Ukwahlulahlulwa kunye neempawu zebanga lebanga lokwakha

(I-methyl chloride) (MC) (MC) Ifomula yemolekyula \ [c6h7o2 (oh) 3-H) I-3-H) I-Alkali, kwaye i-methyl chloride isetyenziswa njenge-arhente yophuhliso. Emva kothotho lweempendulo, impatho ye-Selese isenziwa. Ngokubanzi, inqanaba lokufakwa endaweni le-1.6 ~ 2.0, kwaye inqanaba lokufaka endaweni yahlukile. Yeyokutshekisha i-enic sete

I-1. I-Methylcelculose inyibilikisa emanzini abandayo, amanzi ashushu aya kudibana nobunzima, kwaye i-pH ye-PH yesona sisombululo sinokuzinza kakhulu phakathi kwe-3/12. Isitatshi, i-gum yegasi kunye nezinye izinto ezininzi ezikhoyo ziyahambelana. Ukuhlakulelwa kwenzeka xa iqondo lobushushu lifikelela kubushushu bendawo yokuhlaselwa.

Ukugcinwa kwamanzi kwe-methylcelculose kuxhomekeke kwixabiso elongeziweyo, i-viscofity, ukulunga kwemvume kunye nenqanaba lokuchitha. Ngokubanzi ikhubelwe ngokubanzi, i-viscosity encinci, ephezulu, igcinwe ngamanzi aphezulu. Phakathi kwazo, ukugcinwa kwamanzi kunefuthe eliphezulu, kwaye inqanaba lokufumana i-viscosity alingqinelani ngqo ekugcinweni kwamanzi. Inqanaba lokuchithwa ikakhulu lixhomekeka kwinqanaba lokutshintsha komphezulu wesuntswana kunye nobulungisa bamasuntswana. Phakathi kwezi zinto zisentla, Methyl seluplose kunye ne-Hydroxypropyl Methyl Selalose anyanzela amanzi aphezulu.

Utshintsho lobushushu lunokuchaphazela kakhulu ukugcinwa kwamanzi kwe-methyl sellulose. -Umgangatho ophezulu wobushushu, kokukhona okusemagqabini ekugcinweni kwamanzi. Ukuba ubushushu obuphango bungaphezulu kwe-40 ° C, ukugcinwa kwamanzi kwe-methyl seluplose kuya kuncitshiswa kakhulu, kuchaphazele kakhulu ukwakhiwa kodaka.

UMethylcelupalup lube nefuthe elibonakalayo ekusebenzeni nasekubetheleni. "Inamathelelwe" apha apha ibhekisela kububi phakathi kwesixhobo somsebenzi womsebenzi kunye nodonga, oko kukuthi, ukumelana nodaka. Uhlobo lwe-viscosity, amandla oHardar, kunye namandla afunekayo ngabasebenzi abasetyenziswayo nako kakhulu, kwaye ulwakhiwo ngodaka alulunganga. I-methylcelfulose inamathele kumanqanaba aphakathi kwimveliso ye-Seler.

2. I-HYDROXCOPLL Methylcelcelsele (i-HPMC) [H 6 h 7 (O)) I-M, i-2] M, i-OCH 2] N. Yisel-ionic selsulose isete ye-ether elungiselelwe luthotho lokuphendula emva kokupheliswa kwe-Alkali ehlaziyiweyo, apho i-proplide oxide oxide kunye ne-methyl chloride isetyenziswa njengeearhente zokuthengisa. Inqanaba lokufaka endaweni yi-1.2 / 2.0. Iipropathi zayo ziyahluka ngokomyinge we-playitingsyl kunye nomxholo we-hydroxypropy.

I-1. I-HydroxdPOpyl Methylcelceltulose yahlulwahlulwa yohlobo olushushu kunye nohlobo lwethutyana. Iqondo lokuhlalo layo lokuhlaselwa kwamanzi ashushu liphezulu kakhulu kune-methylcelculose. Ikwabonisa ukuphuculwa okukhulu ngaphezulu kwe-methylceluplose xa inyibilika emanzini abandayo.

I-viscosity ye-hydroxypropyl methylcelcelsulose inxulumene nobunzima bemolekyuli, kwaye ubunzima bemolekyuli buphezulu. Ubushushu buchaphazela i-viscofity yayo, njengoko amaqondo obushushu ayanda, i-viscosity ihla. Nangona kunjalo, ifuthe lobushushu kwi-viscosity liphantsi kune-methyl seluplose. Isisombululo sisitotshiziweyo esizinzileyo kubushushu begumbi.

3. Ukugcinwa kwamanzi kwe-HydropylCopyl Methylcelgalose kuxhomekeke kwixabiso lokudibanisa, i-viscofity, njl njl., Njl njl.

I-4. I-HydroxyPOpyl Methylcelcelgalose iZiziseko kwi-Acid kunye ne-Alkali, kunye nesisombululo se-ALKALA esinzileyo Intsebenzo ye-caustic soda kunye namanzi e-lime ayinampembelelo eninzi, kodwa ialkali inokukhawulezisa izinga lokuchitha, kwaye i-vickosity inyuke. I-HydroxyPOpyl Methylcelcelgalose iZinzile kwi-SATTs eqhelekileyo, kodwa xa uxinzelelo lwesohlwayo luphezulu, i-viscosity ye-hydroxlypropyl methylcelces isisombululo sithanda ukunyuka kwesisombululo.

I-Hydroxypropyl Methylcelcelcelsulose inokuxutywa kunye ne-polymers enyibilikayo ukwenza iyunifomu, isisombululo esiphezulu. Ezinjenge-polyvinyl utywala, i-starch ether, i-gum yemifuno, njl.

I-Hydroxypropyl Methylcelcelgalose inomlinganiso ongcono we-enzyme kune-methylceluplose, inokwenzeka yokuphelisa i-Etzymatic isisombululo, kwaye ukunamathela kwe-hydropyluplmethylceluplose. isiseko seseli.

Zintathu, i-HydroxyEtheetheetheethy (Hec) yenziwa kwiCotton ehlaziyiweyo ephathwe ngeAlkali, phambi kwe-acetone, kunye ne-Ethylene oxide njenge-arhente yokwenyama. Inqanaba layo lokufaka endaweni yi-1.5 / 2.0. Inombala oqinileyo kwaye kulula ukuyifumana ukufuma.

I-1. I-HydroxyEtheetheetheetheetheetheethy inyibilikisi emanzini abandayo, kodwa kunzima ukunyibilikisa amanzi ashushu. Isisombululo sizinzile kubushushu obuphezulu kwaye asinazo iipropathi zejell. Ingasetyenziselwa ixesha elide kumfanekiso onamaqondo amaqondo aphezulu, kodwa ukugcinwa kwamanzi kwawo kusezantsi kune-methyl sellyulose.

2. I-HydroxyEtheetheetheetheetheetheetheetheetheetheetheetheetheetheethl sisitagana esihlala sikwi-acid jikelele kunye ne-alkali. UAlkali wakukhawulezisa ukupheliswa kwayo, kwaye ukubonwa kwayo kuyanda kancinci. Ukusasazeka kwayo emanzini kubi kakhulu kune-methyl seluplosey kunye ne-hydroxypropyl methyl sethylise.

I-3. I-HydroxyEtheetheetheetheetheetheetheetheetheetheetheetheetheeth inomsebenzi ombi we-anting of Dubing of Anti-Halan of Dubling kwi-TARD, kodwa ixesha elide, i-HydroxyEtheetheethl isezantsi ye-methyl ye-methyl ye-methyl ye-methyl ye-methy.

I-4. Iqondo lokufakwa endaweni yi-0.4 / 1.4, kwaye inqanaba lokufaka endaweni linempembelelo enkulu ekusebenzeni.

I-carboxeymethyl sellicescofity inozuko oluphezulu, kwaye iimeko zokugcina ngokubanzi zinamanzi amaninzi.

I-2. I-Carboxymethyl Seleous Isuplose i-ACEL, i-viscosity ihlakulela xa iqondo lobushushu liphuma, kwaye i-viscosity ayinakuphikiswa xa ubushushu obungaphezulu kwe-50 ° C.

Uzinzo lwayo luchaphazeleka kakhulu yiPH. Ngokubanzi isetyenziselwe i-gyppum yodaka, hayi ngenxa yokuthamba. Kwimeko ye-alkalinity ephezulu, iyakuphulukana noVoluke intcoloty.

Ukugcinwa kwayo kwamanzi kusezantsi kakhulu kunaleyo ye-methyl seluplose. U-Gyppum udaka unesiphumo sokubuyisa, ukunciphisa amandla. Kodwa ixabiso lebhokisi yebhokisi ye-carboxymethyl isezantsi kakhulu kune-methyl sellyulose.