I-polymer egqibeleleyo-elungelelanisa iipropati zomzimba kunye nokusebenza kokusingqongileyo-ayikho, kodwa i-polybutylene adipate co-terephthalate (PBAT) isondela ngakumbi kuneninzi.
Abavelisi beepholima zokwenziwa kangangamashumi eminyaka basilela ukunqanda iimveliso zabo ekuphelisweni kwenkunkuma kunye nolwandle, kwaye ngoku baphantsi koxinzelelo lokuthatha uxanduva. Uninzi luphinda-phinda-phinda iinzame zokunyusa ukurisayikilishwa ukuthintela abagxeki. Ezinye iifemu zizama ukujongana nengxaki yenkunkuma ngokwenza utyalo-mali kwiiplastiki zebhayoloji ezinokonakala ngokwendalo ezifana ne-polylactic acid (PLA) kunye ne-polyhydroxyalkanoate (PHA), ngethemba lokuba ukuthotywa komgangatho wendalo kuya kunciphisa ubuncinci inkunkuma.
Kodwa zombini ukurisayikilisha kunye ne-biopolymers zijongene nemiqobo. Ngaphandle kweminyaka yomzamo, izinga lokuphinda lisetyenziswe iiplastiki e-US, umzekelo, lisengaphantsi kwe-10%. Kwaye ii-biopolymers-ezihlala ziyimveliso yokuvutshelwa-ziyazama ukufezekisa ukusebenza okufanayo kunye nesikali sokwenza iipolymers zokwenziwa ezimiselwe ukuba zitshintshe.
I-PBAT idibanisa ezinye zeempawu ezixhamlayo ze-synthetic kunye ne-biobased polymers. Ithathwe kwi-petrochemicals eqhelekileyo-i-terephthalic acid ecocekileyo (PTA), i-butanediol, kunye ne-adipic acid-kodwa i-biodegradable. Njengepolymer eyenziweyo, inokuveliswa ngokulula kwinqanaba elikhulu, kwaye ineempawu ezibonakalayo ezifunekayo ukwenza iifilimu eziguquguqukayo ezikhuphisana nezo zisuka kwiiplastiki eziqhelekileyo.
Umenzi wePTA waseTshayina uHengli. Iinkcukacha azikacaci, kwaye inkampani ayifumanekanga ukwenza izimvo. Kumajelo osasazo kunye nobhengezo lwezemali, uHengli uthe ngokwahlukeneyo uceba isityalo se-450,000 t okanye isityalo esiyi-600,000 t seplastiki enokubola. Kodwa xa ichaza izinto ezifunekayo kutyalo-mali, inkampani ibiza i-PTA, i-butanediol, kunye ne-adipic acid.
I-PBAT yokuleqa igolide yeyona inkulu eTshayina. Iiprojekthi zaseTshayina ezisasaza iikhemikhali ze-CHEMDO imveliso yePBAT yaseTshayina iya kunyuka iye kuthi ga kwi-400,000 t ngo-2022 ukusuka kwi-150,000 t ngo-2020.
Ixesha lokuposa: Feb-14-2022