Polymer Coated Silica Nanoparticles
Polymer coated silica nanoparticles are made with various forms of polymer coating to provide unique properties for a variety of applications. Available in both Powder and Aqueous Dispersion form – with Certificate of Analysis
We use proprietary techniques to coat the nanoparticles with a thin (less than 2nm) layer of polymer. The different polymer coatings provide unique surface functionality.
The small quantities can be purchased directly below. If you want larger quantities please contact us and we can provide a link for purchasing the product you want.
Pricing for the larger quantities is as follows:
1g Polymer Coated SiO2 Powder = $395
10g Polymer Coated SiO2 Powder = $1600
100ml - 50mg/ml Aqueous Dispersion (5g of Polymer SiO2) = $900
500ml - 50mg/ml Aqueous Dispersion (25g of Polymer SiO2) = $3300
We can also polymer coat any size SiO2 particle from 20nm to 1000nm. If the size you want is not in the drop down, just contact us and we can get you the size you want. Also, for custom or bulk orders please contact us >
All sales are final. No refunds or returns. Standard Terms and Conditions of Sale.
Example Certificates of Analysis
Certificate of Analysis - Polymer Coated 80nm Silica Nanoparticles in H2O - 1560
Certificate of Analysis - Polymer Coated 20nm Silica Nanoparticle Powder - 1635
Safety Data Sheets
SDS Polymer Coated Silica Nanoparticles in H2O
SDS Polymer Coated Silica Nanoparticle Powder
Frequently Asked Questions
How are these nanoparticles made?
GE&R silica nanoparticles are synthesized using a Stober method to provide very high purity (+99.999%) spherical particles with narrow size distribution. The Stober method is a technique which grows the silica nanoparticles in solution. Our powder silica products are obtained by drying off the solution after the particles have formed. For our mono-dispersion products we use special filtration techniques to wash the particles into either an aqueous or ethanol solution which maintains the mono-dispersity.
How do I disperse the powder into solution?
Dispersing the powder nanoparticles into solution is not easy. The smaller the particle size, the more difficult it can be to disperse. The most common method of dispersing is ultrasonication. In our experience it can take 8+hours of ultrasonication to mono-disperse 100nm particles into water. For smaller sizes, it may not be possible to achieve mono-dispersion. If your application requires the nanoparticles to be dispersed into solution, you may want to consider starting with the dispersion products as opposed to the powder.
Can you disperse your nanoparticles into a different solvent?
Yes. We can do custom dispersions into various solutions with a minimum 500ml quantity. Please contact us if you would like a quote for this custom service.
How should I store these products?
Products should be stored in ambient dry conditions. Do NOT freeze.
Can I get copies of the SEM images for my product?
Yes. Just send an email to sales@geandr.com with the batch number of your product. The batch number can be found on the product label and/or the Certificate of Analysis.
The particles look like they are settling in the dispersion – what should I do?
The dispersions with larger particles will settle quicker over time. Just stir or shake vigorously to re-disperse the particles.
We’re here to help.
We have formulations to make any silica particle size between 20nm and 1000nm – with available bulk
pricing. We can also disperse into custom solutions/solvents. Tell us what you’re looking for >>