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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 19, Number 6
JKCSEZ 19(6)
December 20, 1975 

Light Scattering Studies on the Second CMC of the Aqueous Solution of Dodecyl Pyridinium Chloride and Tetradecyl Pyridinium Chloride

광산란에 의한 Dodecyl Pyridinium Chloride 및 Tetradecyl Pyridinium Chloride 수용액의 제 2 CMC에 관한 연구
Moo Ill Chung, In Ja Tak, Kun Moo Lee

정무일, 탁인자, 이근무
Dodecyl pyridinium chloride(DPC)와 tetradecyl pyridinium chloride(TPC) 수용액의 0~70mM 농도영역에서의 광산란연구로 각각 약 17mM과 3.5mM에 있는 제일 cmc외에 제이 cmc가 각각 약 43mM과 8mM에 있음을 알 수 있다. 제이 cmc는 첨가물 KCl에 의하여 크게 영향을 받고 이로 인하여 제이 cmc는 저하된다. 제일 cmc에서의 DPC와 TPC 수용액의 미셀분자량은 각각 20,800과 15,600이었고 그들 미셀의 이온화도는 각각 0.092와 0.226이었다.

The light scattering studies of the aqueous solution of dodecyl pyridinium chloride (DPC) and tetradecyl pyridinium chloride (TPC) over the concentration range of 0~70 mM revealed that there exists a so-called 2nd critical micelle concentration (cmc) at about 43 mM and 8 mM respectively in addition to their 1st cmc at 17 mM and 3.5 mM. The 2nd cmc was greatly influenced by additives KCl, which lowered the 2nd cmc. The micelle molecular weight of DPC and TPC solutions at 1st cmc were 20800 and 15600 and the degree of ionization of their micelles at 1st cmc were 0.092 and 0.226 respectively.

398 - 402
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