Diyaarinta iyo sifooyinka jireed ee hydroxypropyl istaarijka ether

Hydroxypropyl starch ether (HPStE) waxaa lagu diyaariyaa hannaan wax ka beddel kiimiko ah oo ku lug leh soo bandhigida kooxaha hydroxypropyl ee molecule istaarijka.Habka diyaarinta ayaa caadi ahaan ku lug leh tallaabooyinka soo socda:

1. Xulashada istaarijka: istaarij tayo sare leh, oo sida caadiga ah laga helo ilaha sida galleyda, sarreenka, baradhada, ama tapioca, ayaa loo doortaa sida alaabta bilawga ah.Doorashada isha istaarijka ayaa laga yaabaa inay saameyn ku yeelato sifooyinka sheyga ugu dambeeya ee HPStE.
2. Diyaarinta Xadhkaha Istaarjka: Istaarijka la doortay ayaa lagu kala firdhiyaa biyaha si ay u sameeyaan koollada istaarijka.Xabagta waxaa lagu kululeeyaa heerkul gaar ah si loo jelatiyo granules istaarijka, taasoo u oggolaanaysa fal-celin wanaagsan iyo dhexgalka reagents ee tallaabooyinka wax ka beddelka ee xiga.
3. Falcelinta Etherification: Xabagta istaarijka ee jelatinized ayaa markaas lagu falceliyaa propylene oxide (PO) iyada oo ay jirto wax kicinaya xaaladaha la xakameeyey.Propylene oxide waxay la falgashaa kooxaha hydroxyl (-OH) ee molecule istaarijka, taasoo keentay in kooxaha hydroxypropyl (-OCH2CH (OH) CH3) ay ku xidhmaan laf dhabarta istaarijka.
4. Dhexdhexaadinta iyo Nadiifinta: Ka dib falcelinta etherification, isku darka falcelinta waa dhexdhexaad si meesha looga saaro wixii xad-dhaaf ah reagents ama kiciyaasha.Natiijadii ka soo baxday ether-ka istaarijka hydroxypropyl ayaa markaa lagu sifeeyaa hababka sida sifaynta, dhaqidda, iyo qalajinta si looga saaro wasakhda iyo kiimikooyinka haraaga ah.
5. Hagaajinta Cabbirka Qaybaha: Hababka jidheed ee HPStE, sida cabbirka walxaha iyo qaybinta, waxa lagu hagaajin karaa habsocod-shiidid ama shiidid si loo gaadho sifooyinka la doonayo ee codsiyada gaarka ah.

Astaamaha jireed ee istaarijka hydroxypropyl ether way kala duwanaan karaan iyadoo ku xiran arrimo ay ka mid yihiin heerka beddelka (DS), miisaanka kelli, cabbirka walxaha, iyo xaaladaha habaynta.Qaar ka mid ah guryaha caadiga ah ee HPSTE waxaa ka mid ah:

1. Muuqashada: HPStE caadi ahaan waa budo cad ama caddaan ah oo leh qaybin xajmi ah.Qaab-dhismeedka qurubku waxa uu ku kala duwanaan karaa qaab wareegsan ilaa qaabab aan joogto ahayn iyadoo ku xidhan habka wax soo saarka.
2. Cabbirka Qaybaha: Cabbirka walxaha HPStE wuxuu u dhexeeyaa dhowr mikromitir ilaa tobanaan mikromitir, oo saameyn weyn ku leh kala firdhisanaanteeda, milmaheeda, iyo shaqeynteeda codsiyada kala duwan.
3. Cufnaanta Bulk: Cufnaanta badan ee HPStE waxay saamaysaa socodka, sifooyinkeeda maaraynta, iyo shuruudaha baakadaha.Caadi ahaan waxa lagu cabbiraa garaam halkii sentimitir kuyuubik (g/cm³) ama kiiloogaraam litirkiiba (kg/L).
4. Solubility: HPStE kuma milmi karaan biyo qabow laakiin way ku kala firdhi karaan oo ku barari karaan biyo kulul, samaynta xalal viscous ah ama jeel.milanka iyo sifooyinka fuuq-celinta ee HPStE way kala duwanaan karaan iyadoo ku xidhan arrimo ay ka mid yihiin DS, miisaanka unugyada, iyo heerkulka.
5. Viscosity: HPStE waxay soo bandhigaysaa dhumucdi iyo rheological guryaha hababka aqueous, saamayn viscosity, habdhaqanka socodka, iyo xasiloonida qaabaynta.Viscosity ee xalalka HPStE waxay ku xiran tahay arrimo ay ka mid yihiin diiradda, heerkulka, iyo heerka xiirid.
6. Heerka fuuq-baxa: Heerka fuuq-baxa ee HPStE waxaa loola jeedaa heerka ay ka nuugta biyaha iyo barar si ay u sameeyaan xalal viscous ama jel.Hantidan ayaa muhiim u ah codsiyada halka fuuq-bax degdeg ah iyo dhumuc looga baahan yahay.

diyaarinta iyo sifooyinka jirka ee hydroxypropyl istaarijka ether waxaa loogu talagalay si ay u buuxiyaan shuruudaha codsiga gaarka ah iyo shuruudaha waxqabadka, samaynta wax lagu daro ah oo badan oo qiimo leh ee warshadaha kala duwan iyo qaababka.