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ABSTRACT Carboxylated polymer microspheres were prepared by multi steps seeded polymerization using methacrylic acid as a comonomer. Ethylene glycol dimethacrylate was used as a crosslinking
agent in the second step of seeded copolymerization to provide a crosslinked network in order to limit the penetration of carboxyl group to interior of the microspheres. In this research a
series of polystyrene/poly(methyl methacrylate-ethylene glycol dimethacrylate)/poly(methyl methacrylate-methacrylic acid) composite polymer microspheres with varying proportion of
methacrylic acid were prepared. Carboxyl group density increased with the increase of methacrylic acid content in the recipe. Physical immobilization of some biologically active
macromolecules was studied at the respective isoelectric pH value under similar conditions. The specific activities of adsorbed trypsin on different composite polymer microspheres were also
measured. SIMILAR CONTENT BEING VIEWED BY OTHERS THE MACROSCOPIC SHAPE OF ASSEMBLIES FORMED FROM MICROPARTICLES BASED ON HOST–GUEST INTERACTION DEPENDENT ON THE GUEST CONTENT Article Open
access 18 March 2021 HYDROTHERMAL CROSSLINKING OF POLY(FLUORENYLAMINE) WITH STYRYL SIDE CHAINS TO PRODUCE INSOLUBLE FLUORESCENT MICROPARTICLES Article 14 July 2022 INFLUENCE OF NANOPARTICLE
ENCAPSULATION AND ENCODING ON THE SURFACE CHEMISTRY OF POLYMER CARRIER BEADS Article Open access 24 July 2023 ARTICLE PDF REFERENCES * M. S. Rosa and F. Jacqueline, _J. Polym. Sci., Part A:
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Chemistry, Rajshahi University, Rajshahi, 6205, Bangladesh Hasan Ahmad, Md. Masem Hossain, Md. Mahbubor Rahman & M A Jalil Miah Authors * Hasan Ahmad View author publications You can
also search for this author inPubMed Google Scholar * Md. Masem Hossain View author publications You can also search for this author inPubMed Google Scholar * Md. Mahbubor Rahman View author
publications You can also search for this author inPubMed Google Scholar * M A Jalil Miah View author publications You can also search for this author inPubMed Google Scholar CORRESPONDING
AUTHOR Correspondence to Hasan Ahmad. RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Ahmad, H., Hossain, M., Rahman, M. _et al._ Monodispersed
Carboxylated Composite Polymer Microspheres and Physical Immobilization of Biomolecules. _Polym J_ 39, 428–434 (2007). https://doi.org/10.1295/polymj.PJ2006204 Download citation * Received:
27 December 2006 * Accepted: 06 February 2007 * Published: 15 March 2007 * Issue Date: 01 May 2007 * DOI: https://doi.org/10.1295/polymj.PJ2006204 SHARE THIS ARTICLE Anyone you share the
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Nature SharedIt content-sharing initiative KEYWORDS * Carboxylated Polymer * Biomolecules * Immobilization * Specific Activity * Hydrophilic