Tam sim no,biodegradable cosmetic ntim cov ntaub ntawvtau siv rau kev ntim cov tshuaj nplaum, lipsticks thiab lwm yam tshuaj pleev ib ce. Vim qhov tshwj xeeb ntawm cov tshuaj pleev ib ce nws tus kheej, nws tsis tsuas yog yuav tsum muaj qhov tshwj xeeb zoo nkaus li, tab sis kuj yuav tsum muaj lub ntim uas ua tau raws li nws cov haujlwm tshwj xeeb.
Piv txwv li, qhov tsis txaus ntseeg ntawm cov khoom siv tshuaj pleev ib ce yog ze rau cov khoom noj. Yog li ntawd, kev ntim cov tshuaj pleev ib ce yuav tsum tau muab cov khoom muaj txiaj ntsig zoo dua thaum tuav cov khoom kom zoo nkauj. Ntawm qhov tod tes, nws yog ib qho tsim nyog yuav tsum cais tawm lub teeb thiab huab cua, zam cov khoom oxidation, thiab cais cov kab mob thiab lwm yam kab mob los ntawm kev nkag mus rau hauv cov khoom. Ntawm qhov tod tes, nws tseem yuav tsum tiv thaiv cov khoom xyaw nquag hauv cov tshuaj pleev ib ce los ntawm adsorbed los ntawm cov ntaub ntawv ntim khoom lossis ua rau lawv cuam tshuam nrog lawv thaum khaws cia, uas yuav cuam tshuam rau kev nyab xeeb thiab zoo ntawm cov tshuaj pleev ib ce.
Tsis tas li ntawd, kev ntim cov tshuaj pleev ib ce muaj kev ruaj ntseg lom neeg, vim hais tias nyob rau hauv cov additives ntawm cosmetic ntim, qee yam khoom tsis zoo yuav yaj los ntawm cov tshuaj pleev ib ce, yog li ua rau cov tshuaj pleev ib ce kom muaj kab mob.
Biodegradable cosmetic ntim cov ntaub ntawv:
PLA khoommuaj kev ua tau zoo thiab biocompatibility, thiab tam sim no yog lub ntsiab biodegradable ntim khoom rau tshuaj pleev ib ce. Cov khoom siv PLA muaj qhov zoo rigidity thiab mechanical resistance, ua rau nws yog ib qho khoom siv zoo rau kev ntim khoom kom zoo nkauj.
Cellulose thiab nws cov derivativesyog cov feem ntau siv polysaccharides siv nyob rau hauv ntim ntau lawm thiab yog cov feem ntau natural polymers nyob rau hauv lub ntiaj teb no. Muaj cov piam thaj monomer txuas ua ke los ntawm B-1,4 glycosidic bonds, uas ua rau cov cellulose chains tsim muaj zog interchain hydrogen bonds. Cellulose ntim yog tsim rau cia cov tshuaj pleev ib ce tsis-hygroscopic qhuav.
Cov khoom siv hmoov txhuv nplej siabyog polysaccharides tsim los ntawm amylose thiab amylopectin, feem ntau muab tau los ntawm cereals, cassava thiab qos yaj ywm. Cov khoom lag luam uas muaj hmoov txhuv nplej siab muaj xws li cov hmoov txhuv nplej siab thiab lwm yam khoom siv polymers, xws li polyvinyl cawv lossis polycaprolactone. Cov hmoov txhuv nplej siab raws li cov khoom siv thermoplastic no tau siv dav hauv kev lag luam thiab tuaj yeem ua tau raws li cov txheej txheem ntawm kev siv extrusion, txhaj tshuaj molding, tshuab moulding, zaj duab xis tshuab thiab foaming ntawm cov ntim tshuaj pleev ib ce. Haum rau non-hygroscopic qhuav cosmetic ntim.
Chitosanmuaj peev xwm ua biodegradable ntim khoom rau tshuaj pleev ib ce vim nws cov tshuaj tua kab mob. Chitosan yog cationic polysaccharide muab tau los ntawm deacetylation ntawm chitin, uas yog muab los ntawm crustacean plhaub los yog fungal hyphae. Chitosan tuaj yeem siv los ua txheej txheej ntawm PLA zaj duab xis los tsim cov ntim tau yooj yim uas yog biodegradable thiab antioxidant.
Post lub sij hawm: Lub Xya hli ntuj-14-2023
