ozi

Site na ọganihu nke oge a, ndị mmadụ na-etinyekwu uche na nchebe gburugburu ebe obibi, na mmepụta akwụkwọ ndụ akwụkwọ ndụ ụlọ ọrụ aghọwo ihe ọhụrụ na-eduga. Ya mere, ihe ndị nwere ike imebi ihe dị mkpa. Yabụ kedu ihe ndị dabere na bio?

Ihe ndị dị ndụ na-ezo aka na akụrụngwa biomass nwere ike megharia site na photosynthesis dị ka akụrụngwa, nke a na-agbanwe ka ọ bụrụ ngwaahịa ndu site na teknụzụ gbaa ụka, wee sachaa na polymerized ka ọ bụrụ biomaterials enyi na enyi gburugburu ebe obibi. Ihe ndị nwere ike imebi ihe nwere ike ire ere n'ime CO2 na H20 n'okpuru ọnọdụ microbial ma ọ bụ ọnọdụ composting. Tụnyere ihe ndị dabere na mmanụ ala, ihe ndị sitere na bio nwere ike ibelata ikuku carbon ruo 67%.

Mgbapụta carbon a na-ahụkarị n'oge usoro mmepụta nke ụfọdụ polymers (kg CO2/kg ngwaahịa):

Na ndụ kwa ụbọchị, anyị enweghị ike ime na-enweghị ngwaahịa plastik, ma anyị niile maara na plastik adịghị mma na gburugburu ebe obibi na ọ bụ isi ngwaahịa nke "ihe mkpofu ọcha". Otú ọ dị, ngwaahịa plastik dị ebe niile na ndụ anyị kwa ụbọchị. N'ihi ya, plastik ndị na-emebi emebi ejirila nwayọọ nwayọọ ghọọ ihe ọhụrụ.

Iji mezuo nke a, ndị ọkà mmụta sayensị emepụtala ngwaahịa na-emebi emebi -polylactic acid. Plastic a, nke a na-agbanwe site na starch osisi, nwere ezigbo biodegradability na gburugburu ebe obibi n'ihi usoro nkwadebe ya nke na-ewepụ ihe ọkụkụ petrochemical na gburugburu ebe obibi. Polylactic acid (PLA) bụ otu n'ime ihe ndị a na-ejikarị eme ihe, ndị na-ekwe nkwa, na ndị na-erikwa ego.

Kedu ihe bụ PLA?

Poly (lactic acid), ndebiri dị kaPLA, nke a makwaara dị ka polylactic acid,CAS 26100-51-6ma ọ bụCAS 26023-30-3. A na-eme polylactic acid site na biomass dị ka akụrụngwa, sitere na okike na nke okike. Usoro ntụgharị nke PLA bụ nke a - ndị na-ahụ maka chemist nwere ike ịmegharị starch a na-amịpụta n'ubi dị ka ọka n'ime LA site na hydrolysis na usoro ịgba ụka microbial, wee gbanwee ya na PLA site na polymerization condensation ma ọ bụ mgbanaka oghere polymerization, na-enweta "anwansi" nke ntụgharị. ihe ọkụkụ n'ime plastik.

Kedu njirimara na uru nke polylactic acid?

Enwere ike imebi kpamkpam

N'okpuru omume nke microorganisms ma ọ bụ ọnọdụ composting, ọ nwere ike wedata kpamkpam n'ime CO2 na H2O, na ọnụ ọgụgụ biodegradation nke ikwu nwere ike iru karịa 90% mgbe ụbọchị 180 gachara.

Njirimara antibacterial eke

Ọ nwere ụfọdụ ikike mgbochi Candida albicans, Escherichia coli na Staphylococcus aureus.

Biocompatibility

Ngwa ngwa lactic acid bụ ihe dị n'ime ahụ mmadụ, yana PLA bụ ihe etinyere mmadụ nke FDA kwadoro, nke ejirila ọtụtụ ebe na ngalaba ahụike.

Magburu onwe nhazi

PLA nhazi okpomọkụ bụ 170 ~ 230 ℃, na dị iche iche nhazi ụzọ dị ka extrusion, agbatị, spinning, film ịfụ, injection ịkpụzi, ịfụ ịkpụzi, na ọnya nwere ike ji mee ihe maka ịkpụzi.

Enweghị ire ọkụ

Enweghị ọkụ ọkụ, nke nwere ndepụta oxygen kacha nke gburugburu 21%, ọgbọ anwụrụ ọkụ dị ala, na enweghị anwụrụ ọkụ ojii.

Ngwa akụrụngwa enwere ike imeghari

Ngwa ngwa nke PLA sitere na isi mmalite carbon biomass nke photosynthesis kpụrụ.

Site na mmụba nke nta nke nta nke mmata gburugburu ebe obibi ndị mmadụ, plastik biodegradable ga-edochi ngwa ngwa petrochemical na-adịghị mma na gburugburu ebe obibi. Na-eche ihu na nnabata na-abawanye ụba nke plastik biodegradable site na ọha mmadụ,PLAga-enweta ntinye n'ime mpaghara mgbada ọzọ n'ọdịniihu.