Title
Structureproperty Relationships of Polymers in Membranes: Scientific evidence for presence of Pores on the membrane surface usi,Used
Delivery time: 8-12 business days (International)
Asymmetric Cellulose acetate membranes were first developed and used for water desalination. Though the inventors designed membranes to be porous on surface which would separate salt from water by adsorption of pure water on the surface, the prevailing scientific community felt it was diffusion of pure water from the membrane which caused separation. Even after polyamide RO membranes became available which were derived by surface modification of polysulfone UF membranes that were well recognized for their porous nature, the solutiondiffusion theories continued. We were compelled to take up this work to give additional evidence for existence of pores on the surface of all membranes those could separate solutes from solutions. We demonstrated that application of vacuum at outlet of membrane should improve the flux only if the membrane was not a continuous surface. Applying vacuum at outlet of the membrane is not same as applying that much additional pressure at the feed side. Polyamides that cannot form continuous structures were synthesized and demonstrated to produce porous desalination RO Membranes, with higher flux under vacuum.
By changing our most important processes and
products, we have already made a big leap forward. This ranges from the
increased use of more sustainable fibers to the use of more
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efficient waste management in our value chain.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, please visit www.P65Warnings.ca.gov.
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Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.