Isikhokelo kwi-PLA - i-Polylactic Acid

Yintoni i-PLA? Yonke into ekufuneka uyazi

Ngaba ukhe wakhangela enye indlela kwiiplastiki ezisekwe kwipetroleum kunye nokupakishwa? Imakethi yanamhlanje iya ngokuya isiya kwimveliso enokubola kunye ne-eco-friendly eyenziwe ngezixhobo ezivuselelekayo.

Ifilimu ye-PLAIimveliso ziye zakhawuleza ukuba zezinye zezona zithandwa kakhulu ezinokubola kunye nokukhethwa kokusingqongileyo kwimarike. Uphononongo luka-2017 lwafumanisa ukuba ukutshintshwa kweplastiki esekwe kwipetroleum kunye neeplastiki ezisekwe kwibhayoloji kunokunciphisa ukukhutshwa kwerhasi yobushushu bemizi-mveliso ngama-25%.

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Yintoni i-PLA?

I-PLA, okanye i-polylactic acid, iveliswa kuyo nayiphi na iswekile evundileyo. Uninzi lwe-PLA lwenziwa ngombona kuba umbona yenye yezona swekile zingabizi kakhulu kwaye zifumaneka kwihlabathi jikelele. Noko ke, ummoba, ingcambu yetapioca, icassava, neswekile beet pulp zezinye iindlela.

Njengezinto ezininzi ezinxulumene ne-chemistry, inkqubo yokudala i-PLA kumbona inzima kakhulu. Nangona kunjalo, inokuchazwa ngamanyathelo ambalwa acacileyo.

Zenziwa njani iimveliso ze-PLA?

Amanyathelo asisiseko okudala i-polylactic acid evela kumbona zezi zilandelayo:

1. Isitatshi sokuqala sombona kufuneka sitshintshwe sibe yiswekile ngenkqubo yomatshini ebizwa ngokuba yi-wet milling. Ukusila okumanzi kwahlula isitatshi kwiinkozo. I-Acid okanye ii-enzymes zongezwa emva kokuba la malungu ahluliwe. Emva koko, bayafudumala ukuguqula isitashi kwi-dextrose (i-sugar sugar).

2. Emva koko, i-dextrose ivundisiwe. Enye yeendlela eziqhelekileyo zokuvutshelwa ziquka ukongeza ibhaktheriya yeLactobacillus kwi-dextrose. Oku, kwakhona, kudala i-lactic acid.

3. I-asidi ye-lactic emva koko iguqulwa ibe yi-lactide, i-ring-form dimer ye-lactic acid. Ezi molekyuli ze-lactide zidibana kunye ukuze zenze iipholima.

4. Isiphumo se-polymerization ngamaqhekeza amancinci eplastiki ye-polylactic acid ekrwada enokuthi iguqulelwe kwiimveliso zeplastiki ze-PLA.

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Ziziphi iingenelo zeemveliso ze-PLA?

I-PLA idinga i-65% yamandla angaphantsi kwamandla ukuvelisa kuneeplastiki zemveli, ezisekelwe kwipetroleum. Ikwakhupha i-68% yeegesi ze-greenhouse ezimbalwa. Kwaye akuphelelanga apho:

Iinzuzo zokusingqongileyo:

Xa kuthelekiswa neeplastiki ze-PET - Ngaphezu kwe-95% yeeplastiki zehlabathi zenziwe ngegesi yendalo okanye i-oyile ekrwada. Iiplastiki zefosili azikho yingozi kuphela; zikwasisixhobo esinesiphelo. Iimveliso ze-PLA zibonakalisa ukutshintshwa okusebenzayo, okunokuhlaziywa, kunye nokuthelekiseka.

I-Bio-based– Izinto zemveliso esekwe kwibhayoloji zithathwe kulimo oluhlaziyekayo okanye kwizityalo. Ngenxa yokuba zonke iimveliso ze-PLA zivela kwi-starches yeswekile, i-polylactic acid ithathwa njenge-bio-based.

I-Biodegradable-Iimveliso ze-PLA zifikelela kwimigangatho yamazwe ngamazwe yokuthotywa kwebhayoloji, zithomalalisa ngokwendalo kunokuba zifumbe kwiindawo zokulahla inkunkuma. Ifuna iimeko ezithile ukuthotywa ngokukhawuleza. Kwindawo yokwenziwa komgquba kwimizi-mveliso, inokwaphuka kwiintsuku ezingama-45-90.

Ayikhuphi umsi oyityhefu – Ngokungafaniyo nezinye iiplastiki, iiplastiki zebhayoloji azikhuphi nawuphi na umsi oyityhefu xa zitshisiwe.

Thermoplastic-I-PLA yi-thermoplastic, ngoko ke iyabumbeka kwaye iyabunjwa xa ishushu kwiqondo lobushushu lokunyibilika kwayo. Inokuqiniswa kwaye ifakwe isitofu kwiifomu ezahlukeneyo iyenza ibe lukhetho olukhulu lokupakishwa kokutya kunye noshicilelo lwe-3D.

Ukutya Uqhagamshelwano-luvunyiwe-Iasidi yePolylactic yamkelwe njengePolymer Jikelele eyaziwa njengeKhuselekileyo (GRAS) kwaye ikhuselekile kuqhagamshelwano lokutya.

Iinzuzo zokupakishwa kokutya:

Abanayo imichiza eyingozi efanayo njengemveliso esekwe kwipetroleum

Zinamandla njengeeplastiki ezininzi eziqhelekileyo

Isikhenkcisi-sikhuselekile

Iikomityi ziyakwazi ukumelana namaqondo obushushu ukuya kuthi ga kwi-110°F (Iimpahla ze-PLA ziyakwazi ukumelana namaqondo obushushu ukuya kutsho kuma-200°F)

I-non-toxic, i-carbon-neutral, kunye ne-100% ehlaziyiweyo

Ngaphambili, xa abaqhubi benkonzo yokutya babefuna ukutshintshela kwi-eco-friendly packaging, basenokuba bafumana kuphela iimveliso ezibizayo kunye ne-subpar. Kodwa i-PLA iyasebenza, iyabiza, kwaye izinzileyo. Ukutshintshela kwezi mveliso linyathelo elibalulekileyo lokunciphisa icarbon footprint yeshishini lakho lokutya.

Ngaphandle kokupakishwa kokutya, zeziphi ezinye izinto ezisetyenziselwa iPLA?

Xa yaveliswa okokuqala, iPLA yaxabisa malunga nama-200 eerandi ukwenza iponti enye. Ngombulelo kwizinto ezintsha kwiinkqubo zokuvelisa, kubiza ngaphantsi kwe-1 yeedola ngeponti ukuvelisa namhlanje. Ngenxa yokuba ayisabizi ndleko, iasidi yepolylactic inokubanakho ukwamkelwa okukhulu.

Olona setyenziso luxhaphakileyo lubandakanya:

I-3D yoshicilelo lwefilament

Ukupakishwa kokutya

Ukupakishwa kwempahla

Ukupakishwa

Kuzo zonke ezi zicelo, iindlela ezizezinye ze-PLA zibonakalisa iingenelo ezicacileyo ngaphezu kwezinto zemveli.

Umzekelo, kwiiprinta ze-3D, i-PLA filaments yenye yezona zinto zikhethwa kakhulu. Banendawo esezantsi yokunyibilika kunezinye iinketho zefilament, ezenza kube lula kwaye kukhuseleke ukuzisebenzisa. I-3D yoshicilelo lwe-PLA filament ikhupha i-lactide, ethathwa ngokuba ngumsi ongeyotyhefu. Ke, ngokungafaniyo nezinye iindlela zefilament, iprinta ngaphandle kokukhupha nayiphi na ityhefu eyingozi.

Ikwabonisa iingenelo ezithile ezicacileyo kwinkalo yezonyango. Iyathandwa ngenxa ye-biocompatibility yayo kunye nokuthotywa okukhuselekileyo njengoko iimveliso ze-PLA zisihla zibe yi-lactic acid. Imizimba yethu ivelisa iasidi ye-lactic ngokwemvelo, ngoko yinto ehambelanayo. Ngenxa yoku, i-PLA isetyenziswa rhoqo kwiinkqubo zokuhanjiswa kweziyobisi, ukufakelwa kwezonyango, kunye nobunjineli bezicubu.

Kwilizwe lefayibha kunye nelaphu, abameli bajolise ekubuyiseleni iipolyester ezingahlaziyekiyo nge-PLA fiber. Amalaphu kunye namalaphu enziwe ngePLA fiber alula, ayaphefumla, kwaye anokuphinda asetyenziswe.

I-PLA isetyenziswa kakhulu kwishishini lokupakisha. Iinkampani ezinkulu ezinje ngeWalmart, iNewman's Own Organics kunye neWild Oats zonke sele ziqalisile ukusebenzisa ukupakishwa okuvundisiweyo ngenxa yezizathu zokusingqongileyo.

Isikhokelo kwi-PLA

Ngaba iimveliso zokupakisha ze-PLA zilungile kwishishini lam?

Ukuba amashishini akho ngoku asebenzisa nayiphi na kwezi zinto zilandelayo kwaye unomdla wozinzo kunye nokunciphisa indawo yekhabhoni yeshishini lakho, ke ukupakishwa kwe-PLA lolona khetho lubalaseleyo:

Iikomityi (iikomityi ezibandayo)

Izikhongozeli zeDeli

Ukupakishwa kwamadyungudyungu

Iziqulathi zokutya

Iindiza

Iibhegi zekofu

Ukuze ufunde ngakumbi malunga neemveliso ze-PLA ezifikelelekayo ze-YITO zokuPakisha kunye nokusingqongileyo, qhagamshelana!

Get free sample by williamchan@yitolibrary.com.

 

Bhala umyalezo wakho apha kwaye uwuthumele kuthi

Iimveliso ezinxulumeneyo


Ixesha lokuposa: May-28-2022