1
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Rajbanshi A, Da Silva MA, Mahmoudi N, Janeczek A, Shaw A, Dawson J, Cook MT. Branched copolymer surfactants impart thermoreversible gelation to LAPONITE® gels. SOFT MATTER 2023; 20:103-114. [PMID: 38050736 DOI: 10.1039/d3sm01271a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
This investigation seeks to integrate LAPONITE® clay gels with thermoresponsive branched copolymer surfactants (BCSs) to develop advanced functional materials with temperature-induced sol-gel behaviour. It is known that a diverse range of molecules adsorb strongly to clays which may be used to control liberation of the species in healthcare applications, and as such the development of polymer/clay hybrid materials which can add function to the native clay behaviour are of great interest. BCS were synthesised with a structure that encompasses poly(ethylene glycol)methacrylate (PEGMA), ethylene glycol dimethacrylate (EGDMA), and dodecanethiol (DDT), conferring versatile and tuneable thermoresponsive attributes. Systematic modulation of the monomer : DDT/initiator ratio was used to facilitate the synthesis of BCS architectures spanning a range of molecular weights. Through application of small-amplitude oscillatory shear (SAOS) rheology and small-angle neutron scattering (SANS) in conjunction with controlled temperature variations, the sol-gel transition dynamics of these nanocomposite materials were elucidated. Complementary insights into the mechanisms underpinning this transition and temperature-induced alterations in the constituents are gleaned through the utilization of SANS techniques employing contrast-matching methodologies to mitigate clay and polymer scattering interference. It is found that heating systems from room- to body- temperature induces self-assembly of BCS in the bulk aqueous phase with concurrent structuration of clay in gel-forming samples with lower number average molecular weight (Mn). SANS study unpicks this phenomenon to find that gelation occurs with concurrent aggregation of BCS in the bulk, inducing clay-clay interactions only in lower Mn BCS systems with large nanoaggregates.
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Affiliation(s)
- Abhishek Rajbanshi
- UCL School of Pharmacy, University College London, London, WC1N 1AX, UK.
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, AL10 9AB, UK.
- Institute of Pharmaceutical Science, King's College London, London, SE1 9NH, UK
| | - Marcelo Alves Da Silva
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, AL10 9AB, UK.
| | - Najet Mahmoudi
- ISIS Muon and Neutron Source, Rutherford Appleton Laboratory, Harwell, Oxford, Didcot OX11 0QX, UK.
| | - Agnieszka Janeczek
- Renovos Biologics Ltd, Science Park, 2 Venture Rd, Chilworth, Southampton, SO16 7NP, UK.
| | - Allison Shaw
- Renovos Biologics Ltd, Science Park, 2 Venture Rd, Chilworth, Southampton, SO16 7NP, UK.
| | - Jonathan Dawson
- Renovos Biologics Ltd, Science Park, 2 Venture Rd, Chilworth, Southampton, SO16 7NP, UK.
- Institute of Developmental Sciences, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
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2
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Li Z, Yong H, Wang K, Zhou YN, Lyu J, Liang L, Zhou D. (Controlled) Free radical (co)polymerization of multivinyl monomers: strategies, topological structures and biomedical applications. Chem Commun (Camb) 2023; 59:4142-4157. [PMID: 36919482 DOI: 10.1039/d3cc00250k] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
Free radical (co)polymerization (FRP/FRcP) of multivinyl monomers (MVMs) has emerged as a powerful strategy for the synthesis of chemically and topologically complex polymers due to its unique reaction kinetics, which enables the preparation of polymers with multiple functional groups and novel macromolecular structures. However, conventional FRP/FRcP of MVMs inevitably leads to insoluble crosslinked materials. Therefore, the development of advanced strategies for the controlled polymerization of MVMs is essential for the preparation of chemically and topologically complex polymers. In this review, we introduce the gelation mechanism of conventional FRP of MVMs and present the strategies of controlled polymerization of MVMs for the preparation of chemically and topologically complex polymers. We also discuss polymers with unique topologies synthesized by controlled polymerization of MVMs, such as crosslinked networks, (hyper)branched, star, cyclic, and single-chain cyclized/knotted structures. Finally, biomedical applications of various advanced polymeric materials prepared by controlled polymerization of MVMs are highlighted and the challenges is this field are discussed.
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Affiliation(s)
- Zhili Li
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Haiyang Yong
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Kaixuan Wang
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Ya-Nan Zhou
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Jing Lyu
- Charles Institute of Dermatology, School of Medicine, University College Dublin, Dublin 4, Ireland.
| | - Lirong Liang
- Department of Clinical Epidemiology, Beijing Institute of Respiratory Medicine and Beijing Chao Yang Hospital, Capital Medical University, Beijing, 100020, China.
| | - Dezhong Zhou
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
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3
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Rajbanshi A, Mahmoudi N, Murnane D, Pavlova E, Slouf M, Dreiss C, Cook M. Combining branched copolymers with additives generates stable thermoresponsive emulsions with in situ gelation upon exposure to body temperature. Int J Pharm 2023; 637:122892. [PMID: 37001832 DOI: 10.1016/j.ijpharm.2023.122892] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/12/2023] [Accepted: 03/23/2023] [Indexed: 04/03/2023]
Abstract
Branched copolymer surfactants (BCS) containing thermoresponsive polymer components, hydrophilic components, and hydrophobic termini allow the formation of emulsions which switch from liquid at room temperature to a gel state upon heating. These materials have great potential as in situ gel-forming dosage forms for administration to external and internal body sites, where the emulsion system also allows effective solubilisation of a range of drugs with different chemistries. These systems have been reported previously, however there are many challenges to translation into pharmaceutical excipients. To transition towards this application, this manuscript describes the evaluation of a range of pharmaceutically-relevant oils in the BCS system as well as evaluation of surfactants and polymeric/oligomeric additives to enhance stability. Key endpoints for this study are macroscopic stability of the emulsions and rheological response to temperature. The effect of an optimal additive (methylcellulose) on the nanoscale processes occurring in the BCS-stabilised emulsions is probed by small-angle neutron scattering (SANS) to better comprehend the system. Overall, the study reports an optimal BCS/methylcellulose system exhibiting sol-gel transition at a physiologically-relevant temperature without macroscopic evidence of instability as an in situ gelling dosage form.
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4
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Saadati A, Hasanzadeh M, Seidi F. Biomedical application of hyperbranched polymers: Recent Advances and challenges. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116308] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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5
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Song X, Deng J, Zhang J. Ultra‐low degree of polymerization polyvinyl alcohol products prepared by oxidative chain scission: Method and mechanism. J Appl Polym Sci 2021. [DOI: 10.1002/app.50549] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xianni Song
- Institude of Chemical Material China Academy of Engineering Physics Mianyang China
- The State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan University Chengdu China
| | - Jianguo Deng
- Institude of Chemical Material China Academy of Engineering Physics Mianyang China
| | - Junhua Zhang
- The State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan University Chengdu China
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6
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Ma Y, Yang HM, Chen ZH, Li YN, Li JF, Sun XL, Wang XY, Tang Y. Highly branched polymethacrylates prepared efficiently: brancher-directed topology and application performance. Polym Chem 2021. [DOI: 10.1039/d1py01273h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of highly oil-soluble and branched polymethacrylates are prepared via ATRcP of 2-ethylhexyl methacrylate and divinyl brancher with high efficiency, focusing on the brancher effect on the structure-performance of the polymers.
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Affiliation(s)
- Yang Ma
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Beijing 100049, China
| | - Hong-Mei Yang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Zhi-Hao Chen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Ya-Ning Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Beijing 100049, China
| | - Jun-Fang Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Xiu-Li Sun
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Xiao-Yan Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Yong Tang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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7
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Penrhyn-Lowe OB, Flynn S, Cassin SR, Mckeating S, Lomas S, Wright S, Chambon P, Rannard SP. Impact of multi-vinyl taxogen dimensions on high molecular weight soluble polymer synthesis using transfer-dominated branching radical telomerisation. Polym Chem 2021. [DOI: 10.1039/d1py01103k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The creation of branched polymers by TBRT is influenced by the molecular dimensions of the polymerising species. A mechanistic understanding is presented that includes a radical lifetime sphere model that is unique to telomerisation conditions used.
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Affiliation(s)
- Oliver B. Penrhyn-Lowe
- Materials Innovation Factory & Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Sean Flynn
- Materials Innovation Factory & Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Savannah R. Cassin
- Materials Innovation Factory & Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Samuel Mckeating
- Materials Innovation Factory & Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Sarah Lomas
- Materials Innovation Factory & Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Stephen Wright
- Materials Innovation Factory & Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Pierre Chambon
- Materials Innovation Factory & Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Steve P. Rannard
- Materials Innovation Factory & Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
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8
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Kavand A, Anton N, Vandamme T, Serra CA, Chan-Seng D. Synthesis and functionalization of hyperbranched polymers for targeted drug delivery. J Control Release 2020; 321:285-311. [DOI: 10.1016/j.jconrel.2020.02.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/10/2020] [Accepted: 02/10/2020] [Indexed: 02/07/2023]
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9
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Gao Y, Zhou D, Lyu J, A S, Xu Q, Newland B, Matyjaszewski K, Tai H, Wang W. Complex polymer architectures through free-radical polymerization of multivinyl monomers. Nat Rev Chem 2020; 4:194-212. [PMID: 37128047 DOI: 10.1038/s41570-020-0170-7] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2020] [Indexed: 01/26/2023]
Abstract
The construction of complex polymer architectures with well-defined topology, composition and functionality has been extensively explored as the molecular basis for the development of modern polymer materials. The unique reaction kinetics of free-radical polymerization leads to the concurrent formation of crosslinks between polymer chains and rings within an individual chain and, thus, free-radical (co)polymerization of multivinyl monomers provides a facile method to manipulate chain topology and functionality. Regulating the relative contribution of these intermolecular and intramolecular chain-propagation reactions is the key to the construction of architecturally complex polymers. This can be achieved through the design of new monomers or by spatially or kinetically controlling crosslinking reactions. These mechanisms enable the synthesis of various polymer architectures, including linear, cyclized, branched and star polymer chains, as well as crosslinked networks. In this Review, we highlight some of the contemporary experimental strategies to prepare complex polymer architectures using radical polymerization of multivinyl monomers. We also examine the recent development of characterization techniques for sub-chain connections in such complex macromolecules. Finally, we discuss how these crosslinking reactions have been engineered to generate advanced polymer materials for use in a variety of biomedical applications.
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10
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Habibu S, Sarih NM, Sairi NA, Zulkifli M. Rheological and thermal degradation properties of hyperbranched polyisoprene prepared by anionic polymerization. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190869. [PMID: 31827835 PMCID: PMC6894563 DOI: 10.1098/rsos.190869] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 10/04/2019] [Indexed: 06/10/2023]
Abstract
Hyperbranched polyisoprene was prepared by anionic copolymerization under high vacuum condition. Size exclusion chromatography was used to characterize the molecular weight and branching nature of these polymers. The characterization by differential scanning calorimetry and melt rheology indicated lower Tg and complex viscosity in the branched polymers as compared with the linear polymer. Degradation kinetics of these polymers was explored using thermogravimetric analysis via non-isothermal techniques. The polymers were heated under nitrogen from ambient temperature to 600°C using heating rates from 2 to 15°C min-1. Three kinetics methods namely Friedman, Flynn-Wall-Ozawa and Kissinger-Akahira-Sunose were used to evaluate the dependence of activation energy (Ea ) on conversion (α). The hyperbranched polyisoprene decomposed via multistep mechanism as manifested by the nonlinear relationship between α and Ea while the linear polymer exhibited a decline in Ea at higher conversions. The average Ea values range from 258 to 330 kJ mol-1 for the linear, and from 260 to 320 kJ mol-1 for the branched polymers. The thermal degradation of the polymers studied involved one-dimensional diffusion mechanism as determined by Coats-Redfern method. This study may help in understanding the effect of branching on the rheological and decomposition kinetics of polyisoprene.
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Affiliation(s)
- Shehu Habibu
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Department of Chemistry, Faculty of Science, Federal University Dutse, PMB 7651, Jigawa, Nigeria
| | | | - Nor Asrina Sairi
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Muzafar Zulkifli
- Section of Polymer Engineering Technology, Universiti Kuala Lumpur, Branch Campus Malaysian Institute of Chemical and Bioengineering Technology (UniKL MICET), Lot 1988, Taboh Naning, 78000 Alor Gajah, Malacca, Malaysia
- Green Chemistry and Sustainable Engineering Technology Cluster, Universiti Kuala Lumpur, Branch Campus Malaysian Institute of Chemical and Bioengineering Technology (UniKL MICET), Lot 1988, Taboh Naning, 78000 Alor Gajah, Malacca, Malaysia
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11
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Xiang L, Song Y, Qiu M, Su Y. Synthesis of Branched Poly(butyl acrylate) Using the Strathclyde Method in Continuous-Flow Microreactors. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03906] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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12
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Nanoporous polymer networks of N − vinylpyrrolidone with dimethacrylates of various polarity. Synthesis, structure, and properties. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1817-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Yong H, Miao Y, A S, Quan D, Ivankovic A, Singh K, Zhang J, Zhou D, Wang W. Branched polystyrenes from suspension “Strathclyde” polymerization using a vulcanization accelerator as a chain transfer agent. Polym Chem 2019. [DOI: 10.1039/c8py01639a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Branched polymers exhibit a unique three-dimensional (3D) molecular architecture and distinctive physical/chemical properties, and thus have been applied in a wide variety of fields.
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Affiliation(s)
- Haiyang Yong
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300350
- China
- The Charles Institute of Dermatology
| | - Yongpeng Miao
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300350
- China
- The Charles Institute of Dermatology
| | - Sigen A
- The Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin 4
- Ireland
| | - Dong Quan
- School of Mechanical & Materials Engineering
- University College Dublin
- Dublin 4
- Ireland
| | - Alojz Ivankovic
- School of Mechanical & Materials Engineering
- University College Dublin
- Dublin 4
- Ireland
| | - Krutika Singh
- The Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin 4
- Ireland
| | - Jing Zhang
- The Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin 4
- Ireland
| | - Dezhong Zhou
- The Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin 4
- Ireland
| | - Wenxin Wang
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300350
- China
- The Charles Institute of Dermatology
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14
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Habibu S, Sarih NM, Mainal A. Synthesis and characterisation of highly branched polyisoprene: exploiting the "Strathclyde route" in anionic polymerisation. RSC Adv 2018; 8:11684-11692. [PMID: 35542803 PMCID: PMC9079075 DOI: 10.1039/c8ra00884a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 03/19/2018] [Indexed: 11/26/2022] Open
Abstract
This work aimed at developing a synthetic route towards highly branched poly(isoprene) from commercially available raw materials, in good yield and devoid of microgelation, i.e., to prepare a completely soluble polymer via the versatile technique anionic polymerisation. The polymerisations were conducted under high vacuum conditions using sec-butyllithium as initiator at 50 °C in toluene. Toluene served both as a solvent and as a chain-transfer agent. The polar modifier used was tetramethylethylenediamine (TMEDA), and a commercial mixture of divinylbenzene (DVB) was employed as the branching agent for the "living" poly(isoprenyl)lithium anions. The nature of the reaction was studied on the TMEDA/Li ratio as well as the DVB/Li ratio. The obtained branched polymers were characterised by triple detection size exclusion chromatography (SEC), proton nuclear magnetic resonance spectroscopy (1H NMR), differential scanning calorimetry (DSC) and melt rheology. Broad molecular weight distributions have been obtained for the highly branched polymer products. 1H NMR spectroscopy reveals the dominance of 3,4-polyisoprene microstructure. It was found that the complex viscosities and dynamic moduli of the branched samples were much lower compared to their linear counterparts. The results conform with earlier findings by the "Strathclyde team" for radical polymerisation systems. This methodology has the potential of providing soluble branched vinyl polymers at low cost using the readily available raw materials.
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Affiliation(s)
- Shehu Habibu
- Polymer Research Laboratory, Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
- Department of Chemistry, Faculty of Science, Federal University Dutse PMB 7651 Jigawa State Nigeria
| | - Norazilawati Muhamad Sarih
- Polymer Research Laboratory, Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Azizah Mainal
- Polymer Research Laboratory, Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
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15
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Zheng L, Wang Y, Zhang X, Ma L, Wang B, Ji X, Wei H. Fabrication of Hyperbranched Block-Statistical Copolymer-Based Prodrug with Dual Sensitivities for Controlled Release. Bioconjug Chem 2017; 29:190-202. [DOI: 10.1021/acs.bioconjchem.7b00699] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Luping Zheng
- State
Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, and College
of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Yunfei Wang
- State
Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, and College
of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xianshuo Zhang
- State
Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, and College
of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Liwei Ma
- State
Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, and College
of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Baoyan Wang
- State
Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, and College
of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xiangling Ji
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Hua Wei
- State
Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, and College
of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
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16
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Huang W, Gu W, Yang H, Xue X, Jiang B, Zhang D, Fang J, Chen J, Yang Y, Guo J. Preparation and Properties of Branched Polystyrene through Radical Suspension Polymerization. Polymers (Basel) 2017; 9:E14. [PMID: 30970692 PMCID: PMC6432501 DOI: 10.3390/polym9010014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 12/21/2016] [Accepted: 12/28/2016] [Indexed: 11/17/2022] Open
Abstract
Radical solvent-free suspension polymerization of styrene with 3-mercapto hexyl-methacrylate (MHM) as the branching monomer has been carried out using 2,2'-azobisisobutyronitrile (AIBN) as the initiator to prepare branched polymer beads of high purity. The molecular weight and branching structure of the polymers have been characterized by triple detection size exclusion chromatography (TD-SEC), proton nuclear magnetic resonance spectroscopy (¹H-NMR), and Fourier transform infrared spectroscopy (FTIR). The glass transition temperature and rheological properties have been measured by using differential scanning calorimetry (DSC) and rotational rheometry. At mole ratios of MHM to AIBN less than 1.0, gelation was successfully avoided and branched polystyrene beads were prepared in the absence of any solvent. Branched polystyrene has a relatively higher molecular weight and narrower polydispersity (Mw.MALLS = 1,036,000 g·mol-1, Mw/Mn = 7.76) than those obtained in solution polymerization. Compared with their linear analogues, lower glass transition temperature and decreased chain entanglement were observed in the presently obtained branched polystyrene because of the effects of branching.
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Affiliation(s)
- Wenyan Huang
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Weikai Gu
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Hongjun Yang
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Xiaoqiang Xue
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Bibiao Jiang
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Dongliang Zhang
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Jianbo Fang
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Jianhai Chen
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Yang Yang
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Jinlong Guo
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
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17
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Das T, Sengupta S, Dey A, Pal A, Saha S, Bandyopadhyay A. Exploration of carboxymethyl guargum grafted hyperbranched poly(acrylic acid) as a scaffold for silver nanoparticles for ultrafast and selective sensing of Hg(ii). NEW J CHEM 2017. [DOI: 10.1039/c7nj03237d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A sensor for Hg2+ was developed from a system of silver nanoparticles stabilized by polysaccharide grafted hyperbranched poly(acrylic acid).
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Affiliation(s)
- Tamalika Das
- Department of Polymer Science & Technology, University of Calcutta
- Kolkata-700009
- India
| | - Srijoni Sengupta
- Department of Polymer Science & Technology, University of Calcutta
- Kolkata-700009
- India
| | - Ayan Dey
- Department of Polymer Science & Technology, University of Calcutta
- Kolkata-700009
- India
| | - Abhijit Pal
- Department of Polymer Science & Technology, University of Calcutta
- Kolkata-700009
- India
| | - Suparna Saha
- Department of Polymer Science & Technology, University of Calcutta
- Kolkata-700009
- India
| | - Abhijit Bandyopadhyay
- Department of Polymer Science & Technology, University of Calcutta
- Kolkata-700009
- India
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18
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Yang H, Wang Z, Zheng Y, Huang W, Xue X, Jiang B. Synthesis of highly branched polymers by reversible complexation-mediated copolymerization of vinyl and divinyl monomers. Polym Chem 2017. [DOI: 10.1039/c7py00174f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here, we report the reversible complexation-mediated copolymerization (RCMcP) of vinyl and divinyl monomers for the synthesis of highly branched polymers.
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Affiliation(s)
- Hongjun Yang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou
| | - Zhongrui Wang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou
| | - Yulei Zheng
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou
| | - Wenyan Huang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou
| | - Xiaoqiang Xue
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou
| | - Bibiao Jiang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou
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19
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Jiang Q, Li J, Huang W, Zhang D, Chen J, Yang H, Xue X, Jiang B. Radical polymerization in the presence of a peroxide monomer: an approach to branched vinyl polymers. Polym Chem 2017. [DOI: 10.1039/c7py00844a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we report radical polymerization in the presence of a peroxide monomer for the preparation of branched vinyl polymers.
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Affiliation(s)
- Qimin Jiang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou 213164
| | - Jiating Li
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou 213164
| | - Wenyan Huang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou 213164
| | - Dongliang Zhang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou 213164
| | - Jianhai Chen
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou 213164
| | - Hongjun Yang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou 213164
| | - Xiaoqiang Xue
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou 213164
| | - Bibiao Jiang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials
- School of Materials Science and Engineering
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering
- Changzhou University
- Changzhou 213164
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20
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Gao Y, Newland B, Zhou D, Matyjaszewski K, Wang W. Controlled Polymerization of Multivinyl Monomers: Formation of Cyclized/Knotted Single-Chain Polymer Architectures. Angew Chem Int Ed Engl 2016; 56:450-460. [DOI: 10.1002/anie.201608786] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Yongsheng Gao
- School of Materials Science and Engineering; Tianjin University; Tianjin 300072 China
- Charles Institute of Dermatology, School of Medicine; University College Dublin; Dublin Ireland
| | - Ben Newland
- Leibniz-Institut für Polymerforschung; Dresden Germany
- Brain Repair Group; Cardiff University; Cardiff UK
| | - Dezhong Zhou
- School of Materials Science and Engineering; Tianjin University; Tianjin 300072 China
- Charles Institute of Dermatology, School of Medicine; University College Dublin; Dublin Ireland
| | - Krzysztof Matyjaszewski
- Center for Macromolecular Engineering, Department of Chemistry; Carnegie Mellon University; Pittsburgh PA 15213 USA
| | - Wenxin Wang
- School of Materials Science and Engineering; Tianjin University; Tianjin 300072 China
- Charles Institute of Dermatology, School of Medicine; University College Dublin; Dublin Ireland
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21
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Gao Y, Newland B, Zhou D, Matyjaszewski K, Wang W. Kontrollierte Polymerisation von Multivinyl-Monomeren: Bildung einer cyclischen/verknoteten Einzelketten-Polymerarchitektur. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608786] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yongsheng Gao
- School of Materials Science and Engineering; Tianjin University; Tianjin 300072 China
- Charles Institute of Dermatology, School of Medicine; University College Dublin; Dublin Irland
| | - Ben Newland
- Leibniz-Institut für Polymerforschung; Dresden Deutschland
- Brain Repair Group; Cardiff University; Cardiff Großbritannien
| | - Dezhong Zhou
- School of Materials Science and Engineering; Tianjin University; Tianjin 300072 China
- Charles Institute of Dermatology, School of Medicine; University College Dublin; Dublin Irland
| | - Krzysztof Matyjaszewski
- Center for Macromolecular Engineering, Department of Chemistry; Carnegie Mellon University; Pittsburgh PA 15213 USA
| | - Wenxin Wang
- School of Materials Science and Engineering; Tianjin University; Tianjin 300072 China
- Charles Institute of Dermatology, School of Medicine; University College Dublin; Dublin Irland
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22
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The Synthesis of Backbone Thermo and pH Responsive Hyperbranched Poly(Bis(N,N-Propyl Acryl Amide))s by RAFT. Polymers (Basel) 2016; 8:polym8040135. [PMID: 30979223 PMCID: PMC6432253 DOI: 10.3390/polym8040135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 03/28/2016] [Accepted: 04/05/2016] [Indexed: 11/18/2022] Open
Abstract
Hyperbranched poly(methylene-bis-acrylamide), poly(bis(N,N-propyl acryl amide)) (HPNPAM) and poly(bis(N,N-butyl acryl amide)) were synthesized by reversible addition-fragmentation chain transfer polymerization. HPNPAMs showed lower critical solution temperature (LCST) due to an appropriate ratio between hydrophilic and hydrophobic groups. The effects of reaction conditions on polymerization were investigated in detail. The structure of HPNPAM was characterized by 1H NMR, FT-IR, Muti detector-size exclusion chromatography (MDSEC) and Ultravioletvisble (UV-Vis). The α value reached 0.20 and DB was 90%, indicating HPNPAMs with compact topology structure were successfully prepared. LCSTs were tuned by Mw and the pH value of the solution. The change of molecular size was assayed by dynamic light scattering and scanning electron microscope. These results indicated that the stable uniform nanomicelles were destroyed and macromolecules aggregated together, forming large particles as temperature exceeded LCST. In addition, after the cells were incubated for 24 h, the cell viability reached 80%, which confirmed this new dual responsive HPNPAM had low cytotoxicity.
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23
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Gao Y, Zhou D, Zhao T, Wei X, McMahon S, O’Keeffe Ahern J, Wang W, Greiser U, Rodriguez BJ, Wang W. Intramolecular Cyclization Dominating Homopolymerization of Multivinyl Monomers toward Single-Chain Cyclized/Knotted Polymeric Nanoparticles. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01549] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | | | | | | | | | | | - Wei Wang
- School
of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
| | | | | | - Wenxin Wang
- School
of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
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24
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Zhao T, Zhang H, Zhou D, Gao Y, Dong Y, Greiser U, Tai H, Wang W. Water soluble hyperbranched polymers from controlled radical homopolymerization of PEG diacrylate. RSC Adv 2015. [DOI: 10.1039/c5ra01253h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hyperbranched PEG-based polymers were synthesized through homopolymerization of PEG diacrylate via enhanced intermolecular branching and showed a concentration-dependent thermoresponsive property.
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Affiliation(s)
- Tianyu Zhao
- Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin
- Ireland
| | - Hong Zhang
- Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin
- Ireland
| | - Dezhong Zhou
- Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin
- Ireland
| | - Yongsheng Gao
- Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin
- Ireland
| | - Yixiao Dong
- School of Medicine
- Stanford University
- Stanford
- USA
| | - Udo Greiser
- Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin
- Ireland
| | - Hongyun Tai
- School of Chemistry
- Bangor University
- Bangor
- UK
| | - Wenxin Wang
- Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin
- Ireland
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25
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26
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Nguyen NT, Thurecht KJ, Howdle SM, Irvine DJ. Facile one-spot synthesis of highly branched polycaprolactone. Polym Chem 2014. [DOI: 10.1039/c3py01725g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
First solvent-free synthesis of degradable/bioresorbable, highly branched polymers via Sn(Oct)2 controlled ROP containing di-functional lactones to near quantitative conversion.
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Affiliation(s)
- Nam T. Nguyen
- School of Chemistry
- Department of Chemical and Environmental Engineering
- University of Nottingham
- Nottingham
- UK
| | - Kristofer J. Thurecht
- Australian Institute for Bioengineering and Nanotechnology and Centre for Advanced Imaging
- The University of Queensland
- St Lucia
- Australia
| | - Steve M. Howdle
- School of Chemistry
- Department of Chemical and Environmental Engineering
- University of Nottingham
- Nottingham
- UK
| | - Derek J. Irvine
- School of Chemistry
- Department of Chemical and Environmental Engineering
- University of Nottingham
- Nottingham
- UK
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27
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Willcock H, Lu A, Hansell CF, Chapman E, Collins IR, O'Reilly RK. One-pot synthesis of responsive sulfobetaine nanoparticles by RAFT polymerisation: the effect of branching on the UCST cloud point. Polym Chem 2014. [DOI: 10.1039/c3py00998j] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Jiang Q, Huang W, Yang H, Xue X, Jiang B, Zhang D, Fang J, Chen J, Yang Y, Zhai G, Kong L, Guo J. Radical emulsion polymerization with chain transfer monomer: an approach to branched vinyl polymers with high molecular weight and relatively narrow polydispersity. Polym Chem 2014. [DOI: 10.1039/c3py01437a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Sun H, Kabb CP, Sumerlin BS. Thermally-labile segmented hyperbranched copolymers: using reversible-covalent chemistry to investigate the mechanism of self-condensing vinyl copolymerization. Chem Sci 2014. [DOI: 10.1039/c4sc02290d] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A thermally-reversible inimer was used to confirm the controlled growth of individual branches during self-condensing vinyl atom transfer radical polymerization (ATRP).
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Affiliation(s)
- Hao Sun
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville, USA
| | - Christopher P. Kabb
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville, USA
| | - Brent S. Sumerlin
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville, USA
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30
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Smeets NM. Amphiphilic hyperbranched polymers from the copolymerization of a vinyl and divinyl monomer: The potential of catalytic chain transfer polymerization. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2013.05.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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31
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Bai LB, Zheng RR, Li WL, Wu YG, Ba XW, Wang HJ. A synthetic approach for water soluble hyperbranched poly(N,N-ethylidenebis(N-2-chloroacetyl acrylamide)) with high degree of branching via atom transfer radical polymerization/self-condensing vinyl polymerization. CHINESE JOURNAL OF POLYMER SCIENCE 2013. [DOI: 10.1007/s10118-013-1257-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Molecular oxygen as a regulator of primary chain length of branched polymers formed in 3D radical polymerization. Oxidative polymerization of styrene. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.11.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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33
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Liu M, Tan BH, Burford RP, Lowe AB. Nucleophilic thiol-Michael chemistry and hyperbranched (co)polymers: synthesis and ring-opening metathesis (co)polymerization of novel difunctional exo-7-oxanorbornenes with in situ inimer formation. Polym Chem 2013. [DOI: 10.1039/c3py00110e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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34
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Kurochkin SA, Silant’ev MA, Perepelitsina EO, Berezin MP, Baturina AA, Grachev VP, Korolev GV. Synthesis of highly branched polymers via three-dimensional radical polymerization in the presence of oxygen. POLYMER SCIENCE SERIES B 2012. [DOI: 10.1134/s1560090412040021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Rikkou-Kalourkoti M, Matyjaszewski K, Patrickios CS. Synthesis, Characterization and Thermolysis of Hyperbranched Homo- and Amphiphilic Co-Polymers Prepared Using an Inimer Bearing a Thermolyzable Acylal Group. Macromolecules 2012. [DOI: 10.1021/ma202021y] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh,
Pennsylvania 15213, United States
| | - Costas S. Patrickios
- Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia,
Cyprus
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36
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Zheng Y, Thurecht KJ, Wang W. Polysiloxanes polymers with hyperbranched structure and multivinyl functionality. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.25072] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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Yang Z, Li D, Pan C, Wang Y. Effects of hyperbranched prepolymers prepared from butyl acrylate and butyl methacrylate on the electro-optical properties of polymer dispersed liquid crystal. POLYM ADVAN TECHNOL 2011. [DOI: 10.1002/pat.2046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhigang Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering; Sichuan University; Chengdu 610065 China
| | - Ding Li
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering; Sichuan University; Chengdu 610065 China
| | - Cuihong Pan
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering; Sichuan University; Chengdu 610065 China
| | - Yinghan Wang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering; Sichuan University; Chengdu 610065 China
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38
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Smeets NMB, Freeman MW, McKenna TFL. Polymer Architecture Control in Emulsion Polymerization via Catalytic Chain Transfer Polymerization. Macromolecules 2011. [DOI: 10.1021/ma201393b] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Niels M. B. Smeets
- Department of Chemical Engineering, Queen’s University, Kingston, Ontario, Canada K7L 3N6
| | - Michael W. Freeman
- Department of Chemical Engineering, Queen’s University, Kingston, Ontario, Canada K7L 3N6
| | - Timothy F. L. McKenna
- Department of Chemical Engineering, Queen’s University, Kingston, Ontario, Canada K7L 3N6
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39
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Controlled synthesis of branched polystyrene via free radical polymerization of novel chain transfer monomer. Macromol Res 2011. [DOI: 10.1007/s13233-011-0809-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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40
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Li C, Jiang H, Cao L, Wang Y. Branched and Self-Crosslinkable Poly(methyl methacrylate)s Prepared via One-Pot Synthesis in Aqueous Emulsion. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2011. [DOI: 10.1080/10601325.2011.552361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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Li C, Jiang H, Wang Y, Wang Y. Hyperbranched poly(methyl methacrylate)s prepared by miniemulsion polymerization and their (non)-Newtonian flow behaviors. POLYMER 2011. [DOI: 10.1016/j.polymer.2010.11.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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42
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Rosselgong J, Armes SP, Barton WRS, Price D. Synthesis of Branched Methacrylic Copolymers: Comparison between RAFT and ATRP and Effect of Varying the Monomer Concentration. Macromolecules 2010. [DOI: 10.1021/ma902757z] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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Tai H, Wang W, Vermonden T, Heath F, Hennink WE, Alexander C, Shakesheff KM, Howdle SM. Thermoresponsive and photocrosslinkable PEGMEMA-PPGMA-EGDMA copolymers from a one-step ATRP synthesis. Biomacromolecules 2010; 10:822-8. [PMID: 19226106 DOI: 10.1021/bm801308q] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thermoresponsive and photocrosslinkable polymers can be used as injectable scaffolds in tissue engineering to yield gels in situ with enhanced mechanical properties and stability. They allow easy handling and hold their shapes prior to photopolymerization for clinical practice. Here we report a novel copolymer with both thermoresponsive and photocrosslinkable properties via a facile one-step deactivation enhanced atom transfer radical polymerization (ATRP) using poly(ethylene glycol) methyl ether methylacrylate (PEGMEMA, M(n) = 475) and poly(propylene glycol) methacrylate (PPGMA, M(n) = 375) as monofunctional vinyl monomers and up to 30% of ethylene glycol dimethacrylate (EGDMA) as multifunctional vinyl monomer. The resultant PEGMEMA-PPGMA-EGDMA copolymers have been characterized by gel permeation chromatography (GPC) and 1H NMR analysis, which demonstrate their multivinyl functionality and hyperbranched structures. These water-soluble copolymers show lower critical solution temperature (LCST) behavior at 32 degrees C, which is comparable to poly(N-isopropylacrylamide) (PNIPAM). The copolymers can also be cross-linked by photopolymerization through their multivinyl functional groups. Rheological studies clearly demonstrate that the photocrosslinked gels formed at a temperature above the LCST have higher storage moduli than those prepared at a temperature below the LCST. Moreover, the cross-linking density of the gels can be tuned to tailor their porous structures and mechanical properties by adjusting the composition and concentration of the copolymers. Hydrogels with a broad range of storage moduli from 10 to 400 kPa have been produced.
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Affiliation(s)
- Hongyun Tai
- School of Chemistry, The University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom.
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44
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45
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Poly J, Wilson D, Destarac M, Taton D. A comprehensive investigation into “controlled/living” chain growth crosslinking copolymerization including a back to basics modeling. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23580] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Liu XH, Zhang GB, Li BX, Bai YG. A novel strategy to branched polyacrylonitrile via one-pot RAFT copolymerization of acrylonitrile and an asymmetrical divinyl monomer. J Appl Polym Sci 2009. [DOI: 10.1002/app.30599] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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47
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Kritskaya DA, Kurmaz SV. A model of the formation of branched polymethyl methacrylates. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2009. [DOI: 10.1134/s1990793109050212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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48
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Chisholm M, Hudson N, Kirtley N, Vilela F, Sherrington DC. Application of the “Strathclyde Route” to Branched Vinyl Polymers in Suspension Polymerization: Architectural, Thermal, and Rheological Characterization of the Derived Branched Products. Macromolecules 2009. [DOI: 10.1021/ma901081v] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael Chisholm
- Lucite International, Wilton Center, Wilton TS10 4RF Redcar, England, U.K
| | - Nicholas Hudson
- Westchem Graduate School of Chemistry, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland, U.K
| | - Neil Kirtley
- Lucite International, Wilton Center, Wilton TS10 4RF Redcar, England, U.K
| | - Filipe Vilela
- Westchem Graduate School of Chemistry, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland, U.K
| | - David C. Sherrington
- Westchem Graduate School of Chemistry, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland, U.K
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49
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CHEN Z, WANG X, ZOU Y, YANG Y, RAN R. SYNTHESIS OF BRANCHED POLYMETHYL METHACRYLATE <I>VIA</I> REVERSIBLEADDITION-FRAGMENTATION CHAIN TRANSFER DISPERSION POLYMERIZATION. ACTA POLYM SIN 2009. [DOI: 10.3724/sp.j.1105.2009.00451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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50
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Irzhak VI. A structural characteristic of hyperbranched polymers. POLYMER SCIENCE SERIES B 2009. [DOI: 10.1134/s1560090409030117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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