A high-density 4-vinylpyridine membrane for rapid purification of antibodies

We fabricate a novel P4VP@M for rapid enrichment of rituximab from complex samples. The P4VP@M exhibited excellent anti-fouling ability, high binding capacity (277.3 mg g −1 ), good recovery (>92.6%), purity (>94.8%) and long-term stability (>40 days).