Izicelo ezahlukeneyo zeselulosi kunye nezinto eziphuma kuyo

I-Cellulose yi-macromolecular polysaccharide eyenziwe nge-glucose, ekhoyo ngobuninzi kwizityalo eziluhlaza kunye nezinto eziphilayo zaselwandle. Yeyona isasazwe kakhulu kwaye inkulu imathiriyeli yendalo yepolymer kwindalo. Ine-biocompatibility elungileyo, iyahlaziyeka kunye ne-Biodegradable kunye nezinye izibonelelo. Ngephotosynthesis, izityalo zinokudibanisa amakhulu ezigidi zeetoni zeselulosi minyaka le.

IiProspects zeSicelo seSelulosi

I-cellulose yendabuko isetyenziswe ngokubanzi ngenxa yeempawu zayo ezibonakalayo kunye neekhemikhali, ngelixa i-cellulose yendalo ye-polymer yendalo ineempawu ezahlukeneyo zokusebenza emva kokucubungula kunye nokuguqulwa, okunokuhlangabezana neemfuno ezahlukeneyo zamashishini ahlukeneyo. Ukusetyenziswa okusebenzayo kwezinto ezisebenzayo ze-cellulose kuye kwaba yindlela yoPhuhliso lwendalo kunye neendawo zophando ze-polymer materials.

I-cellulose derivatives iveliswa yi-esterification okanye i-etherification yamaqela e-hydroxyl kwiipolymers ze-cellulose ezine-reagents zamakhemikhali. Ngokweempawu zolwakhiwo lweemveliso zokusabela, izinto eziphuma kwi-cellulose zinokwahlulwa zibe ngamacandelo amathathu: ii-cellulose ethers, ii-cellulose esters, kunye ne-cellulose ether esters.

1. Iselulosi ether

I-ether ye-cellulose ligama eliqhelekileyo loluhlu lwee-cellulose derivatives ezenziwe ngokusabela kwe-alkali cellulose kunye ne-etherifying agent phantsi kweemeko ezithile. I-ether ye-cellulose luhlobo lwe-cellulose derivative kunye neentlobo ezahlukeneyo, iindawo ezibanzi zokusetyenziswa, umthamo omkhulu wemveliso kunye nexabiso eliphezulu lophando. Ukusetyenziswa kwayo kubandakanya imimandla emininzi efana neshishini, ezolimo, ishishini lemichiza yemihla ngemihla, ukukhuselwa kwendalo, i-aerospace kunye nokhuselo lwelizwe.

I-cellulose ethers ezisetyenziswa ngokwenene kurhwebo zezi: i-methyl cellulose, i-carboxymethyl cellulose, i-ethyl cellulose, i-hydroxyethyl cellulose, i-cyanoethyl cellulose, i-hydroxypropyl cellulose kunye ne-hydroxypropyl methylcellulose Cellulose njl.

2. Cellulose esters

I-cellulose esters isetyenziswa ngokubanzi kwiinkalo zokhuselo lwelizwe, ishishini lemichiza, ibhayoloji, amayeza, ukwakhiwa kunye ne-aerospace.

I-cellulose esters esetyenziswa ngokwenene kurhwebo zezi: i-cellulose nitrate, i-cellulose acetate, i-cellulose acetate butyrate kunye ne-cellulose xanthate.
3. Iselulosi ether ester

I-ester ze-Cellulose zi-ester ezixube eziphuma kwi-ester.

Indawo yosetyenziso

1. Intsimi yamachiza

I-cellulose ether kunye ne-ester derivatives isetyenziswa ngokubanzi kwiyeza lokuqina, i-excipient, ukukhululwa okuqhubekayo, ukukhululwa okulawulwayo, ukwenza ifilimu kunye nezinye iinjongo.

2. Ibala lokugquma

I-cellulose esters idlala indima ebaluleke kakhulu kwizicelo zokugquma. I-Cellulose esters isetyenziswe kwii-binders, ii-resins ezitshintshiweyo okanye izinto zefilimu zangaphambili ukubonelela ngeengubo ezininzi ezintle kakhulu.

3. Intsimi yeteknoloji yeMembrane

I-Cellulose kunye nezinto eziphuma kuyo zineenzuzo zemveliso enkulu, ukusebenza okuzinzileyo, kunye nokuphinda kusetyenziswe. Ngokusebenzisa i-self-assembly-layer, indlela yokuguqulwa kwesigaba, itekhnoloji ye-electrospinning kunye nezinye iindlela, izixhobo ze-membrane ezinomsebenzi obalaseleyo wokwahlula zinokulungiswa. Kwintsimi yeteknoloji ye-membrane isetyenziswa ngokubanzi.

4. Indawo yokwakha

I-Cellulose ethers inamandla ejeli aphezulu aguqulwa nge-thermal kwaye ngoko ke aluncedo njengezongezo kumacandelo okwakha, njenge-samente-based adhesive adhesive additives.

5. I-Aerospace, izithuthi zamandla amatsha kunye nezixhobo zombane eziphezulu

I-cellulose-based based optoelectronic izinto ezisebenzayo zingasetyenziselwa kwi-aerospace, izithuthi zamandla amatsha kunye nezixhobo zombane eziphezulu.

6. Amanye amabala

Iingxaki kunye nezisombululo kwiSicelo seCellulose

Okwangoku, i-cellulose isenazo iintsilelo zendalo. Ngenxa yeempawu zesakhiwo sayo esidibeneyo, i-cellulose ayinakuncibilika kwaye kunzima ukuchithwa kwii-solvents eziqhelekileyo, ezinciphisa kakhulu ukuphuhliswa nokusetyenziswa kwezixhobo ze-cellulose. Okufana nokunganyibiliki kakuhle kwi-solvents eqhelekileyo, ukungabikho kwe-thermoplasticity, i-hydrophilicity ephezulu kunye nokungabikho kweempawu ze-antibacterial.

Ngoko ke, ukuyila kunye nokwakhiwa kwezinto ezintsha ezithathwe kwi-cellulose zisisiseko sokusetyenziswa ngokufanelekileyo kwe-cellulose, kunye nokuphuhliswa kobuchwephesha obucocekileyo kunye obusebenzayo bokuchithwa kwe-cellulose yindlela ebalulekileyo kunye nesiqinisekiso sokusetyenziswa ngokufanelekileyo kwe-cellulose.