Ngaba i-HPMC Synthitic okanye yendalo?

I-HydroxyPOpyl Methylcelcelsele (i-HPMC) yindawo eguquguqukayo esetyenziswe kumashishini ahlukeneyo, ukusuka kumayeza ukuya ekwakheni. Iipropathi zayo kunye nezicelo ziye zanikela ingqalelo ebonakalayo, ekhokelela kwimibuzo malunga nemvelaphi kunye nokuqulunqwa, nokuba yinto yokwenziwa okanye yendalo.

1. Ukuqonda i-hydroxypropyl methylcelcelcelsele (hpmc)

I-HPMC yindawo eguqulwe kakuhle ye-cutlose, i-polysacchacchacchacchaacchaacchaacchaaccharide efumaneka kwiindonga zeseli. Ithathwe ngokusebenzisa i-ethersulose ye-sellulose nge-propylene oxide kunye ne-methyl chloride, ikhokelela kwicandelo lezinto ezizodwa ezihlukile kumlinganiso wayo.

I-2. Inkqubo yoSynthesi

I-Synthesis ye-HPMC ibandakanya amanyathelo aliqela. Ekuqaleni, i-seluplose ikhutshwe kwimithombo yezityalo efana ne-pulp yenkuni okanye i-cotton. Esi seluplose sijongane nonyango kunye ne-alkali ukuze ifomu ye-alkali sellulose. Emva koko, i-proplone oxide kunye ne-methyl cutride ingeniswa kwi-Alkali Selese phantsi kweemeko ezilawulwayo, ezikhokelela ekufakweni kwamaqela e-hydroxyl kunye namaqela e-hydroxyl kunye namaqela e-hydyl. Inqanaba lokufakwa endaweni (DS) libonisa iipropathi ze-HPMC, kubandakanya i-viscofity yayo, ukuluka, kunye nokuziphatha kwe-thermal.

I-3. Ulwakhiwo lweMolekyuli

Isakhiwo se-phudm se-HPMC siquka i-chain ye-Glucose, i-Akin ukuya kwi-seluplose, kunye ne-hydroxylypropy kunye namaqela e-methyl aqhotyoshelwe kwezinye zezikhundla ze-hydroxyl (--). Ezi zinto zifakelweyo zinikezela i-hydrophobizetion kunye ne-steyic yokuthintela, ukutshintsha iimpawu zomzimba kunye neekhemikhali zePolymer. Isidanga kunye nokusasazwa kwezi zinto zifakiweyo zinefuthe kwipropathi yePolymer, ziyenza ngokwenkolo kwizicelo ezahlukeneyo.

4. Ukusetyenziswa kwe-HPMC

I-HPMC ifumana isixhobo esikhulu ngaphaya kwamashishini ahlukeneyo ngenxa yepropathi eyahlukileyo:

Amayeza: Kumachiza asechimeni, i-HPMC isebenza njengesithako esibalulekileyo kwiinkqubo zokuhambisa iziyobisi, kubandakanya iitafile, iicaphus, kunye neefom eziphambili. Isebenza njenge-binder, i-viscosity modifier, kunye nefilimu yangaphambili, iqinisekisa ukukhutshwa okulawulwayo kwamathafa okwenza amayeza asebenzayo (APIS) kunye nokuphucula ukuthotyelwa koguli.

Ulwakhiwo: I-HPMC isetyenziswa kwizixhobo zokwakha ezifana nokufakazi, iiplateres, kunye ne-tile. Isebenza njengearhente yokugcina amanzi, kunye ne-geoology modifier, ukuphucula ukusebenza, ukunamathela, kunye nokuqina kweemveliso zokugqibela.

Ishishini lokutya: I-HPMC yamkelwe ukuze isetyenziswe njengesongezelelo sokutya, ikakhulu, i-stabilizer, kunye ne-mulsifier ngokutya okwahlukeneyo, kubandakanya iisethi, iidessert, kunye neemveliso zobisi. I-Interter yayo kunye nokungabikho kwetyhefu kukhuseleke ekusebenziseni.

Iimveliso zononophelo lobuqu: i-HPMC ifakiwe kwi-cosmetics, i-SkereEre, kunye neKhogreyini yokuKhathalela kweeNdlela zokuFumaneka kweefilimu, ukuthambisa, kunye nokuzinzisa iipropathi. Iphucula ukwenziwa kwemveliso, imbonakalo, kunye nokusebenza ngaphandle kokubangela ukucaphuka kolusu.

I-5. I-synthetic vs i-vs

Ukwahlula-hlula kwe-HPMC njengoko i-switnthetic okanye indalo sisihloko sengxoxo. Kwelinye icala, i-HPMC isuselwa kwi-sellyulose, i-polymer yemvelo yenzeka ngokwemvelo ininzi kwizityalo. Nangona kunjalo, utshintsho lwekhemikhali olubandakanyekayo kwi-synthesion-ethe thether kunye ne-propylene oxide kunye ne-methyl chloride-mphutyana-up kwicandelo lezinto ezitshintshwayo ezingafumaneki kwiqabane layo lendalo alifumaneki kwiqabane lakhe lendalo alifumaneki kwiqabane lakhe lendalo. Ukongeza, inkqubo yokuphuhlisa i-HPMC ibandakanya ukuphendula okungamaphepha amaShuminali, enokuthi iphakamise inkxalabo malunga nokuhlelwa kwayo njengemveliso yendalo.

Abaxhasi bolusulelo lwe-Synthetic axoxa ukuba uhlengahlengiso lwekhemikhali olwenziwa kwi-selsulose iguqulile ibe yinxalenye eyahlukileyo ngempawu zokwenziwa. Bagxininisa ukubandakanyeka kwe-regeents ye-regeents kunye neenkqubo ekuvelisweni kwe-HPMC, ibalaselisa ukumka kwawo ngokwemvelo kwendalo.

Ngokuchaseneyo, abagwebi kwinkampu yokuhlelwa kwendalo ukuba i-HPMC igcina ubume besiseko se-sellyulose, ialbeit kunye nokulungiswa. Baxoxa kukuba ukuseka isellulose kwimithombo yezityalo ezihlaziyiweyo, i-HPMC inokuthathwa njengemvelaphi yemvelaphi yendalo. Ngapha koko, baqinisekisa ukuba utshintsho lwekhemikhali olubandakanyekayo kwiinkqubo zalo zokulinganisa zokulinganisa ezenzeka kwindalo, nangona zikwindawo yokusebenza elawulwayo.

I-6. Ukuqwalaselwa kolawulo

Ukusuka kwimbono yolawulo, ukwahlula-hlulwa kwe-HPMC kuyahluka ngokuxhomekeke kumxholo kunye nolawulo. Kweminye imimandla, njenge-European Union kunye ne-United States, i-HPMC ithathelwa ingqalelo njenge-polymer yendalo ethathwe kwi-sellulose. Kananjalo, kuxhomekeke kwimigaqo elawula izongezo zokutya, izihlobo zamayeza, kunye nezixhobo zokuhambisa.

Nangona kunjalo, imizimba ethile ethile inokubeka iimfuno ezithile okanye izithintelo ekusebenziseni i-HPMC ngokusekwe isicelo sayo kunye nemigangatho yokucoceka. Umzekelo, i-HPMOCOCATICATION-IBAKALA I-HPMC kufuneka ifezekise indlela engqongqo ngokubhekisele kucoceko, uVeksisity, kunye nokungabikho kokungcola ukuqinisekisa ukhuseleko lwayo kunye nokusebenza kakuhle kwenkqubo yokhuseleko lweziyobisi.

7. Ukuqukumbela

I-HydroxyPOpyl Methylcelcelsulose (i-HPMC) ifumana indima ebaluleke kakhulu kwimizi-mveliso eyahlukeneyo, ngenxa yezicelo zawo ezenzekelayo kunye nezicelo. Ngelixa i-synthesis yayo ibandakanya ukulungiswa kwekhemikhali ye-Selering yendalo, ingxoxo ejikeleze ukwahlulwa kwayo njengento yokwenziwa okanye yendalo. Abaxhasi bazo zombini ezi zinto zibonelela ngeempikiswano ezinyanzelayo, zibonisa intembeko enobunzima phakathi kwesiSynthesic, uhlengahlengiso lwesakhiwo, kunye nemvelaphi yendalo.

Nokuba ungahlelwa njani, i-HPMC iyaqhubeka ixabisa ukusebenza, ukhuseleko, kunye nokuzinza. Njengoko inkqubela phambili yoPhando kunye ne-Scamstory Suploolve, ukuqonda kwe-nuesnued Iipropathi ze-HPMC kunye nemvelaphi eya kuba kubalulekile ekuthathweni kwezigqibo kwishishini, izikolo, kunye neearhente zolawulo.