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Hasan E, Furzeland S, Atkins D, Adams DJ, Weaver JVM. Direct synthesis and aqueous solution behavior of pH-responsive, zwitterionic and three-layered branched copolymer nanoparticles. Polym Chem 2012. [DOI: 10.1039/c2py00564f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Greenall MJ, Schuetz P, Furzeland S, Atkins D, Buzza DMA, Butler MF, McLeish TCB. Controlling the Self-Assembly of Binary Copolymer Mixtures in Solution through Molecular Architecture. Macromolecules 2011. [DOI: 10.1021/ma2008546] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Peter Schuetz
- Unilever R&D Colworth, Colworth Park, Sharnbrook, MK44 1LQ, U.K
| | - Steve Furzeland
- Unilever R&D Colworth, Colworth Park, Sharnbrook, MK44 1LQ, U.K
| | | | - D. Martin A. Buzza
- Department of Physics, The University of Hull, Cottingham Road, Hull HU6 7RX, U.K
| | | | - Tom C. B. McLeish
- Department of Physics, Durham University, South Road, Durham DH1 3LE, U.K
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Adams DJ, Atkins D, Cooper AI, Furzeland S, Trewin A, Young I. Vesicles from Peptidic Side-Chain Polymers Synthesized by Atom Transfer Radical Polymerization. Biomacromolecules 2008; 9:2997-3003. [DOI: 10.1021/bm8006693] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dave J. Adams
- Unilever Corporate Research and Unilever R&D Colworth, Sharnbrook, Bedford, MK44 1LQ, United Kingdom, and Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - Derek Atkins
- Unilever Corporate Research and Unilever R&D Colworth, Sharnbrook, Bedford, MK44 1LQ, United Kingdom, and Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - Andrew I. Cooper
- Unilever Corporate Research and Unilever R&D Colworth, Sharnbrook, Bedford, MK44 1LQ, United Kingdom, and Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - Steve Furzeland
- Unilever Corporate Research and Unilever R&D Colworth, Sharnbrook, Bedford, MK44 1LQ, United Kingdom, and Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - Abbie Trewin
- Unilever Corporate Research and Unilever R&D Colworth, Sharnbrook, Bedford, MK44 1LQ, United Kingdom, and Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - Iain Young
- Unilever Corporate Research and Unilever R&D Colworth, Sharnbrook, Bedford, MK44 1LQ, United Kingdom, and Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
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Adams DJ, Adams S, Atkins D, Butler MF, Furzeland S. Impact of mechanism of formation on encapsulation in block copolymer vesicles. J Control Release 2008; 128:165-70. [PMID: 18436325 DOI: 10.1016/j.jconrel.2008.03.006] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2008] [Revised: 03/04/2008] [Accepted: 03/06/2008] [Indexed: 11/19/2022]
Abstract
Vesicles prepared from block copolymers have been mooted for the encapsulation of water-soluble molecules. This is because the membranes of polymer vesicles have been shown to be more stable than those in vesicles formed from lipids, with the membrane properties being tuned by the length and nature of the hydrophobic block in the polymer. The generally accepted mechanisms of vesicle formation involve either wrap-up of a lamellar sheet or formation via a sequence of micelle to worm to disks to vesicles. These should lead to efficient encapsulation. Alternatively, a method involving phase separation followed by re-structuring has been recently suggested. Here, we show that this final mechanism holds for vesicles formed from a PEO-b-PDEAMA copolymer by a pH switch and that this mechanism leads to highly inefficient encapsulation on vesicle formation.
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Affiliation(s)
- Dave J Adams
- Unilever Corporate Research, Colworth, Sharnbrook, Bedford, MK44 1LQ, United Kingdom.
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