"Foreword Readers of this book are in for a joyful experience! The authors of Chemistry of Modern Papermaking clearly have a profound enthusiasm for their subject matter, of which they care about deeply and want to share with their audience. Though there have been other textbooks dealing with the chemistry of papermaking, this book achieves an important new milestone in bringing together a wealth of insight concerning the chemical strategies that can have practical use in a state-of-the-art papermaking facility. Never before has a textbook compiled, carefully digested, and lucidly explained such a deep collection of details from both the patent and scientific literature. This synthesis is achieved not only through diligent work, but also reflects the years of industrial experience of the authors. Readers will also quickly come to respect Hagiopol and Johnston's gifts for teaching--especially the teaching of chemistry. As the authors themselves state more effectively in their book, one of the important principles of the chemistry of papermaking is that of "leveraging." With typically only about 3% of the mass of a paper product invested in water-soluble chemicals, the papermaker can achieve dramatic effects. On the one hand, he or she can greatly increase the efficiency of the process--including the production rate. For instance, by the use of retention aids, the efficiency of retaining fine particles in the paper can be improved. Not only does this help to minimize wasted materials, but it also helps papermakers to avoid significant discharges of waterborne substances as liquid effluent. An optimized wet-end chemistry program can also achieve higher rates of water removal, which often allows papermakers to speed up the process"--Provided by publisher.