Abstract
Well-defined homopolymer and diblock copolymer were prepared by RAFT polymerization mediated by Z-supported chain transfer agent (CTA) onto silica particles. Silica-supported 3-(methoxycarbonylphenylmethylsulfanylthiocarbonylsulfanyl)propionic acid (Si-MPPA) was used to mediate RAFT polymerization of methyl acrylate, methyl methacrylate, butyl acrylate, and styrene to produce homopolymer grafted silica. The introduction of a free CTA such as MPPA and 2-(2-cyanopropyl) dithiobenzoate (CPDB) in solution during polymerization could significantly improve the control on molecular weight and polydispersity of grafted polymers, and the polymerization in the presence of CPDB was more controlled than that using MPPA. The resultant homopolymer grafted silica was utilized as a macro-CTA to mediate chain extension polymerization, and a series of diblock copolymer grafted silica hybrids were prepared. Aminolysis of the polymers allowed the recovery of the polymeric chains showing 100% chain extension, as illustrated b...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
