CONTACT LENSES The book focuses on the chemistry and properties of contact lenses and their fabrication methods. With research & development continuing in the field, this comprehensive book takes a look at the last 10 years in terms of new materials, chemistry methods, applications, and fabrication techniques. New applications include drug delivery, lenses for augmented reality, electronic contact lenses, and wearable smart contact lenses. In addition, the book discusses simulation methods for contact lenses, such as ocular topography parameters, gas permeable lenses, and computerized videokeratography. On the fabrication front, several common fabrication methods for contact lenses are detailed, including the computer-aided contact lens design, methods for the fabrication of colored contact lenses, and the fabrication of decentered contact lenses. Special processes are reviewed, including, mold processes, reactive ion etching, electrospinning, and others. Also discussed are the properties of contact lenses and methods for the measurement. Many of the standard methods are discussed, but other issues are taken up too including a discussion on the assessment of cytotoxic effects, the Schirmer tear test, and others. The book concludes with a chapter detailing the possible medical problems related to contact lenses and how to avoid them. These include eye diseases, allergic and toxic reactions, as well as methods for medical treatment such as disinfection agents. Audience The book will be used by chemists, polymer scientists, ophthalmologists, engineers in the contact lens industry as well as polymer industries.

POLYMERS AND ADDITVES IN EXTREME ENVIRONMENTS Uniquely catalogs polymers and additives for uses in extreme applications such as in high or low pressure, high or low temperature, deep water and other special applications. The book includes chapters on aqueous environments including polymeric membranes for water purification and wastewater treatment; extreme pressure environments such as oils and lubricants for combustion engines as well as materials used for deep drilling such as surfactants, scale inhibitors, foaming agents, defoamers, propellants, fracturing fluids; extreme temperatures is subdivided in high and low temperature applications including gasketing materials, fuel tank sealants, expulsion bladders, fuel cell materials, and on the other hand, cold weather articles and thermoregulatory textiles; electrical applications include solar cell devices, triboelectric generators, fuel cell applications, electrochromic materials and batteries; medical applications include polymers for contact lenses, materials for tissue engineering, sophisticated drug delivery systems; aerospace applications include outer space applications such as low temperature and pressure, also cosmic rays, outgassing, and atomic erosion, as well as materials for electrostactic dissipative coatings and space suits; a final chapter detailing materials that are used in other extreme environments, such as adhesives, and polymeric concrete materials. Audience Materials and polymer scientists working in manufacturing and plastics, civil and mechanical engineers in various industries such as automotive, aircraft, space, marine and shipping, electronics, construction, electrical, etc. will find this book essential. The book will also serve the needs of engineers and specialists who have only a passing contact with polymers and additives in industrial setting need to know more.

Plastics, just like any other material, have experienced a rapid development over the last decade and it is vital for chemical engineers to have a single source documenting all these developments. Arranged according to the chemical constitution of polymers, this four-volume set reviews the developments that have taken place in the last decade, focusing on common types of polymers belonging to the class of water soluble polymers. It covers a wide range of applications including polyolefins, styrenics, water soluble polymers, polyether, polyesters, and nylon.