Ubwino wa cellulose ndi chiyani?

Ma cellulose ndi mtundu wa cellulose womwe kupanga kwake ndikugwiritsa ntchito kwake kumachulukirachulukira. Ndi cellulose wosakanizidwa wa ether wopangidwa kuchokera ku thonje woyengedwa pambuyo powonongeka, pogwiritsa ntchito propylene oxide ndi methyl chloride ngati etherification agents, komanso kudzera muzotsatira zingapo. Mlingo wolowa m'malo nthawi zambiri ndi 1.2 ~ 2.0. Makhalidwe ake ndi osiyana chifukwa cha magawo osiyanasiyana a zigawo za tert-butyl ndi zigawo za hydroxypropyl.

(1) Ma cellulose amasungunuka m'madzi ozizira, ndipo zimakhala zovuta kusungunuka m'madzi otentha. Koma kutentha kwake kwa gelatinization m'madzi otentha ndikokwera kwambiri kuposa carboxycellulose. Kusungunuka m'madzi ozizira kumakhalanso bwino kwambiri poyerekeza ndi carboxycellulose.

(2) Kukhuthala kwa cellulose kumayenderana ndi kukula kwa molekyulu yachibale, ndipo kukula kwa ma molekyulu amtundu wa cellulose ndikokwera kwambiri. Kutentha kudzakhudzanso mamasukidwe ake, kutentha kumatuluka, kukhuthala kumachepa. Koma mamasukidwe ake apamwamba komanso kutentha kwambiri sizowopsa kuposa carboxycellulose. Njira yake yamadzimadzi imakhala yokhazikika ikasungidwa kutentha.

(3) Kusungidwa kwa madzi ndi kusungunuka kwa cellulose kumakhala mu kuchuluka kwake, kukhuthala, etc., ndipo kuchuluka kwa madzi osungiramo madzi pansi pa kuwonjezereka komweku kumakhala kwakukulu kuposa carboxycellulose.

(4) Ma cellulose amalimbana ndi asidi ndi alkali, ndipo yankho lake ndi lokhazikika pa pH = 2 ~ 12. Anhydrous aluminiyamu kolorayidi ndi laimu slurry alibe mphamvu yaikulu pa katundu wake, koma alkali akhoza imathandizira kusungunuka kwake ndi kusintha mamasukidwe akayendedwe ake. Cellulose ndi yodalirika ku mchere wamba wa asidi, koma pamene mchere wa mchere uli wambiri, kukhuthala kwa cellulose solution kumawonjezeka.

(5) Ma cellulose amatha kugwiritsidwa ntchito ndi ma polima osungunuka m'madzi kuti apange yunifolomu komanso njira yamadzi yothamanga kwambiri. Monga acrylic emulsion, tapioca wowuma ether, masamba guluu, etc.

(6) Ma cellulose ali ndi mphamvu yolimbana ndi ma enzyme kuposa carboxycellulose, ndipo yankho lamadzimadzi silingathe kusungunuka ndi michere kuposa carboxycellulose.

(7) Kumata kwa cellulose kumapangidwe amatope a simenti ndikokwera kuposa carboxycellulose.