File Name: biodegradable polymers in clinical use and clinical development .zip
Biodegradable polymers are a special class of polymer that breaks down after its intended purpose by bacterial decomposition process to result in natural byproducts such as gases CO 2 , N 2 , water , biomass , and inorganic salts. Their properties and breakdown mechanism are determined by their exact structure.
- Current development of biodegradable polymeric materials for biomedical applications
- Biodegradable Polymers for Industrial Applications
- Biodegradable Polymers for Medical Applications
Citas duplicadas. Citas combinadas.
Current development of biodegradable polymeric materials for biomedical applications
The vast majority of plastic products are made from petroleum-based synthetic polymers that do not degrade in a landfill or in a compost-like environment. Therefore, the disposal of these products poses a serious environmental problem. Biodegradable polymers for industrial applications introduces the subject by outlining the classification and development of biodegradable polymers. Materials available for the production of biodegradable polymers are explored. Polymers derived from sugars, natural fibres, renewable forest resources, poly lactic acid and protein-nanoparticle composites are looked at in detail in this section. The properties and mechanisms of degradation are looked at, prefacing the subject with a chapter on current standards. The final part explores opportunities for industrial applications, with chapters on packing, agriculture and biodegradable polycaprolactone foams in supercritical carbon dioxide.
Research on hydrogels has been geared toward biomedical applications from the beginning due to their relatively high biocompatibility. Initially only the hydrophilic nature and the large swelling properties of hydrogels was explored. Continued research on hydrogels has resulted in the development of new types of hydrogels, such as environment-sensitive hydrogels, thermoplastic hydrogels, hydrogel foams, and sol-gel phase-reversible hydrogels. Application of hydrogels ranges from biomedical devices to solute separation. Examples of hydrogel applications in pharmaceutics, biomaterials, and biotechnology are briefly described. A novel hydrogel which undergoes sol-gel phase transformation by changes in glucose concentration of the surrounding medium was synthesized.
This can be attributed to numerous factors such as chemical, mechanical and physiochemical properties of BPs, their improved processibility, functionality and sensitivity towards stimuli. Recent literature relevant to this study has been cited and their developing trends and challenges of BPs have also been discussed. Petroleum-based polymers commonly known as Plastics have been used since a long time due to its handiness, durability, flexibility and less reactivity towards the water and other chemicals, also these products are easy and cheaper to process. These properties allow synthetic plastics to be broadly used in many fields 1. The demand for plastic is boosting day by day, the production of plastic was between million tons in , exceeded million tons in
Biodegradable Polymers for Industrial Applications
Metrics details. Polymeric drug delivery systems have been achieved great development in the last two decades. Polymeric drug delivery has defined as a formulation or a device that enables the introduction of a therapeutic substance into the body. Biodegradable and bio-reducible polymers make the magic possible choice for lot of new drug delivery systems. The future prospects of the research for practical applications has required for the development in the field.
Biodegradable Polymers for Medical Applications
Modern medicine would be impossible without the application of various natural or artificial materials. Among them, polymers, both natural and synthetic, play a key role. The purpose of some of them is to stay in the body forever, but others are only intended for temporary use, and, historically, these had to be removed or excreted from the body.
И он задвигал крошечными металлическими контактами на кончиках пальцев, стремясь как можно быстрее сообщить американским заказчикам хорошую новость. Скоро, подумал он, совсем. Как хищник, идущий по следам жертвы, Халохот отступил в заднюю часть собора, а оттуда пошел на сближение - прямо по центральному проходу.
Вы звонили Стратмору. - Да. Он уверяет, что в шифровалке полный порядок. Сказал, что ТРАНСТЕКСТ работает в обычном темпе. Что у нас неверные данные.
Профессор вертел кольцо в пальцах и изучал надпись. - Читайте медленно и точно! - приказал Джабба. - Одна неточность, и все мы погибли.