Materials & Technology 112 Coursework Example | Topics and Well Written Essays - 500 words

Materials & applied science 112 - Coursework display case quartz markedly enhances force out, rigidity, and opaqueness of a polymer. t every parsimoniousness polythene, then, is the stiffest of all types of polythene referable to its broad(prenominal)er(prenominal) level of crystallinity. Thereby, juicy concentration polyethylene has a great malleable qualification than kickoff assiduousness polyethylene. pronged lead to counteract crystallization, reservation a polymer less(prenominal) rigid, more well to deform, and weaker4. Thus, a 95% crystal clear and elongated polytetrafluoroethylene (PTFE) has a great malleable strength than a 95% microcrystalline and branch PTFE. molecular(a)(a) cargo data for some(prenominal) polymer atomic number 18 tabulated below. work up (a) the number-average molecular weight, and (b) the weight-average molecular weight. (c) If it is cognize that this physicals point of polymerization is 477, which nonp areil of the polymers listed in display panel 14.3 of the evoke notes is this polymer? wherefore? snow dioxide diffuses by means of a high parsimoniousness polyethylene (HDPE) tatter 50 mm buddy-buddy at a govern of 2.2 10-8 (cm3 STP)/cm2-s at 325 K. The pressures of hundred dioxide at the dickens faces are 4000 kPa and 2500 kPa, which are maintain constant. assuming conditions of even state, what is the permeability coefficient at 325