High-performance polymer matrix composites, particularly those for aerospace applications, are designed to withstand high thermal and aerodynamic stresses. This calls for matrix resins with superior thermal and thermo-mechanical properties. Among the diverse thermoset resins, bismaleimide resins stand out as a class of high-performance, addition-curable polyimide resins with excellent thermal, physical, and thermo-mechanical properties. However, their inherent limitations (including brittleness and poor processability) are impediments for their wide acceptability, thus necessitating their structural modification, co-reaction, or blending with suitable compounds to obviate these shortcomings. The widely accepted strategy for structural modification of BMI for conferring low temperature cure characteristics and enhanced toughness is to react it with allyl functional compounds. The allyl compounds react with maleimide groups via the Alder-ene reaction. This chapter deals with recent advances in this domain. It critically compiles the recent literature on the development of Alder-ene-type BMI polymers based on the reaction of various maleimides with allylated compounds. The various systems, their synthesis strategies, curing, and related properties are discussed. Intersystem comparisons have also been made. Where relevant, the chapter also discusses the cure characteristics of Alder-ene polymerization and further modifications of these resins with high-performance thermosets and thermoplastics. Recent studies on nano-modification of the Alder-ene polymer network have also been reviewed. It is concluded that this area is fast developing, and is an active area of research with the potential for producing advanced engineering plastics for applications ranging from adhesives to high-temperature and high-performance structural composites in the civil, defense, and aerospace industries.
This book not only introduces the chemistry and physicochemical properties of phthalonitrile resins, but also describes strategies for crosslinking and structural modification. The authors explore blends and composites of phthalonitriles with other high-performance polymers and give an outlook on the future of the field.
**Selected for Doody's Core Titles® 2024 in Dentistry** Learn and master a range of clinical techniques and achieve therapeutic goals with Newman and Carranza's Clinical Periodontology and Implantology, 14th Edition! Unmatched for its comprehensive approach, this resource provides detailed, up-to-date information on the etiology and pathogenesis of periodontal disease. Basic and advanced evidence-based information on the various treatment modalities employed in periodontics and implantology is presented in an easy-to-read format, with callout boxes throughout the text highlighting the clinical relevance of foundational basic science information. Full-color photos and radiographic images depict periodontal conditions and procedures, and the Atlas of Periodontal Pathology is one of the most comprehensive ever compiled in a periodontal textbook. Written by a team of leading experts led by Michael G. Newman, this text not only demonstrates how to perform periodontal procedures but explains the evidence supporting each treatment and provides knowledge on how to achieve the best possible outcomes of periodontal therapy and implant treatment. An eBook version is included with print purchase, providing access to all the text, figures, and references, plus the ability to search, customize content, make notes and highlights, and have content read aloud. The eBook version included with print purchase also includes Periopixel 3D color illustrations, a periodontal classification calculator and interactive learning tool, review questions, case studies, videos, 3D animations, and more! This edition features new chapters on Precision Medicine, Pocket Reduction Therapy, Periodontal Referral, and Digital Implant Workflows, as well as an updated glossary of terms linked to the eBook. It also features first-of-its-kind content on the effects of COVID-19 on treatment from key opinion leaders in this area. Case studies reflect the new format of the Integrated National Board Dental Exam (INBDE). - Full-color photos, illustrations, radiographs, animations, simulations, and videos demonstrate how to perform periodontal and implant procedures. - Current information on clinical techniques in periodontology and the latest advances in basic science. - Evidence-based treatment planning provides knowledge on how to achieve the best possible outcomes of periodontal therapy and implant treatment. - Extensive color atlas of periodontal pathology - Internationally known experts contribute chapters on their areas of specialty. - An eBook version is included with print purchase, providing access to all the text, figures, and references, plus the ability to search, customize content, make notes and highlights, and have content read aloud.
This book not only introduces the chemistry and physicochemical properties of phthalonitrile resins, but also describes strategies for crosslinking and structural modification. The authors explore blends and composites of phthalonitriles with other high-performance polymers and give an outlook on the future of the field.
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