HydroxyPropyl Methyl Cellulose hpmc ni ubwoko bwa selile itari ionic methymethixl carboxyme, kandi ntacyo yitwara. Bitewe n'ibipimo bitandukanye bya uburyo na hydroxypropyl ibirimo muri hydroxypropyl methylcellles, hamwe nuburyo butandukanye, imikorere miremire hamwe na hydroxyPropyle, imikorere yayo ni hafi yiya hydroxyPropyl methylcellse. Ariko, muburyo butandukanye, nubwo gusa umubare muto wa hydroxyPropyl cyangwa ingano ntoya yitsinda ririmo, kwikeba mubibazo bya kama cyangwa ubushyuhe bwa floctulat mubisubizo byanyuma biratandukanye cyane.
1.. Kudakemurwa kwa hydroxyPropyl methylcellse
①ubusa wa HydroxyPropyl Methyl Cellulose mumazi hydroxypropyl methyl oxyplene oxyplene), biracyafite imiterere imwe na methyl selile selile. Cellulose isa mumazi akonje yoroheje kandi amazi ashyushye afite ubuhanga. Ariko, kubera amatsinda yahinduwe yahinduwe, ubushyuhe bwa pelale mumazi ashyushye ni hejuru cyane kurenza ubw'ikirere. Kurugero, viscolity yibisubizo bitangaje bya hydroxyproppopyl methylcellse hamwe na memoxyl ibirimo 2% DS = 0.73 na hydroxyPropyl Ibirimo MS = 0 5 ° C. Ubushyuhe bwa ginele burashobora kugera kuri 100 ° C, mugihe methycellse ku bushyuhe bumwe bugera kuri 55 ° C. Ku bijyanye no kukengurwa mu mazi, nayo iratera imbere cyane. Kurugero, hydroxyproppopyl methylcellse (imiterere ya granular ya 0.2 ~ 0.2
②Ubibazo bya HydroxyPropyl Methyl Cellulose muri Organique Kudashobora Kureshya Ibicuruzwa biri hejuru y'ibicuruzwa biri hejuru HydroxyPropyl MS = 1.5 ~ 1.8 na FNYOXY DS = 0.2 ~ 1.0, hamwe na gahunda yose yo gusimbuza mehanorol na ethanol ibisubizo muri methanor, thermoplastique hamwe namazi. Birashonga kandi muri hydrocarbone nka dichloromethane na chloroform, no mubibazo bya kama nka acetone, inzoga za IsOprone. Kudakemurwa kwamagana ibicuruzwa biruta amazi.
2. Ibintu bireba viscosiya bya hydroxyPropyl methylcellse
Ibyiringiro bya HydroxyPropyl Methyl Mecosity Decojity Icyemezo gisanzwe cya HydroxyPropyl Methyl Methyl Methyl Methyl, ishingiye ku gisubizo cya 2% kuri 20 ° C. Ibyatsi byibicuruzwa bimwe byiyongera hamwe no kwiyongera kw'ibitekerezo. Kubicuruzwa hamwe nuburemere butandukanye bwa molekari icyarimwe, ibicuruzwa bifite uburemere bunini bwa molekari bifite ubushishozi bwo hejuru. Umubano wacyo nubushyuhe urasa nubwa methyl selile. Iyo ubushyuhe bwiyongereye, viscosity itangira kugabanuka, ariko iyo igeze ku bushyuhe runaka, viscosity yiyongera gitunguranye kandiga bibaho. Ubushyuhe bwa Gel bwo kurimbura ibicuruzwa hasi biri hejuru. ni hejuru. Icyerekezo cyacyo ntigifitanye isano gusa na vithesitike ya ether, ariko nanone ku kigereranyo cya uburyo na hydroxyproppoyl muri ether hamwe nurwego rwose rwo gusimbuza. Tugomba kumenya ko hydroxypropyl methylcellse nayo ni pseudoplastique nigisubizo cyacyo gihamye mubushyuhe bwicyumba usibye gutesha agaciro vicosity.
3. HydroxyPropyl Methylcellse acide na Alkali Kurwanya Alkali
HydroxyPropyl Methylcellse acide na Alkali Kurwanya Alkali HydroxyPropyl MethylcellPropyl methylcellse ihamye kuri aside na alkli, kandi ntabwo igira ingaruka ku rugero rwa PH 2 ~ 12. Irashobora kwihanganira umubare runaka wa aside. Nka acide ya piccique, acide acibi, aside ya citcique, acide ya facshoric, acide ya sositori, nibindi. Ariko, Acide yibanze, acide yibanze afite ingaruka zo kugabanya izo grecosiya. Alkali nka soda ya Caustic, amazi ya Caustic atagira ingaruka kuri yo, ariko arashobora kongera ubukwe bwigisubizo, hanyuma hazabaho ibintu byo kugabanuka gahoro mugihe kizaza.
4. Kuvanga hydroxyPropyl methylcellse
Kuba nabi bya hydroxypropyl methyl Methyl MetroxyPropyl Methyl Ibisubizo bya Cellmer birashobora guhinduka hamwe nigisubizo cya polymer cyo kuba umwanda munini. Ibi bigize polymer birimo Glycol, Polyvinyl acetate, polypiloxane, polymethyl vinylel sinyxyl, hydroxyAne sillexyl selile na methyl selile. Ibigo bya polymer karemano nka gum Icyarabu, inzige z'umunwa w'inzige, Karaya, nibindi kandi ufite byinshi bivanze nigisubizo cyacyo. HydroxyPropyl methylcellse irashobora kuvangwa na Mannitol cyangwa sorbitol porique ya acide cyangwa acide ya palmitique, kandi irashobora no kuvanga na glycerin, kandi sorbitil na mannitol. Ibi bikoresho birashobora gukoreshwa nka hydroxypropyl methylcellse. Selisiti ishingiye kuri plastistie.
5. Ubushobozi n'amazi yo Kukeba hydroxyPropyl methylcellse
Amazi yashongeshejwe namazi etherroxyproppoyl methylcellellse irashobora kuba hejuru-yambukiranyamo hamwe nigisubizo cyatewe nigisubizo kandi ihumeke mumazi. Igitabo gikora hydroxyPropyl methylcellsellse idashobora gushyiramo formaldehyde, glyoxehyde, ibishishwa byihariye bigomba kwishyurwa na formaldehyde, ibiti byihariye bigomba kwishyurwa na formaldehyde, ibibi byihariye bigomba kwishyurwa na FH valueldehde, nibindi byitaweho byihuse kubisubizo, muribyo glyoxal react yihuta. Kubwibyo, Glyoxal isanzwe ikoreshwa nkumukozi uhura mumusaruro winganda. Igipimo cyubu bwoko bwimigindikishwa nigisubizo ni 0.2% ~ 10% ya masa ya ether, nibyiza 7% ~ 10%, na 3. 6% nibyo cyane kuri glyoxal. Ubushyuhe rusange bwo kuvura ni 0 ~ 30 ℃, kandi igihe ni 1 ~ 120min. Guhuza imyuka bigomba gukorwa muburyo bwa aside. Mubisanzwe, acide acide acide cyangwa acide kama yongeweho kugirango uhindure ph yumuti ugera kuri 2 ~ 6, nibyiza kongerwaho kugirango usohoze uko yahuje. . Acide yakoreshejwe harimo aside hydrochloric, aside sulfuric, acide ya fosike, acire, acire, acire Acide na Aldehyde barashobora kandi kongerwaho icyarimwe kugirango bakemerera igisubizo cyo kwambukiranya PH. Iyi myitwarire ikoreshwa kenshi mubikorwa byanyuma byo kuvura mubikorwa byo gutegura aba bahanganye na selile. Nyuma ya selile ether irashonga, biroroshye gukaraba no kweza amazi kuri 20 ~ 25 ° C. Iyo ibicuruzwa bikoreshwa, ikintu cya alkaline gishobora kongerwaho kubicuruzwa kugirango uhindure PH yumuti wo kuba alkaline, kandi ibicuruzwa bizashonga mubisubizo vuba. Ubu buryo nabwo burakoreshwa kumurongo wa selile ya ether yakozwe muri firime hanyuma film itunganijwe kugirango ikore film.
6. HydroxyPropyl Methylcellse irwanya Enzymes
HydroxyPropyl Methylcellse irwanya Enzymes. Mu nyigisho, ibikomoka kuri selile, nka buri tsinda rya buri anhyGucocose, bafite itsinda risimbuwe, ridasobanura ko agaciro ka seligo, ariko mubyukuri bikaba byanduye. Amatsinda adahigatiwe anhydroglucose yo gushiraho isukari. , ziterwa nintungamubiri za mikorobe. Kubwibyo, niba urwego rwo gusimbuza kwangirika kwiyongera, kurwanya isuri yuzuye ya selile nayo irazamurwa. Biravugwa ko ubushyuhe busigaye bwa hydroxyproppopyl methylcellse (DS = 1.9) ni 7.3%, na methycellyel (DS = 1.66, na hydroxyEllyl selile ni 1.7%. Birashobora kugaragara ko anti-enzyme ubushobozi bwa hydroxyproppopyl methylcellse irakomeye. Kubwibyo, enzyme nziza yo kurwanya hydroxypropyl methylcellse, ihujwe nuburyo butaziguye, muri rusange bikoreshwa mumazi-ya emulsion, kandi muri rusange ntibisaba kongerera hamwe. Ariko, kububiko burebure bwigisubizo cyangwa umwanda ushoboka wisi, hashobora kongerwaho nkibirinde, kandi guhitamo birashobora kugenwa hakurikijwe ibisabwa byanyuma byigisubizo. Phenylmercuric acetate na manganeya biratunganya neza, ariko bafite uburozi bwombi, kandi hagomba kwitondera kubahirizwa, kandi dosage muri rusange 1 ~ 5mg ya phenylmercuric acetate.
7. Ibintu bya hydroxypropyl methylcellse film
Imikorere ya hydroxypropyl methylcellse film hydroxypropyl methylcellpirall methylcellellse ifite ibintu byiza bya firime, kandi biba ibara ryiza ryakozwe ku isahani, kandi bihinduka ibara kandi rifite ibara nyuma yumurongo. Na firime ikomeye. Ifite ubushuhe bwiza kandi ikomeza gukomera mubushyuhe bwo hejuru. Kurugero, ongeraho Plastizic Plastizic irashobora kongera kubaho no guhinduka. Kunoza ibintu byoroshye, plastistizers nka glycerin na sorbittiol nibyosol bikwiriye cyane. Igisubizo rusange ni 2% ~ 3%, kandi ingano ya plastistizer ni 10% ~ 20% ya selile. Niba ibikubiye muri plastisar ari hejuru cyane, imyanda ya Colloid ya Colloid ibaho izaba imeze nkubushuhe. Imbaraga za tensile ya firime hamwe na plastisar yongeyeho ni nini cyane kuruta uko idafite plastistizer, kandi iriyongera hamwe no kongera amafaranga yinyongera. Naho hygroscopique ya firime, iriyongera kandi kongera umubare wa plastisar.
Igihe cyagenwe: Feb-20-2025