Controlled growth and subsequent chemical modification of poly(glycidyl methacrylate) brushes on silicon wafers

2004 ◽  
Vol 14 (4) ◽  
pp. 730 ◽  
Author(s):  
Steve Edmondson ◽  
Wilhelm T. S. Huck
Keyword(s):  
Chemical Modification ◽  
Glycidyl Methacrylate ◽  
Silicon Wafers ◽  
Controlled Growth ◽  
Subsequent Chemical

Zn-INDUCED DENSITY-CONTROLLED GROWTH OF β-SiC NANOTUBES WITH TUNABLE FIELD EMISSION AND HYDROPHOBIC PROPERTIES

NANO ◽  
2011 ◽  
Vol 06 (05) ◽  
pp. 441-453 ◽  
Author(s):  
G. Z. YANG ◽  
H. CUI ◽  
C. X. WANG
Keyword(s):  
Field Emission ◽  
Growth Mechanism ◽  
Growth Process ◽  
Large Scale ◽  
Thermal Evaporation ◽  
Strong Dependence ◽  
Silicon Wafers ◽  
Controlled Growth ◽  
Hydrophobic Properties ◽  
Single Crystalline

Density-controlled single-crystalline β- SiC nanotubes were successfully synthesized on a large scale by adding Zn into the system via direct thermal evaporation of C 60 onto silicon wafers at 1290°C. Interestingly, no Zn elements can be detected in the final products. However, the addition of Zn power is important because without Zn , density-controlled SiC nanotubes cannot be observed in our experiment. On the basis of the results, a possible growth mechanism was proposed to illustrate the role that Zn played in the growth process. The field emission and hydrophobic performances show strong dependence on the densities of as-synthesized β- SiC nanotubes. The density-controlled β- SiC nanotubes with tunable field emission and hydrophobic properties may have potential in the future of nanotechnology.

scholarly journals Cytocompatibility of Modified Silk Fibroin with Glycidyl Methacrylate for Tissue Engineering and Biomedical Applications

Biomolecules ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 35
Author(s):  
Heesun Hong ◽  
Ok Joo Lee ◽  
Young Jin Lee ◽  
Ji Seung Lee ◽  
Olatunji Ajiteru ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Chemical Modification ◽  
Silk Fibroin ◽  
Glycidyl Methacrylate ◽  
Biomedical Applications ◽  
Biological Assessment ◽  
Biological Damage ◽  
Encapsulated Cells ◽  
Chemical Residues ◽  
Β Sheet

Hydrogel with chemical modification has been used for 3D printing in the biomedical field of cell and tissue-based regeneration because it provides a good cellular microenvironment and mechanical supportive ability. As a scaffold and a matrix, hydrogel itself has to be modified chemically and physically to form a β-sheet crosslinking structure for the strength of the biomaterials. These chemical modifications could affect the biological damage done to encapsulated cells or surrounding tissues due to unreacted chemical residues. Biological assessment, including assessment of the cytocompatibility of hydrogel in clinical trials, must involve testing with cytotoxicity, irritation, and sensitization. Here, we modified silk fibroin and glycidyl methacrylate (Silk-GMA) and evaluated the physical characterizations, residual chemical detection, and the biological effect of residual GMA depending on dialysis periods. Silk-GMA depending on each dialysis period had a typical β-sheet structure in the characterization analysis and residual GMA decreased from dialysis day 1. Moreover, cell proliferation and viability rate gradually increased; additionally, necrotic and apoptotic cells decreased from dialysis day 2. These results indicate that the dialysis periods during chemical modification of natural polymer are important for removing unreacted chemical residues and for the potential application of the manufacturing standardization for chemically modified hydrogel for the clinical transplantation for tissue engineering and biomedical applications.

Patterning of Functional Compounds by Multicomponent Langmuir−Blodgett Transfer and Subsequent Chemical Modification

Langmuir ◽  
2010 ◽  
Vol 26 (19) ◽  
pp. 15388-15393 ◽  
Author(s):  
Julia C. Niehaus ◽  
Michael Hirtz ◽  
Marion K. Brinks ◽  
Armido Studer ◽  
Harald Fuchs ◽  
...  
Keyword(s):  
Chemical Modification ◽  
Langmuir Blodgett ◽  
Subsequent Chemical

Chemical modification of glycidyl methacrylate polymers with 4-hydroxy-4′-methoxybiphenyl groups

1998 ◽  
Vol 34 (7) ◽  
pp. 1039-1045 ◽  
Author(s):  
D Navarro-Rodriguez ◽  
F.J Rodriguez-Gonzalez ◽  
J Romero-Garcia ◽  
E.J Jimenez-Regalado ◽  
D Guillon
Keyword(s):  
Chemical Modification ◽  
Glycidyl Methacrylate ◽  
Methacrylate Polymers

scholarly journals Condensed dewdrops self-ejecting on sprayable superhydrophobic CNT/SiO2 composite coating

RSC Advances ◽  
2017 ◽  
Vol 7 (44) ◽  
pp. 27574-27577 ◽  
Author(s):  
Shanlin Wang ◽  
Jing Zhang ◽  
Xinquan Yu ◽  
Youfa Zhang
Keyword(s):  
Chemical Modification ◽  
Composite Coating ◽  
Self Assembly ◽  
Nano Particles ◽  
Assembly Process ◽  
Carbon Nano Tubes ◽  
Subsequent Chemical

We report a type of novel condensed dewdrops self-ejecting coating from sprayable paint, which was prepared by a self-assembly process of SiO2 nano-particles on hydroxylated carbon nano-tubes with subsequent chemical modification.

Chemical modification of rubber wood with styrene and glycidyl methacrylate

2008 ◽  
Vol 29 (11) ◽  
pp. 1258-1262 ◽  
Author(s):  
Rashmi R. Devi ◽  
Tarun K. Maji
Keyword(s):  
Chemical Modification ◽  
Glycidyl Methacrylate ◽  
Rubber Wood

SPE of Phenols on New Amine - Based Copolymers

2014 ◽  
Vol 605 ◽  
pp. 173-176
Author(s):  
Magdalena Sobiesiak ◽  
Beata Podkościelna
Keyword(s):  
Phenolic Compounds ◽  
Chemical Modification ◽  
Water Purification ◽  
Primary Amine ◽  
Glycidyl Methacrylate ◽  
Active Sites ◽  
Polymer Surface ◽  
Porous Polymers ◽  
Purification Process ◽  
Amine Groups

Porous microspheres, copolymers: bis [4(2-hydroxy-3-methacryloyloxypropoxy)-phenysulfide (BES.DM) and glycidyl methacrylate (GMA) have been prepared by suspension-emulsion polymerization. The copolymer (BES.DM+GMA) including reactive epoxide rings was modified with three amines: butylenediamine (BDA), diethylenetriamine (DETA), triethylenetetramine (TETA). Next, attachment of HCO3- species to the primary amine groups took place.The prepared porous polymers were used as adsorbents in off-line SPE experiments. A mixture of phenol (PH), 2-chlorophenol (ChP), 2,4-dichlorophenol (DChP) and 2,4,6-trichlorophenol (TChP) as testing compounds was applied.Depending on the way of chemical modification, the prepared adsorbents possessed diverse sorption properties towards the testing compounds. Competition of the phenolic compounds for active sites presented on the polymer surface was observed. The most effective in water purification process were polymers possessing both amine and bicarbonate groups. The best recovery results were obtained for 2,4-dichlorophenol.

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