HEC me HPMC

Te Pūtauora Waikawa (HEC)meTe Waikawa Waikawa Metilururo (HPMC)he etera cellulose kore-ionic, wairewa-wai ēnei e rua, i ahu mai i te cellulose tūturu. E whakamahia whānuitia ana ēnei i roto i ngā mahi ahumahi, rongoā, tiaki whaiaro, me te kai nā te mea he pai rawa atu ō rātou āhuatanga whakamātotoru, hanga kiriata, whakapūmau, me te whakaemulsifier. Ahakoa he rite tonu te takenga mai me te mahi, ko ō rātou rerekētanga i roto i te hanganga matū ka hua ake he āhuatanga ā-tinana me ngā whakamahinga motuhake.

1. Te Pūtake me te Hanganga Matū

Ngā Etera Cellulose

Ka hangaia te HEC me te HPMC mā te whakarerekē matū i te cellulose taiao, he pūmua i hangaia mai i ngā waeine β-D-glucose e honoa ana e ngā here glycosidic β(1→4). Kāore te cellulose e wairewa i roto i te wai, engari mā te whakarerekētanga matū, ka taea te huri hei matū wairewa-wai.

Te Pūtauora Waikawa (HEC)

Ka hangaia te HEC mā te tauhohenga o te cellulose ki te ethylene oxide, ka whakaurua ngā rōpū hydroxyethyl (-CH2CH2OH) i te mekameka polymer. Ka whakanui ake tēnei whakarerekētanga i te wairewatanga o te wai, ā, ka whakapai ake i te kaha o te polymer ki te hanga i ngā otinga mārama, pumau hoki. Ko te whakakapinga ka puta tuatahi i ngā pae hydroxyl (-OH) o ngā waeine anhydroglucose i roto i te mekameka cellulose.

Te Waikawa Waikawa Metilururo (HPMC)

Ka hangaia te HPMC mā te tauhohe i te cellulose ki te methyl chloride me te propylene oxide, ka hua ake te whakakapinga o ngā rōpū hydroxyl ki ngā rōpū methoxy (-OCH3) me te hydroxypropyl (-CH2CHOHCH3). Ka taea te whakarerekē i te ōwehenga o te methoxy ki te ihirangi hydroxypropyl kia rite ki ngā āhuatanga o te polymer.

2. Ngā Āhuatanga Ā-tinana

Te wairewatanga

HEC: Ka wairewa i roto i te wai wera me te wai matao, ka hanga he wairewa mārama, matotoru. Kāore e wairewa i roto i te nuinga o ngā whakarewa waro.

HPMC: Ka wairewa hoki i roto i te wai matao engari ka hanga he kirikiri ina werahia. Kāore e wairewa i roto i te wai wera engari ka pupuhi, ka hanga he kirikiri ka taea te huri ina werahia, he mea whai hua mō te tukunga rongoā tuku-whakahaere. Tērā pea ka wairewa ētahi momo i roto i ngā whakarewa waro pēnei i te etanoru, te acetone rānei.

Te matotoru

Ka taea te hanga i te HEC me te HPMC i ngā taumata matotoru rerekē. Ko te tikanga he mārama ake ngā otinga HEC, ā, he iti ake te aro ki te pāmahana. Ko te matotoru o te HPMC he pumau ake puta noa i te whānuitanga pH (3–11) ā, he pai te whanonga pseudoplastic (te angiangi kutikuti), he mea whai hua i roto i ngā paninga me ngā rongoā.

Te Whakawerawera

HEC: Kāore e whakaatu i te whakapūkara wera.

HPMC: E whakaatu ana i te whakapūmau wera. I te whakamahanatanga, ka huri te otinga polymer hei whakapūmau. Ka whakamahia tēnei i roto i ngā hanganga kai me ngā rongoā.

3. Ngā Āhuatanga Mahi

4. Ngā tono

Te Pūtauora Waikawa (HEC)

E whakamahia whānuitia ana te HEC i roto i ngā tono e hiahia ana ki te whakahaere me te whakaū i te matotoru, inā koa i roto i ngā pūnaha wai.

Ngā Peita me ngā Paninga: Whakamahia hei whakamātotoru me te whakau hei ārai i te taunga o te tae me te whakapai ake i ngā āhuatanga tono.

Tiaki Whaiaro: Kei roto i ngā hopi horoi makawe, ngā whakangawari makawe, me ngā hinu whakangawari mō ōna āhuatanga whakamātotoru me te whakarerekē i te reo o te kiri.

Rongoā: Whakamahia hei here me te whakamātotoru i roto i ngā whakatakotoranga kiri.

Hanganga: I roto i te sima me te moata hei pupuri wai, hei whakarei ake hoki i te mahi.

Ngā Matū o te Mara Hinu: Whakamahia i roto i ngā wai keri hei whakahaere i te matotoru me te aukati i te ngaronga o te wai.

Te Waikawa Waikawa Metilururo (HPMC)

He mea rongonui te HPMC mō tōna whakamahinga maha i roto i ngā pūnaha tuku rongoā hydrophilic me ngā pūnaha tukunga rongoā whakahaere-tuku, me te mahi hei here, hei hanga kiriata rānei.

Rongoā: E whakamahia whānuitia ana i roto i ngā papa waha (hei here, hei paninga, hei hanga matrix rānei mō te tukunga roa), ngā otinga kanohi, me ngā kirimi paninga.

Ahumahi Kai: Kua whakaaetia hei tāpiringa kai (E464) ā, e whakamahia ana hei whakamātotoru, hei whakaemulsifier, hei whakaū hoki.

Hanganga: Whakamahia ki roto i ngā moata ranunga maroke, ngā piripiri taera, me ngā pāreti hei whakapai ake i te pupuri wai, te piri, me te ngāwari ki te mahi.

Ngā mea whakapaipai: Whakamahia i roto i ngā kirīmi, ngā kirikiri, me ngā pata kanohi.

Ngā peita: He rite ki te HEC, e whakamahia ana i roto i ngā hanganga wai-hanga mō te whakahaere i te rheology

5. Ngā Rerekētanga Matua

6. Haumaru me te Hototahi ki te Koiora

E kiia ana he haumaru, he kore-paitini hoki te HEC me te HPMC. Kāore e mimitia ā-tinana ina whakamahia ā-waha, ā-waha rānei i roto i ngā kukū noa. He GRAS (Generally Recognised as Safe) te HPMC, ā, e whakamahia whānuitia ana i roto i ngā ahumahi rongoā me te kai nā te mea he pai rawa te hototahi ki te koiora me te whakaaetia e ngā ture.

HEC me HPMC he maha ngā momo mahi, ngā pūmua wairewa-wai me ngā āhuatanga motuhake kua whakaritea mō ngā hiahia ahumahi me ngā rongoā motuhake. Ahakoa e whakarato ana i ngā mahi whakamātotoru me te whakapūmau pai rawa atu, ka tū te HPMC i roto i ngā tono rongoā me te kai nā tōna whakawera wera me te hototahitanga koiora. Ko te HEC, i tetahi atu ringa, he nui ake te kitea i roto i ngā tono wai pēnei i ngā peita me ngā mea whakapaipai nā tōna mārama me te ōrite i roto i ngā pūnaha wai.