Modification of Chinese Fir with Alkyl Ketene Dimer (AKD): Processing and Characterization

نویسندگان

  • Zengqian Shi
  • Feng Fu
  • Siqun Wang
  • Sheng He
  • Rui Yang
چکیده

A process for the chemical modification of Chinese fir with alkyl ketene dimer (AKD) was studied. The hydrophobicity of the resulting products was evaluated by characterization of the equilibrium moisture content, water-surface contact angle, water absorption coefficient, and antiswelling efficiency. The results indicated that when 5% AKD solution was used, the modified wood generally showed good hydrophobicity and improved dimensional stability. The result of boiling water and hexane extraction tests showed that the modified fir possessed very stable hydrophobicity.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Simple and Environmentally Friendly Fabrication of Superhydrophobic Alkyl Ketene Dimer Coated MALDI Concentration Plates

Here we present a method to manufacture peptide-concentrating MALDI-plates with alkyl ketene dimer (AKD) as a new superhydrophobic coating. The fabrication of the hydrophobic plates included application of AKD by airbrush, and negative contact printing to generate the concentration sites. Deposited sample droplets were contained within the prestructured sites, and self-adjusted onto the site if...

متن کامل

Akd and Asa Model Surfaces: Preparation and Characterization

Model surfaces of alkyl ketene dimer (AKD) and alkenyl succinic anhydride (ASA) were prepared by casting and spin-coating methods. The surface chemical composition and surface topography were investigated by XPS, ellipsometry, AFM and contact angle studies. Spin-coating resulted in layered structure of AKD and ASA surfaces; the molecular layer thickness of both AKD and ASA was found to be ca. 2...

متن کامل

Properties of Superhydrophobic Surfaces made by RESS Technique

The properties of superhydrophobic [1, 2] surfaces produced by Rapid Expansion of Supercritical Solvent (RESS) were studied. These surfaces were produced on paper surfaces by spraying alkyl ketene dimer (AKD, a wax commonly used in paper industry) dissolved in SC-CO2 through a nozzle onto a moving paper substrate in ambient conditions [3, 4]. Pressure and temperature of the SC-CO2 were optimize...

متن کامل

Effect of Particle Size Distribution of Lime Sludge on the Hydrophobicity of Paper

Precipitated calcium carbonate (PCC) is a filler that is widely used for papermaking, and lime sludge is a special type of PCC recovered from the black liquor from kraft pulping. There has been some concern that lime sludge may interfere with the development of paper’s hydrophobicity in comparison with commercial PCC and ground calcium carbonate (GCC) due to the presence of impurities when alky...

متن کامل

High-pressure Optical Cell for in Situ Raman Spectroscopy

Raman spectroscopy has been linked to a high-pressure optical cell for the in situ study of supercritical carbon dioxide (SC-CO2)-solute interactions. The body of the cell is made of a stainless steel cylinder enclosing a volumetric capacity of 24 mL, allowing optical access through sapphire windows on both ends. An argon ion laser was used for the excitation and Raman spectra were collected in...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2012