WebHDPE is High Density Poly(Ethene) and has a higher crystallinity and a higher melting point than L D PE ( Low Density Poly ( Ethene ). HD PE is stronger and stiffer than L D PE . WebJan 31, 2024 · The degree of polymerization can be calculated by using the following relationship if a molecular weight of a polymer molecule is known. M= (DP) M0. M is the molecular weight of the polymer, DP is the degree of polymerization and the M 0 is the formula weight of the repeating unit. Ex: calculate the degree of polymerization of a …
Show the repeating unit that would be obtained in the …
WebIn polymer chemistry, a repeat unit or repeating unit (or mer) is a part of a polymer whose repetition would produce the complete polymer chain (except for the end-groups) by … WebPolychlorotrifluoroethylene (PCTFE or PTFCE) is a thermoplastic chlorofluoropolymer with the molecular formula (CF 2 CClF) n, where n is the number of monomer units in the polymer molecule. It is similar to polytetrafluoroethene (PTFE), except that it is a homopolymer of the monomer chlorotrifluoroethylene (CTFE) instead of tetrafluoroethene. It has the lowest … can antibiotics raise my blood pressure
How do you find the repeating unit of a polymer? - Studybuff
Webpolymerised to form the polymer known as PGA. PGA is used in surgical sutures (stitches). (i) Draw the repeating unit of PGA. (1) (ii) Production of PGA occurs via a cyclic compound. Two HOCH 2 COOH molecules react together to form the cyclic compound and two molecules of water. Draw the structure of this cyclic compound. (1) WebDec 7, 2024 · Since polymers are made by linking together many identical small molecules, there are repeating units in polymers. Here’s an example, polyvinyl chloride, in which the repeating unit is -CH2-CHCl-. In poly (vinyl chloride) the repeating unit comes directly from the end-to-end linking of many vinyl chloride molecules. WebRepeating units of poly-1,3-butadiene and polyisoprene. Natural rubber is a polymer of isoprene- most often cis-l,4-polyiso-prene - with a molecular weight of 100,000 to … can antibiotics really help eczema