No ka hoʻoholo ʻana i ka maikaʻi o ka hydroxypropyl methyl cellulose

I kēia manawahydroxypropyl carboxymethyl celluloseʻOi aku ka nui o ke kūʻai aku ʻana o ka mākeke, ʻaʻole kaulike ke kumukūʻai, pehea e hoʻomaʻemaʻe koke ai i ka maikaʻi o ka hydroxypropyl methyl cellulose ua lilo i pilikia koʻikoʻi! No laila pehea e hoʻoholo ai i ka maikaʻi o ka hydroxypropyl methylcellulose? ʻO ka mea mua e nānā ai, ʻo ia ka keʻokeʻo o ka hydroxypropyl cellulose; ʻOiai ʻaʻole hiki ke maopopo ka keʻokeʻo inā kūpono ka HPMC no ka noi, akā i ke kaʻina hana ʻana aia kekahi mau mea hana maikaʻi ʻole e hoʻohui i kahi mea hoʻokeʻokeʻo, e hōʻino i kona maikaʻi. Akā ma ke ʻano laulā, ʻo ka hapa nui o ka cellulose ether maikaʻi loa he keʻokeʻo maikaʻi.

ʻO ka lua, e ʻike i ka fineness o ka hydroxypropyl methyl cellulose: ʻo ka nui o ka ʻāpana hydroxypropyl carboxymethyl cellulose he 80-100 mesh, 120 mesh ka liʻiliʻi, ʻo ka hydroxyethyl cellulose HECHPMC ma kahi o 100 mesh. ʻO ka HPMC no ka hapa nui o 60-80 mesh, ʻoi aku ka palupalu o ka methyl cellulose, ʻoi aku ka maikaʻi o ka hoʻopuehu ʻana.

Hoʻonā o ka cellulose ether mōakāka:HPMCe hoʻokomo i loko o ka wai e hana i kahi hopena colloid moakaka, ʻike ʻia ke kiʻekiʻe o ka hoʻonā, ʻo ke kiʻekiʻe o ka hoʻonā, ʻo ka haʻahaʻa o ka mea kemika ʻaʻole ia e hoʻoheheʻe.

Ke hoʻomehana ʻia ka waiwai, ua gelatinized a hōʻuluʻulu ʻia a laila hoʻoheheʻe hou ʻia. He hydrophobic a hoʻoheheʻe ʻia i ka wai. ʻO ka sima ke kumu nui o ka hoʻopili ʻana a me ka demulsification o ka pauka putty wai-pale. ʻO kona kumumanaʻo wai-pale penei: I ke kaʻina hana o ka hoʻohui ʻana i ka wai a me ka hoʻoulu ʻana i ka pauka latex redispersible a me ka sima, hoʻi mau ka pauka latex i ke ʻano emulsion mua, a ua hoʻopuehu like ʻia nā ʻāpana latex i loko o ka paʻi sima. Ma hope o ka hui ʻana o ka sima me ka wai, hoʻomaka ka hopena hydration, a hiki i ka hopena Ca (OH) 2 i ka saturation a hoʻoulu i nā kristal, a i ka manawa like, hana ʻia nā kristal ettringite a me nā colloids calcium silicate hydrate. Hoʻokomo ʻia nā ʻāpana latex ma luna o ka gel a me nā ʻāpana sima i hoʻomaʻemaʻe ʻole ʻia. Me ka holomua o ka hopena hydration, ke piʻi nei nā huahana hydration, a hōʻiliʻili mālie ʻia nā ʻāpana latex i loko o ka hakahaka o nā mea inorganic e like me ka sima, a hana i kahi papa hōʻiliʻili kokoke ma luna o ka gel sima. Ma muli o ka emi mālie ʻana o ka wai maloʻo, ʻo nā ʻāpana latex i hoʻopili paʻa ʻia i loko o nā gels a me nā voids e hoʻopili ʻia e hana i kahi kiʻiʻoniʻoni hoʻomau, e hana ana i kahi hui ʻana o ka paʻi sima e hoʻopili ana i ka matrix, a hoʻopaʻa i ka paʻi sima me nā aggregates pauka ʻē aʻe.