| Adhesives | Cosmetic Coatings | Dielectric Materials |
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Pressure Sensitive Adhesives for Industrial Applications:
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SciGenesis uses advanced nanoparticle technology to create convertible adhesion on demand. Our nanoparticle-modified pressure sensitive adhesive (PSA) has been proven in a wide variety of test conditions – showing adhesion over the temperature range of -45°C to 241°C. The superior adhesive performance is not the only impressive feature of our platform adhesion technology. Upon activation of our pressure sensitive adhesive, we can convert to an industrial strength adhesive having 180° peel strengths of greater than 2 lb/ square inch. Additionally our system can be designed so that the adhesion is reversible on demand. With exposure to your choice of external stimulus (visible light, heat, radio frequency), the nano-particles create a tack-free surface which takes little to no force to remove cleanly from the substrate. The figures below demonstrate the performance of lab scale systems as a function of UV cure after exposure to extreme temperature conditions and prior to conversion to permanent adhesion.
 Figure 1 Samples exposed to 145°C for four hours prior to testing
 Figure 2 Samples exposed to -45°C for four hours prior to testing
ADVANTAGES:
- Superior performance - adhesion in a variety of environments
- On demand - loss of adhesion with only seconds in response time
- Simple – use visible light, heat, or radio frequency to get loss of adhesion
- Clean removal – no residue of the adhesive left behind
- Adaptable – modifiable for use with any adhesive system
Consider the industrial possibilities with such a system. This adhesive would be amenable for use in the automotive industry, aerospace industry and many more. The ability to initially affix and reposition at will, such as an applique, then after an external stimulus is applied, result in a permanent adhesive bond would be desirable in any number of applications. This is a 'user friendly' adhesive system, being a non solvent based system and 'single pot' rather than current permanent adhesive systems such as two part epoxies commonly used today. Once the lifetime of the material has reached an end, the adhesion can be reversed resulting in a de-bonding event at the material/substrate interface leaving behind a clean substrate. This technology is easily inserted in the current adhesive manufacturing supply chain.
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Adhesive systems for medical applications:
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 Figure 1 Demonstration (from top to bottom) of SciGenesis System 2 without sensitizer, with sensitizer prior to stimulus and with sensitizer after exposure to visible light
Another exciting technology available from our adhesives division is our unique anti-microbial easy release bio-adhesive. These stimuli responsive pressure sensitive bio-adhesive systems have been developed for advanced wound care of traumatic injuries. These systems bond to skin and or damaged tissue with the typical strength of current medical bandages available on the market. Upon exposure to visible light however, the adhesive removes cleanly from the substrate without any tearing, pulling or other damaging events to the wounded area and surrounding skin. Additionally, during the de-bonding event, the wound is cleaned via an anti-microbial mechanism that targets both gram (-) and gram (+) bacteria.
Table 1 Thin film anti-microbial studies of SciGenesis PSAs containing visible light sensitizer
| Sample ID |
Sensitizer Concentration (wt %) |
Film testing with S. aureus, Gram-(+)(a)
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Film testing with E. coli, Gram-(-)(a)
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| Control |
None |
0 log |
0 log |
| System 1 |
0.2 wt% |
1 log |
2 log |
| System 2 |
1.0 wt% |
2 log |
2 log |
| System 3 |
1.0 wt% |
1 log |
1 log |
Imagine the medical possibilities with such a system. Wound care – a soldier's blast wound can be covered in the field when precious seconds count, but the covering can be cleanly removed once the soldier is in a safer medical treatment area. Burn care – one of the most painful aspects of burn care is removing the bandages. SciGenesis can provide a system that will allow the burn covering to be easily removed from the burn without further trauma while also combating the onset of infection to the wound area. Pediatric/Geriatric care – fragile skin can be further damaged by traditional bandages, the SciGenesis adhesive technology avoids these issues.
At SciGenesis, we are highly skilled in the art of utilizing nano in macro approach to technology in order to design common adhesive systems to provide uncommonly superior levels of performance. Our systems are readily tailor made to meet your demands. Whether for a medical application or another area of interest, contact us and we'll be happy to work together to meet your application needs!
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