Penicillin impregnation on oxygen plasma surface functionalized chitosan/ Antheraea assama silk fibroin: Studies of antibacterial activity and antithrombogenic property

2016 ◽  
Vol 60 ◽  
pp. 475-484 ◽  
Author(s):  
Arup Jyoti Choudhury ◽  
Dolly Gogoi ◽  
Raghuram Kandimalla ◽  
Sanjeeb Kalita ◽  
Yogesh B. Chaudhari ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Silk Fibroin ◽  
Oxygen Plasma ◽  
Plasma Surface ◽  
Antheraea Assama

scholarly journals Chitosan hydrogel/silk fibroin/Mg(OH)2 nanobiocomposite as a novel scaffold with antimicrobial activity and improved mechanical properties

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Reza Eivazzadeh-Keihan ◽  
Fateme Radinekiyan ◽  
Hooman Aghamirza Moghim Aliabadi ◽  
Sima Sukhtezari ◽  
Behnam Tahmasebi ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Cell Viability ◽  
Silk Fibroin ◽  
Analytical Techniques ◽  
Structural Features ◽  
Mechanical Tests ◽  
Chitosan Hydrogel ◽  
Biological Capacity ◽  
Ft Ir ◽  
Novel Scaffold

AbstractHerein, a novel nanobiocomposite scaffold based on modifying synthesized cross-linked terephthaloyl thiourea-chitosan hydrogel (CTT-CS hydrogel) substrate using the extracted silk fibroin (SF) biopolymer and prepared Mg(OH)2 nanoparticles was designed and synthesized. The biological capacity of this nanobiocomposite scaffold was evaluated by cell viability method, red blood cells hemolytic and anti-biofilm assays. According to the obtained results from 3 and 7 days, the cell viability of CTT-CS/SF/Mg(OH)2 nanobiocomposite scaffold was accompanied by a considerable increment from 62.5 to 89.6% respectively. Furthermore, its low hemolytic effect (4.5%), and as well, the high anti-biofilm activity and prevention of the P. aeruginosa biofilm formation confirmed its promising hemocompatibility and antibacterial activity. Apart from the cell viability, blood biocompatibility, and antibacterial activity of CTT-CS/SF/Mg(OH)2 nanobiocomposite scaffold, its structural features were characterized using spectral and analytical techniques (FT-IR, EDX, FE-SEM and TG). As well as, given the mechanical tests, it was indicated that the addition of SF and Mg(OH)2 nanoparticles to the CTT-CS hydrogel could improve its compressive strength from 65.42 to 649.56 kPa.

In vivo stimulation of bone formation by aluminum and oxygen plasma surface-modified magnesium implants

Biomaterials ◽  
2013 ◽  
Vol 34 (38) ◽  
pp. 9863-9876 ◽  
Author(s):  
Hoi Man Wong ◽  
Ying Zhao ◽  
Vivian Tam ◽  
Shuilin Wu ◽  
Paul K. Chu ◽  
...  
Keyword(s):  
Bone Formation ◽  
Oxygen Plasma ◽  
Plasma Surface ◽  
Surface Modified ◽  
Stimulation Of

scholarly journals Oxygen plasma surface modification enhances immobilization of simvastatin acid

2006 ◽  
Vol 27 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Masao YOSHINARI ◽  
Tohru HAYAKAWA ◽  
Kenichi MATSUZAKA ◽  
Takashi INOUE ◽  
Yutaka ODA ◽  
...  
Keyword(s):  
Surface Modification ◽  
Oxygen Plasma ◽  
Plasma Surface Modification ◽  
Plasma Surface ◽  
Simvastatin Acid

Ag/silk fibroin nanofibers: Effect of fibroin morphology on Ag+ release and antibacterial activity

2015 ◽  
Vol 67 ◽  
pp. 99-112 ◽  
Author(s):  
Semih Calamak ◽  
Eda Ayse Aksoy ◽  
Nusret Ertas ◽  
Ceren Erdogdu ◽  
Meral Sagıroglu ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Silk Fibroin ◽  
Silk Fibroin Nanofibers

scholarly journals Oxygen Plasma Surface Treatment onto ITO Surface for OLEDs Based on Europium Complex

2015 ◽  
Vol 10 (1) ◽  
pp. 7-12
Author(s):  
Gerson Santos ◽  
Marco R. Cavallari ◽  
Fernando J. Fonseca ◽  
Luiz Pereira
Keyword(s):  
Surface Treatment ◽  
Indium Tin Oxide ◽  
Oxygen Plasma ◽  
Transparent Electrode ◽  
Film Structure ◽  
Hole Injection ◽  
Light Emitting ◽  
Plasma Surface ◽  
Plasma Surface Treatment ◽  
Cie Chromaticity

In this work, Organic Light-Emitting Diodes (OLEDs) based on Europium (III) complex were studied, especially those with an oxygen plasma surface treatment onto indium tin oxide (ITO) transparent electrode. An OLED with the same thin-film structure but with untreated ITO was fabricated for comparison purposes. Current density-voltage characteristics for treated devices demonstrated an increase from 0.4 to 3.3 mA/cm² and a decrease of the turn-on voltage from 28 to 22 V. Additionally, improved hole injection through the transparent electrode impacted on optical response, as luminous efficiency increased from 26 to 44 mcd/A with the advantage of no significant disturb on the europium typical electroluminescence emission spectrum. Emission peak was observed at a wavelength of approximately 614 nm, which is defined by the transition associated with spectroscopic terms (5D0→7D2) and CIE chromaticity coordinates of (0.50;0.36).

IMPACT OF PLASMA SURFACE TREATMENT ON BAMBOO CHARCOAL/SILVER NANOCOMPOSITE

2016 ◽  
Vol 23 (01) ◽  
pp. 1550089 ◽  
Author(s):  
K. VIGNESH ◽  
K. A. VIJAYALAKSHMI ◽  
N. KARTHIKEYAN
Keyword(s):  
Antibacterial Activity ◽  
Plasma Treatment ◽  
Surface Area ◽  
Functional Groups ◽  
Oxygen Plasma ◽  
Bet Surface Area ◽  
Oxygen Plasma Treatment ◽  
Bamboo Charcoal ◽  
Area Formula ◽  
Vis Spectroscopy

Bamboo charcoal (BC) accompanied silver (Ag) nanocomposite is synthesized through sol–gel method. The produced BC/Ag nanocomposite was surface modified by air and oxygen plasma treatments. Silver ions (Ag[Formula: see text]) will serve to improve the antibacterial activity as well as the surface area of BC. Plasma treatment has improved the surface functional groups, crystalline intensity and antibacterial activity of the prepared nanocomposite. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) studies show that Ag nanoparticles have good agreement with BC and the particle size has a mean diameter of 20–40[Formula: see text]nm. We observe the carboxyl functional groups in Fourier transform infrared spectroscopy (FTIR) after the oxygen plasma treatment. Moreover surface area and adsorption were analyzed by using the Brunauer, Emmett and Teller (BET) surface area ([Formula: see text]) and UV–Vis spectroscopy.

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