ʻO ka sodium carboxymethylcellulose(SCMC) he wai-soluble cellulose derivative i hoʻohana mau ʻia i nā ʻoihana like ʻole, e like me ka meaʻai, nā lāʻau lapaʻau, a me nā mea hoʻonaninani, ma ke ʻano he mānoanoa, stabilizer, a me ka emulsifier. ʻO ke kaʻina hana o SCMC e pili ana i kekahi mau ʻanuʻu, me ka alkalization, etherification, hoʻomaʻemaʻe, a me ka maloʻo.

1. Alkalization

ʻO ka hana mua i ke kaʻina hana o SCMC ʻo ka alkalization o cellulose. Loaʻa ʻia ka cellulose mai ka pulp lāʻau a i ʻole ka pulupulu pulupulu, i wāwahi ʻia i loko o nā ʻāpana liʻiliʻi ma o ke ʻano o ka hana mechanical a me kemika. A laila mālama ʻia ka cellulose me kahi alkali, e like me ka sodium hydroxide (NaOH) a i ʻole potassium hydroxide (KOH), e hoʻonui i kona reactivity a me ka solubility.

'O ke ka'ina hana alkalization 'o ia ka hui 'ana i ka cellulose me ka ho'onā 'ana o NaOH a i 'ole KOH ma nā wela a me nā pa'i ki'eki'e. ʻO ka hopena ma waena o ka cellulose a me ka alkali ka hopena i ka hoʻokumu ʻana o ka sodium a i ʻole ka potassium cellulose, kahi mea hoʻoikaika nui a hiki ke maʻalahi ke hoʻololi.

2. Etherification

ʻO ka hana aʻe i ka hana hana o SCMC ʻo ka etherification o ka sodium a i ʻole potassium cellulose. ʻO kēia kaʻina hana ka hoʻokomo ʻana i nā hui carboxymethyl (-CH2-COOH) ma luna o ka iwi kuamoʻo cellulose ma o ka hopena me ka waika chloroacetic (ClCH2COOH) a i ʻole kona paʻakai paʻakai a i ʻole ka paʻakai potassium.

Hana ʻia ka hopena etherification i loko o kahi hui wai-ethanol i nā wela kiʻekiʻe a me nā kaomi, me ka hoʻohui ʻana o kahi catalyst, e like me ka sodium hydroxide a i ʻole sodium methylate. ʻO ka hopena he exothermic nui loa a pono ka mālama pono ʻana i nā kūlana hopena e pale aku i ka wela a me ka hōʻino ʻana o ka huahana.

Hiki ke hoʻomalu ʻia ke degere o ka etherification, a i ʻole ka helu o nā pūʻulu carboxymethyl i kēlā me kēia mole mole cellulose, e ka hoʻoponopono ʻana i nā ʻano hopena, e like me ka neʻe ʻana o ka waikawa chloroacetic a me ka manawa pane. ʻO nā kiʻekiʻe kiʻekiʻe o ka etherification ka hopena i ke kiʻekiʻe o ka wai solubility a me ka viscosity mānoanoa o ka hopena SCMC.

3. Hoomaemae

Ma hope o ka hopena o ka etherification, hoʻohaumia ʻia ka hopena SCMC me nā haumia, e like me ka cellulose unreacted, alkali, a me ka chloroacetic acid. ʻO ka hana hoʻomaʻemaʻe e pili ana i ka wehe ʻana i kēia mau haumia no ka loaʻa ʻana o kahi huahana SCMC maʻemaʻe a kiʻekiʻe.

ʻO ke kaʻina hana hoʻomaʻemaʻe maʻamau e pili ana i nā ʻanuʻu holoi holoi a kānana me ka hoʻohana ʻana i ka wai a i ʻole ka wai wai o ka ethanol a i ʻole ka methanol. Hoʻopau ʻia ka SCMC me ka waika, e like me ka waikawa hydrochloric a i ʻole ka acetic acid, e wehe i ke koena alkali a hoʻoponopono i ka pH i ka pae i makemake ʻia.

4. Hoʻomaloʻo

ʻO ka hana hope loa i ka hana ʻana o SCMC ʻo ka maloʻo ʻana o ka huahana i hoʻomaʻemaʻe ʻia. ʻO ka SCMC maloʻo ka mea maʻamau i ke ʻano o ka pauka keʻokeʻo a i ʻole granule a hiki ke hana hou ʻia i nā ʻano like ʻole, e like me nā solutions, gels, a i ʻole nā ​​kiʻiʻoniʻoni.

Hiki ke hana ʻia ka hoʻomaloʻo ʻana me ka hoʻohana ʻana i nā ʻenehana like ʻole, e like me ka hoʻomaloʻo ʻana i ka pahu, ka hoʻomaloʻo pahu, a i ʻole ka maloʻo maloʻo, e pili ana i nā waiwai huahana i makemake ʻia a me ka pae hana. Pono e mālama pono ʻia ke kaʻina hoʻomaloʻo e pale i ka wela nui, hiki ke hopena i ka hōʻino ʻana a i ʻole discoloration.

Nā noi no ka Sodium Carboxymethylcellulose

Hoʻohana nui ʻia ʻo Sodium carboxymethylcellulose (SCMC) i nā ʻoihana like ʻole, e like me ka meaʻai, nā lāʻau lapaʻau, nā mea hoʻonaninani, a me ka mālama pilikino, ma muli o kāna ʻano wai maikaʻi loa, mānoanoa, hoʻopaʻa, a me nā waiwai emulsifying.

ʻOihana Meaʻai

I ka ʻoihana meaʻai, hoʻohana maʻamau ʻia ʻo SCMC ma ke ʻano he mānoanoa, stabilizer, a me ka emulsifier i kahi ākea o nā huahana meaʻai, e like me nā meaʻai i hoʻomoʻa ʻia, nā huahana dairy, nā kīʻaha, nā lole, a me nā mea inu. Hoʻohana pū ʻia ʻo SCMC ma ke ʻano he momona momona i nā meaʻai haʻahaʻa momona a hoʻemi ʻia-calorie.