Grafting PMMA Brushes from α-Alumina Nanoparticles via SI-ATRP

ACS Applied Materials & Interfaces
Amir KhabibullinKrzysztof Matyjaszewski

Abstract

Alumina nanoparticles are widely used as nanofillers for polymer nanocomposites. Among several different polymorphs of alumina, α-alumina has the most desirable combination of physical properties. Hence, the attachment of polymer chains to α-alumina to enhance compatibility in polymeric matrixes is an important goal. However, the chemical inertness and low concentration of surface hydroxyl groups have rendered polymer modification of α-alumina a long-standing challenge. Herein, we report that activation of α-alumina in concentrated or molten NaOH as well as in molten K2S2O7 increased polymer graft density up to 50%, thereby facilitating the synthesis of α-alumina brush particles with uniform grafting density of 0.05 nm(-2) that are readily miscible or dispersible in organic solvents or in chemically compatible polymeric hosts.

References

Mar 21, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Krzysztof MatyjaszewskiAndy Kusumo
Mar 25, 2011·Macromolecular Rapid Communications·Joanna PietrasikKrzysztof Matyjaszewski
Feb 9, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Caroline SugnauxHarm-Anton Klok
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Jun 22, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Satyajeet OjhaMichael R Bockstaller
Jan 31, 2014·ACS Applied Materials & Interfaces·Ying LiLinda S Schadler
Apr 25, 2014·Journal of the American Chemical Society·Krzysztof Matyjaszewski, Nicolay V Tsarevsky
Nov 15, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Alei DangMichael R Bockstaller
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Oct 16, 2015·ACS Applied Materials & Interfaces·Carmen Cobo SánchezEva Malmström

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Citations

Oct 28, 2019·Biomaterials Science·Irawan Pramudya, Hoyong Chung
Nov 11, 2020·Advances in Colloid and Interface Science·Fatemeh Ahangaran, Amir H Navarchian
Dec 14, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Zongyu WangKrzysztof Matyjaszewski

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