He cellulose te hydroxypropyl methylcellulose me te hydroxyethyl cellulose.

Te Hydroxypropyl methylcellulose (HPMC)me te hydroxyethyl cellulose (HEC) he rua ngā matū hiranga e whakamahia whānuitia ana i roto i ngā ahumahi maha nā ō rāua āhuatanga ahurei. Ahakoa i ahu mai i te cellulose ngā mea e rua, he rerekē ngā hanganga matū, ā, he rerekē hoki ngā āhuatanga me ngā whakamahinga.

1. He Kupu Whakataki ki ngā Hua Pūtau:
Ko te cellulose he polysaccharide tūturu e kitea ana i roto i ngā pakitara pūtau tipu, he mea tito mai i ngā mekameka raina o ngā waeine hukahuka e honoa ana e ngā here glycosidic β(1→4). Ka whiwhihia ngā matū whakaputanga cellulose mā te whakarerekē matū i te cellulose hei whakarei ake i ngā āhuatanga motuhake, hei whakauru rānei i ngā mahi hou. Ko te HPMC me te HEC e rua ngā matū whakaputanga e whakamahia whānuitia ana i roto i ngā ahumahi mai i ngā rongoā ki te hanga whare.

2. Te Hanganga:
Ka hangaia te HPMC mā te tauhohenga o te cellulose ki te propylene oxide hei whakauru i ngā rōpū hydroxypropyl, ā, muri iho ko te methyl chloride hei whakauru i ngā rōpū methyl. Ko te hua o tēnei ko te whakakapinga o ngā rōpū hydroxyl i roto i te mekameka cellulose, ka puta he hua me te wairewatanga pai ake me ngā āhuatanga hanga kiriata.

Ko te HEC, i tētahi atu taha, ka puta mā te tauhohenga o te cellulose ki te ethylene oxide hei whakauru i ngā rōpū hydroxyethyl. Ka taea te whakahaere i te nui o te whakakapinga (DS) i roto i te HPMC me te HEC mā te whakarerekē i ngā āhuatanga tauhohenga, e pā ana ki ō rātou āhuatanga pēnei i te matotoru, te wairewa, me te whanonga whakarewa.

3. Hanganga Matū:
He rerekē ngā momo rōpū whakakapinga e piri ana ki te tuara o te cellulose i waenga i te HPMC me te HEC. Kei roto i te HPMC ngā rōpū hydroxypropyl me te methyl, ko te HEC ia kei roto ngā rōpū hydroxyethyl. Ka whakawhiwhia e ēnei whakakapinga ngā āhuatanga ahurei ki ia pārōnaki, ka awe i ō rātou whanonga i roto i ngā tono rerekē.

4. Ngā Āhuatanga Ā-tinana:
He pūmua wairewa-wai te HPMC me te HEC, ā, he tino pai ō rātou āhuatanga whakamātotoru. Heoi, he rerekē te matotoru, te kaha whakamākūkū, me te kaha hanga kiriata i waenganui i a rāua. He nui ake te matotoru o te HPMC i te HEC i ngā kukū ōrite, ā, he pai mō ngā tono e hiahia ana kia nui ake te matotoru.

Hei tāpiritanga, ka hangaia e te HPMC he kiriata mārama ake, he kiriata piripono ake nā ōna matū whakakapinga methyl, engari ko te HEC ka hangaia he kiriata ngawari ake, he kiriata ngāwari ake. Nā ēnei rerekētanga o ngā āhuatanga kiriata ka pai ai ia momo kiriuhi mō ngā tono motuhake i roto i ngā rongoā, ngā hua tiaki whaiaro, me ngā ahumahi kai.

5. Ngā tono:
5.1 Te Ahumahi Rongoā:
E whakamahia whānuitia ana te HPMC me te HEC i roto i ngā whakatakotoranga rongoā hei here, hei whakamātotoru, hei āpitihanga kiriata hoki. Ka whakapai ake rāua i te pumau o ngā papa, ka whakahaere i te tukunga rongoā, ā, ka whakarei ake i te reka o te waha i roto i ngā whakatakotoranga wai. Ko te HPMC te mea e pai ake ana mō ngā whakatakotoranga tuku-roa nā te mea he puhoi ake te tere o te makuku, ko te HEC ia e whakamahia whānuitia ana i roto i ngā otinga kanohi me ngā kirīmi kiri nā te mea he mārama, he hototahi hoki ki ngā wai koiora.

5.2 Te Ahumahi Hanga:
I roto i te umanga hanga,HPMCmeHECe whakamahia ana hei tāpiri i roto i ngā rauemi sima, pērā i ngā moata, ngā grouts, me ngā renders. Ka whakapai ake i te mahi, te pupuri wai, me te piri, ka hua ake he pai ake te mahi me te roa o te hua whakamutunga. He pai ake te HPMC mō tōna kaha pupuri wai teitei ake, e whakaiti ana i te pakaru me te whakapai ake i te wā whakatakoto.

5.3 Ngā Hua Tiaki Whaiaro:
Ka kitea ngā whakamahinga o ngā mea e rua i roto i ngā hua tiaki whaiaro pērā i ngā hopi horoi makawe, ngā hinu kiri, me ngā kirimi hei whakamātotoru, hei whakaemulsifier, hei whakaū. Ka hoatu e te HEC he kakano maeneene, he kanapa hoki ki ngā hanganga, kia pai ai mō ngā hua tiaki makawe me ngā kirimi kiri. Ko te HPMC, me ōna āhuatanga hanga kiriata pai rawa atu, ka whakamahia i roto i ngā hinu ārai rā me ngā hanganga whakapaipai e hiahia ana kia ātete ki te wai me te mau roa.

5.4 Te Ahumahi Kai:
I roto i te umanga kai, ka mahi te HPMC me te HEC hei kaiwhakamātotoru, hei whakaū, hei whakakaha i ngā momo hua tae atu ki ngā ranu, ngā ranu, me ngā kai reka. Ka whakapai ake i te reka o te waha, ka ārai i te mahi tahi, ā, ka whakarei ake i ngā āhuatanga o ngā hanganga kai. He pai ake te HPMC mō tōna māramatanga me tōna pumau i te wera, ā, he pai mō ngā tono e hiahia ana ki ngā kirikiri mārama me ngā ranunga pumau.

6. Whakamutunga:
Ko te hydroxypropyl methylcellulose (HPMC) me te hydroxyethyl cellulose (HEC) he matū whakaputanga cellulose me ōna hanganga matū, āhuatanga, me ngā whakamahinga motuhake. Ahakoa he pai rawa ngā āhuatanga whakamātotoru me te hanga kiriata e rua, he rerekē te matotoru, te mārama o te kiriata, me te whanonga wai. He mea nui te mārama ki ēnei rerekētanga hei whiriwhiri i te matū whakaputanga tika mō ngā whakamahinga motuhake puta noa i ngā ahumahi pēnei i te rongoā, te hanga, te tiaki whaiaro, me te kai. I te haere tonu o te rangahau ki te ahu whakamua, e matapaetia ana ētahi atu whakarerekētanga me ngā whakamahinga o ngā matū whakaputanga cellulose, ka whai wāhi ki tō rātou hiranga tonu i roto i ngā momo ahumahi.