What's the difference between plastic and polymer?

Plastic


Definition:

  • (a.) Having the power to give form or fashion to a mass of matter; as, the plastic hand of the Creator.
  • (a.) Capable of being molded, formed, or modeled, as clay or plaster; -- used also figuratively; as, the plastic mind of a child.
  • (a.) Pertaining or appropriate to, or characteristic of, molding or modeling; produced by, or appearing as if produced by, molding or modeling; -- said of sculpture and the kindred arts, in distinction from painting and the graphic arts.

Example Sentences:

  • (1) The various evocational changes appear to form sets of interconnected systems and this complex network seems to embody some plasticity since it has been possible to suppress experimentally some of the most universal evocational events or alter their temporal order without impairing evocation itself.
  • (2) With the exception of PMMA and PTFE, all plastics leave a very heavy tar- and soot deposit after burning.
  • (3) The consequences of proved hypersensitivity in patients with metal-to-plastic prostheses, either present prior to insertion of the prosthesis or evoked by the implant material, are not known.
  • (4) We found that when neutrophils were allowed to settle into protein-coated surfaces the amount of O2- they generated varied with the nature of the protein: IgG greater than bovine serum albumin greater than plastic greater than gelatin greater than serum greater than collagen.
  • (5) FGF did not influence P production, while EGF clearly increased basal P production of the cells cultured on plastic.
  • (6) Alveolar macrophages (greater than 97% esterase positive) were isolated form bronchoalveolar lavage fluids by adherence onto plastic.
  • (7) During collection, the rat was restrained in a plastic holder where it was free to eat.
  • (8) The agency, which works to reduce food waste and plastic bag use, has already been gutted , with its budget reduced to £17.9m in 2014, down from £37.7m in 2011.
  • (9) Radiological examination provides more accurate indications for plastic surgery of the pelvic floor, influences the operative procedures and permits better evaluation of operative results.
  • (10) Unlike cells grown on plastic, RME cells grown on type I collagen were readily subculturable and serial subculture resulted in the cells undergoing 15-20 population doublings (5-6 passages) before exhibiting any loss of growth potential.
  • (11) In 36 patients plastic reconstruction of the urinary bladder, sphincter and urethra was performed with local tissues after the Young technic in the G. A. Bairov modification.
  • (12) This result contraindicates a general permissive-requisite role for forebrain NE for the mammalian brain's plasticity during its critical periods.
  • (13) Markram's papers on synaptic plasticity and the microcircuitry of the neural cortex were enough to earn him a full professorship at the age of 40, but his discoveries left him restless and dissatisfied.
  • (14) Thus functional plasticity in response to early experience appears to be a fundamental aspect of cortical development.
  • (15) A metal-plastic prosthesis was tested in positions and with forces considered applicable to arthritics.
  • (16) The surgeon must have an exact idea of this canal before undertaking operation for plastics of the hernial defect.
  • (17) HVc and RA grow during the subsong and plastic song periods of song development.
  • (18) Asymmetries occur less often whilst using the low-cervical-pull according to Sander, due to the reduced friction between the two plastic parts of this headgear system.
  • (19) This paper reports the findings of a national survey of Medical Schools and Plastic Surgery Units.
  • (20) Plastic surgery seems to be successful in mitral valve lesions, whereas lesions of the aortic valve are such that valve replacement is required.

Polymer


Definition:

  • (n.) Any one of two or more substances related to each other by polymerism; specifically, a substance produced from another substance by chemical polymerization.

Example Sentences:

  • (1) Five days later, the animals were randomly assigned to one of four treatment groups: Group 1 received intracranial implantation of controlled-release polymers containing dexamethasone; Group 2 received intraperitoneal implantation of controlled-release polymers containing dexamethasone; Group 3 received serial intraperitoneal injections of dexamethasone; and Group 4 received sham treatment.
  • (2) In spite of important differences in size, chemical composition, polymer density, and configuration, biological macromolecules indeed manifest some of the essential physical-chemical properties of gels.
  • (3) The acetonitrile extract is concentrated and analyzed by HPLC, using a new polymer-based column, and detected by UV spectroscopy at 270 nm.
  • (4) These results suggest that glomerular IgA are IgA polymers and decreased hepatic clearance of hepatic IgA polymers may be responsible for the glomerular deposition of IgA.
  • (5) A method for the introduction of side chains containing isonitrile (isocyanide, functional group) on the backbone of polysaccharides and other hydroxylic polymers was developed.
  • (6) He knows polymer notes from travels in Australia, where they were first introduced in 1988, and he wants Britain to "move with the times" too.
  • (7) Poly(ortho ester) bioerodible polymers are suitable materials for the topical administration of a wide variety of therapeutic agents; varying the nature and amounts of excipients physically incorporated into the polymer will vary the erosion rates from a few hours to many months.
  • (8) By performing countercurrent distribution in the presence of a polymer-ligand, the protein that binds the polymer-ligand can be separated from a heterogenous mixture.
  • (9) Pulse labeling of the polymer with [2-3H]adenosine was also maximal at the same time points.
  • (10) Charged polymers, known to alter cell surface characteristics, reversibly inhibit the intercellular communication required in kidney tubule induction.
  • (11) A novel type of ion exchanger was prepared by multipoint covalent binding of polystyrene chains onto the surface of porous silica followed by polymer-analogous modification of the bonded layer.
  • (12) Another 52 received a 100-g (nonfasting) glucose polymer screening test followed by a 100-g glucose polymer tolerance test.
  • (13) The important role of the exocellular polymers for the structure, size and density of flocs can be well illustrated.
  • (14) A small number of children with protracted diarrhoea, who have severe mucosal injury may not be able to handle even starch and may require diets based on short chain glucose polymers.
  • (15) Rather, assembly of sIgM into polymers and their subsequent secretion are prevented in B lymphocytes by preceding targeting of monomeric sIgM to degradation.
  • (16) The neutral polymer was devoid of type 6 activity although it was serologically active.
  • (17) The tissue reaction was more severe for polymers having a higher rate of degradation.
  • (18) Control experiments with other constructs (e.g., allopurinol riboside linked to the mannose-free polymer) confirmed that the enhancement of activity was indeed achieved by means of the mannose homing device.
  • (19) Of the tested polymers, only polyvinyl methylacetamide and dextran inhibit a decrease in the level of mitochondrial enzyme activity which develops with administration of endotoxin.
  • (20) At different degrees of DNA damage, the average length of the poly-ADP-ribose chain did not practically alter, thus suggesting the increase in the number of polymer binding sites in the histones.