Kukhuthala kwa HPMC kumagwirizana ndi kutentha, ndiko kuti, kukhuthala kumawonjezeka pamene kutentha kumachepa.

HPMC kapena hydroxypropyl methylcellulose ndi chinthu chogwiritsidwa ntchito m'mafakitale osiyanasiyana kuphatikizapo mankhwala, zodzoladzola ndi chakudya. Chimagwiritsidwa ntchito kwambiri ngati chokhuthala komanso chosakaniza, ndipo kukhuthala kwake kumasintha kutengera kutentha komwe kukuchitika. M'nkhaniyi, tikambirana za ubale womwe ulipo pakati pa kukhuthala ndi kutentha kwa HPMC.

Kukhuthala kumatanthauzidwa ngati muyeso wa kukana kwa madzi kuyenda. HPMC ndi chinthu cholimba pang'ono chomwe muyeso wake wa kukana umadalira zinthu zosiyanasiyana, kuphatikizapo kutentha. Kuti timvetse ubale womwe ulipo pakati pa kukhuthala ndi kutentha kwa HPMC, choyamba tiyenera kudziwa momwe chinthucho chimapangidwira komanso chomwe chimapangidwa ndi chiyani.

HPMC imachokera ku cellulose, polima wachilengedwe m'zomera. Kuti apange HPMC, cellulose iyenera kusinthidwa ndi mankhwala ndi propylene oxide ndi methyl chloride. Kusintha kumeneku kumapangitsa kuti pakhale magulu a hydroxypropyl ndi methyl ether mu unyolo wa cellulose. Zotsatira zake ndi chinthu cholimba chomwe chingasungunuke m'madzi ndi zinthu zachilengedwe ndipo chimagwiritsidwa ntchito m'njira zosiyanasiyana, kuphatikizapo ngati chophimba cha mapiritsi komanso ngati chowonjezera cha zakudya, pakati pa zina.

Kukhuthala kwa HPMC kumadalira kuchuluka kwa chinthucho ndi kutentha komwe chimaonekera. Kawirikawiri, kukhuthala kwa HPMC kumachepa pamene kuchuluka kwake kukuwonjezeka. Izi zikutanthauza kuti kuchuluka kwa HPMC kumapangitsa kuti kukhuthala kuchepe komanso mosiyana.

Komabe, ubale wosiyana pakati pa kukhuthala ndi kutentha ndi wovuta kwambiri. Monga tanenera kale, kukhuthala kwa HPMC kumawonjezeka ndi kutentha komwe kumachepa. Izi zikutanthauza kuti HPMC ikakhudzidwa ndi kutentha kochepa, mphamvu yake yoyenda imachepa ndipo imakhala yokhuthala kwambiri. Mofananamo, HPMC ikakhudzidwa ndi kutentha kwakukulu, mphamvu yake yoyenda imawonjezeka ndipo kukhuthala kwake kumachepa.

Pali zinthu zosiyanasiyana zomwe zimakhudza ubale pakati pa kutentha ndi kukhuthala kwa HPMC. Mwachitsanzo, zinthu zina zomwe zimapezeka mumadzi zimatha kukhudza kukhuthala kwa HPMC, monga momwe pH yamadzi imakhudzira. Komabe, nthawi zambiri, pali ubale wosiyana pakati pa kukhuthala kwa HPMC ndi kutentha chifukwa cha momwe kutentha kumakhudzira mgwirizano wa hydrogen ndi kuyanjana kwa mamolekyu a unyolo wa cellulose mu HPMC.

Pamene HPMC ikukhudzidwa ndi kutentha kochepa, unyolo wa cellulose umakhala wolimba kwambiri, zomwe zimapangitsa kuti hydrogen bond iwonjezereke. Ma hydrogen bond awa amachititsa kuti hydrogen isamayende bwino, motero imawonjezera kukhuthala kwake. Mosiyana ndi zimenezi, pamene HPMCs ikukhudzidwa ndi kutentha kwakukulu, unyolo wa cellulose umakhala wosinthasintha, zomwe zimapangitsa kuti hydrogen bond ikhale yochepa. Izi zimachepetsa kukana kwa hydrogen bond, zomwe zimapangitsa kuti hydrogen bond ichepe.

Ndikofunikira kudziwa kuti ngakhale nthawi zambiri pamakhala ubale wosiyana pakati pa kukhuthala ndi kutentha kwa HPMC, izi sizimachitika nthawi zonse pa mitundu yonse ya HPMC. Ubale weniweni pakati pa kukhuthala ndi kutentha ungasiyane kutengera njira yopangira ndi mtundu weniweni wa HPMC womwe wagwiritsidwa ntchito.

HPMC ndi chinthu chogwiritsidwa ntchito m'mafakitale osiyanasiyana chifukwa cha kukhuthala kwake komanso mphamvu zake zopanga emulsifying. Kukhuthala kwa HPMC kumadalira zinthu zingapo, kuphatikizapo kuchuluka kwa chinthucho ndi kutentha komwe chimaonekera. Kawirikawiri, kukhuthala kwa HPMC kumagwirizana ndi kutentha, zomwe zikutanthauza kuti kutentha kukachepa, kukhuthala kumawonjezeka. Izi zimachitika chifukwa cha kutentha komwe kumakhudza mgwirizano wa hydrogen ndi kuyanjana kwa mamolekyu a cellulose chains mkati mwa HPMC.