A polymer blend is a mixture of two or more different species of polymer. From a thermodynamic point of view, most polymer pairs are immiscible. The inherent immiscibility and in number of cases, the large interfacial tension make it difficult to obtain a fine dispersion of the blend components during melt mixing, and under quiescent conditions, it drives phase coarsening phenomena such as coalescence. Furthermore, most immiscible polymer blends suffer from a poor interfacial adhesion which causes inferior mechanical properties in the solid state. To overcome these short comings and to obtain...

Most polymers suffer from certain problems during processing such as energy consumption and low flow rate. In addition, the polymeric products do not degrade easily in natural environment after being used. To overcome these problems polymeric material can be blended with other polymers that have the ability to improve the processability and biodegradation. This book contains: the preparation of four novel hyperbranched polyester polymers (HBPEs), by the preparation of the starting material B3 monomer and then mixing it with the four other types of materials as A2 monomer, using the...

In light of global environmental challenges and the growing need for clean and sustainable energy sources, this book aims to shed light on one of the most significant scientific and economic transformations of our modern era: renewable energy, with a particular focus on solar energy and the role of polymers in advancing its technologies. The book is divided into three interrelated chapters , The first one presents an introduction to renewable energy, its history, origins, and importance. The second chapter explores the different types of renewable energy sources, providing a detailed...

À la lumière des défis environnementaux mondiaux et du besoin croissant de sources d'énergie propres et durables, ce livre vise à faire la lumière sur l'une des transformations scientifiques et économiques les plus significatives de notre ère moderne : l'énergie renouvelable, avec un accent particulier sur l'énergie solaire et le rôle des polymères dans l'avancement de ses technologies. Le livre est divisé en trois chapitres interdépendants. Le premier chapitre présente une introduction aux énergies renouvelables, leur histoire, leurs origines et leur importance. Le deuxième...

Angesichts der globalen ökologischen Herausforderungen und des wachsenden Bedarfs an sauberen und nachhaltigen Energiequellen soll dieses Buch einen der bedeutendsten wissenschaftlichen und wirtschaftlichen Umbrüche unserer Zeit beleuchten: die erneuerbaren Energien, wobei der Schwerpunkt auf der Solarenergie und der Rolle der Polymere bei der Weiterentwicklung ihrer Technologien liegt. Das erste Kapitel enthält eine Einführung in die erneuerbaren Energien, ihre Geschichte, ihre Ursprünge und ihre Bedeutung. Das zweite Kapitel befasst sich mit den verschiedenen Arten von erneuerbaren...