Hydroxyyl seluplosesisifo esibalulekileyo sesellulose. Ngenxa yezibonelelo zobutyebi bezinto ezibonakalayo ezinqabileyo, ezihlaziyiweyo, ezihlaziyiweyo, ezingenabutywala, ezingenabunzi, kunye nesivuno esikhulu, uphando kunye nesicelo sitsalele ingqalelo kakhulu. . Ixabiso le-Viscofity yisalathiso sentsebenzo ebaluleke kakhulu ye-hydroxyythl sellyulose. Kweli phepha, i-HydroxyEtheetheetheetheetheetheetheetheetheeth ngexabiso le-viscosity elingaphezulu kwe-5 × 104miparo kunye nexabiso le-ASH kunye ne-ASH PATE-STENCHISIIS YOKUFUNDA NOKUSETYENZISWA KOKUSETYENZISWA KOLWAZI NOKUFUNDA I-AMALUNGISELELO SOKUGQIBELA.
Inkqubo ye-alkali iyoyinkqubo yokulungiselela iAlkali SellUlose. Kweli phepha, iindlela ezimbini ze-alkaliy zisetyenziswa. Indlela yokuqala kukusebenzisa i-acetone njengelila. Isixhobo esiyi-selsulose Stowing siwiswe ngokuthe ngqo ekugxilwe ngokuthe ngqo kwi-sodium ye-sodium hydroxide. Emva kokuba intetho yeXesha leXesha lenziweyo, iarhente ye-estile eyongezwa ngokuthe ngqo iqhuba ngokuthe ngqo indlela yokuphendula. Eyona ndlela yesibini kukuba izinto ezingaselunxwemeni zifakwe kwisisombululo se-SODIim hydroxide kunye ne-Urea, kunye ne-alkali selsulose elungiselelwe ukususa i-eather ngaphambi kokuba i-Etheetisition yeyokuphendula. I-alkali selsulose elungiselelwe ngeendlela ezahlukeneyo ihlalutyelukiswa yi-infrared switcrascopy kunye ne-X-ray. Ngokweepropathi zeemveliso ezilungiselelwe yi-Etheristition, indlela yokhetho igqityiwe.
Ukwenzela ukufumanisa eyona nkqubo ye-synthesi yokufundisa, indlela yokuphendula ye-antioxidant, i-LYE kunye ne-GYE kunye ne-GOCATIC ACCECS kwi-EATICE yokuphendula yahlalutywa kuqala. Emva koko yenza inkqubo yovavanyo yendlela enye yokuphendula, chaza izinto ezinefuthe elinamandla kwintsebenzo ye-hydroxyEseyl ye-hydroxethy, kwaye usebenzise i-viscofity ye-2% yemveliso yemveliso. Iziphumo zovavanyo zibonisa ukuba izinto ezinje ngemali ekhethiweyo ye-ithylene oxide, ixesha lokuphendula, ubushushu kunye nexesha lokuphendula kwesibini zonke zinempembelelo enkulu ekusebenzeni imveliso. Isikimu sokuvavanywa kwe-orthogonali esinezinto ezisixhenxe kunye namanqanaba amathathu asondela, kwaye i-culve ijika icinyiwe kwiziphumo ezibonakalayo zinokuhlalutya izinto eziziiprayimari kunye neflethi. Ukwenzela ukulungiselela iimveliso ezinamaxabiso aphezulu obu-viscofity, iqhinga lokuvavanywa eliphelileyo lalinyiselwe, kwaye iskimu esifanelekileyo sokulungiselela i-hydroxythyl seluplose igqitywe kwiziphumo zovavanyo.
Iipropathi ze-viscofity ephezuluhydroxyyl seluplosebahlalutyile kwaye bavavanywa, kubandakanya ukumiselwa kwe-viscofity, umxholo, ukuhambisa ukukhanya, umxholo we-nuncial, njl. Ukuhlalutya kunye nokubonisa imeko yemveliso, iyunifomu yokufakelwa okuthathekayo, i-molar endaweni ye-molar Faka, i-crystallity, uzinzo lovavanyo lubhekisa kwimigangatho ye-ASTM.
I-HydroxyEtheetheetheetheetheetheetheethl seluplose, i-selsulose ebalulekileyo yeselsulose, itsalele ingqalelo ngenxa yezixhobo zayo ezinqabileyo, ezihlaziyiweyo, ezinokuhlaziywa, ezinokuhlaziywa, ezinokutsha, i-biobgrades, kunye nesivuno esikhulu. Uhlobo lwe-viscosity ye-hydroxyteethyl seluplose ngophawu olubaluleke kakhulu lokusebenza kwayo. I-vickosity ye-hydroxyythyl seluplose ingaphezulu kwe-5 × 104Mparo, kunye nomxholo we-Ash ungaphantsi kwe-0.3%.
Kweli phepha, i-vickosity ye-hydroxyylyl seluplose ilungiselelwe yindlela ye-synthesis ye-synthesis nge-alkalition kunye nesiko. Inkqubo ye-alkali ilungiselelwe i-alkali seluplose. Khetha iindlela ezimbini ze-alkali. Enye yeyokuba izinto zeselsulose zifakwe ngokuthe ngqo nge-acetolo njenge-acetone njenge-icebisi kwi-ACDROIIC ye-ICYDROIIC yeSondo, emva koko iphinde ithathe iarhente yokuphendula. Enye yeyokuba izinto zeselfowuni zifakwe kwisisombululo seSodium yeSodium hydroxide ne-Urea. I-alkali egqithisileyo kwi-alkali selulose kufuneka isuswe ngaphambi kokuphendula. Kweli phepha, iiseli ezahlukeneyo ze-alkali zifundwa ngu-infrared spectroscopy kunye ne-X-ray. Okokugqibela, le ndlela yesibini yamkelwe ngokweepropathi zeemveliso ze-ether.
Ukwenzela ukufumanisa amanyathelo afanelekileyo e-etheriya, indlela yokuphendula ye-Antioxidant, iAlkali kunye ne-Alkali kunye ne-Alkali Acetic kwinkqubo yokutya yafundwa. Izinto ezichaphazela ukulungiswa kwe-hydroxyEsethl yeseluplose igqitywe lulingo olunye. Ngokusekwe kwixabiso le-viscosity yemveliso kwi-2% ye-acteous. Iziphumo zovavanyo zibonisa ukuba ivolumu ye-diucent, ubungakanani be-i-i-e-itholene oxide, ixesha lokuphumla, ubushushu kunye nexesha lokuphinda-phinda nenqanaba lesibini linempembelelo enkulu kwimveliso yemveliso. Indlela yezifundo ezisixhenxe kunye namanqanaba amathathu ayamkelwa ukujonga eyona ndlela iphambili yokulungiselela.
Sihlalutya iipropathi zezinto ezilungiselelwehydroxyyl seluplose, including viscosity, ash, light transmittance, moisture, etc. The structural characterization, substituent homogeneity, substitution molarity, crystallinity and thermal stability were discussed by infrared, nuclear magnetic resonance, gas chromatography, X-ray diffraction, DSC and DAT, and the Iindlela zovavanyo zamkela imigangatho ye-ASTM.
Ixesha leposi: Apri-25 ukuya ku-2424