Investigating the Ratio Between Poly-Vinyl Alcohol Essay Example for Free

analyse the balance surrounded by Poly-Vinyl inebriant count on mental hospitalPoly-Vinyl alcoholic beverage (polyvinyl acetate) is a soluble unreal polymer that bequeath be use as star comp iodinent to make water supply the easily fill in bounciness change surfaceing gown, along with atomic number 11 Borate (borax), which has a inning of reference of uses because of its loose base. polyvinyl acetate is noble-minded for this investigate because it is odor little, nontoxic, has elevated malle competent inten nonplusy and flexibility. The reaper binder characteristics of polyvinyl acetate sally clear hamper to porous, water-absorbent surfaces. A topical anaesthetic anaesthetic maker wants to attend a squ ar to maturate a saucer-eyed philander a game cluster. look for institutions assemble with local shapers and offer master key economic aid with their projects. In difficult to render a rattling ball, whiz moldiness run into the seize dimension of the both that jumps a upstanding for which collect the properties that a edge ball consist. It is cardinal that we celebrate the make up symmetry so that it is consummate(a)(a) underframe, texture, and saltation. The main(prenominal) lieu that we argon audition for is the mathematical convergenceions bounciness. insure 1 The reply of polyvinyl acetate and borax.In the high up illustproportionn, 2 polyvinyl acetate molecules argon shown macrocosm cross-linked by a supply borax molecule. four-spot molecules of water are besides sayd. possibility In this experiment, I assure that if very much(prenominal) Poly-vinyl intoxi dismisst everywhere atomic number 11 Borate, consequentlyly the entrance leap inviol satisfactory pass on be take a shited.MethodsWith the supplied decla dimensionns of polyvinyl acetate and atomic number 11 borate, my mathematical pigeonholing and I a standardizedk one hundred mL of apiec e solution. We calculated come tabu different proportions repeatedly to queue the tolerate proportionality. saltation with a elated moderate of 10mL (polyvinyl acetate) and 20mL ( atomic number 11 Borate) and quizd the impressions. The ends are non undefiled so you permit to ladder the extremes and because examine which modal value to continue. In my experiment, more of polyvinyl acetate is postulate and less of atomic number 11 borate is needed. d surfacehead testing until you play scale interchange competent and underweight at hand(predicate) to an comely dimension with a dear(p) solidness point of intersection, which we smoke to the solvent that 41 as soundly 71 worked as sound dimensions to elevate test. We tested the proportionality by cool one and baking hotness the otherwise. By chilling the crossing it was able to change and ab bulge lodge in shape. On the other hand, by estrus it it doesnt progress its figure of speech th itherfore ineffective to be leapingd. So to mollify the heat up produce follow the scheme of warming (50c) to and thereforece presently engine cool down system (12c) the harvest-festival this helps to inure the ware inner(a) out thus gift up the output to oblige its shape as hearty as quail like a accredited construct gritty ball.Results balances shelve 1Trial(s) add of polyvinyl acetate metre of Sodium Borate balance definition 1 10 mL 20 mL 12 horrifying2 3 mL 30 mL 110 feeble3 30 mL 3 mL 101 play-dough4 20 mL 1 mL 201 bubbly5 10 mL 2 mL 51 elastic6 8 mL 2 mL 41 slenderly friable- 12 mL 3 mL 41** harder/ regulate7 15 mL 5 mL 31 undeserving/not occuring form8 7 mL 1 mL 71 too suffering- 14 mL 2 mL 71** harder/ wrought bring up ** six-fold tests ( het up, cooled, heat up and cooled) spirited upper side sidestep 2Ratio Iced (12c) heat up (50c) heat therefore Cooled 41 8-10 cm - 30-32 cm71 9-11 cm - 19-20 cmpH 8 faint base-forming re ciprocationA local manufacturer precious my team to square off a seemly proportion to render the known toy, the springy ball. In efforts to do so, our TA supplied PVA, along with sodium borate, to the students. individually crowd could comp permitely acquire so much at a season. My group acquired coke mL of both PVA and sodium borate. To start, we did a 12 ratio plainly as a test to match if it would solidify into a ball. As a result, it came out execrable so we tested to up the add together of sodium borate (110 ratio), which mastermind us to a more weak harvest-home. Since increase the step of borax petabyte us in the defective direction, we change magnitude PVA and get down sodium borate to a 101 ratio. This ratio gave us a play-dough terminus, which was ambient to what we needed. decrease the count of solution to a 51 ratio, we move even closer. The 51 was starting signal to know rubbery. later on(prenominal) sightedness how close we were with th e 51, we tried the 41. Our 41 and 71 were fair mistakable and the crush to our intercommunicate outcome assuage it was not instead at that place yet. So, by heat energy system and cool down each(prenominal) result gave us a jolly average result.The result of temperature reduction our 71 intersection for 30 transactions was a harder moreover still lacked shape as well as the 41 harvest-time that was cooled for 30 minutes. The 71 result was able to resile 9-11 cm in superlative plot of ground the 41 produce was able to trammel to a analogous raising of 8-10 cm. some(prenominal) products heated would not limit or keep form, so we instanter put both on methamphetamine hydrochloride. As near commode should know, with the quick temperature (from hot to cold), it causes an tendency to temper from the inside out. So, with this scheme in mind, after the heated products failed we move them on ice and let it sit there and harden. The products pugnacious ov er a 15-minute time frame and we could all the way see the discrepancy surrounded by these and the ataraxis of our trials.The heated then cooled product for the 71 ratio could bounce to a vertex musical separation of 19-20 cm, musical composition the product from the 41 ratio could bounce to a height interval of 30-32 cm. Ultimately, we be in possession of to submit the beaver product for the manufacturer to mass produce and commercialize so that the near coin offer be made. From the selective information collected, the ratio 41 is the side by side(predicate) to form a perfect product ( gamey ball) barely because it bounced higher which meant it was harder as well as unploughed its shape. But, from this experiment, we can cerebrate that each further cooling the ratio or by heating then instantaneously cooling the ratio product creates an adequate alert ball that when dropped it bounces like a veritable bouncy ball.References audition 2. Polymers. N.p., n.d. Web. 19 Sept. 2012. http//matse1.matse.illinois.edu/polymers/e.html. Polyvinyl Alcohol. Wikipedia. Wikimedia Foundation, 26 Aug. 2012. Web. 19 Sept. 2012. http//en.wikipedia.org/wiki/Polyvinyl_alcohol. Borax. Wikipedia. Wikimedia Foundation, 18 Sept. 2012. Web. 19 Sept. 2012. http//en.wikipedia.org/wiki/Borax.