He aha te hydroxypropyl methyl cellulose hpmc?

Ko te hydroxypropyl methyl cellulose HPMC he momo koretake o te cellulose whakaranu i roto i te momo momo me te carxymetye cellupose whakaranu. Ko nga tohu o te hāora na te hydroxypropyl methyl ihirangi me nga waahanga rereke, ko te kaupapa me te iti o te mahinga me te iti o te hydroxypropy Nga momo, a ko te mahi tata ki te hydroxypropyl cellullose e whakaputaina ana. Engari i roto i ia momo, ahakoa ko te iti noa o te hydroxypropyl, he iti noa ranei o te methoxy, te whakaheke i te whakarewatanga o te whakarewa, te whakaraeraetanga ranei o te pāmahana i roto i te otinga o te waikawa, he rereke te rereketanga.
 
1, hydroxypropyl methyl cellulase sellusity
Ko te CellroxyProp Cellularose o te hydroxypropyl cellulise he momo proplene kowhatu, na reira he rite tonu te ahua o te waikawa methyl. Heoi, ko te pāmahana o te tipu o te hydroxy whakarerekētia he nui ake i te mea ko te cellulose methyl i roto i te wai wera. Hei tauira, ko te matawai o te rongoa hydroxypropyl te otinga mo te 2% ihirangi athoxy ds = 0.73 me te hydroxypropyl ms = 000 mba i te 20 ℃. Ko te pāmahana o te tipu o te hua e tata ana ki te 100 ℃, i te wa ano o te cellulose methyl o te pāmahana kotahi noa iho ki te 55 ℃. Mo te whakaraeraetanga i roto i te wai, ka tino pai ake, hei tauira, i muri i te kuru o te hydroxypropyl methylcelllolose (te ahua o te hua o te 2 ki te rewa i te wai o te 2.
 
(2) Ko te Cellubility CelvroxyPyl hydroxypropyl o te hydroxyprose sellubility, he pai ake i te selluposic or. DS = 0.2 ~ 1.0, te ahuareka o te hydroxypropyl methyl i runga ake i te 1.8 he rewa i runga i te methydrous me te whakaraeraetanga me te waitanoko. He rewa ano i roto i nga hydrocarbons chirumoana penei i te dichlotortathane me te trichloomethane, me nga whakarewa i te organic, te waipiro isopropyl, me te waipiro haurangi. Ko te whakariterite i roto i nga whakarewa o te tipu he pai ake te whakamahinga o te wai.
 
2, hydroxypropyl methyl cellulose forcliciond of the forcesturesting
Ko te ahua o te mate urdroxypropyl o te hydroxyproplose ko te ahua o te celdroxyprollose paerewa paerewa, me etahi atu cellulose he rite, kei te 20% te otinga o te paerewa. Ko te tirohanga o te hua kotahi, me te piki o te kukume me te piki ake o nga hua taumaha o nga hua taumaha, he nui te taumaha o te taumaha o te hua. Ko tana whanaungatanga me te pāmahana he rite ki taua cellulose methyl. Ka tae mai te pāmahana, ka tiimata te heke, engari ka tae ana ki tetahi pāmahana, ka ara ake te tirohanga me te kohutanga. Ko te pāmahana o te tipu o nga hua me te iti o te ahuareka kei runga ake i nga hua me te tino tirohanga. Ko te taumata o tona tohu gel, hei taapiri i te ahua teitei me te iti o te ahua o te eter, engari me te athoxy eterroxypropyl ropu roopu roopu e hono ana. Me tohuhia ko te ahhautanga hydroxypropyl he pseudoplastic; He pumau tana otinga ka rongoa i te pāmahana rūma, kaore e whakaatu i tetahi whakamarumaru o te tirohanga noa engari mo te tupono o te whakaraeraetanga.
 
3, hydroxypropyl methyl cellulose waikawa me te ātete o te alkaline
Hydroxypropyl methylcelllulose waikawa waikawa konupi, te waikawa o te waikawa, te waikawa procsic, me te waikawa phosphoric, me te waikawa phosphoric, me te waikawa phosphoric, me te waikawa phosphoric, me te waikawa phosphoric, me te waikawa phosphoric. Tuhinga o mua. Ko te alkali penei i te houra ngeru, ko te pāhare pāporo me te wai karaka kaore he painga ki runga, engari ko te hua o te paku o te otinga ka heke haere te heke o te otinga.
 
4, ka taea te whakaranu te ranunga wai hydroxypropyl
Ko te otinga cellloxypropyl methyl methyl ka taea te whakaranu ki nga pūora o te polymer wai-whakarewa, a ka waiho hei otinga tuuturu me te nui o te tirohanga. Ko enei kohinga konukawata nui ko te polyethylene Glycol, polyvinyl acetate, polymethyl vinyl silulose me te cell silloose, me te maaka. Ka taea hoki te whakaranu i te konutai waikawa hydroxypropyl.
 
5, hydroxypropyl methyl cellulose ka rewa te wai
Ko te papaa-wai-wai-a-wai hydroxypropyl methyl sellulsise. Me hanga te hydroxypropyl methylcellulose inoluper Aldehyde, Glyoxal, Sulyexal, me te whakamahi i te reanga glyoxal, na roto i te umanga a Glyoxal. Ko te inenga o tenei momo kaihoko o te ahorangi ko te 0.2% ~ 10% o te 7% ~ 10%, penei i te whakamahinga o te glyoxal me te 3.3% te mea e tika ana. Ko te pāmahana maimoatanga whānui ko te 0 ~ 30 ℃, ko te wa 1 ~ 120min. Me whakahaere te tauhohenga whakawhiti-hono i raro i nga tikanga waikawa. Ko te tikanga, ko te waikawa kaha o te waro, te waikawa waro waro ranei ka taapirihia ki te whakatika i te pH o te otinga ki te 2 ~ 6, ka tapiritia a Aldehydes mo te tauhohenga whakawhiti. Ko nga waikawa e whakamahia ana ko te waikawa hydrochloric, te waikawa sulfuric, waikawa phosphoric, waikawa hakihaki ranei, ko te waikawa succinic ranei te waikawa konupora. Ko te waikawa me te aldehydes ano ka taapirihia i te wa ano kia taea ai te whakatau i te otinga i roto i te waahanga pH e hiahiatia ana. Ko tenei tauhohenga e whakamahia ana i roto i te waa whakamutunga o te mahi whakarite cellulose, na reira kaore e taea e te Cellulose Eter te whakamahi i te 20 ~ 25 ℃ te wai hei horoi me te horoi. Ka whakamahia te hua, ka taea te taapiri i nga matū konutai ki te otinga o te hua hei whakatika i te pH o te otinga kia tere ai te oriwa, a ka tere te rere o te hua ki te otinga. Ka taea hoki te whakamahi i tenei tikanga i te wa e whakamahia ana te otinga o te cellulose hei hanga kiriata me te rongoa i te kiriata ki te kiriata kore.
 
6, hydroxypropyl methyl cellulose anti-enzyme
He iti ake te whakakotahitanga o nga roopu whakatipuranga, ko te whakakore i nga roopu whakakapinga, engari ko te whakamaaramatanga o nga roopu whakakapinga. Ehara i te riterite, ka taea e nga microorganism te tata ki nga roopu o te kiri ngoikore ngoikore ki te hanga i nga huka, ka taea te tango i nga microorganism hei kai. Na, ki te mea ka piki ake te tohu whakakapinga o te cellulose, te ātete o te etern o te eterzosic ka whakareihia. E korerotia ana, i raro i nga tikanga whakahaere, ko te rahinga toenga o te hydroxypropy cellulose (DS = 1.9%), me te methyl cellulose (1.3%), me te 1.8%, me te 1.7%. Hydroxypropyl methyl cellulose he kaha te kaha anti-whyzyme. No reira te hydroxypropyl methylcellulose pai rawa atu, he mea hangarua me te hanganga pai, he mea nui ki te taapiri i nga koti emulsion, etc. Heoi, hei aukati i te rokiroki mo te wa roa, i te paitini ranei i waho, ka taea te taapiri i te tiakitanga, ka taea te whakatau kia rite ki nga whakaritenga whakamutunga o te otinga. Ko te FomeTate Acetate me te Manganese a Manganese e whai mana ana, engari he paitini to raatau, me ata mahi tupato. Ko te tikanga, 1 ~ 5mg 5mg Phenylmercuric Acetate ka taea te taapiri ki ia rita o te otinga.
 
7, hydroxypropyl methyl cellulose membrane mahi
Ko te mahinga kiriata Hydroxypropyl methyl sellulose, ko te otinga wai, i te raima whakarewa ranei, i muri i te maroke, he maamaa, he kiriata ngawari. He pai te ātete o te makuku ka mau tonu ki te pāmahana tiketike. Pēnei i te taapiri o te kirihou hygrosocopic, ka taea te whakarei ake i te whakatikatika me te ngawari, ki te whakapai ake i te ngawari, te glycerol me te sorizer me etahi atu kirihou. Ko te kukume kotahitanga ko te 2% ~ 3%, ko te kohinga kirihou he 10% ~ 20% o te cellulose eter. Mena he pai te kiko o te kirihou, ko te ahuatanga o te haruru o Colloid Dehyderation e puta ana i te tino nui. Ko te kaha o te kiriata taapiri he nui ake i te kore e tapiritia, ka piki haere te pikinga o te kiriata, na te nui o te kirihou o te kirihou.