Polylactic acid (pl): njira ina yachilengedwe yocheza ndi ma pulasitiki

Kodi pla?

Polylactic acid, omwe amadziwikanso kuti pla (polylactic acid), ndi a admoplastic monomer omwe achokera ku magwero opangidwa mwaluso monga shuga kapena beet zamkati.

Ngakhale zili zofanana ndi mapulaneti a m'mbuyomu, malo ake amakhala ndi zinthu zakale, ndikupangitsa kukhala njira zachilengedwe zambiri zopangira mafuta zakale.

Planda siligwirizana ndi karibon, wokometsera, ndi biodegradgles, zomwe zikutanthauza kuti itha kuwola moyenera m'malo oyenera m'malo mongophwanya maikolotekisi oyipa.

Chifukwa cha kuthekera kwake kuwola, imagwiritsidwa ntchito ngati zinthu zopangira matumba apulasitiki, zikwangwani, mbale, mbale, ndi matebulo.

Makina osokoneza bongo a pla

Pulo imachitika popanda kuwonongeka kwa zinthu zitatu:

Hydrolysis: Magulu a ester mu unyolo waukulu wathyoledwa, zomwe zimapangitsa kuchepa kwa kulemera kwa maselo.

Dongosolo la mafuta: Phunomenon yovuta yomwe imabweretsa kupanga mitundu yosiyanasiyana, monga mamolekyulu opepuka, mzere ndi cyclic ndi zolemera zosiyanasiyana, ndi lactade.

Photodergration: Mphamvu ya ultraviolet imatha kuyambitsa kuchepa. Ichi ndiye chinthu chachikulu chomwe chimavumbula polylactic acid ndi kuwala kwa dzuwa mu pulasitiki, zotengera zam'mapulogalamu, ndi makanema afilimu.

Zochita za Hydrolysis ndi:

-Coo- h 2 o → --Cooh +.

Kuchuluka kwa kusamvana kumakhala kodetsa kwambiri. Phunziro la 2017 lomwe lapezeka kuti Plgatile silinawoneke bwino patatha chaka chimodzi m'madzi am'madzi pa 25 ° C (77 ° F), koma phunziroli silinayezerere kuwonongeka kapena madzi oyamwa a polymer unyolo.

Kodi madera ogwiritsa ntchito a PL?

1. Katundu wogula
Play imagwiritsidwa ntchito m'malo osiyanasiyana ogula, monga matebulo otayika, matumba apamwamba, amatulutsa zida zakhitchini, komanso ma laptops ndi zida zamagetsi.

2. Ulimi
Pla ya Play imagwiritsidwa ntchito mu mawonekedwe a mizere ya nsapato ndi maukonde a masamba ndi udzu. Chogwiritsidwa ntchito pamakhoma, maluwa otentha, kumanga zingwe, ndi zingwe.

3. Mankhwala azachipatala
Pla imatha kunyoweka mu chactic osavulaza, kupangitsa kuti ikhale yoyenera kugwiritsa ntchito zida zamankhwala mu mawonekedwe, zomangira, zikwangwani, ndodo, ndodo.

Zochitika zinayi zomwe zingachitike

1. Kubwezeretsanso:
Itha kukhala mankhwala kubwezeretsanso kapena kukonzanso. Ku Belgium, mlalang'amba wakhazikitsa chomera choyamba woyendetsa ndege kuti abwezeretse mankhwala a plaf (loop). Mosiyana ndi makina obwezeretsa makina, zinyalala zimatha kukhala ndi zodetsa zambiri. Polylactic acid ikhoza kubwezeretsedwanso monga molmomers kudzera polymerization polymerization kapena hydrolysis. Pambuyo podziyeretsa, moolomers itha kugwiritsidwa ntchito popanga raw osataya katundu wawo woyambayo.

2. Composting:
Plall ikhoza kukhala yopanda mafilimu opanga mafakitale, kuyambira kudzera mu hydrolysis hydrolysis, kenako kudzera mu chimbudzi, ndipo pamapeto pake zidawonongeka. Pansi pa manyowa mafakitale (138 ° C)), plef f) M'malo osafunikira, kuwonongeka kumachitika pang'onopang'ono, ofanana ndi pulasitiki, omwe sadzawola kwa mazana kapena masauzande.

3. Kutentha:
Play imatha kukhala yotsekemera popanda kupanga chlorine yokhala ndi mankhwala kapena zitsulo zolemera, monga ziliri ndi ma atomu a mpweya. Kuyaka koyaka kwa Play kumatulutsa 19,5 mj / kg (8368 BTU / LB) ya mphamvu osasiya zotsalira. Zotsatira zake, komanso zomwe zapezedwa, zikuwonetsa kuti kusokonekera ndi njira yachilengedwe yochizira kuwononga polylactic acid.

4. Landfill:
Ngakhale Plapp ikhoza kulowa malo osungidwa, ndiye kusankha kochepa kwambiri chifukwa chovuta pang'onopang'ono pa kutentha pang'ono, makamaka pang'onopang'ono ngati ma pulasitiki ena osawonongeka.