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Preparation of Poly(pentafluorophenyl acrylate) Functionalized SiO2 Beads for Protein Purification
Published on: November 19, 2018
Protein adsorption on polymer-modified silica particle surface
Tatsuya Tsukagoshi1, Yukishige Kondo, Norio Yoshino
1Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 12-1 Ichigaya-Funagawara, Shinjuku-ku, Tokyo 162-0826, Japan.
Colloids and Surfaces. B, Biointerfaces
|November 23, 2006
Summary
Modifying surfaces with polymers like poly(acrylamide) and poly(styrene) using surface-initiated polymerization and ATRP can suppress protein adsorption. The amount of polymer coating is key to reducing protein adhesion on modified silicon and silica surfaces.
Area of Science:
- Materials Science
- Polymer Chemistry
- Biomaterials Engineering
Background:
- Surface modification is crucial for controlling biomaterial interactions.
- Protein adsorption on surfaces can lead to undesirable biological responses.
- Developing methods to prevent protein adsorption is essential for advanced materials.
Purpose of the Study:
- To investigate the effect of polymer coatings on protein adsorption.
- To explore surface modification techniques for creating dense polymer layers.
- To evaluate the relationship between polymer amount and protein adsorption suppression.
Main Methods:
- Surface modification of silicon substrates and silica particles using surface-initiated polymerization and atom transfer radical polymerization (ATRP).
- Coating surfaces with five different polymers: poly(2-methoxyethyl methacrylate) (pMEMA), poly(2-hydroxyethyl methacrylate) (pHEMA), poly(acrylamide) (pAAm), poly(methyl methacrylate) (pMMA), and poly(styrene) (pSt).
- Quantifying polymer chain density via water contact angle and polymer amount measurements.
- Measuring protein adsorption (albumin and fibrinogen) on modified silica particles.
Main Results:
- Dense polymer chain layers were successfully grafted onto surfaces using combined polymerization techniques.
- The amount of polymer coating significantly influenced protein adsorption.
- Increased polymer coverage led to a greater suppression of albumin and fibrinogen adsorption.
- Different polymers exhibited varying degrees of effectiveness in protein adsorption inhibition.
Conclusions:
- The quantity of polymer grafted onto a surface is a critical factor in preventing protein adsorption.
- Surface-initiated polymerization combined with ATRP offers a robust method for creating protein-repellent surfaces.
- These findings have implications for designing advanced biomaterials with controlled surface properties.
