Chem 1AL- Lab 3: Polymers, Lab Reports of Chemistry

Download Chem 1AL- Lab 3: Polymers and more Lab Reports Chemistry in PDF only on Docsity! Report Sheet Name Onna y Yungara Parmer) Ayah Gyeobs | | Part 1: Exploration of Polymer Properties Table 1. Properties of polymer samples mixed with borate cross-linker. A B c D E Polymer solution 5 50% Elmer's PVA (3mL) and Qader) 4% PVA We comstarch | 0.5% guar gum | Ti ne Suan gimm'(lal) Observations selekion is[eolelion [salebe ee (Glicn jal selene, AG, beforeadding! J eleae, ie Mehestie [Bled olekef cle (bat cl bles | mL of borax seme we sed imal pee Sltse J @ 4b. tep | solution. A Lbles diese Observations after fed SOs Fay tty shM [bvean crested AG (plese | ning tras te? eee EEE Une [pA ae no, iF clumped » awe © Jelem into I = cite [be l rs 4 qel-like ae Ivee Did stirring cause a | § bse td Le bed lee si change? feeb sellniadid eel Peek CT eleme [a LU Do further changes |, acs no ace le occur after resting for a few minutes? . . o no no Does it stick to no by your gloves? Does it stick to a watch glass? Does it hold its es no we 1° a shape after 4 stretching? __ ae ~ aealacbiltacemalecse pore kena Eid ye eh a eae L no no ho no you stretch the Gold, shape | dese sample quickly or |% 4 breabs| sfeateh [either way [ile shape shagerleng slowly? if g cick 1 7 = How fardoesit [4 em v/s, i boom Bo ¢ 232 stretch before nod sbrebe breaking? 7 | ho wer 2% es, 4 no Does it bounce? If 4 ** 2. igh joe so, how high? mye [Ph ber [om emey agile wet ly, he eel | Syatellal cae j + Voss sok i? i . the yseyt Observations after te reas oki M : adding more borax it: t Bo lias $a) =e 69 °° ——— lowing polymer fo yy see in tne ture-property 1. Using the data in your table, try to explain some are a slate some structure-P Properties based on the structures of the polymers (i elationships), A. Stickiness: ad is, dle “b iG j ne were bare T s vache V: ij are tere t B. a Poy | : as ae Coy, share an var vm ati pose | ae eC ae he pele : fil oes ella ounciness: beewe Semele edna gai bee natn y ; Mace i lege’ al ymers bevne ed SR alee hon We Aechy ry eee hv sl: it is Jet f B | Part 2: Exploration of Polymer Mixture Ratios on Properties 2. Describe the model being tested in Part 2. Make sure you draw on your understanding of a ek pela Bs ol rl Pia tM ra: thee . ae as alee steatel etlesa tl. aa (| a3 ey a Te i i MW, Mee feed elo gs the 8 ep aleskigg th aeoes late ceabores the melee Tale. Yi ace dhe oak, obtehty sbecs im s hats wl hint We ¢ IL Vall the nie ra 2 beaglh Gah" lai 3 CENA i \ i es be see Lease UBM het el ’ Deel aalbthies im art 1, dhs, viedi'e Bed ak MEL fA fe ethend hinckeh gay th lang? 7. Review the results of your experiment. a. What is the predominant trend that ? Be Ml cel arava alan cocoed lle (t (Be \\ elise Nea ay! Less PNA= less Lidl of When mn * tind neioe -smgeis lighs», there ee yg 13 ae reeete Me bing Ldutatecat alse ake lo oluciee b. Can you ee this trend using explanations based on molecular structures of the compounds invglved? ie | nL. Meewd Mlsaky ela «neal arate os chews Wagan ee date Mepeleeld i ANe --} fad WAS oT: ie aT amt { When more olay ; lhe J Metleds os ed pierre Sa eal var PL Y cl dee, te aos ioe perl eye less, ektee vl rolh Ge ens ate eat ale rere aes ef eo ev c. Based on your answer to part b of this S qhestion, ¥ what changed should you make to your initial model? (Note: if the ot is “none,” ye must justify this.) { af ( wal, oly tate al re eae eee fall bales (00 %6 an AG ”. A Lee cee ll ees “ a. af LL eal tA Pini il Bar ; 1, (22 ~s inj in ata Weagth. Men qo. 4, he a vie ac5gu4- T+ gn reaties . 4, rae And sor * bel Ts ] mathe the waste after it leaves the lab aon t oF rls ‘ Le ae “ i ; ace 8. In your prelab, you identified the waste generated from this experiment and how to properly dispose of it in your lab room. The polymer waste you generated from this as is wea hen incinerated to dispose, Of \ AP endence) PAG (I a 34 Wha Terese nee Yar? #4| CY. Ale ie re sae cere ee ee eect eth met teebes a move cient s | Tee (See foarbes lie waste ave ve oo ic alse pale, Fells eke dele ee le. { j f Hh : |" __*-b. What are the disadvantages? i Hat wo) © decal joel (ae licae mm <tastiattan " Snesneape= sins Tie sl) eng bald sul ad Fol. “ ren the a tte eee hee a t aieill a 2 whie i. ie worming ew MAL oc’ Since {he can is covre euvirenmen ir he programs: Leet ne vation * This article provides some islet into Berkeley and Stanford's Environmental Health, & Safety ( it savotainable. tp/ i i/o iL ht Zimmer, K. Life Scientists Cut Down on Plastic Waste. hitps’//www.the-scientist com/careers/life-scientists-cut-down-on-plastic-waste-64547 {accessed Nov 20, 2018). 13 . ily lives? How can we better manage waste in our daily lives? ; d vell-known application. 9. Polymers are ubiquitous in our daily lives — plastics being the ee vigid, et.) and a Plastics can take on many different forms (flexible, brittle, ae a soaks them very very durable. All the properties that make plastics excellent pros That plastic waste stays in difficult to use sustainably. Their resistance to degradation means a are traditionally our environment for hundreds to thousands of years. Additionally, plastic: synthesized from non-renewable sources like fossil fuels. lear i aw Plastics are used in a huge variety of contexts including in science ener a. in the introduction, nearly 2% of the world’s plastic waste in 2014 came fro p labs.° And this waste can end up in many different places including the ear ivalent of “approximately nine million tons of plastic end up in the ocean each year—t ss oa, the five plastic grocery bags stuffed with plastic trash on every foot of coastline ashi > world.” There are many proposed solutions to the problem of plastic waste, including: é Create and use biodegradable plastics that decompose under normal enviro! conditions. r B. Develop chemical additives to help biodegrade any plastic ( more quickly. C. Move towards a “circular economy” model, in which all plastics are reused or recycled — eliminating waste and environmental pollution. D. Move towards a “zero waste” model — no disposable plastic is used. nmental plant- or fossil fuel-based) a. Choose one option that you think is the most promising solution to reduce plastic waste in the ocean and explain why this target is the most promising. Make sure to define the criteria you're using for your choice (e.g., cost, ease of implementation, short- term/long- term solutions, public perception, chemical/engineering feasibility or 1 airs eee no one ‘correct’ answer.) | | | . \ in ‘ mos vewmisin Soe ON i“ i. | Pal ie, th. peal ad ane bead dD ples enviren Menta lemend alien, Jeng onder sere i ee te a dle ublse de pk toe Faw wn Th ee ae eee vere ~ A ch gee tnlacy ape: Maske ple p Atle agen ‘ ae A, ie cliaten pet cae no txbda ives eae les 7 +s al = { \ ere ean nee NC hee «Ewe uapeee Mime earn Tere bat vein ieodeqrade te | \ change Norma iv } jee 4, Ven. Mes yh j ee ae re ne Ete) wan Fa tnhvironms . : ne St lg Ae ode nila © © Zimmer, K. Life Scientists Cut Down on Plastic Waste. http://www the-scientist convcareers/life-scientisty-cut-down- shsenatefin I ) |. bo (accessed Nov 20, 2018) imaiple men eeNecdS€ ; a ileal exlshs an castes Retrieved from https:/Avww, natifoalgeosraphic ore/projects/ogean-plastics/ (accessed July 17, 2018); National Geograpife recently had an eee centre issue devoted to plastics hitps /www nationalgeosraphic conveny ironmanvplanetorplastic/ ras tim ple q. predeee 74 b. Suppose your lab partner disagrees with yout choice for reducing plastic waste. What might be some saa they could CT = dL. | si wld be RAL th... et i Peta i beet Ree eee ‘ uc : ae Wow wee er er 4. ils pe ee ; det elit: ie ome Ose, ae eal sees : edi ieee id micre astics ° elean ind, et ee 2 eee Ses c. How would you respond to these criticisms? Would you still consider your choice the best option? s Mien aca women lsat Al wld we Ca “| eer HL bal a a Sire anise; al is S I cag de Sh le rf 75 - 12 (Tear here) BOOK PAGE TILE Sse PROJECT DATE | Condoued tam Fog G THA [Maes st beAbL Berav | PVA ad A ee (@Lt) |G Gt) (=¥) [evar aver | Ce 4 a : | valk als 1.4, | the ‘ Fi ! TEAC ere ees ter eT | | skie 4 | eee ds lel aby 3 15 ] i | 10 : (de cbddedcl ibvall H 1 T 1 tm LED E oftbel 3 eae bigest - nok muah fig Te PT aed a ] L ia 5 437 5 | Ic | mars solid rine 2 +106 eeke (0 ne Se eens “ee worl “ts eAweD e fade ele \ 14 othe 1 \¢" werk ahedbeh sys obote plik dls Fu ils 25| § | mere hats Si 7 - Fateh esint 2Vlape tudes : 4 © mode ma ok m lose! theebahy |[E ol walt bell =" Libel Gable a is] Tiff: a melee “A430 Lilew see ate 35 100:0 10:\6 %0:20 10:36 60:40 50:50 Hoo 30:10" 20:10 (orqo 22100 a Mags! Rabin PYA:) Gutsy Geo bl eae 4 eA eh a Wl A DW) A A) WS le) el) Me Me) SE EA 20 25 30 TITLE Continued PROJECT from Page cComMPaUND - 13 BOOK DATE STRUCTURE PAGE A POLYVINYL ALCOHOL aN Ou O B® | Poryvinye ACETATE KC 0 Hy aw 08 ESS C | Guar Gum ; 9, ow 6 ¥ oS 0. no ow aad a «OR n . au aks | p_| AMY Lore crin 1 as 3 oe eS 0 as o o4 | Re we 0” ko ior cal BORATE ION 35 Class weve ‘SIGNATURE Diss Canbiabedi: evess linking more beomeg] clerhe . etd pall tery ot ack fs res WITNESS A (vear nerey TITLE _ | | Pant | [elmeve as a wh: -4t.. Ny 8 25 30 35 | | SIGNATURE Continued from Page L ecb 2 PVA= PVA sheletehin ses PVA AE Hy deny Class move A, babel — lL.lhee vohie Ls Hons — steak elise | ue —— | ne lL Ld DATE ____ PROJECT Discussion! shed hil mn WITNESS Continued to Page DATE | | |