Selelekela sa lintho tse bonahalang 

PLA (polylactic acid) biodegradable material refers to a class of materials that are degraded by the action of microorganisms such as bacteria, molds (fungi) and algae that exist in nature. Chinese alias: polylactide (also known as polylactic acid) English name: polylactide, polylactic acid, abbreviated PLA English alias: polytrimethylene carbonate; 1,3-Dioxan-2-one homopolymerMolecular formula: (C3H4O2)n 

PLA polylactic acid e sebelisa lactic acid e le eona ntho e ka sehloohong e tala, haholo-holo e fumanoang ho tloha cassava, poone, 'moba le litlama tse ling ho fumana starch le tsoekere ea lactic acid e fumanoang ka ho belisoa ha baktheria,' me qetellong e etsa polymer e fumanoang ke polymerization ea polylactic acid (PLA). ). Mohloli oa lisebelisoa tse tala o lekane ebile o ka nchafatsoa. 

The entire production process of polylactic acid and polylactic acid fiber does not involve any harmful substances. It is a kind of polymer material with excellent performance, which can be completely decomposed by environmental microorganisms after being discarded, and finally be inorganicized and become an integral part of the carbon cycle in nature. 

Litšobotsi tsa thepa

1. Polylactic acid (PLA) ke mofuta o mocha oa thepa e ka senyehang e nang le biodegradability e ntle. Ka mor'a ho sebelisoa, e ka senyeha ka ho feletseng ke likokoana-hloko tsa tlhaho, 'me qetellong e hlahisa carbon dioxide le metsi, e sa silafatsang tikoloho, e leng molemo haholo ho sireletsa tikoloho. , ke thepa e tsebahalang e se nang botsoalle.

2. Filimi ea Polylactic acid (PLA) e na le moea o motle oa ho kenella ha moea, oksijene e kenang le carbon dioxide permeability. E boetse e na le litšobotsi tsa monko o ikhethileng. Ke eona feela polasetiki e ka senyehang e nang le thepa e ntle ea antibacterial le antifungal.

3. Ha incinerating polylactic acid (PLA), combustion calorific value ea eona e tšoana le ea pampiri e chesang, e leng halofo ea lipolasetiki tsa setso tse chesang (tse kang polyethylene), le incinerating PLA ha ho mohla e tla ntša likhase tse chefo tse kang nitrides le sulfide. . . 'Mele oa motho o boetse o na le lactic acid ka mokhoa oa monomeric, e leng se bontšang tšireletseho ea sehlahisoa sena se senyehang.

Lintho tsa tlhaho le melemo

1. Theko ea pH e pota-potile 6, e leng acidic e fokolang.

2. Ho thibela likokoana-hloko, tekanyo ea ho thibela ts'ebetso ea anti-mite ea data ea teko ke 71.39%, 'me qeto ke hore e na le phello e khahlanong le mite.

3. Tšusumetso ea antibacteria e totobetse, 'me tekanyo ea tahlehelo ea Staphylococcus aureus, Candida albicans le Escherichia coli e feta 98%. (Teko ea tumello ea SGS) 

4. Ha ho na lithethefatsi tse thibelang likokoana-hloko, li-anti-mite kapa lik'hemik'hale tse ling tse kenyelletsoeng ts'ebetsong ea tlhahiso, e leng ka ho feletseng ts'ebetso ea thepa ea eona ea tlhaho.

5. Ho itšeha ka tlhaho: ho sa chese, 'me index ea moeli oa oksijene e phahame ho feta ea polyester le nylon.

6. Ts'ebetso ea ho kenya mocheso oa mocheso ke makhetlo a 1.8 ho feta a boleng bo phahameng ba k'hothone. (Lintlha tsa liteko)

7. Rebound e ntle, bulkiness e matla, maikutlo a boreleli, ho omisa kapele le ho hanyetsa UV. 

Tšebeliso ea lintho tse bonahalang

Polylactic acid e na le botsitso bo botle ba mocheso,mocheso oa ho sebetsa ke 170 ~ 230 ℃, 'me e na le khanyetso e ntle ea solvent. E ka sebetsoa ka mekhoa e fapaneng, joalo ka extrusion, spinning, biaxial stretching, ente blow molding. Ntle le ho senyeha ha lintho, lihlahisoa tse entsoeng ka polylactic acid li na le biocompatibility e ntle, gloss, ponaletso, maikutlo a matsoho le ho hanyetsa mocheso, hammoho le ho hanyetsa libaktheria tse itseng, ho thibela lelakabe le ho hanyetsa UV, kahoo li molemo haholo. ka bophara. 

Lisebelisoa tse ka senyehang tse sebelisoang ho tsa bongaka, litho tsa batho le mafapha a mang li ka fetoloa hore li rale le ho etsa lisebelisoa tse senyehang ntle le polasetiki, tšepe e boima le lik'hemik'hale tse chefo, bisphenol A, e ikemetseng ho lisebelisoa tsa peterole, 'me e bolokehile bakeng sa ho kopana le lijo; 

The molding process can be selected from injection molding, extrusion, blow molding, and blister molding, which is suitable for household daily necessities, tableware products in contact with food or oral cavity, etc.;It can be widely used as packaging materials, fibers and non-woven fabrics, etc., and is mainly used in clothing (underwear, outerwear), industry (construction, agriculture, forestry, papermaking) and medical and health fields. 

Tšebeliso ea Moshoelella 

1. Fokotsa tšebeliso ea lisebelisoa tsa petrochemical le ho fokotsa tlhahiso ea carbon 

2. Sebelisa lisebelisoa tsa tlhaho tse ka nchafatsoang (joalo ka: setache sa semela, 'moba, fiber ea joang, joalo-joalo)

3. Amohela mekhoa ea tlhahiso e tala le e sireletsehileng

4. E lumellana le mokhoa o teng oa tsamaiso ea litšila tse tiileng

5. E ka chesoa - mollo o hloekileng ka ho feletseng

6. E ka tšeloa mobu - ha ho na leachate kapa lintho tse chefo le tse kotsi

7. Compostable 

8. E ka sebelisoa hape le ho sebetsoa hore e be li-monomers kapa lihlahisoa tse ling

9. Etsa tikoloho e ntle ea bophelo bakeng sa meloko e tlang le ho ntlafatsa boleng ba bophelo 

Ho senyeha ha PLA ho bontša 

Ho senyeha ha manyolo:PLA can achieve full biodegradation within 180 days under compost degradation conditions, and the final degradation products are carbon dioxide and water. The composting conditions are as follows:The temperature is 58±2℃Humidity is 98% 

Ho na le likokoana-hloko tse itseng 

ho senyeha ha lithōle:landfill conditions are different from composting conditions, so the degradation rate of PLA is slower, generally taking 2-5 years, but the degradation products do not pollute groundwater, do not damage plant growth, and do not waste arable land. degradation.Incineration : PLA has a small combustion calorific value, and the complete combustion products are carbon dioxide and water, which does not pollute the air. 

Boemo ba indasteri le litebello

The price of PLA before large-scale industrialization is $1000/kg. Later, large-scale production was achieved through the industrialization research of Professor Ramani Narayan's research group at Michigan State University. The technology is now industrialized by Natureworks. The largest manufacturer of PLA is NatureWorks in the United States, followed by China's Hisun Bio, whose current output is 100,000 tons and 5,000 tons respectively. PLA has many applications and can be used in extrusion, injection molding, film drawing, spinning and other fields. PLA fiber uses natural and renewable plant resources as raw materials, which reduces the dependence on traditional petroleum resources and meets the requirements of sustainable development of the international community. It has both the advantages of synthetic fibers and natural fibers, and at the same time has the characteristics of complete natural circulation and biodegradation. Compared with conventional fiber materials, corn fiber has many unique properties, so it has been widely valued by the international textile industry.