The book "Composite heterogeneity of polymers" by the authors B. A. Myagchenkova and S. I. Frenkel is a unique study devoted to one of the most pressing topics in the field of materials science and polymer chemistry .. This publication will be an indispensable assistant for both undergraduate and graduate students, as well as for practitioners working in the field of development and application of polymer materials. In their book, the authors examine in detail the phenomenon of compositional heterogeneity, which plays a key role in the formation of polymer properties. Polymers are known to be widely used in a wide variety of industries from packaging to medicine, and their characteristics largely depend on the structure and composition of .. Myagchenkov and Frenkel offer the reader an in-depth analysis of how heterogeneity at the micro and macro levels affects the mechanical, thermal and other physicochemical properties of polymers. The book begins with the basics of polymer theory, which makes it accessible to readers just beginning to get acquainted with this topic. Next, the authors move on to more complex concepts, such as the effect of the distribution of fillers and additives on the properties of the final product. This allows not only to understand how to control the properties of polymers, but also how to predict their behavior in various operating conditions. The topics raised in the book cover a wide range of issues, including the interaction of polymers with the environment, methods of studying compositional heterogeneity, as well as modern approaches to the creation of new polymer compositions. The book also touches on aspects of ecology and sustainable development, making it particularly relevant in light of the contemporary challenges facing humanity. This work will be of interest not only to specialists in the field of polymer chemistry, but also to engineers, designers, as well as anyone interested in innovation in materials science. Students and graduate students of technical and natural sciences will find in it useful knowledge that will help in their studies and future careers. Practicing engineers will be able to use the knowledge gained to improve production technologies and develop new materials The style of the authors is distinguished by clarity and accessibility, which makes it easy to assimilate even the most complex concepts. In. A. Myagchenkov and S. I. Frenkel are well-known experts in the field of polymer science, and their previous works have already established themselves as authoritative sources of information. Their experience and in-depth knowledge in this field make this book an important contribution to the literature on polymer materials. If you are looking for books on polymer chemistry, materials science or just want to expand your knowledge of modern polymers, Composite Polymer Inhomogeneity will be an excellent choice. It will not only enrich your horizons, but also help you understand how to create more efficient and sustainable materials, which is especially important in a rapidly changing world. Thus, this publication is not just a scientific work, but a real find for everyone who is interested in polymer chemistry and its practical applications. It opens new horizons in the understanding of polymers and their properties, which makes it mandatory for reading.