ʻO ka cellulose ether kahi papa o nā polymers hiki ke hoʻoheheʻe ʻia i ka wai i loaʻa mai ka cellulose, ʻo ia ka mea hana nui o nā paia o nā mea kanu. He nui nā waiwai kūʻokoʻa o ka cellulose ether, me ka mālama ʻana i ka wai kiʻekiʻe, ka mānoanoa, ka paʻa ʻana, a me ka hiki ke hana kiʻiʻoniʻoni. Hoʻolilo kēia mau waiwai i ka cellulose ether i mea waiwai nui i nā huahana ʻoihana, lāʻau lapaʻau, a me nā huahana mālama pilikino.

ʻO kekahi o nā waiwai koʻikoʻi o ka cellulose ether kona viscosity, e pili ana i ke kūʻē ʻana o kahi wai e kahe. He mea koʻikoʻi ka Viscosity e pili ana i ka hana a me ka hoʻohana ʻana o cellulose ether i nā huahana like ʻole. Ma kēia ʻatikala, e kūkākūkā mākou i ka viscosity o cellulose ether, me kāna ana ʻana, nā mea e pili ana iā ia, a me kāna hoʻohana ʻana i nā ʻoihana like ʻole.

Ana o Viscosity o Cellulose Etera

Hoʻohana maʻamau ʻia ka viscosity o cellulose ether me ka viscometer, ʻo ia kahi mea hana e ana i ka kahe kahe o kahi wai ma lalo o ka mana o ka umekaumaha a i ʻole ka ikaika i hoʻohana ʻia. Nui nā ʻano viscometers, me ka rotational, capillary, a me oscillatory viscometers, kēlā me kēia me kona pono ponoʻī a me nā palena.

ʻO nā viscometers rotational ka mea hana maʻamau no ke ana ʻana i ka viscosity o cellulose ether. ʻO kēia mau mea hana e ana i ka torque i koi ʻia e hoʻohuli i kahi spindle a i ʻole rotor i hoʻokomo ʻia i loko o ka wai me ka wikiwiki mau. A laila e helu ʻia ka viscosity ma muli o ka pilina ma waena o ka torque a me ka wikiwiki o ka hoʻololi ʻana.

ʻO nā viscometer capillary, ma ka ʻaoʻao ʻē aʻe, e ana i ka manawa i koi ʻia no ka kahe paʻa o ka wai e kahe ai i loko o kahi paipu capillary haiki ma lalo o ka mana o ka umekaumaha a i ʻole ke kaomi kaomi. A laila, helu ʻia ka viscosity ma muli o ke kānāwai Poiseuille, e pili ana i ka holo kahe me ka viscosity, ke anawaena o ka paipu, a me ka gradient kaomi.

Hoʻohana ʻia nā viscometers oscillatory, e ana i ka deformation a me ka hoʻihoʻi hou ʻana o kahi wai ma lalo o ke koʻikoʻi o ka sinusoidal shear stress, e ana i ka viscosity paʻakikī o cellulose ether, ʻo ia ka viscosity pili pinepine.

Nā mea e pili ana i ka Viscosity o Cellulose Ether

Hoʻopili ʻia ka viscosity o ka cellulose ether e kekahi mau mea, e like me kona kaumaha molekala, degere o ka hoʻololi ʻana, ka ʻike, ka mahana, a me ka nui o ka shear.

ʻO ke kaumaha molekala: Piʻi ka viscosity o cellulose ether me ka hoʻonui ʻana i ke kaumaha molekala, ʻoiai ʻoi aku ka nui o nā polymers kaumaha molecular i nā kaulahao lōʻihi e pili ana kekahi i kekahi, e alakaʻi ana i ka piʻi ʻana o ke kūʻē i ke kahe.

Degere o ka hoʻololi: ʻO ke degere o ka hoʻololi ʻana (DS) o cellulose ether, e pili ana i ka helu o nā pūʻulu hydroxyl i hoʻololi ʻia i kēlā me kēia ʻāpana glucose i ke kaulahao cellulose, pili pū i kona viscosity. Ke piʻi aʻe ka DS, piʻi ka viscosity o cellulose ether ma muli o ka hoʻonui ʻia ʻana o ke kaulahao a me nā pilina intermolecular.

Kūleʻa: Piʻi ka viscosity o cellulose ether me ka hoʻonui ʻana i ka ʻike, ʻoiai ke alakaʻi nei nā kiʻekiʻe kiʻekiʻe i ka hoʻonui ʻana i ke kaulahao a me nā pilina intermolecular.

Mahana: Ke emi nei ka viscosity o cellulose ether me ka piʻi ʻana o ka mahana, no ka mea, ke alakaʻi nei nā mahana kiʻekiʻe i ka hoʻonui ʻana i ka neʻe molecular a me ka hoʻemi ʻana i nā pilina intermolecular.

Laki ʻāhi: ʻO ka viscosity o cellulose ether ke hilinaʻi pū ʻia i ka nui o ka shear rate i hoʻohana ʻia, no ka mea, ʻoi aku ke kiʻekiʻe o ka ʻoki ʻoki ʻana i ka hoʻonui ʻana i ke kaulahao a hoʻemi ʻia ke kūʻē ʻana i ke kahe.

Hoʻohana i ka Cellulose Ether ma nā ʻoihana like ʻole

Hoʻohana nui ʻia ka cellulose ether i nā ʻoihana like ʻole ma muli o kāna mau waiwai kūikawā, me kona viscosity. ʻO kekahi o nā noi nui o ka cellulose ether i nā ʻoihana like ʻole e kūkākūkā ʻia ma lalo nei.

Hana ʻia: Hoʻohana ʻia ʻo Cellulose ether ma ke ʻano he mānoanoa, ka mea mālama wai, a me ka mea hoʻopaʻa i nā huahana kūkulu e like me ka sima, mortar, a me ka gypsum. Hoʻonui ia i ka hana, kūlike, a me ka pili ʻana o kēia mau huahana, e alakaʻi ana i ka hoʻomaikaʻi ʻana i ka hana a me ka lōʻihi.

ʻO nā lāʻau lapaʻau: Hoʻohana ʻia ka cellulose ether ma ke ʻano he excipient i nā ʻano lāʻau lapaʻau e like me nā papa, nā capsules, a me nā ʻaila. Hoʻonui ia i ka flowability, compressibility, a me ka viscosity o nā formulations, e alakaʻi ana i ka hoʻopuka lāʻau a me ka paʻa.