【摘 要】
：
In this work,novel antibacterial cellulose diacetate/poly(ethylenimine)/hyaluronic acid (CDA/PEI/HA)composite three-dimension (3D) scaffolds were prepared through electrospinning and post-processing.Firstly,CDA/PEI 2D composite nanofiber membranes were pr
【机 构】
：
Center of Photonics &Bio-Medical Diagnosis,School of Science,East China University of Science and Te
论文部分内容阅读
In this work,novel antibacterial cellulose diacetate/poly(ethylenimine)/hyaluronic acid (CDA/PEI/HA)composite three-dimension (3D) scaffolds were prepared through electrospinning and post-processing.Firstly,CDA/PEI 2D composite nanofiber membranes were prepared by electrospinning,and then the CDA/PEI/HA 3D composite scaffolds were fabricated by post-processing and freeze-drying of CDA/PEI membranes.In particular,HA was added to improve the biocompatibility of composite scaffolds.Com-pared with CDA/PEI scaffolds,CDA/PEI/HA composite scaffolds showed higher water absorbing rate,higher water retention rate and higher mechanical strength.Moreover,CDA/PEI/HA composite scaffolds with abundant positive charge were benefit for improving antibacterial activity.CDA/PEI/HA scaffolds with biology function of HA were benefit for improving hemocompatibility and cell proliferation of CDA/PEI scaffolds.In summary,antibacterial CDA/PEI/HA scaffolds could protect wound from bacterial infection,improve cellular behavior and accelerate wound healing.Thus,CDA/PEI/HA scaffolds could be potential application for wound dressing.
其他文献
Oxide inclusions widely exist in additively manufactured components due to the native oxide layer on the powder surface,together with gas impurities during the printing process.Using in-situ tensile tests combined with electron backscatter diffraction (EB
TMSi2 (TM =Ta,Mo) are extensively used as thermal emissivity agents in high emission coatings due to their well-known “high” emissivity in infrared range.However,there is a paucity of the high temper-ature (HT) emissivity property of these two silicides.M
The correlation between depassivation and repassivation processes,which is significant in erosion-corrosion,was quantitatively investigated by single particle impingement tests at various flow velocities and impact angles.The results show that both repass
Single-phase Al-Mg alloys processed by severe plastic deformation (SPD) usually suffer from unsatis-factory thermal stability at moderate to high temperatures with recrystallization occurring and obvious grain coarsening.In the present work,an Al-7Mg allo
Tungsten bronze coatings and films have attracted global attention for their applications in near-infrared(NIR)-shielding windows.However,they are unstable in strong ultraviolet,humid heat,alkaline and/or oxidizing environments and are difficult to be coa
The extended cycle life of cells is often sacrificed at the expense of high specific energy for high-nickel materials.Cation doping is a promising method to build high-nickel cathode with high energy density and long cycle life.Herein,a trace amount of Mg
The NiSiAlY material is a promising candidate to replace NiCrAlY,which can withstand the harsh salt-spray conditions in marine environment.To efficiently design novel NiSiAlY alloys,this work establishes a thermodynamic dataset of the Al-Ni-Si-Y quaternar
Chitosan (CS) is the only natural alkaline polysaccharide originated from deacetylation of chitin that is the main component of shell from marine organisms.It has great potential medical application due to its broad-spectrum antimicrobial activity and goo
Unique two-dimensional (2D) porous nanosheets with overwhelmingly rich channels and large specific surface area exhibit superior electrochemical capacitance performance,as compared to the conventional zero-and one-dimensional counterparts.As ternary trans
Femtosecond laser induced periodic surface structures (LIPSSs) are excellent biomimetic iridescent antireflective interfaces.In this work,we demonstrate the feasibility to develop tunable iridescent antire-flective surfaces via simultaneous synthesis of f