I-Starch efers iyindlela eshintshiwe yesitashi esethole ukunakwa okubanzi ezincelweni ezahlukahlukene zezimboni ngenxa yokusebenza kwazo kanye nezakhiwo ezihlukile. Ngenkathi kuvame ukusetshenziswa ezinamathela ngamakhono aso bodwa, ukufaneleka kwayo kwezindawo eziphakeme zokushisa kuncike ezicini eziningana.
1. Isingeniso ku-Starch Ether:
AbakwaStarch Abathathi batholwa isitashi bendabuko, okuyi-polysaccharides etholakala ezitshalweni. Ngokuguqulwa kwamakhemikhali, imvamisa kubandakanya ukusheshisa, izitha zeStarch zikhiqizwa ukuze zithuthukise izakhiwo zazo futhi zibenze zilungele izinhlelo ezithile. Inqubo yokuguqulwa ishintsha izakhiwo ze-hydrophilic ne-hydrophobic ye-starch, ngaleyo ndlela yenza ngcono ukuqina, ukusongela kanye nezinto ezimbongini.
2. Izakhiwo zeStarch Ether:
AbakwaStarch Abathathi banezakhiwo ezimbalwa ezibalulekile ezizenza zikhange ngezinhlelo ezahlukahlukene zezimboni, kufaka phakathi anamathela. Lezi zakhiwo zifaka:
A. Amanzi ancibilikayo: Abathengisi beStarch bangamanzi ancibilika futhi bangafakwa kalula ekuhlolweni kokunamathela futhi bakhuthaze izakhiwo ezinhle zokumanzisa.
b. Ikhono elenziwa ngefilimu: Abathengisi beStarch bangakha amafilimu asiza ukunamathela emgqeni futhi anikeze amandla ezinto ezinamathela.
C. Shidener: Isebenza njengesikhulu ekunikezelweni kokunamathela, okuthinta i-viscosity kanye nokwenza ngcono izici zohlelo lokusebenza.
d. I-BiodegradeAbilibility: Izimpi zeStarch zithathwe kwizinsizakusebenza ezivuselelekayo futhi ngenxa yalokho zinobungani bemvelo futhi zilungele izinhlelo zokusebenza ezigxile ekusimeni.
3. Izicelo ezinamathela ezinamathela kwesitashi ether:
Abathakathi beStarch bangasetshenziswa ekwakhekeni okuhlukahlukene okunamathelayo, njengokuthi:
A. Amaphepha okunamathisela amaphepha kanye nama-adgesives: Izimpi zeStarch zivame ukusetshenziswa emaphepheni nasezindaweni ezinamathele ngenxa yezakhiwo zazo ezinamafilimu nezinamathela.
b. Adhesives wokwakha: I-solubility yamanzi kanye nekhono elikhulayo le-starch ether lenza lilungele ukusetshenziswa njengezifiso zokwakha ukusiza izinsiza zokwakha izibopho.
C. Adhesives Wood: Embonini yezokusebenza kwezinkuni, izithambiso zesitashi zisetshenziswa ekunamatheleni kwezinkuni ukuze athuthukise amandla e-bond futhi anikeze uzinzo.
d. Izithasiselo zezindwangu: Isitashi ether sisetshenziselwa ukunamathela kwezindwangu ngenxa yekhono laso lokuhlanganisa imicu futhi andise amandla endwangu.
4. Ukusebenza endaweni yokushisa ephezulu:
Ngezicelo lapho kuhlangana khona namazinga okushisa aphezulu, ukusebenza kwezithambisi ezishisayo ezindaweni eziphakeme zokushisa kungukucatshangelwa okubucayi. Kunezici eziningana ezithinta ukusebenza kwalo kulokhu:
A. Ukuqina okushisayo: Izimpi zeStarch zibonisa ama-degree ahlukahlukene wokuqina okushisayo kuya ngesilinganiso sabo sokufakwa esikhundleni kanye nokuguqulwa okuthile kwamakhemikhali okusetshenzisiwe ngesikhathi senqubo yokusheshisa.
b. Ukushisa kwe-gelatinization: Ukushisa kwe-gelatinization of Starch Ether kuyindlela esemqoka ezihlelweni zokushisa okuphezulu futhi kuzothinteka ngesisindo sayo samangqamuzana kanye nezinga lokufaka esikhundleni.
C. Ukuguqulwa kwe-Viscosity: Amazinga okushisa aphezulu angashintsha ukubonwa kokunamathela okunama-starch afes. Ukuqonda lezi zinguquko kubalulekile ekuqinisekiseni ukusebenza okungaguquki kokunamathelayo.
d. Amandla e-Bond: Amandla ebhondi wokwakhiwa okuqukethe izitashi zingathinteka izinga lokushisa, ngakho-ke ukuqonda okuphelele kwezidingo ezithile zesicelo kuyadingeka.
5 Isu lokuguqulwa lokuqina okushisa okuphezulu:
Ukuze uthuthukise ukusebenza kwe-Starch Ether ezindaweni eziphakeme zokushisa, amasu alandelayo wokuguqulwa angamukelwa:
A. Ukuxhumanisa: Ukuxhumanisa isitayela e-Ether Molecule kwandisa ukuqina okushisayo kanye nokumelana nokuguqulwa kokushisa okuguqulwe.
b. Ukuhlanganiswa ngama-polymers amelana nokushisa
C. Ukuguqulwa kwamakhemikhali: Ukuguqulwa okuqhubekayo kwamakhemikhali, njengokungeniswa kwamaqembu asebenza ngokuvimbela ukushisa, kungabhekiswa ekutholeni izithasishi zesitashi sezinkanyezi zokushisa okuphakathi.
6. Izifundo zamacala nezinhlelo zokusebenza ezisebenzayo:
Ukuhlola izifundo zecala langempela-emhlabeni kanye nezicelo ezisebenzayo zinikeza ukuqonda okubalulekile ekusebenzeni kwezitha zeStarch zisendaweni ephezulu yokushisa. Izimboni lapho ukumelana nokushisa okulwa khona, njengezimoto, i-aerospace ne-elekthronikhi, kunganikeza izibonelo ezibalulekile.
7. Ukucatshangelwa Kwezemvelo:
Njengoba ukukhathazeka kwezemvelo kubaluleke kakhulu, i-biodegramabilibility of Starch ethers yengeza inzuzo enkulu. Ukuhlola umthelela wezemvelo wokwakheka okunamathela okuqukethe izithambisi ezisetshenziswayo zokushisa okuphezulu kwezicelo ezizinzileyo.
8. Izikhombisi ezizayo namathuba okucwaninga:
Ukucwaninga okuqhubekayo nokuthuthukiswa emkhakheni weStarch Ether Ukuguqulwa kungavula amathuba amasha okufaka isicelo sawo ezindaweni ezishisa kakhulu. Ukuhlola amasu wokuguqulwa kwenoveli, ukuqonda izindlela eziyisisekelo zokuqina okushisayo, nokuhlonza ama-synergies namanye ama-polymers kuyizindawo ezifanele zophenyo.
9. Isiphetho:
Ngamafuphi, izithambisi zesitashi zithembisa abazongenela ukhetho ngezinhlelo zokusebenza ezinamathela, zinalo uhla lwezakhiwo ezifiselekayo. Ukusebenza kwayo ezindaweni eziphakeme zokushisa kuncike ekucabangeni ngokucophelela kwezici ezinjengokuqina okushisayo, izinga lokushisa le-gelatinization kanye namandla e-bond. Ngokuguqulwa kwamasu kanye nokwakheka okusha, izithambiso zesitashi zingalinganiswa ukubhekana nezinselelo ezithile ezibangelwa amazinga okushisa aphezulu, ukuvula izindlela ezintsha zokusetshenziswa kwazo ezimbonini lapho ukumelana nokushisa kubucayi khona. Njengoba ucwaningo luqhubeka, indima yezinhlanga ze-starch ezisetshenziswayo ezinama-adhesive kungenzeka yandise, iqinisa futhi isikhundla sayo njengezithako eziguquguqukayo nezinzile.
Isikhathi Sokuthumela: Dec-02-2023