Ko te propylene glycol he matū e kitea pinepine ana i roto i te rārangi kai o ngā whakapaipai mō te whakamahinga o ia rā. Ko ētahi he 1,2-propanediol, ko ētahi he1,3-propanediol, he aha te rerekētanga?
Ko te 1,2-Propylene glycol, CAS Nama 57-55-6, te tātai ngota C3H8O2, he matū matū, ka taea te whakaranu ki te wai, te etanoru me ngā whakarewa waro maha. He wai matotoru kore tae i roto i te āhua noa, tata kore kakara, ā, he reka paku ki te kakara pai.
Ka taea te whakamahi hei mea whakamakuku i roto i ngā mea whakapaipai, i te paraihe niho me te hopi me te glycerin, te sorbitol rānei. Ka whakamahia hei mea whakamakuku me te whakataurite i roto i ngā tae makawe, hei mea ārai huka hoki.
1,3-PōpirīneKo te glycol, CAS Nama 504-63-2, ko te tātai ngota ko C3H8O2, he wai kore tae, kore kakara, tote, matotoru hygroscopic, ka taea te waikura, te whakaesterified, te whakaranu ki te wai, te whakaranu ki te etanoru, te ether.
Ka taea te whakamahi i roto i te hanga i ngā momo rongoā maha, ngā PTT polyester hou, ngā takawaenga rongoā me ngā antioxidants hou. Koinei te rauemi mata mō te hanga polyester kore-mākū, te plasticizer, te surfactant, te emulsifier me te emulsion breaker.
He rite te tātai ngota o ngā mea e rua, ā, he isomer anō hoki.
E whakamahia ana te 1,2-Propylene glycol hei kaihoko huakita, hei kaiwhakatairanga urunga rānei i roto i ngā mea whakapaipai i ngā kukū tiketike.
I ngā kukū iti iho, ka whakamahia whānuitia hei whakamakuku kiri, hei āwhina horoi rānei.
I ngā kukū iti iho, ka taea te whakamahi hei whakarewa-whakamua mō ngā matū hohe.
He rerekē rawa te riri me te haumaru o te kiri i ngā kukū rerekē.
Ko te 1,3-Propylene glycol te nuinga o te wā e whakamahia ana hei whakarewa i roto i ngā mea whakapaipai. He whakarewa polyol makuku waro e āwhina ana i ngā kai whakapaipai kia uru ki roto i te kiri.
He nui ake tōna kaha whakamakuku i te glycerin, te 1,2-propanediol me te 1,3-butanediol. Kāore he piri, kāore he kare ā-wera, ā, kāore he raruraru riri.
Ko ngā tikanga whakaputa matua o te 1,2-propanediol ko:
1. Tikanga whakamakuku waikura propylene;
2. Tikanga whakahāora tika o te propylene;
3. Tikanga whakawhiti ester; 4. Tikanga hanga waikura glycerol.
Ko te nuinga o te wā ka hangaia te 1,3-Propylene glycol e:
1. Tikanga wai acrolein;
2. Tikanga waikura etirena;
3. Tikanga hanga waikura karāhe;
4. Tikanga moroiti.
He nui ake te utu o te 1,3-Propylene glycol i te 1,2-Propylene glycol.1,3-PōpirīneHe uaua ake te whakaputa i te glycol, ā, he iti ake te hua, nō reira he nui tonu te utu.
Heoi, e whakaatu ana ētahi kōrero he iti ake te whakapataritari me te kore e whakararuraru i te kiri i te 1,3-propanediol i te 1,2-propanediol, tae noa ki te taumata kāore he tauhohenga whakararuraru.
Nō reira, i ngā tau tata nei, kua whakakapia e ētahi kaihanga te 1,2-propanediol ki te 1,3-propanediol i roto i ngā kai whakapaipai hei whakaiti i te mamae ka pā ki te kiri.
Kāore pea te mamae o te kiri e puta mai ana i ngā mea whakapaipai e puta mai ana i te 1,2-propanediol, i te 1,3-propanediol rānei anake, engari ka puta mai anō hoki i ngā āhuatanga maha. I te hohonu haere o te whakaaro o te tangata mō te hauora me te haumaru o ngā mea whakapaipai, ka akiakihia e te kaha o te tono a te mākete te tini o ngā kaihanga ki te whakawhanake i ngā hua pai ake hei whakatutuki i ngā hiahia o te nuinga o te hunga e aroha ana ki ngā mea ataahua!
Wā tuku: Hepetema-29-2021