Ko te Methylcellulose (MC) me te carboxymethylcellulose (CMC) he rua ngā momo cellulose e whakamahia whānuitia ana i roto i te kai, te rongoā, te hanga whare, te ahumahi matū me ētahi atu mara. Ahakoa he mea whakarerekē matū katoa ēnei mai i te cellulose tūturu, he rerekētanga nui kei roto i te hanganga matū, ngā āhuatanga ā-tinana me te matū, me ngā whakamahinga.
1. Te hanganga matū me te tukanga whakarite
Ka puta te methylcellulose mā te tauhohenga o te cellulose ki te methyl chloride (methanol rānei) i raro i ngā āhuatanga kawakore. I roto i tēnei tukanga, ka whakakapia tētahi wāhanga o ngā rōpū hydroxyl (-OH) i roto i ngā ngota cellulose e ngā rōpū methoxy (-OCH₃) hei hanga methylcellulose. Ko te nui o te whakakapinga (DS, te maha o ngā whakakapinga mō ia waeine hukahuka) o te methylcellulose e whakatau ana i ōna āhuatanga ā-tinana me te matū, pērā i te wairewatanga me te matotoru.
Ka puta te carboxymethylcellulose mā te tauhohenga o te cellulose ki te waikawa chloroacetic i raro i ngā āhuatanga kawakore, ā, ka whakakapia te rōpū hydroxyl e te carboxymethyl (-CH₂COOH). Ka pā te nui o te whakakapinga me te nui o te polymerization (DP) o te CMC ki tōna wairewatanga me te matotoru i roto i te wai. Ko te nuinga o te wā ka noho te CMC i roto i te ahua o te tote konutai, e kiia nei ko te sodium carboxymethylcellulose (NaCMC).
2. Ngā āhuatanga ā-tinana me ngā āhuatanga matū
Wairewatanga: Ka rewa te Methylcellulose ki te wai matao, engari ka ngaro te wairewatanga ka hanga he kirikiri i roto i te wai wera. Mā tēnei āhua whakahurihuri wera ka taea te whakamahi hei whakamātotoru me te whakakōpiri i roto i te tukatuka kai. Ka rewa te CMC i roto i te wai matao me te wai wera, engari ka heke te matotoru o tōna wairewa i te pikinga o te pāmahana.
Matatini: Ka pāngia te matatini o ngā mea e rua e te nui o te whakakapinga me te kukū o te otinga. Ka piki tuatahi te matatini o te MC, kātahi ka heke i te pikinga o te pāmahana, ko te matatini o te CMC ka heke i te pikinga o te pāmahana. Mā tēnei ka puta he painga ki a rātou i roto i ngā tono ahumahi rerekē.
Te pumau o te pH: Ka noho pumau te CMC i runga i te whānuitanga o te pH, inā koa i raro i ngā āhuatanga kawakore, ā, nā tēnei i tino rongonui ai hei whakaū me te whakamātotoru i roto i te kai me te rongoā. He tino pumau te MC i raro i ngā āhuatanga kūpapa me te paku kawakore, engari ka pirau i roto i ngā waikawa kaha, i ngā kawakore rānei.
3. Ngā wāhi tono
Ahumahi kai: He mea whakamahi noa te Methylcellulose i roto i te kai hei whakamātotoru, hei whakaemulsifier, hei whakaū hoki. Hei tauira, ka taea e ia te whai i te reka me te kakano o te ngako i te wā e hanga ana i ngā kai iti-ngako. He mea whakamahi whānuitia te Carboxymethylcellulose i roto i ngā inu, i ngā kai tunutunu me ngā hua miraka hei whakamātotoru me te whakaū hei ārai i te wehenga o te wai me te whakapai ake i te reka.
Ahumahi rongoā: Ka whakamahia te Methylcellulose i roto i te whakarite papa rongoā hei here me te wawahi, hei hinu whakahinuhinu me te kaihoko tiaki, pērā i roto i ngā pata kanohi hei whakakapi roimata. He whānuitia te whakamahinga o te CMC i roto i te rongoā nā te mea he pai te hototahi ki te koiora, pērā i te whakarite i ngā rongoā tuku-roa me ngā piripiri i roto i ngā pata kanohi.
Te hanga me te ahumahi matū: He whānuitia te whakamahinga o te MC i roto i ngā rauemi hanga hei whakamātotoru, hei pupuri wai, hei whakapiripiri hoki mō te sima me te gypsum. Ka taea e ia te whakapai ake i te mahi hanga me te kounga o te mata o ngā rauemi. He maha ngā wā ka whakamahia te CMC ki te maimoatanga paru i te keri hinu, te paru i roto i te tā me te tae kakahu, te paninga mata o te pepa, me ētahi atu.
4. Te haumaru me te tiaki taiao
E kiia ana he haumaru ngā mea e rua mō te whakamahi i roto i ngā mahi kai me ngā mahi rongoā, engari he rerekē pea ngā pānga o ō rāua pūtake me ngā tukanga whakaputa ki te taiao. Ko ngā rauemi mata o te MC me te CMC i ahu mai i te cellulose tūturu, ā, ka pirau, nō reira he pai te mahi a rāua i runga i te āhua o te taiao. Heoi, tera pea ka uru atu ki roto i te tukanga whakaputa ngā whakarewa matū me ngā matū tauhohenga, ka pā pea ki te taiao.
5. Te utu me te hiahia o te mākete
Nā te rerekētanga o ngā tukanga whakaputa, he nui ake te utu whakaputa o te methylcellulose, nō reira he nui ake hoki te utu mākete i te carboxymethylcellulose. Ko te tikanga he nui ake te tono mākete mō te CMC nā te whānui o te whakamahinga me te iti o ngā utu whakaputa.
Ahakoa he pūtake o te cellulose te methylcellulose me te carboxymethylcellulose, he rerekētanga nui kei roto i te hanganga, ngā āhuatanga, ngā tono me te tono mākete. Ko te Methylcellulose te mea e whakamahia nuitia ana i roto i ngā mara o te kai, te rongoā me ngā rauemi hangahanga nā te mea he rerekē tōna kaha ki te huri i te wera me te whakahaere matotoru teitei. Kua whānuitia te whakamahinga o te Carboxymethyl cellulose i roto i te kai, te rongoā, te hinu matū, te kakahu me ētahi atu ahumahi nā te mea he tino pai te wairewa, te whakarerekētanga matotoru me te whānui o te urutau pH. Ko te whiriwhiri i te pūtake o te cellulose e whakawhirinaki ana ki te horopaki tono me ngā hiahia motuhake.
Wā tuku: 20-Ākuhata-2024