The strategy of modulation blood responses by surface modification with different functional groups on polyester film

2021 ◽  
Author(s):  
Rui Zhong ◽  
Zeng He ◽  
Xuejun Zhang ◽  
Dingding Han ◽  
Hong Wang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Functional Groups ◽  
Polyester Film

Surface Modification of Asymmetric Polysulfone Membrane by UV Irradiation

2014 ◽  
Vol 70 (2) ◽  
Author(s):  
Sutthisa Konruang ◽  
Thawat Chittrakarn ◽  
Suksawat Sirijarukul
Keyword(s):  
Contact Angle ◽  
Surface Modification ◽  
Functional Groups ◽  
Uv Irradiation ◽  
Water Flux ◽  
Inversion Method ◽  
Asymmetric Structure ◽  
Polysulfone Membrane ◽  
Polar Functional Groups ◽  
Polysulfone Membranes

The effects of ultraviolet (UV) irradiation for surface modification of hydrophobic asymmetric polysulfone membranes have been investigated. The asymmetric polysulfone (PSF) membranes were prepared by phase inversion method using 19%-25% of PSF in two solvents, viz. dimethylacetamide (DMF) and Acetone (Ac) collectively. The surface of asymmetric polysulfone membranes were modified by UV ray with 254 and 312 nm wavelength. Chemical and physical properties of the untreated and the treated membranes were characterized. Scanning electron microscope (SEM) was used to determine asymmetric structure of polysulfone membranes. Contact angle device was used to analyzed the effected of UV ray treatment on hydrophilicity of membranes surface. Polar functional groups introduced by UV irradiation were examined using FTIR. The water flux was measured under a pressure of 500 kPa to 2,500 kPa with a feed temperature of 25°C. It was shown that asymmetric polysulfone membranes were produced and the UV ray treatment significantly alters the hydrophilicity of membranes surface indicated by the reduction of water contact angle with increasing treatment time. The FTIR analysis showed the formations of polar functional groups such as hydroxyl and carbonyl groups. Consequently, the surface of asymmetric polysulfone membranes was changed from hydrophobic to hydrophilic by UV irradiation leading to the enhancement of the water flux.

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 A Review of the Surface Modification of Cellulose and Nanocellulose Using Aliphatic and Aromatic Mono- and Di-Isocyanates

Molecules ◽  
2019 ◽  
Vol 24 (15) ◽  
pp. 2782 ◽  
Author(s):  
Hatem Abushammala ◽  
Jia Mao
Keyword(s):  
Surface Modification ◽  
Functional Groups ◽  
Phenyl Isocyanate ◽  
Hexamethylene Diisocyanate ◽  
Toluene Diisocyanate ◽  
Diphenylmethane Diisocyanate ◽  
Chemical Modifications ◽  
Advantages And Disadvantages ◽  
Wide Range ◽  
Simple Molecules

Nanocellulose has been subjected to a wide range of chemical modifications towards increasing its potential in certain fields of interest. These modifications either modulated the chemistry of the nanocellulose itself or introduced certain functional groups onto its surface, which varied from simple molecules to polymers. Among many, aliphatic and aromatic mono- and di-isocyanates are a group of chemicals that have been used for a century to modify cellulose. Despite only being used recently with nanocellulose, they have shown great potential as surface modifiers and chemical linkers to graft certain functional chemicals and polymers onto the nanocellulose surface. This review discusses the modification of cellulose and nanocellulose using isocyanates including phenyl isocyanate (PI), octadecyl isocyanate (OI), toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate (HMDI), and their derivatives and polymers. It also presents the most commonly used nanocellulose modification strategies including their advantages and disadvantages. It finally discusses the challenges of using isocyanates, in general, for nanocellulose modification.

Carboxyl functionalized carbon incorporation of stacked ultrathin NiO nanosheets: topological construction and superior lithium storage

Nanoscale ◽  
2019 ◽  
Vol 11 (16) ◽  
pp. 7588-7594 ◽  
Author(s):  
Jiaxu Zhang ◽  
Wen Luo ◽  
Tengfei Xiong ◽  
Ruohan Yu ◽  
Peijie Wu ◽  
...  
Keyword(s):  
Surface Modification ◽  
Lithium Ion Batteries ◽  
Functional Groups ◽  
Anode Materials ◽  
Lithium Ion ◽  
Two Dimensional ◽  
Lithium Storage ◽  
Carbon Incorporation ◽  
Topological Construction ◽  
Nio Nanosheets

Two-dimensional (2D) nanostructure engineering and surface modification with functional groups are of great importance to anode materials for rechargeable lithium-ion batteries.

Surface Modification of a-C:H(N) Thin Films by Plasma Treatment

2005 ◽  
Vol 11 (S03) ◽  
pp. 162-165 ◽  
Author(s):  
L. von Mühlen ◽  
R. A. Simao ◽  
C. A. Achete
Keyword(s):  
Thin Films ◽  
Surface Roughness ◽  
Optical Properties ◽  
Surface Modification ◽  
Surface Chemistry ◽  
Plasma Treatment ◽  
Surface Properties ◽  
Functional Groups ◽  
Material Properties ◽  
Modify Surface

Surface chemistry and topography of materials are generally preponderant factors in a series of material properties, such as adhesion, wettability, friction and optical properties [1]. Wettability of films, for example, can be altered significantly by modifying its surface roughness and also by incorporating functional groups. Plasma treatment is a powerful and versatile way to modify surface properties of amorphous nitrogen-incorporated carbon thin films (a-C:H(N)) and obtain materials with improved properties, once it is possible to modify the surfaces in a controlled way by specific settings of plasma conditions. [2 - 4]

Introducing multiple bio-functional groups on the poly(ether sulfone) membrane substrate to fabricate an effective antithrombotic bio-interface

2017 ◽  
Vol 5 (12) ◽  
pp. 2416-2426 ◽  
Author(s):  
Lingren Wang ◽  
Min He ◽  
Tao Gong ◽  
Xiang Zhang ◽  
Lincai Zhang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Functional Groups ◽  
Effect Of Surface

Multiple bio-functional groups and their biocompatible effect of surface modification.

Surface modification of SiO2 nanoparticles and its impact on the properties of PES-based hollow fiber membrane

RSC Advances ◽  
2015 ◽  
Vol 5 (72) ◽  
pp. 58644-58654 ◽  
Author(s):  
Mimi Suliza Muhamad ◽  
Mohd Razman Salim ◽  
Woei-Jye Lau
Keyword(s):  
Surface Modification ◽  
Functional Groups ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Sio2 Nanoparticles ◽  
Ftir Spectra ◽  
Fiber Membrane ◽  
Surface Modified

The FTIR spectra for SiO2-SDS nanoparticles clearly show the detection of SDS functional groups in surface-modified SiO2 and confirm the successful modification of the nanoparticles surface.

MILLING EFFECT AND ENHANCED LUMINESCENCE PROPERTY OF BAM NANOPHOSPHOR VIA SURFACE MODIFICATIONS

NANO ◽  
2009 ◽  
Vol 04 (06) ◽  
pp. 367-370 ◽  
Author(s):  
A. DULDA ◽  
D. S. JO ◽  
M. TAKAKI ◽  
D. H. YOON
Keyword(s):  
Surface Modification ◽  
Functional Groups ◽  
Luminescence Intensity ◽  
Surface Defects ◽  
Solution Treatment ◽  
Efficiency Improvement ◽  
Luminescence Efficiency ◽  
Treated Sample ◽  
Dispersion Agent ◽  
Organic Functional Groups

Surface modification of luminescent nanomaterials has attracted considerable technological interest. With decreasing particle size, the passivation of surface defects is of vital importance. This paper reports the effect of an alkali (KOH) solution treatment and organic functional groups on the luminescence efficiency and particle dispersibility. Fourier transform infrared spectroscopy provided clear evidence of surface modification with organic functional groups from the C=O , C–H , and C–O stretching modes at 1740, 1365, and 1218 cm-1. The KOH-treated sample showed a 40% increase in luminescence intensity, whereas 87% increase in luminescence intensity was obtained from the dispersion-agent-containing sample. To the best of our knowledge, this is the highest efficiency improvement for sub-micrometer-sized BAM: Eu2+ phosphors reported thus far.

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