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Wang Y, Wan L, Sun Y, Zhang H. Synthesis of articular cartilage‐inspired branched polyelectrolyte polymer for enhanced lubrication. BIOSURFACE AND BIOTRIBOLOGY 2020. [DOI: 10.1049/bsbt.2020.0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Yixin Wang
- State Key Laboratory of TribologyDepartment of Mechanical EngineeringTsinghua UniversityBeijing100084People's Republic of China
| | - Li Wan
- State Key Laboratory of TribologyDepartment of Mechanical EngineeringTsinghua UniversityBeijing100084People's Republic of China
- College of MiningGuizhou UniversityGuiyang550025People's Republic of China
| | - Yulong Sun
- State Key Laboratory of TribologyDepartment of Mechanical EngineeringTsinghua UniversityBeijing100084People's Republic of China
| | - Hongyu Zhang
- State Key Laboratory of TribologyDepartment of Mechanical EngineeringTsinghua UniversityBeijing100084People's Republic of China
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2
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Facile preparation and characterization of temperature-responsive hydrophilic crosslinked polymer microspheres by aqueous dispersion polymerization. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109610] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Wang H, Li W, Li Z. Preparation of fluorinated PCL porous microspheres and a super-hydrophobic coating on fabrics via electrospraying. NANOSCALE 2018; 10:18857-18868. [PMID: 30277254 DOI: 10.1039/c8nr05793a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, fluorinated polycaprolactone (PCL) block polymers with different fluorine contents were synthesized via atom transfer radical polymerization (ATRP). An electrospraying technique was used to prepare fluorinated PCL microspheres with different microstructures. In contrast to the golf ball shape of unmodified PCL microspheres displaying porous pits on the surface, block polymer PCL-PTFOA(2 h) and PCL-PTFOA(6 h) microsphere surfaces displayed regular honeycomb-like pore structures. Thermally induced and evaporation-induced phase separations are proposed as the main mechanisms involved in the formation of the porous microstructures. The micro-phase separation between the two blocks of the fluorinated PCL copolymer is another factor that promoted the uniform collapse on the microsphere surface and the formation of its rugged wall. The surface roughness of the porous microspheres significantly improved their hydrophobicity, generating coating contact angles on aluminium foil substrates that measured as high as 162.4 ± 1.5°, which revealed that the surfaces were super-hydrophobic. Lastly, cotton fabric was directly coated with the fluorinated polymer microspheres via electrospraying, resulting in super-hydrophobic surfaces and CAs reaching 160.0 ± 1.3°. The results demonstrate that electrospraying is a simple, innovative and cost-effective method for preparing polymer microspheres with controllable microstructures for fabric coating applications.
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Affiliation(s)
- Haipeng Wang
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215021, China.
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4
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Inpota P, Nacapricha D, Sunintaboon P, Sripumkhai W, Jeamsaksiri W, Wilairat P, Chantiwas R. Chemiluminescence detection with microfluidics for innovative in situ measurement of unbound cobalt ions in dynamic equilibrium with bound ions in binding study with polyethyleneimine and its functionalized nanoparticles. Talanta 2018; 188:606-613. [DOI: 10.1016/j.talanta.2018.06.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 06/05/2018] [Accepted: 06/06/2018] [Indexed: 11/24/2022]
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5
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Liu W, Li P, Zhang H. Preparation of thermosensitive microcapsules and application on the controllable drug delivery of ibuprofen. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1405349] [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]
Affiliation(s)
- Wei Liu
- State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, Tianjin Polytechnic University, Tianjin, China
- School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, China
- Tianjin Colouroad Coatings & Chemicals Co. Ltd, Tianjin, China
| | - Peisen Li
- School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, China
| | - Hongmei Zhang
- School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, China
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6
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Qiao Y, Zheng X. Investigation of the fluorescence quenching behavior of PEI-doped silica nanoparticles and its applications. RSC Adv 2016. [DOI: 10.1039/c6ra21543b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple and feasible method for overcoming the fluorescence quenching effect of PEI on fluorophores (eosin Y was chosen as the model dye) was designed for the first time.
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Affiliation(s)
- Yali Qiao
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry & Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
- P. R. China
| | - Xingwang Zheng
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry & Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
- P. R. China
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7
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Qi J, Lai X, Wang J, Tang H, Ren H, Yang Y, Jin Q, Zhang L, Yu R, Ma G, Su Z, Zhao H, Wang D. Multi-shelled hollow micro-/nanostructures. Chem Soc Rev 2015; 44:6749-73. [DOI: 10.1039/c5cs00344j] [Citation(s) in RCA: 550] [Impact Index Per Article: 61.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Recent advances in multi-shelled hollow micro-/nanostructures were reviewed, and the correlation between their geometric properties and specific performance was highlighted.
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8
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Preparation of polymer microspheres with reactive epoxy group and amino groups as stabilizers for gold nanocolloids with recoverable catalysis. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3408-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Gao J, Li W, Wong JSP, Hu M, Li RK. Controllable morphology and wettability of polymer microspheres prepared by nonsolvent assisted electrospraying. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.04.033] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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10
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Li R, Feng F, Wang Y, Yang X, Yang X, Yang VC. Folic acid-conjugated pH/temperature/redox multi-stimuli responsive polymer microspheres for delivery of anti-cancer drug. J Colloid Interface Sci 2014; 429:34-44. [PMID: 24935187 DOI: 10.1016/j.jcis.2014.05.008] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 05/07/2014] [Accepted: 05/09/2014] [Indexed: 12/29/2022]
Abstract
The folic acid (FA)-conjugated pH/temperature/redox multi-stimuli responsive poly(methacrylic acid-co-N,N-bis(acryloyl)cystamine/poly(N-isopropylacrylamide-co-glycidyl methacrylate-co-N,N-bis(acryloyl)cystamine) microspheres were prepared by a two-stage distillation-precipitation polymerization with subsequent surface modification with FA. The microspheres were characterized by transmission electron microscopy, dynamical light scattering, Fourier-transform infrared spectra, UV-vis spectra and elemental analysis. The degradation of the functional microspheres could be triggered by a reductive reagent, such as glutathione, due to presence of BAC crosslinker. The drug-loaded microspheres exhibited a pH/temperature/redox multi-stimuli responsive drug release character for doxorubicin hydrochloride as a model anti-cancer drug, which was efficiently loaded into the microspheres with a high loading capacity of 208.0% and an encapsulation efficiency of 85.4%. In vitro drug delivery study indicated that the FA-conjugated microspheres could deliver Dox into MCF-7 cells more efficiently than the microspheres without functionalization of FA. Furthermore, WST-1 assay showed that the microspheres had no obvious toxicity to MCF-7 cells even at a high concentration of 2000 μg mL(-1). The resultant microsphere may be a promising vector for delivery of anti-cancer drugs as it exhibits a low cytotoxicity and degradability, precise molecular targeting property and multi-stimuli responsively controlled drug release.
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Affiliation(s)
- Rongrong Li
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Basic Medical Research Center, School of Pharmacy, Tianjin Medical University, Tianjin 300070, PR China
| | - Fuli Feng
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Basic Medical Research Center, School of Pharmacy, Tianjin Medical University, Tianjin 300070, PR China
| | - Yinsong Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Basic Medical Research Center, School of Pharmacy, Tianjin Medical University, Tianjin 300070, PR China
| | - Xiaoying Yang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Basic Medical Research Center, School of Pharmacy, Tianjin Medical University, Tianjin 300070, PR China.
| | - Xinlin Yang
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, PR China.
| | - Victor C Yang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Basic Medical Research Center, School of Pharmacy, Tianjin Medical University, Tianjin 300070, PR China
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11
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Gao J, Wong JSP, Hu M, Li W, Li RKY. Facile preparation of hierarchically porous polymer microspheres for superhydrophobic coating. NANOSCALE 2014; 6:1056-1063. [PMID: 24292510 DOI: 10.1039/c3nr05281h] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A facile method, i.e., nonsolvent assisted electrospraying, is proposed to fabricate hierarchically porous microspheres. The pore size on the microsphere surface ranges from a few tens to several hundred nanometers. Thermally and nonsolvent induced phase separation as well as breath figure is responsible for the formation of the hierarchical structures with different nano-sized pores. The nonsolvent could not only induce phase separation, but also stabilize the interface between the droplet and air, which can prevent the droplet from strong deformation, and is therefore beneficial to the formation of regular and uniform microspheres. On the other hand, solvent evaporation, polymer diffusion and Coulomb fission during electrospraying influence the morphology of finally obtained products. In this paper, the influence of polymer concentration, the weight ratio between nonsolvent and polymer and the flowing rate on the morphology of the porous microsphere is carefully studied. The hierarchically porous microsphere significantly increases the surface roughness and thus the hydrophobicity, and the contact angle can reach as high as 152.2 ± 1.2°. This nonsolvent assisted electrospraying opens a new way to fabricate superhydrophobic coating materials.
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Affiliation(s)
- Jiefeng Gao
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China.
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12
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Feng F, Li R, Zhang Q, Wang Y, Yang X, Duan H, Yang X. Preparation of reduction-triggered degradable microcapsules for intracellular delivery of anti-cancer drug and gene. POLYMER 2014. [DOI: 10.1016/j.polymer.2013.11.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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13
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Hou S, Sun L, Wieczorek SA, Kalwarczyk T, Kaminski TS, Holyst R. Fluorescence correlation spectroscopy analysis for accurate determination of proportion of doubly labeled DNA in fluorescent DNA pool for quantitative biochemical assays. Biosens Bioelectron 2014; 51:8-15. [DOI: 10.1016/j.bios.2013.07.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 06/29/2013] [Accepted: 07/06/2013] [Indexed: 11/24/2022]
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14
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Liu B, Fu X, Wang D, Zhang W, Yang X. Synthesis of organic–inorganic hybrid microspheres and the corresponding mesoporous silica nanoparticles. J Colloid Interface Sci 2013; 411:98-104. [DOI: 10.1016/j.jcis.2013.08.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 08/16/2013] [Accepted: 08/22/2013] [Indexed: 10/26/2022]
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15
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Feng DF, Wu WX, He NN, Chen DY, Feng XZ. Analysis of chorion changes in developmental toxicity induced by polymer microspheres in Zebrafish embryos. RSC Adv 2013. [DOI: 10.1039/c3ra41503a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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16
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Li GL, Möhwald H, Shchukin DG. Precipitation polymerization for fabrication of complex core–shell hybrid particles and hollow structures. Chem Soc Rev 2013; 42:3628-46. [DOI: 10.1039/c3cs35517a] [Citation(s) in RCA: 238] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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17
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Sun J, Zeng F, Jian H, Wu S. Grafting zwitterionic polymer chains onto PEI as a convenient strategy to enhance gene delivery performance. Polym Chem 2013. [DOI: 10.1039/c3py00752a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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