Stepwise surface modification of mesoporous silica and its use in poly(urethane‐urea) composite films

2021 ◽  
Author(s):  
Afsaneh Fakhar ◽  
Morteza Sadeghi ◽  
Mohammad Dinari
Keyword(s):  
Surface Modification ◽  
Mesoporous Silica ◽  
Composite Films

Effects of surface modification and size on oral drug delivery of mesoporous silica formulation

2018 ◽  
Vol 513 ◽  
pp. 736-747 ◽  
Author(s):  
Ying Wang ◽  
Yu Cui ◽  
Yating Zhao ◽  
Qinfu Zhao ◽  
Bing He ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Surface Modification ◽  
Mesoporous Silica ◽  
Oral Drug Delivery ◽  
Oral Drug

A surface modification scheme for incorporation of nanocrystals in mesoporous silica matrix

2005 ◽  
Vol 178 (10) ◽  
pp. 2980-2986 ◽  
Author(s):  
Lan Zhao ◽  
Guangshan Zhu ◽  
Daliang Zhang ◽  
Yue Chen ◽  
Shilun Qiu
Keyword(s):  
Surface Modification ◽  
Mesoporous Silica ◽  
Silica Matrix

Engineering surface functional groups on mesoporous silica: towards a humidity-resistant hydrophobic adsorbent

2018 ◽  
Vol 6 (28) ◽  
pp. 13769-13777 ◽  
Author(s):  
Shuai Liu ◽  
Yue Peng ◽  
Jianjun Chen ◽  
Wenbo Shi ◽  
Tao Yan ◽  
...  
Keyword(s):  
Surface Modification ◽  
Thermal Treatment ◽  
Mesoporous Silica ◽  
Functional Groups ◽  
Surface Functional Groups ◽  
Adsorption Selectivity

Manipulating surface modification through a selective thermal treatment, an adsorbent with high hydrophobicity and adsorption selectivity for toluene was fabricated.

scholarly journals Layer by Layer Mesoporous Silica-Hyaluronic Acid-Cyclodextrin Bifunctional “Lamination”: Study of the Application of Fluorescent Probe and Host–Guest Interactions in the Drug Delivery Field

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1745 ◽  
Author(s):  
Kun Nie ◽  
Qi An ◽  
Jeffrey Zink ◽  
Xiang Yu ◽  
Yihe Zhang
Keyword(s):  
Hyaluronic Acid ◽  
Mesoporous Silica ◽  
Laser Scanning ◽  
Fluorescent Dyes ◽  
Mesoporous Silica Nanoparticles ◽  
Composite Films ◽  
Fluorescein Isothiocyanate ◽  
Layer By Layer ◽  
Layer Technique ◽  
Growth Profiles

The layer-by-layer technique was exploited to adjust the magnitude of the host–guest interactions between adamantane and cyclodextrin. The effect depends on numerous complex and changeable growth profiles of the films and the number of bilayers. These composite films of mesoporous silica nanoparticles and hyaluronic acid–cyclodextrin(HA-CD) were constructed to load the fluorescent dyes and peptides. The release rates of these molecules would decrease with an increase in the number of layers. A laser scanning confocal microscope was utilized to obtain the diffusion coefficient of fluorescein isothiocyanate. Hybrid films could be applied to increase the loading of different kinds of molecules and could also be integrated into the lamination to delay the rate of release.

Impedance spectroscopy of novel hybrid composite films of polyvinylbutyral (PVB)/functionalized mesoporous silica

2014 ◽  
Vol 58 ◽  
pp. 134-139 ◽  
Author(s):  
Aashis S Roy ◽  
Satyajit Gupta ◽  
Sindhu Seethamraju ◽  
Giridhar Madras ◽  
Praveen C Ramamurthy
Keyword(s):  
Impedance Spectroscopy ◽  
Mesoporous Silica ◽  
Hybrid Composite ◽  
Composite Films ◽  
Functionalized Mesoporous Silica

Fabrication and characterization of polyimide/Al2O3 composite films via surface modification and ion exchange technique

2016 ◽  
Vol 45 (1) ◽  
pp. 30-37 ◽  
Author(s):  
M.Y. Zhang ◽  
L.Z. Liu ◽  
L. Weng ◽  
W.W. Cui ◽  
K.S. Hui
Keyword(s):  
Surface Modification ◽  
Ion Exchange ◽  
Breakdown Strength ◽  
Composite Films ◽  
Annealing Treatment ◽  
Ambient Air ◽  
Ammonia Solution ◽  
Excellent Thermal Stability ◽  
Content Type ◽  
General Importance

Purpose – The aim of this study was to fabricate polyimide (PI)/Al2O3 composite films via surface modification and ion exchange techniques, and examine their properties. Design/methodology/approach – The method involves hydrolyzing the PI film double surface layers in an aqueous potassium hydroxide (KOH) solution and incorporating aluminium ions (Al3+) into the hydrolyzed layers of the PI film via subsequent ion exchange, followed by a treatment of the Al3+-loaded PI films with an aqueous ammonia solution, which leads to the formation of Al(OH)3 in the surface-modified layers. After a final thermal annealing treatment in ambient air, the Al(OH)3 decomposes to Al2O3, and forms composite layers on both surfaces of the re-imidized PI film. Findings – The PI/Al2O3 composite film obtained with a 6 hours of KOH treatment exhibited excellent thermal stability, good mechanical properties and better electric breakdown strength and corona-resistance properties than the pristine PI film. Practical implications – The method for obtaining the composite films in this paper is worth consideration, but additional research will be needed. Furthermore, this method is of general importance for the fabrication of composite PI films with tailored properties. Originality/value – This study showed that surface modification and ion-exchange techniques are powerful methodologies for the fabrication of PI/Al2O3 composite films.

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