Nsalu Zatsopano Zovala - Polylactic Acid Fiber

Polylactic acid (PLA)ndi zinthu zatsopano zowononga zachilengedwe zomwe zimapangidwa kuchokera ku zinthu zopangira zowonjezedwanso zochokera ku mbewu monga chimanga ndi chinangwa.

Zopangira za starch zimasanjidwa kuti zipeze shuga, yemwe kenako amafufuzidwa ndi mitundu ina kuti apange lactic acid yoyera kwambiri. PLA chimanga CHIKWANGWANI sanali nsalu nsalu ndiye mankhwala apanga lithe ena maselo kulemera polylactic asidi. Ili ndi biodegradability yabwino. Pambuyo pa ntchito, pansi pazifukwa zinazake, zikhoza kuwonongeka kwathunthu ndi tizilombo toyambitsa matenda m'chilengedwe, kupanga mpweya woipa ndi madzi popanda kuwononga chilengedwe. Izi ndizopindulitsa kwambiri poteteza chilengedwe.PLA sanali nsalu nsaluamaonedwa kuti ndi zinthu zoteteza chilengedwe.

Ulusi wa polylactic acid umapangidwa kuchokera kuzinthu zaulimi zowuma monga chimanga, tirigu, ndi ma beets a shuga, omwe amafufuzidwa kuti apange lactic acid, kenako amafota ndikusungunuka ndi kupota. Ulusi wa polylactic acid ndi ulusi wopangira womwe ungabzalidwe ndipo ndi wosavuta kukula. Zinyalala zitha kuonongeka mwachilengedwe.

Kuchita kwa biodegradable.

Zida zopangira ulusi wa polylactic ndizochuluka ndipo zimatha kubwezeredwa. Ulusi wa polylactic acid uli ndi biodegradability wabwino ndipo ukhoza kuwola kwathunthu kukhala mpweya woipa ndi H2O m'chilengedwe utatayidwa. Zonsezi zimatha kukhala zida za lactic acid wowuma kudzera mu photosynthesis. Pambuyo pa zaka 2-3 m'nthaka, mphamvu za PLA fibers zidzatha. Ngati zitakwiriridwa pamodzi ndi zinyalala zina, zimawola pakatha miyezi ingapo. Kuphatikiza apo, asidi a polylactic ndi hydrolyzed mu lactic acid ndi asidi kapena michere m'thupi la munthu. Lactic acid ndi kagayidwe kachakudya m'maselo ndipo amatha kupangidwanso ndi ma enzymes kuti apange mpweya woipa ndi madzi. Chifukwa chake, ulusi wa polylactic acid umakhalanso ndi biocompatibility yabwino.

Kuchita kwa chinyezi

Ulusi wa PLA uli ndi mayamwidwe abwino a chinyezi ndi ma conductivity, ofanana ndi kuwonongeka. Mayamwidwe a chinyezi amalumikizananso ndi morphology ndi kapangidwe ka ulusi. The longitudinal padziko PLA ulusi ali ndi mawanga osasamba ndi discontinuous mikwingwirima, pores kapena ming'alu, amene mosavuta kupanga capillary zotsatira ndi kusonyeza wabwino pachimake mayamwidwe, moisturizing ndi madzi mayamwidwe katundu.

Kuchita kwina

Ili ndi kutsika kochepa komanso kuchedwa kwamoto; Kupaka utoto ndikoyipa kwambiri kuposa ulusi wamba wamba, wosagonjetsedwa ndi asidi ndi alkali, komanso yosavuta kuyiyika. Panthawi yopaka utoto, chidwi chapadera chiyenera kuperekedwa ku mphamvu ya acidity ndi alkalinity; Kulekerera kwamphamvu kwa cheza cha ultraviolet, koma sachedwa kujambulidwa; Pambuyo pa maola 500 akuwonekera panja, mphamvu ya PLA fibers imatha kusungidwa pafupifupi 55% ndikukhala ndi nyengo yabwino.

Zopangira kupanga polylactic acid fiber (PLA) ndi lactic acid, yomwe imapangidwa kuchokera ku wowuma wa chimanga, motero ulusi wamtunduwu umatchedwanso chimanga. Itha kupangidwa ndi kupesa ma beets a shuga kapena mbewu ndi shuga kuti muchepetse mtengo wokonzekera ma polima a lactic acid. High maselo kulemera polylactic asidi akhoza analandira kudzera mankhwala polymerization wa lactic asidi cyclic dimers kapena mwachindunji polymerization wa asidi lactic.

Zopangidwa kuchokera ku polylactic acid zimakhala ndi biocompatibility yabwino, bioabsorbability, antibacterial ndi retardancy flame, ndipo PLA imakhala ndi kukana kutentha mu ma polima owonongeka a thermoplastic.

Ulusi wa polylactic acid ukhoza kuwola kukhala carbon dioxide ndi madzi munthaka kapena m'madzi a m'nyanja. Ikatenthedwa, sichitulutsa mpweya wapoizoni ndipo sichiyambitsa kuipitsa. Ndi ulusi wokhazikika wachilengedwe. Nsalu zake zimamveka bwino, zimakhala bwino, sizingagwirizane ndi kuwala kwa UV, zimakhala ndi mphamvu zochepa zoyaka, komanso zimapangidwira bwino. Ndi yoyenera pamafashoni osiyanasiyana, zovala zopumira, zinthu zamasewera, ndi zinthu zaukhondo, ndipo ili ndi chiyembekezo chogwiritsa ntchito.