Hoʻohana ʻo CMC i ka ʻoihana Detergent

ʻO Carboxymethyl cellulose (ʻike pū ʻia ʻo CMC a me ka sodium carboxymethyl cellulose) hiki ke wehewehe ʻia he anionic water-soluble polymer, i hana ʻia mai ka cellulose kūlohelohe ma o ka etherification, e hoʻololi ana i ka hui hydroxyl me ka hui carboxymethyl ma ka cellulose Hoʻohana ʻia ʻo Chain carboxymethyl cellulose ma ke ʻano he binder, thickener, suspending agent a me ka mea hoʻopiha i nā noi like ʻole.

Kumukānāwai pane

ʻO nā hopena kemika nui o CMC ka hopena alkalization o cellulose a me ka alkali e hana i ka cellulose alkali a me ka hopena etherification o ka cellulose alkali a me ka waikawa monochloroacetic.

KaʻAnuʻu 1: Alkalization: [C6H7O2(OH) 3]n + nNaOH→[C6H7O2(OH) 2ONa ]n + nH2O

KaʻAnuʻu 2: Etherification: [C6H7O2(OH) 2ONa ]n + nClCH2COONa→[C6H7O2(OH) 2OCH2COONa ]n + nNaCl

ʻAno kemika

Hoʻomākaukau ʻia ka derivative cellulose me ka carboxymethyl substituent ma ka mālama ʻana i ka cellulose me ka sodium hydroxide e hana ai i ka cellulose alkali, a laila e hana me ka monochloroacetic acid. He 3 mau pūʻulu hydroxyl ka ʻāpana glucose e hoʻokumu ana i ka cellulose i hiki ke hoʻololi ʻia, no laila hiki ke loaʻa nā huahana me nā pae like ʻole. Ma ka awelika, hoʻokomo ʻia ka 1mmol o carboxymethyl no 1g o ke kaumaha maloʻo. ʻAʻole hiki ke hoʻoheheʻe ʻia i ka wai a dilute acid, akā hiki ke pehu a hoʻohana ʻia no ka chromatography hoʻololi ion. ʻO ka pKa o ka carboxymethyl ma kahi o 4 i ka wai maʻemaʻe a ma kahi o 3.5 i ka 0.5mol/L NaCl. He mea hoʻololi cation acid nāwaliwali a hoʻohana mau ʻia no ka hoʻokaʻawale ʻana i nā protein kūʻokoʻa a me nā kumu kumu ma ka pH 4 a i ʻole. Hiki ke hoʻoheheʻe ʻia ka poʻe me ka 40% o nā hui hydroxyl i pani ʻia e ka carboxymethyl i loko o ka wai e hana i kahi hopena colloidal viscosity paʻa.

Nā hiʻohiʻona huahana omea holoi holoi papa CMC

Ma hope o ka hoʻohui ʻia ʻana i ka mea hoʻomaʻemaʻe, kiʻekiʻe ke kūpaʻa, ʻikea, ʻaʻole hoʻi i ka lahilahi;

Hiki iā ia ke mānoanoa a hoʻopaʻa i ke ʻano o ka mea holoi wai;

ʻO ka hoʻohui ʻana i ka pauda holoi a me ka mea holoi wai hiki ke pale i ka lepo i holoi ʻia mai ka hoʻopaʻa hou ʻana i ka lole. ʻO ka hoʻohui ʻana i ka 0.5-2% i ka detergent synthetic hiki ke loaʻa nā hopena ʻoluʻolu;

Hoʻohana ʻo CMC i ka ʻoihana Detergent, Nuie kālele ana ka emulsification a me ka palekana colloid waiwai o CMC. Hiki i ka anion i hana ʻia i ka wā o ka holoi ʻana i ka manawa like ke hana i ka ʻili o ka holoi a me nā ʻāpana lepo i hoʻopiʻi maikaʻi ʻole ʻia, no laila e hoʻokaʻawale ʻia nā ʻāpana lepo i ka māhele wai a loaʻa ka hopena like ma ka ʻili o ka holoi paʻa. ʻO Repellent, pale i ka lepo mai ka waiho hou ʻana i ka lole holoi, hiki ke mālama i ke keʻokeʻo o nā lole keʻokeʻo, a me nā waihoʻoluʻu o nā lole kala.

Hana o CMC mamea holoi holoi

1. ʻO ka mānoanoa, ka hoʻopuehu a me ka emulsifying, hiki iā ia ke komo i nā ʻili o ka aila a puni nā kiko e hoʻopili ai i nā ʻili o ka ʻaila, i hoʻokuʻu ʻia nā ʻaila hinu a hoʻopuehu ʻia i loko o ka wai, a hana i kahi kiʻi hydrophilic ma luna o ka ʻili o nā mea i holoi ʻia, a laila e pale ai i ka ʻaila mai ka hoʻopili pololei ʻana i nā mea i holoi ʻia .
2. ʻO ke kūlana kiʻekiʻe o ka hoʻololi a me ka likeʻole, keʻike pono;
3. ʻO ka dispersibility maikaʻi i ka wai a me ke kūpaʻa resorption maikaʻi;
4. ʻO ka viscosity kiʻekiʻe a me ke kūpaʻa maikaʻi.