Ithini indawo yokunyibilika kwe-HPMC Polymer?

I-HPMC (Hydroxypropyl methylcelcelcelsulose) Ngaba i-polymer ye-polymer ye-polymer esetyenziswa ngokubanzi isetyenziswa kwiindawo zamachiza, ukutya, ukwakhiwa, i-cosmetics kunye namanye amashishini. I-HPMC yi-Semi-synthetic yeselula efunyenwe ngokuguqulwa kwemichiza yeselutase yendalo, kwaye ihlala isetyenziswa njenge-thi churner, i-stabilizer, i-emulsifier kwaye inamathele.

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Iipropathi zomzimba ze-HPMC

Indawo yokunyibilika ye-HPMC inzima kakhulu kuba inqaku layo lokunyibilika alibonakali njengezixhobo zekristali eziqhelekileyo. Inqaku layo elinyibilikayo lichaphazeleka sisimo se molekyuli, ubunzima bemoyarcular kunye nenqanaba lokufakwa endaweni ye-HydroxyPlPlapy kunye namaqela e-methyl, ukuze ingahluka ngokwemveliso ethile ye-HPMC. Ngokubanzi, njenge-polymer enyibilikayo yamanzi, i-HPMC ayinayo indawo ecacileyo nengafaniyo, kodwa ithambisa kwaye ibola kuluhlu oluthile lobushushu.

 

Uluhlu lwendawo yokunyibilika

Ukuziphatha kwe-thermal ye-suntrincel®hpmc kunzima kakhulu, kwaye indlela yokuziphatha ye-thermal yayo idla ngokufundwa yi-thermographimpric uhlalutyo (i-TGA). Ukusuka kuncwadi, inokufunyanwa ukuba uluhlu lwe-Iltal Uluhlu lwe-HPMC luphakathi phakathi kwe-200°C kunye ne-300°C, kodwa olu luhlu alubonakalisi indawo yokwenyani yazo zonke iimveliso ze-HPMC. Iindidi ezahlukeneyo zeemveliso ze-HPMC zinokuba namanqaku ahlukeneyo kunye nokuzinza kwe-thermal ngenxa yemolekyuli, isidanga se-ethoterition (isidanga sokufaka), isidanga se-hydroxypy (isidanga sokufaka endaweni).

 

I-HPMC ye-Molecular ye-Molecular ye-MPMC: ihlala inyibilika okanye ithambe kumaqondo obushushu asezantsi, kwaye inokuqalisa ukunyibilika okanye inyibilike nge-200°C.

 

I-HEPMC SPRMCRY HPMC: I-HPMC Polymers eneqondo lokuhlala eliphakamileyo le-molecular linokufuna amaqondo obushushu aphezulu anyibilike okanye athambekele ngenxa yeemolekyuli zawo ezinde, kwaye aqala ukuqalisa kwi-250°C kunye ne-300°C.

 

Izinto ezichaphazela indawo yokunyibilika kwe-HPMC

Ubunzima bemolekyuli: Ubunzima bemolekyuli ye-HPMC inefuthe elikhulu kwindawo yayo yokunyibilika. Ubunzima obuphantsi bemolekyuli buhlala buthetha ubushushu obuphantsi, ngelixa ubunzima obuphezulu bunokukhokelela kwindawo ephezulu yokunyibilika.

 

Isidanga sokufakwa endaweni: inqanaba le-hydroxyypropypy (okt isilinganiselo sokuqala se-HydroxyPlPLLL kwimolekyuli) kunye nenqanaba le-methyl (okt umyinge we-methyl kwimolekyuli) ye-HPMC ikwachaphazela indawo yayo yokunyibilika. Ngokubanzi, inqanaba eliphezulu lokufaka endaweni yonyusa ukubethwa kwe-HPMC kwaye kunciphisa indawo yayo yokunyibilika.

 

Umxholo wokufuma: Njengesixhobo esinyibilikayo samanzi, indawo yokunyibilika ye-HPMC ikwachaphazeleka ngumthombo wayo wokufuma. I-HPMC ngomxholo ophezulu wonyaka wokufuma awunakwenzakaliswa phantsi komngxunya okanye ukutshintshwa komzimba, okukhokelela kutshintsho kwiqondo lokushisa.

Uzinzo lwe-thermal kunye neqondo lokushisa le-HPMC

Nangona i-HPMC ayinayo indawo yokunyibilika, uzinzo lwayo luphambili oluphambili. Ngokutsho kohlalutyo lwe-thermographimpric (i-TGA) yedatha, i-HPMC ihlala iqala ukubola kuluhlu lobushushu lwe-250°C ukuya kuma-300°C. Amaqondo obushushu athile okubekelekileyo axhomekeke kubunzima bemolekyuli, isidanga sokufaka kunye nezinye iipropathi zomzimba kunye neekhemikhali ze-HPMC.

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Unyango lwe-thermal kwizicelo ze-HPMC

Kwizicelo, indawo yokunyibilika kunye nokuzinza kwe-HPMC kubaluleke kakhulu. Umzekelo, kumzi-mveliso wamayeza, i-HPMC ihlala isetyenziswa njengesixhobo se-capsules, iifilimu zeefilimu, kunye nezithintelo zeziyobisi ezizinzileyo. Kwezi zicelo, uzinzo lwe-shirmal ye-HPMC kufuneka ifezekise iimfuno zobushushu, ke ngoko ukuqonda indlela yokuziphatha ye-shirmal kunye nendawo yokunyibilika ye-HPMC kubalulekile ukulawula inkqubo yemveliso.

 

Kwicandelo lokwakha, i-Nqulcel®HPMM idla ngokusetyenziswa njenge-thi choner kumdaka owomileyo, amatyalako kunye nemihlambi. Kwezi zicelo, uzinzo lwe-shirmal ye-HPMC kufuneka ibekho kuluhlu oluthile ukuqinisekisa ukuba ayisebenzi ngexesha lokwakha.

 

I-HPMC, njengezinto zepolymer, ayinayo indawo yokunyibilika enyibilikayo, kodwa ibonise iimpawu zokuthambisa kunye ne-pyrolysis kwicandelo elithile lobushushu. Uluhlu lwenqaku lokunyibilika liphakathi kwe-200°C kunye ne-300°C, kwaye inqaku elinyibilikayo lixhomekeke kwimiba efana nobunzima bemolekyuli, inqanaba le-hydroxyyprocyplopy, inqanaba le-methylity, kunye nomswakama we-HPMC. Kwimeko ezahlukeneyo zesicelo, ukuqonda ezi mpahla ze-shirmal kubalulekile ukulungiselela ukulungiselela nokusetyenziswa kwayo.


IXESHA LOKUQALA: UJan-04 ukuya ku-525