Synthesis and Surface Chemistry of Spherical Mesoporous Organic−Inorganic Hybrid Particles with an Integrated Alcohol Functionality on the Pore Surface

2004 ◽  
Vol 16 (4) ◽  
pp. 670-681 ◽  
Author(s):  
Julia Ding ◽  
Christopher J. Hudalla ◽  
James T. Cook ◽  
Daniel P. Walsh ◽  
Cheryl E. Boissel ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Pore Surface ◽  
Hybrid Particles ◽  
Inorganic Hybrid

ELECTRORHEOLOGICAL RESPONSE OF POLYANILINE-TIO2 COMPOSITE SUSPENSIONS

2005 ◽  
Vol 19 (07n09) ◽  
pp. 1128-1134 ◽  
Author(s):  
J. H. SUNG ◽  
I. LEE ◽  
H. J. CHOI ◽  
S. B. CHOI
Keyword(s):  
Shear Force ◽  
High Dielectric Constant ◽  
Electrostatic Force ◽  
Particle Fraction ◽  
Hybrid Particles ◽  
Inorganic Hybrid ◽  
Active Particles ◽  
Fast Relaxation ◽  
Conducting Polyaniline ◽  
High Dielectric

As an organic/inorganic hybrid possessing advantages from the combination of their own unique properties, conducting polyaniline (PANI)-titanium dioxide ( TiO 2) hybrid particles were synthesized by an oxidation polymerization of aniline, and their ER characteristics were examined. Our aim was to study the ER behavior of highly potential ER-active particles using conducting polymer and TiO 2 nanoparticle with relatively high dielectric constant. In addition, we also investigated its ER behavior as a function of particle fraction of TiO 2 under an applied electric field. The result was interpreted in terms of the dielectric relaxation mismatch. The fast relaxation time of PANI/TiO 2 hybrid was considered to enhance electrostatic force over shear force under a hydrodynamic flow, showing its improved ER performance.

Organic-Inorganic Hybrid Materials From Surface Initiated Polymerization

1999 ◽  
Vol 576 ◽  
Author(s):  
Thomas A. P. Seery ◽  
Fatma Vatansever
Keyword(s):  
Surface Modification ◽  
Hybrid Materials ◽  
Chain Growth ◽  
Hybrid Particles ◽  
Complete Control ◽  
Inorganic Hybrid ◽  
Standard Methods ◽  
Surface Initiated Polymerization ◽  
Grafting Density ◽  
A New Technique

ABSTRACTA new technique in surface modification is presented where chain growth polymerizations are initiated from tethered ruthenium alkylidene catalysts and organic-inorganic hybrid materials are produced. This approach provides nearly complete control over the polymer layer at the organic-inorganic interface with independent control over the chain length and grafting density. Hybrid particles are characterized using standard methods, i.e. NMR and transmission IR.

Control of the spatial homogeneity of pore surface chemistry in particulate activated carbon

Carbon ◽  
2015 ◽  
Vol 95 ◽  
pp. 144-149 ◽  
Author(s):  
Saeid Sedghi ◽  
S. Hadi Madani ◽  
Cheng Hu ◽  
Ana Silvestre-Albero ◽  
William Skinner ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Surface Chemistry ◽  
Pore Surface ◽  
Spatial Homogeneity

Positronium annihilation and pore surface chemistry in mesoporous silica films

2007 ◽  
Vol 91 (2) ◽  
pp. 024102 ◽  
Author(s):  
Chunqing He ◽  
Toshitaka Oka ◽  
Yoshinori Kobayashi ◽  
Nagayasu Oshima ◽  
Toshiyuki Ohdaira ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Surface Chemistry ◽  
Pore Surface ◽  
Silica Films ◽  
Positronium Annihilation

Synthesis of Organic-Inorganic Hybrid Particles by Sol-Gel Chemistry

2004 ◽  
Vol 31 (1-3) ◽  
pp. 31-36 ◽  
Author(s):  
Anna Arkhireeva ◽  
John N. Hay ◽  
Jackie M. Lane ◽  
Miguel Manzano ◽  
Helen Masters ◽  
...  
Keyword(s):  
Sol Gel ◽  
Hybrid Particles ◽  
Inorganic Hybrid

Immobilization of Lipase on Iron Oxide Organic/Inorganic Hybrid Particles: A Review Article

2018 ◽  
Vol 53 (1) ◽  
pp. 106-117 ◽  
Author(s):  
Zafar Ali ◽  
Tian Li ◽  
Muhammad Khan ◽  
Nisar Ali ◽  
Qiuyu Zhang
Keyword(s):  
Iron Oxide ◽  
Storage Capacity ◽  
Industrial Process ◽  
Hybrid Nanoparticles ◽  
Hybrid Particles ◽  
Lipase Immobilization ◽  
Inorganic Hybrid ◽  
Long Time ◽  
Bio Compatibility ◽  
And Storage

Abstract In last few decades the demand of lipase has been dramatically increase due to its useful use in numbers of biochemical industries. Varieties of natural and synthetic carriers and methodologies have been used to improve lipase activities by the process of immobilization in order to enhance its activities in term of its resistance to high temperature, pH and to increase its reusibity and storage capacity. Due to the expensive nature the recycling of the lipase has been the target of the researchers to decrease its cost in the industrial process. Magnetic iron oxide organic/inorganic hybrid nanoparticles as a support have been mostly used in the lipase immobilization due its large surface area, less toxicity, bio compatibility, easily functionalization, separation avoiding long time consuming process like filtration and centrifuging.

scholarly journals Synthesis and characterisation of organic-inorganic hybrid polymers: Polystyrene-SiO2 & Polystyrene-TiO2

2018 ◽  
Author(s):  
Josue Ayuso-Carrillo
Keyword(s):  
Organic Phase ◽  
Research Effort ◽  
Sol Gel ◽  
Chemical Species ◽  
Hybrid Particles ◽  
Hybrid Polymers ◽  
Inorganic Hybrid ◽  
Sol Gel Process ◽  
The Difference ◽  
Two Stages

This work focuses on the synthesis and characterisation of a new class of materials so-called organic-inorganic hybrid polymers, whose main characteristics are the synergy and bonding between an organic phase with an inorganic phase. This thesis is a research effort towards getting new and better materials for diverse and specialised applications.The synthesis of materials was carried out in two stages: in the first one hybrid particles of SiO2 and TiO2 were obtained via sol-gel process, both of them functionalised with vinyl groups, and nominal diameters of 200 nm and 220 nm, respectively. In the second stage hybrid polymers of the type polystryrene-SiO2 (PS-SiO2) and polystyrene-TiO2 (PS-TiO2) were obtained via free radical polymerisation, and employing different concentrations of the functionalised hybrid particles obtained in the first stage. These materials formed translucent and semiflexible films.The presence of the inorganic phase inside the organic phase for both systems, PS-SiO2 and PS-TiO2, promoted a decrease on the Tg inversely proportional to the concentration increase of PS-SiO2 and PS-TiO2, respectively, which suggests that the particles confer a plasticiser effect over the polymer matrix.For both systems, PS-SiO2 and PS-TiO2, apart from the Tg decrease, there were differences on the elastic modulus measured. These results suggest that these differences might be due to the difference in particle size and chemical species. Likewise, the thermal stability of both PS-SiO2 and PS-TiO2 increased significantly and in the same order, relative to pristine polystyrene.

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