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Song L, Chi W, Zhang Q, Ren J, Yang B, Cong F, Li Y, Wang W, Li X, Wang Y. High-performance and functional fully bio-based polylactic acid/polypropylene carbonate blends by in situ multistep reaction-induced interfacial control. Int J Biol Macromol 2024; 258:128799. [PMID: 38110165 DOI: 10.1016/j.ijbiomac.2023.128799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/10/2023] [Accepted: 12/12/2023] [Indexed: 12/20/2023]
Abstract
Using a solvent-free radical grafting technique, glycidyl methacrylate (GMA) and maleic anhydride (MAH) were used as functionalized graft monomers, styrene (St) as a copolymer monomer, and grafted onto polylactic acid (PLA). A series of PLA-g-(GMA/MAH-co-St) graft copolymers were prepared by adjusting the GMA/MAH ratio. Subsequently, the prepared graft copolymers were used as a compatibilizer with PLA and polypropylene carbonate (PPC) for melt blending to prepare PLA/PPC/PLA-g-(GMA/MAH-co-St) blends. The effects of changes in the GMA/MAH ratio in the graft copolymer on the thermodynamics, rheology, optics, degradation performance, mechanical properties, and microstructure of the blend were studied. The results found that GMA, MAH, and St were successfully grafted onto PLA, and the PLA-g-(GMA/MAH-co-St) graft copolymer obtained from the reaction had a good toughening effect on the PLA/PPC blend system, which significantly improved the mechanical properties of the PLA/PPC/PLA-g-(GMA/MAH-co-St) blend without reducing its degradation performance, resulting in a biodegradable blend material with excellent comprehensive performance. In the PLA-g-(GMA/MAH-co-St) grafting reaction system, when GMA/MAH = 1.5/1.5 (w/w), the grafting degree of the graft copolymer increased most significantly, from 0.83 phr to 1.51 phr. This composition of graft copolymer can effectively improve the compatibility between PLA and PPC. The resulting PLA/PPC blend can maintain good melt flow properties (MFR of 14.51 g/10 min), high transparency, and low haze (light transmittance of 91.56 %, haze of 20.5 %), while significantly improving its thermal stability (T95%, Tmax, and Et increased by 12.87 °C, 20.33 °C, and 32.00 kJ/mol, respectively). Moreover, when introducing PLA-g-(GMA/MAH-co-St) (GMA/MAH = 1.5/1.5 (wt/wt)) graft copolymer into the system, the toughness of the PLA/PPC/PLA-g-(GMA/MAH-co-St) blend system is optimal, with the notch impact strength and fracture elongation increasing to 184.6 % and 535.4 % of the PLA/PPC blend, respectively, at which point the fracture surface of the impact sample shows a wrinkled fracture feature indicative of toughness.
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Affiliation(s)
- Lixin Song
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China; College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
| | - Weihan Chi
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China; College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Qian Zhang
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China
| | - Jiannan Ren
- AVIC Shenyang Aircraft Corporation, Shenyang 110850, China
| | - Bing Yang
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China; College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Fei Cong
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China; College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Yongchao Li
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China; College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Wei Wang
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China; BatteroTech Corporation Limited, Shanghai 201417, China
| | - Xianliang Li
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China; College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Yuanxia Wang
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China; College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
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Muslimova IB, Zhatkanbayeva ZK, Omertasov DD, Melnikova GB, Yeszhanov AB, Güven O, Chizhik SA, Zdorovets MV, Korolkov IV. Stimuli-Responsive Track-Etched Membranes for Separation of Water-Oil Emulsions. MEMBRANES 2023; 13:membranes13050523. [PMID: 37233585 DOI: 10.3390/membranes13050523] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/10/2023] [Accepted: 05/12/2023] [Indexed: 05/27/2023]
Abstract
In this work, we have developed a method for the preparation of pH-responsive track-etched membranes (TeMs) based on poly(ethylene terephthalate) (PET) with pore diameters of 2.0 ± 0.1 μm of cylindrical shape by RAFT block copolymerization of styrene (ST) and 4-vinylpyridine (4-VP) to be used in the separation of water-oil emulsions. The influence of the monomer concentration (1-4 vol%), the molar ratio of RAFT agent: initiator (1:2-1:100) and the grafting time (30-120 min) on the contact angle (CA) was studied. The optimal conditions for ST and 4-VP grafting were found. The obtained membranes showed pH-responsive properties: at pH 7-9, the membrane was hydrophobic with a CA of 95°; at pH 2, the CA decreased to 52°, which was due to the protonated grafted layer of poly-4-vinylpyridine (P4VP), which had an isoelectric point of pI = 3.2. The obtained membranes with controlled hydrophobic-hydrophilic properties were tested by separating the direct and reverse "oil-water" emulsions. The stability of the hydrophobic membrane was studied for 8 cycles. The degree of purification was in the range of 95-100%.
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Affiliation(s)
- Indira B Muslimova
- Laboratory of Engineering Profile, L.N. Gumilyov Eurasian National University, Satpaev Str., 5, Astana 010008, Kazakhstan
- The Institute of Nuclear Physics, Ibragimov Str., 1, Almaty 050032, Kazakhstan
| | - Zh K Zhatkanbayeva
- Laboratory of Engineering Profile, L.N. Gumilyov Eurasian National University, Satpaev Str., 5, Astana 010008, Kazakhstan
| | - Dias D Omertasov
- Laboratory of Engineering Profile, L.N. Gumilyov Eurasian National University, Satpaev Str., 5, Astana 010008, Kazakhstan
| | - Galina B Melnikova
- Laboratory of Engineering Profile, L.N. Gumilyov Eurasian National University, Satpaev Str., 5, Astana 010008, Kazakhstan
- A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, P. Brovki Str., 15, 220072 Minsk, Belarus
| | - Arman B Yeszhanov
- Laboratory of Engineering Profile, L.N. Gumilyov Eurasian National University, Satpaev Str., 5, Astana 010008, Kazakhstan
- The Institute of Nuclear Physics, Ibragimov Str., 1, Almaty 050032, Kazakhstan
| | - Olgun Güven
- Department of Chemistry, Hacettepe University, Beytepe, Ankara 06800, Turkey
| | - Sergei A Chizhik
- A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, P. Brovki Str., 15, 220072 Minsk, Belarus
| | - Maxim V Zdorovets
- Laboratory of Engineering Profile, L.N. Gumilyov Eurasian National University, Satpaev Str., 5, Astana 010008, Kazakhstan
- The Institute of Nuclear Physics, Ibragimov Str., 1, Almaty 050032, Kazakhstan
- Department of Intelligent Information Technology, Ural Federal University, Mira Str. 19, 620002 Ekaterinburg, Russia
| | - Ilya V Korolkov
- Laboratory of Engineering Profile, L.N. Gumilyov Eurasian National University, Satpaev Str., 5, Astana 010008, Kazakhstan
- The Institute of Nuclear Physics, Ibragimov Str., 1, Almaty 050032, Kazakhstan
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Belousov GK, Vaitusionak AA, Vasilenko IV, Ghasemi M, Andruleviciene V, Ivanchanka A, Volyniuk D, Kim H, Grazulevicius JV, Kostjuk SV. Through-Space Charge-Transfer Thermally Activated Delayed Fluorescence Alternating Donor–Acceptor Copolymers for Nondoped Solution-Processable OLEDs. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Influence of RAFT Agent on the Mechanism of Copolymerization of Polypropylene Glycol Maleinate with Acrylic Acid. Polymers (Basel) 2022; 14:polym14091884. [PMID: 35567053 PMCID: PMC9101380 DOI: 10.3390/polym14091884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/20/2022] [Accepted: 04/24/2022] [Indexed: 11/21/2022] Open
Abstract
Studies have shown the possibility of synthesizing new polymers based on polypropylene glycol maleate with acrylic acid in the presence of a RAFT agent (2-Cyano-2-propyl dodecyl trithiocarbonate CPDT). The effect of RAFT agent concentration on network density has been shown to be connected with product yield. Herein, the composition of the obtained copolymers was determined using FTIR spectrometry in combination with the chemometric method of partial least squares (or projection to latent structures). To investigate the synthesized hydrogels, the degrees of equilibrium swelling was studied. The resulting objects were characterized by infrared spectroscopy. The surface morphology of the polymers was studied and the pore sizes were estimated using scanning electron microscopy. The structure of the test samples was confirmed by NMR spectroscopy. The thermal stability of crosslinked polymers was determined using thermogravimetry.
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Neville GM, Edler KJ, Price GJ. Fluorescent styrene maleic acid copolymers to facilitate membrane protein studies in lipid nanodiscs. NANOSCALE 2022; 14:5689-5693. [PMID: 35315461 DOI: 10.1039/d1nr07230g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Fluorescently-labelled variants of poly(styrene-co-maleic acid), SMA, have been synthesised by RAFT copolymerisation. We show that low ratios of vinyl fluorophores, analogous to styrene, can be successfully incorporated during polymerisation without detriment to nanodisc formation upon interaction with lipids. These novel copolymers are capable of encapuslating lipids and the model membrane protein, gramicidin, and hence have the potential to be applied in fluorescence-based biological studies. To demonstrate this, energy transfer is used to probe polymer-protein interactions in nanodiscs. The copolymers may also be used to monitor nanodisc self assembly by exploiting aggregation-caused-quenching (ACQ).
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Affiliation(s)
| | - Karen J Edler
- Department of Chemistry, University of Bath, Bath, BA2 7AY, UK
| | - Gareth J Price
- Department of Chemistry, University of Bath, Bath, BA2 7AY, UK
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Migliore N, Van Kooten T, Ruggeri G, Picchioni F, Raffa P. Synthesis and solution properties of poly(p,α dimethylstyrene-co-maleic anhydride): The use of a monomer potentially obtained from renewable sources as a substitute of styrene in amphiphilic copolymers. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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