensive low en-ergy electron and low energy ion sources can be measured with ease and without the problem of overcompensation.


    
   Investigation of Hydrogel Contact Lenses with EnviroESCA  


Application Note #000383
KeyWords: XPS, Medical and Biomaterials, Hydrogel, Contact Lens, Measurements, Quality Control

Investigation of Hydrogel Contact Lenses with EnviroESCA

This application note presents how EnviroESCA can be used to analyze the surface of water filled hydrogels, such as contact lenses like in the present study as an example for medical and biomaterials. The advantage of such investigations under non ultrahigh vacuum conditions is demonstrated and results from wet and dry samples are compared.

    



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EnviroESCA Product Brochure
EnviroESCA Product Brochure


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