Browsing by Author "Rikkou-Kalourkoti, Maria D."
Now showing items 1-16 of 16
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Article
Amphiphilic single and double networks: a small-angle X-ray scattering investigation
Zhang, X. K.; Kyriakos, K.; Rikkou-Kalourkoti, Maria D.; Kitiri, E. N.; Patrickios, Costas S.; Papadakis, Christine M. (2016)We investigated the microphase-separated morphologies of water-swollen amphiphilic single and double polymer networks using small-angle X-ray scattering (SAXS). The networks consist of (i) a first conetwork containing ...
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Article
Degradable amphiphilic end-linked conetworks with aqueous degradation rates determined by polymer topology
Rikkou-Kalourkoti, Maria D.; Loizou, Elena; Porcar, L.; Butler, P.; Patrickios, Costas S. (2009)Degradable amphiphilic conetworks, based on end-linked amphiphilic ABA triblock copolymers with a labile fragment in the middle, were synthesized by sequential group transfer polymerization (GTP) of monomers and cross-linker, ...
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Article
Double Networks Based on Amphiphilic Cross-Linked Star Block Copolymer First Conetworks and Randomly Cross-Linked Hydrophilic Second Networks
Rikkou-Kalourkoti, Maria D.; Kitiri, E. N.; Patrickios, Costas S.; Leontidis, Epameinondas; Constantinou, Martha; Constantinides, G.; Zhang, X. K.; Papadakis, Christine M. (2016)This study presents the preparation and characterization of double networks (DN) based on a first amphiphilic polymethacrylate conetwork (APCN) and a second polyacrylamide network. The APCN first network comprised ...
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Article
End-linked amphiphilic polymer conetworks: synthesis by sequential atom transfer radical polymerization and swelling characterization
Rikkou-Kalourkoti, Maria D.; Kolokasi, Maria; Matyjaszewski, K.; Patrickios, Costas S. (2010)Conetworks based on end-linked homopolymers and amphophilic gradient copolymers were synthesized by the atom transfer radical polymerization (ATRP) of 2-(dimethylamino)ethyl methaerylate (DMAEMA, hydrophilic monomer), ...
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Article
End-linked, amphiphilic, degradable polymer conetworks: Synthesis by sequential atom transfer radical polymerization using a bifunctional, cleavable initiator
Rikkou-Kalourkoti, Maria D.; Loizou, Elena; Porcar, L.; Matyjaszewski, K.; Patrickios, Costas S. (2012)End-linked, degradable, amphiphilic polymer conetworks (APCNs) of various compositions and architectures were synthesized by sequential atom transfer radical terpolymerization of monomers and cross-linker using a cleavable, ...
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Book Chapter
Model Networks and Functional Conetworks
Rikkou-Kalourkoti, Maria D.; Patrickios, Costas S.; Georgiou, Theoni K. (Elsevier, 2012)This chapter reviews work on perfect or model homopolymer networks and also on functional, mainly amphiphilic, but less perfect polymer conetworks. The chapter focuses on work published during the past 10 years, but ...
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Article
Polymers prepared using cleavable initiators: Synthesis, characterization and degradation
Rikkou-Kalourkoti, Maria D.; Patrickios, Costas S. (2011)Following the great interest in polymers based on degradable monomers and degradable cross-linkers, there is now an increasing activity in the controlled synthesis of polymers using degradable initiators. The degradation ...
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Article
Structural characterization of amphiphilic polymer conetworks end-linked with the optimal amount of cross-linker
Rikkou-Kalourkoti, Maria D.; Loizou, Elena; Patrickios, Costas S.; Porcar, L. (2010)Amphiphilic polymer conetworks were synthesized by the end-linking of ABA triblock copolymers using optimal (minimal) amount of cross-linker in pursuit of nanoscale phase separated materials with a long-range order. ...
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Article
Synthesis and characterization of amphiphilic diblock copolymers of 2-(1-imidazolyl)ethyl methacrylate and styrene
Rikkou-Kalourkoti, Maria D.; Panteli, Panayiota A.; Patrickios, Costas S. (2014)Six amphiphilic diblock copolymers based on the hydrophilic monomer 2-(1-imidazolyl)ethyl methacrylate (ImEMA) and the hydrophobic monomer styrene (Sty) were prepared by sequential reversible addition-fragmentation chain ...
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Article
Synthesis and characterization of end-linked amphiphilic copolymer conetworks based on a novel bifunctional cleavable chain transfer agent
Rikkou-Kalourkoti, Maria D.; Patrickios, Costas S. (2012)A novel bifunctional bis(hemiacetal ester) chain transfer agent (CTA), 1,2-bis[1-(4-cyano-4-methyl-1-oxo-4-(phenylcarbonothioylthio)butanoxy)ethoxy] ethane (CMPTBEE), appropriate for the reversible addition-fragmentation ...
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Article
Synthesis and characterization of hyperbranched amphiphilic block copolymers prepared via self-condensing RAFT polymerization
Rikkou-Kalourkoti, Maria D.; Elladiou, Marios; Patrickios, Costas S. (2015)Four families of hyperbranched amphiphilic block copolymers of styrene (Sty, less polar monomer) and 2-vinylpyridine (2VPy, one of the two more polar monomers) or 4-vinylpyridine (4VPy, the other polar monomer) were prepared ...
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Article
Synthesis and characterization of rigid functional anionic polyelectrolytes: Block copolymers and star homopolymers
Rikkou-Kalourkoti, Maria D.; Kassi, Eleni; Patrickios, Costas S. (2012)Seven cyclolinear polymers bearing the tertiary-butyl α- (hydroxymethyl)acrylate (TBHMA) ether dimer were prepared using reversible addition-fragmentation chain transfer (RAFT) polymerization. Of the seven polymers, five ...
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Article
Synthesis and characterization of robust double-networks based on end-linked, pH-responsive first networks
Kitiri, Elina N.; Rikkou-Kalourkoti, Maria D.; Sophocleous, Manolia; Patrickios, Costas S. (2015)Abstract Fragile, end-linked hydrophilic tertiary amine based methacrylate (first) networks were mechanically reinforced using the double-network principle, via the introduction of a polyacrylamide second network. Reinforcement ...
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Article
The synthesis of pyrrolo[2,3-c][1,2,6]thiadiazine-5-carbonitriles from (4H-1,2,6-thiadiazin-4-ylidene)malononitriles
Kalogirou, Andreas S.; Koutentis, Panayiotis Andreas; Rikkou-Kalourkoti, Maria D. (2010)[3,5-Bis(dialkylamino)-4H-1,2,6-thiadiazin-4-ylidene]propanedinitriles 6a-c, react with sodium methoxide or ethoxide to give the corresponding 6-alkoxy-4-dialkylamino substituted pyrrolo[2,3-c][1,2,6]thiadiazine-5-carbonitriles ...
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Article
Synthesis, characterization and thermolysis of hyperbranched homo- and amphiphilic Co-polymers prepared using an inimer bearing a thermolyzable acylal group
Rikkou-Kalourkoti, Maria D.; Matyjaszewski, K.; Patrickios, Costas S. (2012)Degradable hyperbranched polymers were synthesized via self-condensing atom transfer radical copolymerization of methyl methacrylate (MMA) with a novel inimer bearing a thermolyzable acylal group. This inimer was ...
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Article
Well-defined networks with precisely located cleavable sites: Structure optimization and core functionality determination
Rikkou-Kalourkoti, Maria D.; Patrickios, Costas S. (2008)A study was conducted to determine the core functionality of well-defined covalent polymer networks with precisely located cleavable sites. Covalent polymer networks consists of chemically interconnected polymer chains ...