Surface Characterization of Mechanical Pulp Fibers by Contact Angle Measurement, Polyelectrolyte Adsorption, XPS, and AFM

2009 ◽  
pp. 36-59 ◽  
Author(s):  
Per Stenius ◽  
Krista Koljonen
Keyword(s):  
Contact Angle ◽  
Surface Characterization ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Pulp Fibers ◽  
Polyelectrolyte Adsorption ◽  
Mechanical Pulp

scholarly journals Dynamics on Molecular Films. Surface Characterization of Monolayers by the Wilhelmy-type Dynamic Contact Angle Measurement.

Hyomen Kagaku ◽  
2000 ◽  
Vol 21 (10) ◽  
pp. 643-650
Author(s):  
Koji ABE ◽  
Satomi OHNISHI ◽  
Haruhisa AKIYAMA ◽  
Hiroshi TAKIGUCHI ◽  
Kaoru TAMADA
Keyword(s):  
Contact Angle ◽  
Surface Characterization ◽  
Dynamic Contact Angle ◽  
Dynamic Contact ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Molecular Films

Surface characterization of poly(styrene-co- fluoroalkylfumarate): XPS and contact angle measurement study

1999 ◽  
Vol 71 (7) ◽  
pp. 1049-1054 ◽  
Author(s):  
Shinya Kato ◽  
Yasuhiro Ueno ◽  
Akio Kishida ◽  
Tsuyoshi Miyazaki ◽  
Takeo Matsumoto ◽  
...  
Keyword(s):  
Contact Angle ◽  
Surface Characterization ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Measurement Study

scholarly journals Contact Angle Measurement for The Surface Characterization of Solids

2011 ◽  
Vol 2 ◽  
pp. 1-4 ◽  
Author(s):  
D. P. Subedi
Keyword(s):  
Contact Angle ◽  
Surface Energy ◽  
Surface Characterization ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Liquid Model ◽  
Convenient Approach ◽  
Young's Equation

This paper reports a description of the theory of contact angle measurement and its use for the determination of surface energy of solids. The main objective of the work is to present a convenient approach to explain wetting phenomenon using contact angle theory. A brief review of Young’s equation and Young- Dupre equation is also presented followed by an extended Fowke’s equation widely used for the calculation of surface energy of solids. The two liquid model has been applied to determine the surface energy of polycarbonate and low density polyethylene.Key words: Contact angle; Surface energy; Surface characterization; Wettability; Young’s equation; Fowke’s modelThe Himalayan Physics Vol.2, No.2, May, 2011Page:1-4Uploaded Date: 31 July, 2011

Physicochemical characterization of actinomycetes isolated from decayed cedar wood: contact angle measurement

2014 ◽  
Vol 28 (20) ◽  
pp. 2046-2053 ◽  
Author(s):  
Hajar Maataoui ◽  
Hassan Barkai ◽  
Moulay Sadiki ◽  
Abdellatif Haggoud ◽  
Saad Ibnsouda Koraichi ◽  
...  
Keyword(s):  
Contact Angle ◽  
Physicochemical Characterization ◽  
Contact Angle Measurement ◽  
Angle Measurement

SYNTHESIS AND CHARACTERIZATION OF SUPERHYDROPHOBIC ZnO HIERARCHICAL STRUCTURES

NANO ◽  
2011 ◽  
Vol 06 (03) ◽  
pp. 265-269 ◽  
Author(s):  
QUNBING ZHANG ◽  
SHIHE CAO ◽  
JUN WANG
Keyword(s):  
Contact Angle ◽  
Hydrothermal Process ◽  
Hierarchical Structures ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Zno Films ◽  
Water Contact ◽  
Simple Method ◽  
Microscopy Images

ZnO films with well-aligned hierarchical structures have been successfully synthesized at moderate temperatures using a simple catalyst-free hydrothermal process. The synthesized ZnO films are found to be single-phase, with a hexagonal wurtzite-type structure. Scanning electron microscopy images show that the well-aligned hierarchical structures are assembled with interlaced parallel sheets grown on the (400) silica surface. The water contact angle measurement indicates that the water on the films has a contact angle of about 156.3°. This clearly demonstrates that the ZnO films synthesized by this simple method have superhydrophobic properties and may be important for applications in self-cleaning surfaces, biology, and so on.

scholarly journals The influence of alumino-silicate matrix composition on surface hydrophobic properties

2019 ◽  
Vol 51 (2) ◽  
pp. 163-173 ◽  
Author(s):  
Ljiljana Kljajevic ◽  
Zuzana Melichova ◽  
Danilo Kisic ◽  
Milos Nenadovic ◽  
Bratislav Todorovic ◽  
...  
Keyword(s):  
Contact Angle ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Matrix Composition ◽  
Homogeneous Surface ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Sem Micrograph ◽  
Alumino Silicate

The purpose of this investigation is to investigate the hydrophobicity of geopolymers, new alumino-silicate materials and the influence of Si/Al ratio on their surface properties. Contact angle measurement (CAM) as reliable indicator of hydrophobicity was determined for synthesized geopolymers using water and ethylene-glycol as reference liquids. Geopolymers were synthesized from various precursors: kaolin, bentonite and diatomite. Characterization of phase structure and microstructure was performed by XRD, FTIR, SEM/EDX methods. Contact angle measurements confirmed that the geopolymers synthesized from metakaolin are the most porous, which can be explained by the smallest Si/Al ratio. The maximum value of contact angle and free surface energy (110.2 mJ/m2) has been achieved for geopolymer synthesized by diatoms (GPMD). SEM micrograph of GPMD shows a homogeneous surface with some longitudinal cavities in the gel and is significantly different from the micrographs of other two geopolymer samples, GPMB and GPMK.

Surface Chemical Modification and Characterization of Nano Fe2O3

2013 ◽  
Vol 345 ◽  
pp. 180-183
Author(s):  
Yan Liu ◽  
He Yi Ge ◽  
Xiu Zhi Zhang ◽  
Shi Feng Huang ◽  
Xin Cheng
Keyword(s):  
Contact Angle ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Organic Polymer ◽  
X Ray Diffraction ◽  
The Matrix ◽  
Ft Ir ◽  
Acidic Conditions ◽  
Surface Chemical Modification

The surface of nanoFe2O3 was modified with silane coupling agent 3-(methacryloyloxy) propyltrimethoxysilane (KH-570) under acidic conditions in order to improve the dispersity of particles in organic polymer and to enhance the interfacial bonding with the matrix. Contact angle measurement, thermogravimetric analysis (TG), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) were adopted to characterize and analyze the unmodified and modified nanoFe2O3. Through TG curves, it was calculated that when the KH-570 content was 25%, the grafting rate of Fe2O3 reached a maximum value at 7.28%. The FT-IR and XRD results indicated that KH-570 successfully modified the nanoFe2O3 with its organic functional groups chemically bonded on the surface of nanoFe2O3 which contributed to prevent particles from conglomerating. The surface treatment of nanoFe2O3 had no significant effect on the nanoparticles crystalline form. Contact angle measurement investigated that the hydrophile of modified nanoFe2O3 was decreased.

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