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Articles de revues sur le sujet « Amphiphilic graft copolymer »

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Auteur : Grafiati
Publié le 10 mars 2023

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1

Christova, Darinka, Maya Staneva, Sijka Ivanova, Mariela Alexandrova, Philip Ublekov, Maria Dencheva-Zarkova, Julia Genova, Irene Tsibranska et Bartosz Tylkowski. « Surface Modification of Polyethersulfon Nanofiltration Membrane for Improving Water-Ethanol Separation ». Journal of Physics : Conference Series 2436, no 1 (1 janvier 2023) : 012024. http://dx.doi.org/10.1088/1742-6596/2436/1/012024.

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Abstract This paper reports on the surface modification of a nanofiltration polyethersulfon membrane, Microdyn Nadir NP030P, aiming at improved water-ethanol separation. To achieve this, three types of poly(vinyl alcohol) copolymers of varied hydrophilic-lipophilic balance were synthesized and tested as modifiers: double hydrophilic graft copolymer with poly(N,N-dimethyl acrylamide) side chains, amphiphilic copolymer of partially acetalized PVA, as well as amphiphilic copolymer with grafted hydrophobic poly(methyl methacrylate) chains. Copolymers’ chemical structure, composition and properties were evaluated by conventional analytical techniques. Thin film deposition via spin-coating of copolymer solution was applied as a method for membrane modification. Alteration of the hydrophilic-lipophilic balance at the membrane surface was studied by contact angle measurements whereas the surface microstructure was characterized by attenuated total reflectance Fourier-transform infrared spectroscopy as well as optical and scanning electron microscopy. The feasibility of tailoring membrane surface to specific requirements by using PVA-based copolymer was assessed and the influence of copolymer structure and composition on the membrane properties was considered.
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Guo, Linlin, Ge Gao, Xiaoli Liu et Fengqi Liu. « Emulsion Polymerisation of St/BuA Stabilised with a PEG-containing Graft Copolymer ». Polymers and Polymer Composites 16, no 9 (novembre 2008) : 635–39. http://dx.doi.org/10.1177/096739110801600908.

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An amphiphilic graft copolymer comprising poly(ethylene oxide) (PEG) grafts was synthesised and characterised. It was used to stabilise the emulsion polymerisation of St or BuA. The effectiveness of this PEG-containing graft copolymer in stabilising St/BuA emulsion polymerisation was studied. Finally, stable dispersions of polystyrene microspheres were used as templates, and polystyrene microspheres were coated with Fe3O4 by in situ reaction of Fe3+ and Fe2+ in the presence of OH−. No additional treatments were needed in the process.
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3

Demina, Tatiana S., Maria G. Drozdova, Chantal Sevrin, Philippe Compère, Tatiana A. Akopova, Elena Markvicheva et Christian Grandfils. « Biodegradable Cell Microcarriers Based on Chitosan/Polyester Graft-Copolymers ». Molecules 25, no 8 (22 avril 2020) : 1949. http://dx.doi.org/10.3390/molecules25081949.

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Self-stabilizing biodegradable microcarriers were produced via an oil/water solvent evaporation technique using amphiphilic chitosan-g-polyester copolymers as a core material in oil phase without the addition of any emulsifier in aqueous phase. The total yield of the copolymer-based microparticles reached up to 79 wt. %, which is comparable to a yield achievable using traditional emulsifiers. The kinetics of microparticle self-stabilization, monitored during their process, were correlated to the migration of hydrophilic copolymer’s moieties to the oil/water interface. With a favorable surface/volume ratio and the presence of bioadhesive natural fragments anchored to their surface, the performance of these novel microcarriers has been highlighted by evaluating cell morphology and proliferation within a week of cell cultivation in vitro.
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Zhao, Fengfeng, Hui Quan, Shijun Zhang, Yihui Xu, Zheng Zhou, Guangxin Chen et Qifang Li. « Watered-Based Graphene Dispersion Stabilized by a Graft Co-Polymer for Electrically Conductive Screen Printing ». Polymers 15, no 2 (10 janvier 2023) : 356. http://dx.doi.org/10.3390/polym15020356.

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Graphene conductive inks have attracted significant attention in recent years due to their high conductivity, corrosion resistance, and environmentally friendly nature. However, the dispersion of graphene in aqueous solution is still challenging. In this work, we synthesized an amphiphilic graft copolymer, polyvinyl alcohol-g-polyaniline (PVA-g-PANI), and studied the graphene dispersion prepared with the graft copolymer by high-speed shear dispersion. The amphiphilic graft copolymer can be used as a stabilizer and adhesive agent in graphene dispersion. Given the steric hindrance of the graft copolymer, the stability of graphene dispersion is improved by decreasing the probability of π–π stacking. PVA-g-PANI has a better stability on graphene dispersion than carboxymethylcellulose sodium (CMC-Na) and a mixture of PVA and PANI. The graft copolymer has only a slight effect on the conductivity of graphene dispersion due to the existence of conductive PANI, which is beneficial for preparing the graphene dispersion with good conductivity and adhesion. Graphene dispersion is well-adapted to screen printing and is very stable with regard to the sheet resistance bending cycle.
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Yang, Yang, Lei Miao, Jiwen Hu, Guojun Liu, Yuanyuan Tu, Shudong Lin, Feng Liu et al. « Hydrophilization of polysulfone membranes using a binary graft copolymer ». J. Mater. Chem. A 2, no 27 (2014) : 10410–23. http://dx.doi.org/10.1039/c4ta01481b.

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Mo, Yangmiao, Shudong Lin, Yuanyuan Tu, Guojun Liu, Jiwen Hu, Feng Liu et Jun Song. « Unimolecular micelles from graft copolymer with binary side chains ». RSC Advances 6, no 64 (2016) : 58871–83. http://dx.doi.org/10.1039/c6ra10822a.

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7

Chern, Chorng-Shyan, Wen-Yih Chen, Hsin-Cheng Chiu, Fu-Hsiung Chang, Mimg-Hung Hsieh et Jia-Ren Tu. « Interactions between amphiphilic graft copolymer-intercalated liposomes ». Colloids and Surfaces A : Physicochemical and Engineering Aspects 277, no 1-3 (avril 2006) : 44–51. http://dx.doi.org/10.1016/j.colsurfa.2005.11.006.

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8

Zhou, Yong, et Zhi Guo Hu. « Synthesis of Chiral Amphiphilic Graft Copolymer PBTQMO-g-MPEO ». Advanced Materials Research 308-310 (août 2011) : 689–91. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.689.

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A new optically active amphiphilic graft copolymer bearing quinine pendants poly[3,3-bis(triazolyl-L-quinine) methyl oxetane]-g-poly(ethylene oxide) (PBTQMO-g-MPEO) was synthesized by ‘‘click’’ reaction of azido-modified PBAMO-g-MPEO diblock copolymer and 10,11-didehydro quinine. The fourier transform infrared spectrum(FTIR) and 1H nuclear magnetic resonance spectroscopy (1HNMR) were used to confirm its structure and composition.
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Das, Dipankar, Sudipta Mukherjee, Aniruddha Pal, Raghunath Das, Santi Gopal Sahu et Sagar Pal. « Synthesis and characterization of biodegradable copolymer derived from dextrin and poly(vinyl acetate) via atom transfer radical polymerization ». RSC Advances 6, no 11 (2016) : 9352–59. http://dx.doi.org/10.1039/c5ra22762c.

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Jiang, Weihua, Ju Wang, Lei Yang, Xuewei Jiang, Zhaoshi Bai, Zheran Wang, Yunpeng He et Dongkai Wang. « Nanostructured lipid carriers modified with PEGylated carboxymethylcellulose polymers for effective delivery of docetaxel ». RSC Advances 5, no 110 (2015) : 90386–95. http://dx.doi.org/10.1039/c5ra13642c.

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An amphiphilic carboxymethylcellulose-graft-histidine/methoxypolyethylene glycol (CMP) copolymer was firstly synthesized to modify nanostructured lipid carriers (NLCs) for effective delivery of docetaxel.
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Liang, HuaQing, QiHua Zhou, YongJiang Long, WanChu Wei, Shuo Feng, GuoDong Liang et FangMing Zhu. « Synthesis and self-assembly of a novel amphiphilic diblock copolymer consisting of isotactic polystyrene and 1,4-trans-polybutadiene-graft-poly(ethylene oxide) ». RSC Advances 8, no 23 (2018) : 12752–59. http://dx.doi.org/10.1039/c8ra01288a.

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Herein, a novel amphiphilic diblock copolymer consisting of isotactic polystyrene and 1,4-trans-polybutadiene-graft-poly(ethylene oxide) was synthesized and its self-assembly behavior was investigated.
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12

He, Xiaohua, Jianxiang Wu et Chunyan Gao. « Novel amphiphilic graft block azobenzene-containing copolymer with polypeptide block : synthesis, self-assembly and photo-responsive behavior ». RSC Advances 10, no 10 (2020) : 5747–57. http://dx.doi.org/10.1039/c9ra10351a.

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Li, Jingliang, et Kongshuang Zhao. « The chain conformation and relaxation dynamics of poly(acrylic acid)-graft-poly(ethylene oxide)-graft-dodecyl in water : effect of side-chains and distribution of counterions ». Physical Chemistry Chemical Physics 17, no 6 (2015) : 4175–83. http://dx.doi.org/10.1039/c4cp04530k.

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We present a study on the dielectric behavior of aqueous solution of an amphiphilic copolymer, poly(acrylic acid)-graft-poly(ethylene oxide)-graft-dodecyl (PAA-g-PEO-g-dodecyl), in the frequency range of 40 Hz to 110 MHz at varying concentrations and temperatures.
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14

Soleimani, Abdolrasoul, Aneta Borecki et Elizabeth R. Gillies. « Photodegradable poly(ester amide)s for indirect light-triggered release of paclitaxel ». Polym. Chem. 5, no 24 (2014) : 7062–71. http://dx.doi.org/10.1039/c4py00996g.

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A photodegradable poly(ester amide) was developed. An amphiphilic graft copolymer derivative with paclitaxel conjugated via ester linkages formed micelles that released paclitaxel in response to UV light.
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15

Myrzakhanov, M. M., El-Sayed Negim, Mohammad Nasir et K. M. Azzam. « Synthesis and application of nonionic graft copolymers P(mPEG-g-MMA) ». Kompleksnoe Ispolʹzovanie Mineralʹnogo syrʹâ/Complex Use of Mineral Resources/Mineraldik Shikisattardy Keshendi Paidalanu 1, no 324 (6 septembre 2022) : 64–70. http://dx.doi.org/10.31643/2023/6445.09.

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The goal of this research is to prepare novel amphiphilic graft copolymers (nonionic) based on hydrophilic poly (ethylene glycol) methyl ether (mPEG) and hydrophobic methyl methacrylate (MMA) at room temperature and pressure. To generate P(mPEG-g-MMA) grafts, poly (ethylene glycol) methyl ether (mPEG) was synthesized and grafted with varied ratios of methyl methacrylate (MMA) in the existence of benzoyl peroxide as an initiator utilizing a macro-free radical initiator procedure under the effect of heating in toluene. The research discussed in this paper looked at the possibility of using the synthesized graft copolymer P(mPEG-g-MMA) as a nonionic demulsifier in Petroleum Crude Oil Emulsions. The produced nonionic surfactants were assessed as water demulsifiers in oil emulsions that were noticeable at varying oil: water ratios at 60oC. According to the demulsifier chemical compositions as well as concentrations, the testing findings revealed that the dehydration rate of the prepared demulsifiers reached 100%. The optimal demulsifier dose was 300 ppm.
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16

Zhang, Dong Xia, Wen Hui Hu, Fang Ping Wang, Lin Ke Xue et Xin Zhen Du. « Synthesis of Poly(acrylamide-Methacrylate)-G-Octylphenyl Polyoxyethylene and its Micellar Behavior in Aqueous Solution ». Advanced Materials Research 239-242 (mai 2011) : 3337–41. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.3337.

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An amphiphilic graft copolymer with poly(acrylamide-methacrylate) as a main chain and octylphenyl polyoxyethylene as side chains (P(AM-MA)-g-C8PhEO10) was successfully synthesized via free radical copolymerization. The structure and the composition of the graft copolymer were characterized by FTIR, 1H-NMR and elemental analysis (EA) in detail. The absolute molecular weight of the copolymer is 1.304×106, as determined by static light scattering (SLS). The molar ratio of acrylamide monomer to the macromonomer is 33:1 in the copolymer and 53 C8PhEO10 branch chains attach to a P(AM-MA) backbone. The micellar behavior of P(AM-MA)-g-C8PhEO10 was preliminarily studied by means of surface tension measurements, transmission electron microscope (TEM) in aqueous solution. It was found that the stable spherical micelles with core-shell structure are formed and polymolecular micelles are larger and more compact than monomolecular micelles. In addition, the graft copolymer has favorable thermal stability.
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Lu, Guolin, Xiaojun Jiang, Yongjun Li, Xuliang Lv et Xiaoyu Huang. « Synthesis and self-assembly of PMBTFVB-g-PNIPAM fluorine-containing amphiphilic graft copolymer ». RSC Advances 5, no 91 (2015) : 74947–52. http://dx.doi.org/10.1039/c5ra14302k.

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This article reports the synthesis of an amphiphilic graft copolymer containing a perfluorocyclobutyl (PFCB) aryl ether-based backbone and poly(N-isopropylacrylamide) side chains by a combination of thermal step-growth cycloaddition polymerization and atom transfer radical polymerization (ATRP).
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18

Yong-Chun, Chen, Yi Chang-Feng, Xu Zu-Shun et Cheng Shi-Yuan. « Solution Property of Amphiphilic Graft Copolymer PSt-g-PEO ». Acta Physico-Chimica Sinica 17, no 05 (2001) : 471–76. http://dx.doi.org/10.3866/pku.whxb20010519.

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Courbaron Gilbert, Anne-Claude, Nour-Eddine El Bounia, Eve Péré, Laurent Billon et Christophe Derail. « Dispersion Improvement of Carbon Nanotubes in Epoxy Resin Using Amphiphilic Block Copolymers ». Advanced Materials Research 112 (mai 2010) : 29–36. http://dx.doi.org/10.4028/www.scientific.net/amr.112.29.

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Interface between Carbon NanoTubes (CNT) and epoxy matrix is admitted to play an important role in the dispersion quality and in the mechanical stress transfer. To improve the interfacial adhesion, we propose to chemically graft molecules onto CNT surface. To achieve this chemical modification, a controlled radical polymerization, named Nitroxide Mediated Polymerization NMP, is used to synthesize a diblock copolymer based on Acrylic Acid (PAA block) and Methyl MethAcrylate (PMMA block). In the present paper, this polymerization is performed “in situ”. The PAA block presents a good affinity with the CNT which enable grafting. The PMMA miscibility with epoxy is expected to give a good adhesion - between the CNT and the matrix - and to bring a better dispersion. In order to compare the chemical modification and the physical adsorption of the copolymers onto CNT dispersion, the same block copolymer was synthesized with and without CNT. The copolymer synthesis was controlled and characterized by different methods as NMR 1H (conversion and composition), SEC (molecular weight) and TGA (grafting density). We show that the better dispersion quality and better physical properties have been obtained with grafted CNT.
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Li, Feng Hong, Wen Jing Zhang, San Xi Li, Yan Ming Chen et Xin Rui Zhang. « Synthesis and Characterization of an Amphiphilic Nanoparticles Based on Chitosan Oligosaccharide-Grafted-Polycaprolactone ». Applied Mechanics and Materials 513-517 (février 2014) : 86–90. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.86.

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The amphiphilic chitosan oligosaccharides graft copolymer (PHCSO-g-PCL) was synthesized via ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) through an amino group protection route using phthaloyl chitosan oligosaccharide (PHCSO) as intermediate. The graft reaction was carried out in Pyridine at 120 °C with a chitosan oligosaccharide (CSO) initiator and a tin 2-ethylhexanoate (Sn (Oct)2) catalyst. The amphiphilic PHCSO-g-PCL nanoparticles were prepared through the self-assembled in DMF organic solvents. PHCSO-PCL copolymer was characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The physicochemical properties of the hydrophobized PHCSO-g-PCL nanoparticles were investigated by using dynamic light scattering (DLS). The results of DLS showed that the hydrodynamic diameters and particle size distribution with various concentrations of PHCSO-g-PCL nanoparticles were from 69.82 nm to 195.9 nm with a narrow polydispersity factor of 0.212 to 0.172.
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Kim, Dong Jun, Jin Kyu Kim, Jae Hun Lee, Hyung Hee Cho, Youn-Sang Bae et Jong Hak Kim. « Scalable and bendable organized mesoporous TiN films templated by using a dual-functional amphiphilic graft copolymer for solid supercapacitors ». Journal of Materials Chemistry A 4, no 32 (2016) : 12497–503. http://dx.doi.org/10.1039/c6ta03475f.

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An organized mesoporous (om-TiN) film prepared by the nitration of TiO2 templated by a graft copolymer. The solid supercapacitor based on a graft copolymer electrolyte shows a specific capacitance of 266.8 F g−1, the highest value reported for TiN-based electrodes.
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Lehtovaara, Benjamin C., Mohit S. Verma et Frank X. Gu. « Synthesis of curdlan-graft-poly(ethylene glycol) and formulation of doxorubicin-loaded core–shell nanoparticles ». Journal of Bioactive and Compatible Polymers 27, no 1 (janvier 2012) : 3–17. http://dx.doi.org/10.1177/0883911511432511.

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A new core–shell nanoparticle containing the chemotherapeutic drug doxorubicin was formulated via amphiphilic graft copolymer self-assembly using curdlan- graft-poly(ethylene glycol) (curdlan -g-PEG). The graft copolymer was synthesized through the dicyclohexylcarbodiimide ester linkage of carboxylated PEG to the hydroxyl groups of the curdlan backbone. The nanoparticles were 109.9 nm in size and encapsulated doxorubicin in high yield (4%–5% wt/wt). The nanoparticles also controlled the release of doxorubicin over 24 h with a release profile that followed a Fickian diffusion model. The biocompatibility of curdlan- g-PEG was confirmed by hemolysis assay. This is the first nanoparticle formulated using the hydrophobicity of curdlan for concealing the immunomodulatory potential of curdlan within the core.
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Hussein A. Abdul Hussein et Nidhal K. Maraie. « Highlights on polymeric micelles as versatile nanocarriers for drug transporting ». Al Mustansiriyah Journal of Pharmaceutical Sciences 21, no 2 (19 avril 2022) : 21–30. http://dx.doi.org/10.32947/ajps.v21i2.806.

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Polymeric micelles are nanoscale core-shell structures formed by amphiphilic (block or graft) copolymers, that can self-aggregate in an aqueous medium. PMs characterized by small size, spherical shape, lower critical micellar concentration, which gave higher stability for PMs over conventional surfactant micelles. The core/shell structure permits polymeric micelle to entrap poor soluble drugs and can improve their solubility and permeability. The preparation of PMs tends to be relatively easy as compared to other novel drug delivery systems. This review focus on the general properties, types, types of copolymer utilized, formation mechanism, preparation methods, characterization techniques, and the applications on PMs.
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Jie, Kecheng, Yujuan Zhou et Xiaofan Ji. « A pH-responsive amphiphilic supramolecular graft copolymer constructed by crown ether based molecular recognition ». Polymer Chemistry 6, no 2 (2015) : 218–22. http://dx.doi.org/10.1039/c4py01072h.

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Based on the bis(m-phenylene)-32-crown-10/paraquat molecular recognition motif in water, we have successfully prepared an amphiphilic supramolecular graft copolymer by the combination of modified hydrophilic poly(ethylene oxide) and hydrophobic polystyrene. It could self-assemble into pH-responsive bilayer vesicles in water.
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Liu, Keyong, Pengju Pan et Yongzhong Bao. « Synthesis, micellization, and thermally-induced macroscopic micelle aggregation of poly(vinyl chloride)-g-poly(N-isopropylacrylamide) amphiphilic copolymer ». RSC Advances 5, no 115 (2015) : 94582–90. http://dx.doi.org/10.1039/c5ra16726d.

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PVC-g-PNIPAM amphiphilic copolymers with controlled graft lengths and densities are synthesized, which form unique macroscopic aggregates with well-defined 3D shapes in dilute aqueous solution above the LCST.
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Lu, Guolin, Hao Liu, Haifeng Gao, Chun Feng, Yongjun Li et Xiaoyu Huang. « Construction of semi-fluorinated amphiphilic graft copolymer bearing a poly(2-methyl-1,4-bistrifluorovinyloxybenzene) backbone and poly(ethylene glycol) side chains via the grafting-onto strategy ». RSC Advances 5, no 50 (2015) : 39668–76. http://dx.doi.org/10.1039/c5ra02377g.

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Demina, Tatiana S., Anastasia S. Kuryanova, Nadejda A. Aksenova, Andrey G. Shubnyy, Tatiana N. Popyrina, Yaroslav V. Sokovikov, Elena V. Istranova, Pavel L. Ivanov, Peter S. Timashev et Tatiana A. Akopova. « Chitosan-g-oligo/polylactide copolymer non-woven fibrous mats containing protein : from solid-state synthesis to electrospinning ». RSC Advances 9, no 64 (2019) : 37652–59. http://dx.doi.org/10.1039/c9ra07667k.

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Amphiphilic chitosan-g-oligo/polylactide graft-copolymers were synthesized through solid-state reactive co-extrusion and used for fabrication of fibrous non-woven mats via the electrospinning technique using chloroform as a solvent.
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Liu, Hao, Sen Zhang, Chun Feng, Yongjun Li, Guolin Lu et Xiaoyu Huang. « Synthesis and self-assembly of a fluorine-containing amphiphilic graft copolymer bearing a perfluorocyclobutyl aryl ether-based backbone and poly(acrylic acid) side chains ». Polymer Chemistry 6, no 23 (2015) : 4309–18. http://dx.doi.org/10.1039/c5py00452g.

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Fluorine-containing amphiphilic graft copolymers made of a semi-fluorinated PMBTFVB backbone and hydrophilic PAA side chains were synthesized by the combination of thermal cycloaddition polymerization and ATRP.
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Kim, Jong Hak, Ha Rim Jeon, Sung Hoon Ahn et Won Seok Chi. « Use of Amphiphilic Graft Copolymer as Dispersant for Carbon Nanotubes ». Polymer Korea 35, no 6 (30 novembre 2011) : 615–18. http://dx.doi.org/10.7317/pk.2011.35.6.615.

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Ahn, Sung Hoon, Jin Ah Seo, Jong Hak Kim, Youngdeok Ko et Seong Uk Hong. « Synthesis and gas permeation properties of amphiphilic graft copolymer membranes ». Journal of Membrane Science 345, no 1-2 (décembre 2009) : 128–33. http://dx.doi.org/10.1016/j.memsci.2009.08.037.

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Nitta, Kyohei, Atsushi Kimoto et Junji Watanabe. « Surface properties of amphiphilic graft copolymer containing different oligo segments ». Polymer 96 (juillet 2016) : 45–53. http://dx.doi.org/10.1016/j.polymer.2016.04.055.

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Samanta, Sanjoy, Rama K. Layek et Arun K. Nandi. « Active immobilized palladium catalyst based on multiporous amphiphilic graft copolymer ». Reactive and Functional Polymers 71, no 10 (octobre 2011) : 1045–54. http://dx.doi.org/10.1016/j.reactfunctpolym.2011.07.006.

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Lin, Yining, et Paschalis Alexandridis. « Self-Assembly of an Amphiphilic Siloxane Graft Copolymer in Water ». Journal of Physical Chemistry B 106, no 42 (octobre 2002) : 10845–53. http://dx.doi.org/10.1021/jp014220q.

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Li, Zhongyu, Pengpeng Li et Junlian Huang. « Synthesis of amphiphilic copolymer brushes : Poly(ethylene oxide)-graft-polystyrene ». Journal of Polymer Science Part A : Polymer Chemistry 44, no 15 (2006) : 4361–71. http://dx.doi.org/10.1002/pola.21515.

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Roh, Dong Kyu, Jin Kyu Choi, Jong Kwan Koh, Yong Gun Shul et Jong Hak Kim. « Nanocomposite proton conducting membranes based on amphiphilic PVDF graft copolymer ». Macromolecular Research 18, no 3 (mars 2010) : 271–78. http://dx.doi.org/10.1007/s13233-010-0311-9.

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Wang, Yupeng, Lesan Yan, Bin Li, Yanxin Qi, Zhigang Xie, Xiabin Jing, Xuesi Chen et Yubin Huang. « Protein-Resistant Biodegradable Amphiphilic Graft Copolymer Vesicles as Protein Carriers ». Macromolecular Bioscience 15, no 9 (2 juin 2015) : 1304–13. http://dx.doi.org/10.1002/mabi.201500096.

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Constantin, Marieta, Bogdan Cosman, Maria Bercea, Gabriela-Liliana Ailiesei et Gheorghe Fundueanu. « Thermosensitive Poloxamer-graft-Carboxymethyl Pullulan : A Potential Injectable Hydrogel for Drug Delivery ». Polymers 13, no 18 (7 septembre 2021) : 3025. http://dx.doi.org/10.3390/polym13183025.

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A thermosensitive copolymer composed of amphiphilic triblock copolymer, poloxamer 407, grafted on hydrophilic pullulan with pendant carboxymethyl groups (CMP) was prepared and characterized. The structure of the new copolymer was assessed by Fourier transform infrared (FT-IR) and 1H nuclear magnetic resonance (1H NMR) spectroscopy. The content of the poloxamer in the grafted copolymer was 83.8% (w/w). The effect of the copolymer concentration on the gelation behavior was analyzed by the vertical method and rheological tests; the gel phase of the copolymer occurred at a lower concentration (11%, w/v) as compared with poloxamer (18%, w/v). The starting gelation time under the simulated physiological conditions (phosphate buffer with a pH of 7.4, at 37 °C) was sensitive on the rest temperature before the test, this being 990 s and 280 s after 24 h rest at 4 °C and 20 °C, respectively. The rheological tests evidenced a high elasticity and excellent ability of the copolymer to recover the initial structure after the removal of the applied force or external stimuli. Moreover, the hydrogel has proved a sustained release of amoxicillin (taken as a model drug) over 168 h. Taken together, the results clearly indicate that this copolymer can be used as an injectable hydrogel.
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Wang, Fang Ping, Xin Zhen Du, Hu Po Mu, Dong Xia Zhang et Yun Jun Ma. « Self-Assembly of Amphiphilic Graft Copolymer with Poly(acrylic Acid) Backbone and N-Octylphenyl Poly(oxyethylene) Side Chains in Water ». Advanced Materials Research 233-235 (mai 2011) : 2138–44. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.2138.

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The self-assembly of the amphiphilic graft copolymer AA-C8PhEO10Ac in water was investigated by fluorescence technique using 8-anilino-1-naphthalene sulfonate(ANS) as a probe and transmission electron microscopy (TEM), the effects of inorganic salt , copolymer concentration and pH on the micellar size and structures of AA-C8PhEO10Ac were discussed. It was found that the micelle morphologies and sizes were related with the micellar preparation methods. The sizes of micelles increased with the addition of NaCl and decreased at high pH values.
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Jiang, Xiuyu, Xue Jiang, Guolin Lu, Chun Feng et Xiaoyu Huang. « The first amphiphilic graft copolymer bearing a hydrophilic poly(2-hydroxylethyl acrylate) backbone synthesized by successive RAFT and ATRP ». Polym. Chem. 5, no 17 (2014) : 4915–25. http://dx.doi.org/10.1039/c4py00415a.

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This paper reports the first synthesis of well-defined amphiphilic graft copolymers, consisting of a hydrophilic poly(2-hydroxyethyl acrylate) (PHEA) backbone and hydrophobic polystyrene side chains, by the combination of RAFT polymerization, ATRP, and the grafting-from strategy.
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Lim, Jung Yup, Jin Kyu Kim, Jung Min Lee, Du Yeol Ryu et Jong Hak Kim. « An amphiphilic block–graft copolymer electrolyte : synthesis, nanostructure, and use in solid-state flexible supercapacitors ». Journal of Materials Chemistry A 4, no 20 (2016) : 7848–58. http://dx.doi.org/10.1039/c6ta00888g.

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A highly ionic conductive amphiphilic nanostructured polymer electrolyte with good flexibility is prepared based on a SBS-g-POEM block–graft copolymer. The performance of solid-state flexible supercapacitors based on the SBS-g-POEM electrolyte was much higher than that of the widely used conventional PVA/H3PO4 electrolyte.
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Mei, Xiang Dong, Yan Hui Liang, Tao Zhang, Jun Ning et Zhong Yue Wang. « An Amphiphilic Chitosan-Polylactide Graft Copolymer and its Nanoparticles as Fungicide Carriers ». Advanced Materials Research 1051 (octobre 2014) : 21–28. http://dx.doi.org/10.4028/www.scientific.net/amr.1051.21.

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In the present study, an amphiphilic chitosan-polylactide (CS-PLA) graft copolymer was synthesized through grafting polylactide (PLA) onto water-soluble chitosan (CS), and the chemical structure of this newly developed copolymer was confirmed by FT-IR, 1H NMR and thermogravimetric analysis (TGA). Stable flusilazole-loaded nanoparticles (NS), with a size near 280.3 nm and a loading content (LC) of 29.0%, were prepared for the fungicide delivery using a nanoprecipitation method. Moreover, size, size distribution and the flusilazole LC as well as the in vitro release profile of flusilazole-loaded NS were investigated. In conclusion, the NS could provide a controlled release of flusilazole and enhance the penetration of flusilazole in the plant compared with classical flusilazole emulsifiable concentrate (EC) formulation due to their small particle size. Therefore, the CS-PLA NS could be used as fungicide carriers for the flusilazole delivery system.
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Li, Zhongyu, Pengpeng Li et Junlian Huang. « Synthesis and characterization of amphiphilic graft copolymer poly(ethylene oxide)-graft-poly(methyl acrylate) ». Polymer 47, no 16 (juillet 2006) : 5791–98. http://dx.doi.org/10.1016/j.polymer.2006.05.057.

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Soleimani, Abdolrasoul, Mahmoud M. Abd Rabo Moustafa, Aneta Borecki et Elizabeth R. Gillies. « A comparison of covalent and noncovalent strategies for paclitaxel release using poly(ester amide) graft copolymer micelles ». Canadian Journal of Chemistry 93, no 4 (avril 2015) : 399–405. http://dx.doi.org/10.1139/cjc-2014-0349.

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Micelles formed from amphiphilic copolymers are promising for the delivery of drug molecules, potentially leading to enhanced properties and efficacies. Critical aspects of these systems include the use of biocompatible, biodegradable polymer backbones as well as the ability to control the incorporation of drugs and their release rates. In this work, a poly(ester amide)–poly(ethylene oxide) graft copolymer with paclitaxel conjugated via ester linkages was prepared and assembled into micelles. For comparison, micelles with physically encapsulated paclitaxel were also prepared. The release rates of these two systems were studied, and the micelles with covalently conjugated paclitaxel exhibited a prolonged release of the drug in comparison to the noncovalent system, which rapidly released the payload. In vitro studies suggested that the poly(ester amide)–poly(ethylene oxide) copolymers were nontoxic, whereas the toxicities of the drug-loaded micelles were dependent on their release rates. Overall, these systems are promising for further development as anticancer drug carriers.
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Qian, Wenhao, Tao Song, Mao Ye, Peicheng Xu, Guolin Lu et Xiaoyu Huang. « PAA-g-PLA amphiphilic graft copolymer : synthesis, self-assembly, and drug loading ability ». Polymer Chemistry 8, no 28 (2017) : 4098–107. http://dx.doi.org/10.1039/c7py00762k.

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This article reports the synthesis of a PAA-g-PLA amphiphilic polymer by the combination of RAFT polymerization and organocatalytic ROP, which could self-assemble into spheres in aqueous media for sustained release of doxorubicin.
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Dualeh, Abdulkadir J., et Carol A. Steiner. « Hydrophobic microphase formation in surfactant solutions containing an amphiphilic graft copolymer ». Macromolecules 23, no 1 (janvier 1990) : 251–55. http://dx.doi.org/10.1021/ma00203a043.

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Patel, Rajkumar, Sang Jin Kim, Jin Kyu Kim, Jung Su Park et Jong Hak Kim. « Preparation of Al@Fe2O3Core-Shell Composites Using Amphiphilic Graft Copolymer Template ». Korean Chemical Engineering Research 52, no 2 (1 avril 2014) : 209–13. http://dx.doi.org/10.9713/kcer.2014.52.2.209.

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Mamusa, Marianna, Constantina Sofroniou, Claudio Resta, Sergio Murgia, Emiliano Fratini, Johan Smets et Piero Baglioni. « Tuning the Encapsulation of Simple Fragrances with an Amphiphilic Graft Copolymer ». ACS Applied Materials & ; Interfaces 12, no 25 (28 mai 2020) : 28808–18. http://dx.doi.org/10.1021/acsami.0c05892.

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Zushun, Xu, Feng Linxian, Ji Jian, Cheng Shiyuan, Chen Yongchun et Yi Changfeng. « The micellization of amphiphilic graft copolymer PMMA-g-PEO in toluene ». European Polymer Journal 34, no 10 (octobre 1998) : 1499–504. http://dx.doi.org/10.1016/s0014-3057(97)00279-6.

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Lemechko, Pierre, Estelle Renard, Jean Guezennec, Christelle Simon-Colin et Valerie Langlois. « Synthesis of dextran-graft-PHBHV amphiphilic copolymer using click chemistry approach ». Reactive and Functional Polymers 72, no 8 (août 2012) : 487–94. http://dx.doi.org/10.1016/j.reactfunctpolym.2012.04.008.

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WU, Y., Y. ZHENG, W. YANG, C. WANG, J. HU et S. FU. « Synthesis and characterization of a novel amphiphilic chitosan?polylactide graft copolymer ». Carbohydrate Polymers 59, no 2 (10 janvier 2005) : 165–71. http://dx.doi.org/10.1016/j.carbpol.2004.09.006.

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