Mibvunzo yemuenzaniso wePolymer nekukurukurirana
I. Nhanganyaya
MaPolymer makemikari ane maumbirwo makuru emamorekuru anoumbwa nemayuniti madiki anodzokororwa anonzi mamonomer. MaPolymer anogona kuwanikwa mumhando dzakasiyana uye anoshandiswa muzvinhu zvakawanda zvehupenyu hwezuva nezuva, kubva kumapurasitiki nerabha kusvika kumapuroteni neDNA mumuviri wemunhu. Muchinyorwa chino, tichaongorora mienzaniso yakati wandei yezvinetso zvine chekuita nemapolymer uye kupa mhinduro dzedambudziko rega rega kuti tibatsire kunzwisisa pfungwa iyi yakaoma.
II. Pfungwa huru dzemaPolymers
Tisati tatanga kukurukura mibvunzo iyi, pane pfungwa dzinoverengeka dzinofanira kunzwisiswa:
1. Monomers nePolymerization: Monomers ndiwo mayuniti ekutanga anogadzira mapolymer kuburikidza nemaitiro epolymerization. Kune mhando mbiri huru dzepolymerization: kuwedzera uye kuunganidzwa.
2. Maumbirwo ePolymer: MaPolymer anogona kunge ari mumutsara, ane matavi, kana kuti akabatana.
3. Mhando dzePolymers: Thermoplastics, thermosets, uye elastomers, imwe neimwe ine hunhu hwakasiyana hwemuviri nehwekupisa.
III. Mibvunzo yemuenzaniso nekukurukurirana
Mubvunzo 1: Tsanangura musiyano uripo pakati pekuwedzera nekuwedzera kwemvura, wopa muenzaniso mumwe chete wechimwe nechimwe.
Kukurukurirana:
– Kuwedzera polymerization: Maitiro ayo mamonomer ane mabhondi maviri anobatana pasina kuumbwa kwemorekuru diki. Muenzaniso kuumbwa kwepolyethylene kubva kumamonomer e-ethylene.
– Kupomera kwemvura inonyungudika: Maitiro ayo mamonomer anobatana nekubvisa molekyuru diki senge mvura kana methanol. Muenzaniso wepomera kwemvura inonyungudika kuumbwa kwenylon kubva kuadipic acid nehexamethylenediamine, uko mvura iri molekyuru diki inobviswa.
Mubvunzo 2: Chii chinonzi thermoplastic ne thermoset polymers? Ipa mienzaniso.
Kukurukurirana:
– Mapolymer eThermoplastic: Mapolymer anopfava kana apiswa uye anoomarara kana atonhodzwa. Izvi zvinoita kuti agadziriswe kakawanda. Mienzaniso inosanganisira polyethylene, polystyrene, uye PVC.
– Mapolymer ethermosetting: Mapolymer ayo, kana angoumbwa, haagone kunyungudutswa zvakare. Izvi zvinokonzerwa nekuvapo kwezvisungo zvinogara zviripo. Mienzaniso inosanganisira Bakelite ne epoxy.
Mubvunzo 3: Polymer ine cheni huru yekabhoni yakatwasuka ine maatomu echlorine anotsiva cheni yega yega yekabhoni. Taura iyo polymer uye tsanangura kuti hunhu hwayo hwepanyama hwakafanana sei nehwe polyethylene.
Kukurukurirana:
Polymer inotsanangurwa ipolyvinyl chloride (PVC). PVC inogadzirwa kubva kuvinyl chloride, uye chlorine inotsiva iyo inoita kuti iome uye isanyanya kubatwa nemafuta nemakemikari kupfuura polyethylene. Izvi zvinoitawo kuti PVC isanyanya kupiswa nemoto uye ireme kupfuura polyethylene nekuda kwemaatomu echlorine anorema.
Mubvunzo 4: Mapolymer echisikigo akadai serabha (elastomers) anogona kusvibiswa. Tsanangura maitiro ekuputika uye mhedzisiro yayo pahunhu hwerabha.
Kukurukurirana:
Kupisa rabha nesarufa inzira yekupisa rabha nesarufa. Izvi zvinogadzira kubatana pakati pemacheni epolymer, zvichiita kuti rabha rive rakapfava, rakasimba, uye risingatsvedzeri kuchinja kwetembiricha. Maitiro aya anowedzera kuramba kukweshwa nekusakara, zvichiita kuti rabha rigare kwenguva refu kushandiswa mumaindasitiri akadai sematai emotokari.
Mubvunzo 5: Verenga huwandu hwemayuniti anodzokororwa (dhigirii repolymerization) epolyethylene ine avhareji yehuremu hwemamorekuru hwe28.000 g/mol. Huremu hwemamorekuru eethylene monomer i28 g/mol.
Kukurukurirana:
Dhigirii repolymerization (n) rinogona kuverengerwa uchishandisa fomura:
\[ n = \frac{\text{Huremu hwemamorekuru epolymer}}{\text{Huremu hwemamorekuru emonomer}} \]
\[ n = \frac{28000 \, \text{g/mol}}{28 \, \text{g/mol}} = 1000 \]
Saka, polymer ine mayuniti anodzokororwa angangoita chiuru.
IV. Mhedziso
Kukurukurirana nezvemapolymer kunogona kufukidza misoro yakasiyana-siyana, kubva pachimiro chavo chepakutanga uye mhando dzavo kusvika pahunhu hwavo hwepanyama uye hwemakemikari uye mashandisirwo avo muhupenyu hwezuva nezuva. Kuburikidza nemibvunzo nehurukuro, zvinogona kugumiswa kuti mapolymer zvinhu zvakaoma zvemakemikari zvinoita basa rakakosha mumaindasitiri akasiyana-siyana uye biology. Nekunzwisisa kwakadzama kwehunhu hwavo uye maitiro ekuumbwa, tinogona kunzwisisa zviri nani mashandisirwo avo mukushandiswa kwakasiyana-siyana kwetekinoroji nesainzi. Mapolymer achiri kuramba ari nzvimbo inoshanda yekutsvagisa mukugadzirwa kwezvinhu zviri nani uye zvine hushamwari kune zvakatipoteredza.
