nkhani

Kaphatikizidwe ka alkyl polyglycoside butyl ethers

Katundu wofunikira pafupipafupi wa alkyl polyglycosides ndiwowonjezera kutulutsa. Komabe, m'mapulogalamu ambiri, izi zimawonedwa ngati zosathandiza. Chifukwa chake, palinso chidwi chopanga zotumphukira za alkyl polyglycoside zomwe zimaphatikiza ntchito yabwino yoyeretsa ndikungopanga thovu pang'ono. Poganizira cholinga ichi, alkyl polyglycoside butyl ether adapangidwa. Zimadziwika m'mabuku kuti alkyl glycosides amatha kutsekedwa ndi alkyl halides kapena dimethyl sulfate muzitsulo zamchere zamchere.

Pazinthu zamafakitale, zomwe zimachitika mumadzi amadzimadzi zimakhala zovuta chifukwa zinthu zopanda madzi sizingapeŵedwe popanda njira zina zogwirira ntchito. Chifukwa chake, njira yopanda madzi idapangidwa, yomwe yafotokozedwa mu Chithunzi 6. Alkyl polyglycoside imalowetsedwa mu riyakitala ndi kuchuluka kwa butyl chloride ndikutenthedwa mpaka 80 ℃. Zomwe zimachitika zimayambitsidwa ndi kuwonjezera potassium hydroxide monga chothandizira. Mukamaliza kuchitapo kanthu, zomwe zimasakanikirana zimachepetsedwa, potassium chloride precipitate imasefedwa ndipo owonjezera butyl chloride amachotsedwa. Mankhwalawa amapangidwa ndi ma alkyl polyglycosides osiyanasiyana ndi ma alkyl polyglycoside butyl ethers. Malinga ndi kusanthula kwa GC, chiŵerengero cha alkyl monoglycoside, alkyl mono-glycoside monobutyl ether ndi alkyl monoglycoside polybutyl ether ndi 1:3:1.5.

Chithunzi 6. Kaphatikizidwe ka alkyl polyglycoside butyl ethers

Zotsatira za etherification ya C12alkyl polyglycoside akuwonetsedwa mu Chithunzi 7. Zomwe zili mu monoglycoside zimatsika kuchokera kuzungulira 70% kufika kuchepera 20%. Nthawi yomweyo, mtengo wa monoether umakwera mpaka 50%. Monobutyl ether yochulukirapo imapezeka, ma ether a polybutyl amatha kupangidwa kuchokera pamenepo. Pokhapokha pambuyo pa 24hours pali kupanga kwakukulu kwa polybutyl ethers. Monga zikuyembekezeredwa, zomwe zili mu polyethers zimawonjezeka ndi nthawi yowonjezereka. Komabe, mtengo wa 20% sunapitirire. Digiri yapakati ya etherification ndi 1 ~ 3 butyl pa alkyl glycoside unit. Zotsatira za C12alkyl glycoside anali abwino kwambiri. Pankhani ya N =8 kapena 16 alkyl polyglycoside butyl ether, zotsatira zake zidawonongeka.

Kuchokera pazitsanzo zitatuzi zikuwonekeratu kuti zotumphukira za alkyl glycosides zimapezeka mosavuta.Zogwiritsidwa ntchito mwapadera zomwe zikuganiziridwa zimadaliranso zomwe zimachitika pamtunda wa zotumphukira izi.

Chithunzi 7. Kuchita kwa C12 alkyl polyglycoside ndi butyl chloride


Nthawi yotumiza: Apr-09-2021