Wood as a Chemical Engineering Material

Silica sol as grouting material: a physio-chemical analysis

At present there is a pressing need to find an environmentally friendly grouting material for the construction of tunnels. Silica nanoparticles hold great potential of replacing the organic molecule based grouting materials currently used for this purpose. Chemically, silica nanoparticles are similar to natural silicates which are essential components of rocks and soil. Moreover, suspensions of...

Helical Rosette Nanotubes as a Biomimetic Tissue Engineering Scaffold Material

With the rapid development of orthopedic implant technology, various bone implant surgeries and procedures (such as bone fractures, repairing defects, and hip and knee replacements) are routinely performed. Although these surgeries are usually successful operations for up to 15 years, implant failure due to loosening of the prostheses does occur for active or heavy patients. Other patients rece...

Flow sheeting software as a tool when teaching Chemical Engineering

The Chemical Composition of Wood

This chapter includes overall chemical composition of wood, methods of analysis, structure of hemicellulose components and degree of polymerization of carbohydrates. Tables of data are compiled for woods of several countries. Components include: cellulose (Cross and Bevan, holo-, and alpha-), lignin, pentosans, and ash. Solubilities in 1% sodium hydroxide, hot water, ethanol/ benzene, and ether...

Chemical Preparation of Beta Calcium Sulfate Hemihydrate Granules with a Special Particle Size as Bone Graft Material

Introduction: Beta calcium sulfate hemihydrate (BCSH), which is commonly known as “Gypsum plaster” has long been used as bone graft material because of its excellent biocompatibility and the ability for bone regeneration. Several methods have been used for the preparation of BCSH, including heat treatment of calcium sulfate dihydrate with water, application of inorganic acids or condensed inorg...