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Novel acid-base hybrid membrane based on amine-functionalized reduced graphene oxide and sulfonated polyimide for vanadium redox flow battery
A series of novel acid-base hybrid membranes (SPI/PEI-rGO) based on sulfonated polyimide (SPI) with polyethyleneimine-functionalized reduced graphene oxide (PEI-rGO) are prepared by a solution-casting method for vanadium redox flow battery (VRB). FT-IR and XPS results prove the successful fabrication of PEI-rGO and SPI/PEI-rGO hybrid membranes, which show a dense and homogeneous structure observed...
http://www.polymer.cn//ss/hfshi/publicationsshow_8444.html |
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[Polymer Chenistry] Tunable wettability of hierarchical structured coatings derived from one-step synthesized raspberry-like poly(styrene-acrylic acid) particles
A facile one-step method to fabricate hierarchical structured coatings whose wettability could be easily tuned from hydrophilic (water contact angle, 9.3°) to superhydrophobic (water contact angle, 154.2°) by controlling the assembly temperature without any specialized equipment or additional modification is reported. The building blocks for the coatings, hierarchically raspberry-like poly(styre...
http://www.polymer.cn//ss/zhangqiuyu/publicationsshow_8339.html |
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Online Rheological Investigation on Ion-Induced Micelle Transition for Amphiphilic Polystyrene-block-Poly(acrylic acid) Diblock Copolymer in Dilute Solution
The ion-induced micellar transition is online-investigated by the
time dependence of the viscosity of the solution under shear flow for the first
time. During the morphological transition, the change in the micellar structure
can be tracked by the change in viscosity. Adding HCl or CaCl2 into preprepared
spherical micelle solution from the self-assembly of polystyrene-blockpoly(
acrylic acid) (PS1...
http://www.polymer.cn//ss/zhuyutian/publicationsshow_7950.html |
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Preparation of thermoresponsive Fe3O4/P(acrylic acid–methyl methacrylate–N-isopropylacrylamide) magnetic composite microspheres with controlled shell thickness and its releasing property for phenolphthalein
In this work, Fe3O4/P(acrylic acid–methyl methacrylate–N-isopropylacrylamide) (Fe3O4/P(AA–MMA–NIPAm)) thermoresponsive magnetic composite microspheres have been prepared by controlled radical polymerization in the presence of 1,1-diphenylethene (DPE). The shell thickness of thermosensitive polymer (PNIPAm), which was on the surface of the microspheres, can be controlled by using DPE method. ...
http://www.polymer.cn//ss/zhangqiuyu/publicationsshow_7798.html |
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Thermo- and pH-responsive Behaviors of Aqueous Poly(acrylic acid)/Poly(4-vinylpyridine) Complex Material Characterized by ATR-FTIR and UV-Vis Spectroscopy
A novel thermo- and pH- responsive poly(acrylic acid) (PAA)/poly(4-vinylpyridine) (P4VP) aqueous material with an upper critical solution temperature (UCST) was developed in this study. It was found that the formation of the aqueous complex material was caused by the deprotonation of pyridinium groups of P4VP molecules and consequent hydrogen bonding formation between pyridine and carboxyl...
http://www.polymer.cn//ss/cenglxl/publicationsshow_7523.html |
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The Nano-Composite Scaffold of Poly (lactide-co-glycolide) and Hydroxyapatite Surface-Grafted with L-lactic Acid Oligomer for Bone Repair. Acta Biomaterialia, 2009, 5：2680－2692
[Abstract]: Nanohydroxyapatite (op-HA) surface-modified with l-lactic acid oligomer (LAc oligomer) was prepared by LAc oligomer grafted onto the hydroxyapatite (HA) surface. The nanocomposite of op-HA/PLGA with different op-HA contents of 5, 10, 20 and 40wt.% in the composite was fabricated into three-dimensional scaffolds by the melt-molding and particulate leaching methods. PLGA and the nanoco...
http://www.polymer.cn//ss/pbzhang/publicationsshow_7036.html |
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Electrospun fibrous scaffolds of poly(lactic-co-glycolic acid) containing bovine glycosaminoglycan for cartilage tissue engineering and treatment of deep cartilage defects in the knee
Tissue engineering provides an alternative approach to restoring, maintaining or improving the function of human tissues by natural and synthetic biomaterials seeded with available cells. Synthetic polymers, mainly polyesters such as poly(L-lactic acid )(PLLA), poly(glycolic acid) (PGA) and their copolymers (PLGA), have shown potential applications in tissue engineering with unlimit...
http://www.polymer.cn//ss/pbzhang/publicationsshow_7003.html |
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Preparation of silica/poly(methacrylic acid)/polymer tri-layer hybrid microspheres and the corresponding hollow polymer microspheres with movable silica core
Hollow poly(divinylbenzene-co-methacrylic acid) (P(DVB-co-MAA)) microspheres were prepared by the selective dissolution of the non-crosslinked poly(methacrylic acid) (PMAA) mid-layer in ethanol from the corresponding silica/PMAA/P(DVB-co-MAA) tri-layer hybrid microspheres, which were afforded by a three-stage reaction. Silica/PMAA core-shell hybrid microspheres were prepared by the second-stage di...
http://www.polymer.cn//ss/yangxinlin/publicationsshow_6592.html |
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Synthesis and characterization of pH-sensitive poly(N-2-hydroxyethyl acrylamide)- acrylic acid (poly(HEAA/AA)) nanogels with antifouling protection for controlled-release
Major challenges in the development of effective stimuli-responsive nanogels as targeted drugand gene delivery carriers are to improve biocompatibility, stability, and controlled release during systemic circulation. In this work, biofunctional nanogels based on copolymers of poly(N-2-hydroxyethyl acrylamide) (polyHEAA) and acrylic acid (AA) with controlled size and morphol...
http://www.polymer.cn//ss/qiangchen/publicationsshow_6110.html |
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Block copolymer micelles with acid-labile ortho ester side-chains: Synthesis, characterization, and enhanced drug delivery to human glioma cells
A new type of block copolymer micelles for pH-triggered delivery of poorly water-oluble anticancer drugs has been synthesized and characterized. The micelles were formed by the self-assembly of an amphiphilic diblock copolymer consisting of a hydrophilic poly(ethylene glycol) (PEG) block and a hydrophobic polymethacrylate block (PEYM) bearing acid-labile ortho ester side-chains. The...
http://www.polymer.cn//ss/tangrupei/publicationsshow_5498.html |
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