News tagged with polymer
A team of researchers led by a Boston University Biomedical Engineer has developed a new joint lubricant that could bring longer lasting relief to millions of osteoarthritis sufferers. The new synthetic polymer supplements ...
Arthritis & Rheumatism May 02, 2013 | 4 / 5 (1) | 0
(Medical Xpress)—One of the world's top selling drugs potentially also acts against the growth of new lymphatic vessels, with potential implications for cancer therapy. This surprising finding was brought ...
Cancer Sep 04, 2012 | 5 / 5 (2) | 0 |
Researchers at the Wyss Institute for Biologically Inspired Engineering at Harvard University have mimicked pulmonary edema in a microchip lined by living human cells, as reported today in the journal Science Tr ...
Medical research Nov 07, 2012 | 5 / 5 (3) | 0 |
(Medical Xpress) -- Pioneering work by a leading University of Nottingham scientist has helped reveal for the first time a vital process in the development of the early mammalian embryo.
Medical research Mar 02, 2012 | 5 / 5 (3) | 1 |
(Medical Xpress) -- University of Michigan researchers have proven that a special surface, free of biological contaminants, allows adult-derived stem cells to thrive and transform into multiple cell types. ...
Medical research May 23, 2012 | 5 / 5 (9) | 1 |
A new study demonstrates that mechanical forces affect the growth and remodeling of blood vessels during tissue regeneration and wound healing. The forces diminish or enhance the vascularization process and ...
Medical research Oct 24, 2011 | 5 / 5 (1) | 0 |
A new way to fight inflammation uses molecules called polymers to mop up the debris of damaged cells before the immune system becomes abnormally active, researchers at Duke University Medical Center report.
Inflammatory disorders Aug 15, 2011 | 4.8 / 5 (4) | 1 |
Building a tunnel made up of both hard and soft materials to guide the reconnection of severed nerve endings may be the first step toward helping patients who have suffered extensive nerve trauma regain feeling ...
Medical research Dec 17, 2012 | 5 / 5 (4) | 0 |
Scientists at the University of Glasgow are working to harness the regenerative power of stem cells to improve orthopaedic implant surgery.
Surgery Sep 03, 2012 | not rated yet | 0 |
In a London ceremony today, Wyss Founding Director Don Ingber, M.D., Ph.D., received the NC3Rs 3Rs Prize from the UK's National Centre for the Replacement, Refinement and Reduction of Animals in Research ...
Medical research Feb 26, 2013 | not rated yet | 0
Dartmouth researchers have taken an important step in the ongoing battle against secondhand tobacco smoke. They have pioneered the development of a breakthrough device that can immediately detect the presence ...
Health Mar 21, 2013 | not rated yet | 1 |
Compared with a bare-metal stent, the use of a stent with a biodegradable polymer that releases the drug biolimus resulted in a lower rate of major adverse cardiac events at 1 year among patients with ST-segment elevation ...
Cardiology Aug 21, 2012 | not rated yet | 0
Combined, complimentary therapies have the ability to maximize the benefits of neural stem cell (NSC) transplantation for spinal cord repair in rat models, according to a study carried out by a team of Korean researchers ...
Medical research Apr 17, 2012 | 3.7 / 5 (3) | 0
Engineers at the University of Sheffield have developed a method of assisting nerves damaged by traumatic accidents to repair naturally, which could improve the chances of restoring sensation and movement in injured limbs.
Medical research Apr 23, 2012 | not rated yet | 0 |
Kyle Figuray eyed the reflection of his ear with intense fascination.
Medical research Sep 30, 2011 | 5 / 5 (2) | 0
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.
For more information about Polymer, read the full article at
This text uses material from Wikipedia and is available under the GNU Free Documentation License.