Low-substituted hydroxypropyl cellulose (L-HPC) ndi chochokera ku cellulose, polima wachilengedwe wopezeka m'makoma a cellulose. L-HPC yasinthidwa kuti iwonjezere kusungunuka kwake ndi zinthu zina, ndikupangitsa kuti ikhale yosunthika yokhala ndi ntchito zambiri m'makampani opanga mankhwala, chakudya, ndi zodzoladzola.
Low-substituted hydroxypropylcellulose (L-HPC) ndi yotsika m'malo mwa cellulose yomwe yasinthidwa makamaka kuti ikhale yosungunuka m'madzi ndi zosungunulira zina. Cellulose ndi liniya polysaccharide yopangidwa ndi mayunitsi a shuga omwe ali ochuluka mwachilengedwe ndipo ndi gawo la makoma a cell cell. L-HPC imapangidwa ndi kusintha kwa cellulose, ndikuyambitsa magulu a hydroxypropyl kuti azitha kusungunuka ndikusunga zina mwazinthu zofunika za cellulose.
Kapangidwe ka mankhwala a low-substituted hydroxypropyl cellulose
Kapangidwe kakemidwe ka L-HPC kamakhala ndi msana wa cellulose ndi gulu la hydroxypropyl lomwe limalumikizidwa ndi gulu la hydroxyl (OH) la gawo la glucose. Digiri ya m'malo (DS) imatanthawuza kuchuluka kwa magulu a hydroxypropyl pagawo la shuga mu tcheni cha cellulose. Mu L-HPC, DS imasungidwa mwadala kuti ikhale yotsika kuti isungunuke bwino ndikusunga mawonekedwe a cellulose.
Kaphatikizidwe ka cellulose ya hydroxypropyl yotsika
Kaphatikizidwe ka L-HPC kumakhudza momwe cellulose imayendera ndi propylene oxide pamaso pa chothandizira chamchere. Izi zimapangitsa kuti magulu a hydroxypropyl alowe mu unyolo wa cellulose. Kuwongolera mosamalitsa momwe zinthu zimachitikira, kuphatikiza kutentha, nthawi yochitira, komanso ndende yothandizira, ndikofunikira kuti mukwaniritse zomwe mukufuna m'malo.
Zomwe zimakhudza kusungunuka
1. Digiri ya kusintha (DS):
Kusungunuka kwa L-HPC kumakhudzidwa ndi DS yake. Pamene DS ikuwonjezeka, hydrophilicity ya gulu la hydroxypropyl imawonekera kwambiri, potero kumapangitsa kusungunuka m'madzi ndi zosungunulira za polar.
2. Kulemera kwa mamolekyu:
Kulemera kwa maselo a L-HPC ndi chinthu china chofunikira. Kulemera kwa molekyulu ya L-HPC kumatha kuwonetsa kusungunuka kwapang'onopang'ono chifukwa cha kuchuluka kwa ma intermolecular interlecular and entanglements chain.
3. Kutentha:
Kusungunuka nthawi zambiri kumawonjezeka ndi kutentha chifukwa kutentha kwakukulu kumapereka mphamvu zowonjezera mphamvu za intermolecular ndikulimbikitsa kuyanjana kwa polima ndi zosungunulira.
4. pH mtengo wa yankho:
PH ya yankho imakhudza ionization ya magulu a hydroxypropyl. Nthawi zina, kusintha pH kumatha kuwonjezera kusungunuka kwa L-HPC.
5. Mtundu wosungunulira:
L-HPC imawonetsa kusungunuka kwabwino m'madzi ndi zosungunulira zosiyanasiyana za polar. Kusankhidwa kwa zosungunulira kumadalira ntchito yeniyeni ndi katundu wofunidwa wa mankhwala omaliza.
Kugwiritsa ntchito cellulose yotsika m'malo mwa hydroxypropyl
1. Mankhwala osokoneza bongo:
L-HPC imagwiritsidwa ntchito kwambiri m'makampani opanga mankhwala monga binder, disintegrant and controlled release agent mumipangidwe yamapiritsi. Kusungunuka kwake m'madzi am'mimba kumapangitsa kuti ikhale yoyenera yoperekera mankhwala.
2. Makampani azakudya:
M'makampani azakudya, L-HPC imagwiritsidwa ntchito ngati thickener ndi stabilizer muzinthu zosiyanasiyana. Kukhoza kwake kupanga gel omveka bwino popanda kukhudza kukoma kapena mtundu wa zakudya kumapangitsa kuti zikhale zofunikira pakupanga zakudya.
3. Zodzoladzola:
L-HPC imagwiritsidwa ntchito popanga zodzoladzola pakupanga mafilimu komanso kukhuthala. Zimathandizira kukhazikika komanso mawonekedwe a zodzoladzola monga zodzoladzola, mafuta odzola ndi ma gels.
4. Ntchito zokutira:
L-HPC ikhoza kugwiritsidwa ntchito ngati filimu yokutira filimu m'mafakitale opanga mankhwala ndi zakudya kuti apereke chitetezo chamapiritsi kapena zinthu za confectionery.
Low-substituted hydroxypropyl cellulose ndi polymer yochita ntchito zambiri yokhala ndi kusungunuka kwamphamvu kochokera ku cellulose yachilengedwe yomwe imapezeka muzomera. Zake zapadera zimapangitsa kuti zikhale zofunikira m'mafakitale osiyanasiyana kuphatikizapo mankhwala, zakudya ndi zodzoladzola. Kumvetsetsa zinthu zomwe zimakhudza kusungunuka kwake ndikofunikira kuti mukwaniritse ntchito zake zosiyanasiyana. Pamene kafukufuku wa sayansi ya polima akupitilirabe, L-HPC ndi zotumphukira za cellulose zofananira zitha kupeza ntchito zatsopano komanso zatsopano m'magawo osiyanasiyana.
Nthawi yotumiza: Dec-26-2023