Polyvinyl Acetal (PVA) is a porous synthetic polymer. PVA emulsions have traditionally been used as adhesives for porous materials; wood, paper, and cloth. PVA is also used in paint and other industrial coatings. Rippey understood the potential of this unique material and resynthesized the chemistry to develop a “new” material with optimized physical properties that could be readily adapted for critical contact cleaning applications.
![SEM_1b SEM_1b](https://www.rippey.com/wp-content/uploads/2018/05/SEM_1b.png)
1.Water soluble Polyvinyl Alcohol (PVOH)
2.Reacts with an Aldehyde (-CHO) in the presence of a Catalyst
3.To form water insoluble Polyvinyl Acetal (PVA)
![PVA reaction_3 PVA reaction_3](https://www.rippey.com/wp-content/uploads/2018/01/PVA-reaction_3.png)
Rippey PVA
![Wiper_2 Wiper_2](https://www.rippey.com/wp-content/uploads/2018/01/Wiper_2.png)
- Highly porous structure with excellent fluid absorption and retention characteristics
- Soft and pliable when moist with extremely high mechanical toughness
- Low releasable contamination
- Excellent chemical resistance
- Tunable physical properties
- Surface morphology can be engineered to enhance or resist adhesion of particles
- Electrokinetic properties can be modified to control particle repulsion behavior
- Safe for ESD sensitive equipment and surfaces