Journal of Polymer Research

, 25:193 | Cite as

Enhanced amination and adsorption performance of functional copolymer synthesized via RAFT-mediated radiation grafting in emulsion

  • Jordan F. MadridEmail author
  • Yuji Ueki
  • Lucille V. Abad
  • Takeshi Yamanobe
  • Noriaki Seko


Grafted polymer substrates bearing diglycol amic acid (DA) ligands for Eu and Sm adsorption were prepared using a two-step post-grafting modification of polyethylene/polypropylene-g-poly(glycidyl methacrylate) (PE/PP-g-PGMA) that was synthesized through reversible addition-fragmentation chain transfer (RAFT)-mediated γ-radiation induced graft polymerization in emulsion phase. The PE/PP-g-PGMA prepared with RAFT mediation exhibited better reactivity towards amination reaction at 40 °C than the graft copolymers prepared without RAFT mediation, with the epoxide to amino group conversion of the former exceeding the latter by as much as 20%. The DA ligands were incorporated to the aminated graft copolymer by subsequent reaction with diglycolic anhydride to yield the DA-modified PE/PP-g-PGMA adsorbent. The effects of pH and competing ions on the uptake of Eu and Sm have been investigated. The DA-modified PE/PP-g-PGMA prepared with RAFT mediation showed higher Eu and Sm adsorption percentage than the DA adsorbent that was synthesized without RAFT mediation. The DA-modified PE/PP-g-PGMA exhibited higher affinity for Eu over Cu and Fe in acidic solutions.


RAFT mediation Radiation-induced grafting Rare earth elements Adsorption Diglycol amic acid 



The authors gratefully acknowledge: Japan Society for the Promotion of Science (JSPS) for the RONPAKU (JSPS) fellowship awarded to J.F. Madrid; Philippine Council for Industry, Energy and Emerging Technology Research and Development, Department of Science and Technology (PCIEERD, DOST) for the financial support extended to J.F. Madrid; and Dr. Atsumi Miyashita (Research Project Positron Nanoscience, QST) for the XPS measurements.


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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.Department of Science and TechnologyPhilippine Nuclear Research InstituteQuezon CityPhilippines
  2. 2.Division of Molecular ScienceGunma UniversityKiryuJapan
  3. 3.Research Project Environmental Polymer, Quantum Beam Science DirectorateNational Institutes for Quantum and Radiological Science and TechnologyTakasaki CityJapan

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