Surgery

Rotator cuff regeneration: Potential breakthrough treatment

A new way to regenerate muscle could help repair the damaged shoulders of millions of people every year. The technique uses advanced materials to encourage muscle growth in rotator cuff muscles. UConn Health researchers reported ...

Ophthalmology

A novel therapy using unique thermogel prevents retinal scarring

Singapore scientists have developed a bio-functional thermogel, a type of synthetic polymer, to prevent retinal scarring caused by failed retinal detachment repair surgery. Proliferative vitreoretinopathy (PVR) occurs when ...

Biomedical technology

New filling for bone defects encourages tissue regeneration

A combination of a synthetic material with natural bone fills bone defects and encourages tissue regeneration, with potential for use during surgical procedures. The research was carried out at the Tohoku University Graduate ...

Surgery

Developing bioactive coatings for better orthopaedic implants

Bioactive coatings play a vital role in the success of implants such as those for knees or hips, because their properties induce a biological response that is good for the health. Ph.D. student Imran Deen and Professor Federico ...

page 1 from 12

Polymer

A polymer (from Greek πολύ-ς /po΄li-s/ much, many and μέρος /΄meros/ part) is a large molecule (macromolecule) composed of repeating structural units typically connected by covalent chemical bonds. While polymer in popular usage suggests plastic, the term actually refers to a large class of natural and synthetic materials with a variety of properties.

Due to the extraordinary range of properties accessible in polymeric materials , they have come to play an essential and ubiquitous role in everyday life - from plastics and elastomers on the one hand to natural biopolymers such as DNA and proteins that are essential for life on the other. A simple example is polyethylene, whose repeating unit is based on ethylene (IUPAC name ethene) monomer. Most commonly, as in this example, the continuously linked backbone of a polymer consists mainly of carbon atoms. However, other structures do exist; for example, elements such as silicon form familiar materials such as silicones, examples being silly putty and waterproof plumbing sealant. The backbone of DNA is in fact based on a phosphodiester bond, and repeating units of polysaccharides (e.g. cellulose) are joined together by glycosidic bonds via oxygen atoms.

Natural polymeric materials such as shellac, amber, and natural rubber have been in use for centuries. Biopolymers such as proteins and nucleic acids play crucial roles in biological processes. A variety of other natural polymers exist, such as cellulose, which is the main constituent of wood and paper.

The list of synthetic polymers includes synthetic rubber, Bakelite, neoprene, nylon, PVC, polystyrene, polyacrylonitrile, PVB, silicone, and many more.

Polymers are studied in the fields of polymer chemistry, polymer physics, and polymer science.

This text uses material from Wikipedia, licensed under CC BY-SA