Hydroxypropyl methylcellulose (HPMC), nk'ikintu gisanzwe kiva muri cellulose, ikoreshwa cyane mu bwubatsi, mu by'imiti, mu biribwa, mu binyabutabire bya buri munsi no mu zindi nganda. Ubwiza bwa HPMC bugaragazwa ahanini n'imiterere y'umubiri n'imiti, imikorere n'ingaruka z'imikoreshereze.
1. Isura n'ibara
Ubusanzwe HPMC ni ifu cyangwa uduce tw’umweru cyangwa tudafite umweru. Iyo habayeho impinduka zikomeye mu ibara, nko kuba umuhondo, imvi, nibindi, bishobora gusobanura ko ubuziranenge bwayo butari bwinshi cyangwa ko yanduye. Byongeye kandi, ingano y’uduce duto igaragaza urwego rw’igenzura ry’uburyo ikorwa. Uduce twiza twa HPMC tugomba gukwirakwizwa ku buryo bungana nta guhuriza hamwe cyangwa imyanda bigaragara.
2. Ikizamini cy'uko ibintu bishonga
HPMC ifite ubushobozi bwo gushonga neza mu mazi, ibi bikaba ari ikimenyetso cy'ingenzi cyo gusuzuma ubwiza bwayo. Binyuze mu isuzuma ryoroshye ryo gushonga, ubushobozi bwo gushonga no gushonga kwayo bishobora gusuzumwa. Intambwe ni izi zikurikira:
Fata ifu nke ya HPMC, uyishyire buhoro buhoro mu mazi akonje cyangwa mu bushyuhe bw'icyumba, hanyuma urebe uko ishonga. HPMC nziza cyane igomba gukwirakwizwa neza mu gihe gito nta mvura igaragara igwa, hanyuma igahinduka umuti ubonerana cyangwa ufite amazi make.
Igipimo cyo gushonga kwa HPMC gifitanye isano n'imiterere ya molekile yayo, urwego rwo gusimbuza, n'ubuziranenge bw'imikorere yayo. HPMC idafite ubuziranenge ishobora gushonga buhoro buhoro kandi byoroshye ikarema uduce duto tworoshye kubora.
3. Gupima ubukana
Ubushyuhe ni kimwe mu bipimo by'ingenzi cyane ku bwiza bwa HPMC. Ubushyuhe bwayo mu mazi buterwa n'uburemere bwa molekile n'urwego rwo kuyisimbura, kandi akenshi ipimwa na viscometer izunguruka cyangwa viscometer ya capillary. Uburyo bwihariye ni ugushongesha ingano runaka ya HPMC mu mazi, gutegura umuti w'ingano runaka, hanyuma ugapima ubushyuhe bw'umuti. Dukurikije amakuru y'ubushyuhe, dushobora kwemeza ko:
Iyo agaciro ka viscosity kari hasi cyane, bishobora gusobanura ko uburemere bwa molekile ari buto cyangwa ko bwagabanutse mu gihe cyo gukora;
Iyo agaciro ka viscosity kari hejuru cyane, bishobora gusobanura ko uburemere bwa molekile ari bunini cyane cyangwa ko insimburangingo idahwanye.
4. Gusuzuma ubuziranenge
Ubuziranenge bwa HPMC buzagira ingaruka zitaziguye ku mikorere yayo. Ibicuruzwa bifite ubuziranenge buke akenshi biba birimo ibisigazwa byinshi cyangwa imyanda. Isuzuma ry'ibanze rishobora gukorwa hakoreshejwe uburyo bworoshye bukurikira:
Isuzuma ry'ibisigazwa ku gutwika: Shyira urugero ruto rwa HPMC mu itanura rishyuha cyane hanyuma uryoshye. Ingano y'ibisigazwa ishobora kugaragaza ingano y'umunyu utari umwimerere n'iyoni z'icyuma. Ibisigazwa bya HPMC byiza bigomba kuba bike cyane.
Ikizamini cy'agaciro ka pH: Fata ingano ikwiye ya HPMC uyishongeshe mu mazi, hanyuma ukoreshe urupapuro rw'ikizamini cya pH cyangwa icyuma gipima pH kugira ngo upime agaciro ka pH k'umuti. Mu bihe bisanzwe, umuti w'amazi wa HPMC ugomba kuba hafi ya neutral. Niba ari aside cyangwa alkaline, imyanda cyangwa ibindi bishobora kubaho.
5. Imiterere y'ubushyuhe n'ubudahungabana bw'ubushyuhe
Mu gushyushya icyitegererezo cya HPMC, ubushyuhe bwayo bushobora kugaragara. HPMC nziza cyane igomba kugira ubushyuhe bwinshi mu gihe cyo gushyushya kandi ntigomba kubora cyangwa ngo ipfa vuba. Intambwe zoroshye zo gupima ubushyuhe zirimo:
Shyushya urugero ruto rw'ibipimo ku isahani ishyushye hanyuma urebe aho bishongesha n'ubushyuhe bwabyo bwo kubora.
Iyo icyitegererezo gitangiye kubora cyangwa guhindura ibara ku bushyuhe buri hasi, bivuze ko ubushyuhe bwacyo budahagaze neza.
6. Kugena ingano y'ubushuhe
Ubushuhe bwinshi bwa HPMC buzagira ingaruka ku buryo iguma mu bubiko no ku mikorere yayo. Ubushuhe bwayo bushobora kugenwa hakoreshejwe uburyo bw'uburemere:
Shyira icyitegererezo cya HPMC mu itanura hanyuma ugishyire ku bushyuhe bwa 105°C kugeza ku buremere buhoraho, hanyuma ubare itandukaniro ry'uburemere mbere na nyuma yo kumisha kugira ngo ubone ubushuhe. HPMC nziza igomba kugira ubushuhe buke, ubusanzwe ikagenzurwa munsi ya 5%.
7. Ingano yo gushakisha uburyo bwo gusimbuza
Urugero rwo gusimbuza amatsinda ya methoxy na hydroxypropoxy ya HPMC rugira ingaruka zitaziguye ku mikorere yayo, nko gushonga, ubushyuhe bwa gel, ubushyuhe, nibindi. Urugero rwo gusimbuza rushobora kugaragazwa hakoreshejwe titration ya chemical cyangwa infrared spectroscopy, ariko ubu buryo buragoye cyane kandi bugomba gukorwa muri laboratwari. Muri make, HPMC ifite gusimbuza bike ifite gushonga guke kandi ishobora gukora gel zitangana mu mazi.
8. Isuzuma ry'ubushyuhe bwa gel
Ubushyuhe bwa jeli ya HPMC ni ubushyuhe ikora jeli mu gihe cyo gushyushya. HPMC y’ubushyuhe bwo hejuru ifite ubushyuhe bwihariye bwa jeli, akenshi buri hagati ya 60°C na 90°C. Uburyo bwo gupima ubushyuhe bwa jeli ni ubu:
Shyira HPMC mu mazi, wongere buhoro buhoro ubushyuhe, kandi urebe ubushyuhe aho umuti uhinduka ukava mu buryo bubonerana ujya mu buryo bushyushye, ari bwo bushyuhe bwa gel. Niba ubushyuhe bwa gel butandukaniye n'ubusanzwe, bishobora gusobanura ko imiterere ya molekile cyangwa urugero rwayo rwo gusimbuza rutujuje ubuziranenge.
9. Isuzumamikorere
Imikorere ya HPMC mu bikorwa bitandukanye ishobora kuba itandukanye. Urugero, mu nganda z'ubwubatsi, HPMC ikunze gukoreshwa nk'ikintu gifata amazi kandi gikonjesha. Imikorere yayo yo gufata amazi n'ingaruka zayo zo kuyakomeza bishobora kugeragezwa hakoreshejwe igerageza rya mortier cyangwa putty. Mu nganda zikora imiti n'ibiribwa, HPMC ikoreshwa nk'ibikoresho bya firime cyangwa capsule, kandi ingaruka zayo zo gukora firime n'imiterere ya colloidal bishobora kugeragezwa binyuze mu igerageza.
10. Impumuro mbi n'ibintu bihindagurika
HPMC nziza cyane ntigomba kugira impumuro igaragara. Niba icyitegererezo gifite impumuro mbi cyangwa uburyohe butari ubwo mu mahanga, bishobora gusobanura ko imiti idakenewe yashyizwe mu gihe cyo kuyikora cyangwa ko irimo ibintu bihindagurika cyane. Byongeye kandi, HPMC nziza ntigomba gutanga imyuka ikarishye ku bushyuhe bwinshi.
Ubwiza bwa HPMC bushobora gupimwa hakoreshejwe ibizamini byoroshye nk'uko bigaragara, gupima ubushyuhe n'ubukonje, cyangwa hakoreshejwe imiti nko gupima ubuziranenge n'ibizamini by'ubushyuhe. Binyuze muri ubu buryo, hashobora gufatwa umwanzuro w'ibanze ku bwiza bwa HPMC, bityo hagakorwa neza mu mikoreshereze yayo.
Igihe cyo kohereza ubutumwa: 25 Nzeri 2024