The Viscosity of Aqueous Sodium Dodecyl Sulfate Solution and the Effect of Inorganic Electrolytes on It

Abstract

The viscosity of aqueous sodium dodecyl sulfate solution and the effect of inorganic electrolytess were investigated. Linearity between the logarithm of the viscosity and concentration of sodium dodecyl sulfate until 25%, was observed. The viscosity of aqueous sodium dodecyl sulfate lowered when small amount of inorganic electrolytes were added, but increased when large amount of them were added. The viscosity was also affected by ionic valence of anion of inorganic electrolyte. 1•• OE¾ ŠE-ÊŠˆ•ÊŠˆ•« •Ü•…-n‰t‚Ì "S "x ‚Í Šó"-n ‰t‚Å‚Í ƒ~ƒZƒ‹ ‚Ì •\ '¢ ‚ÉŠÖ˜A ‚µ ‚Ä•Ú ‚µ ‚-'² ‚× ‚ç ‚ê ‚Ä‚¢ ‚é1)‚ª,"Z OEú-n ‰t‚É ‚‚¢ ‚Ä ‚Ì OE¤‹ † ‚Í •-‚È‚¢ •B ‚» ‚± ‚ÅŠE-ÊŠˆ•ÊŠˆ•« •Ü ‚AE‚µ ‚Ä ƒhƒf ƒVƒ‹-° Ž_ƒi ƒgƒŠƒEƒ€(SDS‚AE-ª‚·)‚ð-p‚¢ ‚Ä,2‚© ‚ç15% ‚Ì "ä Šr "I "ZOEú‚È-n ‰t‚Ì "S •« ‚AE‚» ‚ê ‚É‹y ‚Ú‚·-³ ‹@"d ‰ð Ž¿ ‚Ì ‰e ‹¿ ‚ð '² ‚× ‚½•BŠó"-n‰t‚É ‚¨‚¢‚¨‚¢ ‚Ä‚ÍSDS‚Ì ƒ~ƒZƒ‹ ‚Í ‚» ‚Ì "d ‹C "S •« OEø‰Ê ‚¨‚ae‚Ñ‚¨‚ae‚Ñ•…˜a ‚Ì OEø‰Ê ‚É ‚ae ‚Á‚Ä-n ‰t‚Ì "S •« ‚ð •‚ ‚ß ‚Ä‚¢ ‚é ‚± ‚AE‚ª OE© ‚¢ ‚¾‚³ ‚ê ‚Ä‚¢ ‚é2>•B-³ ‹@"d ‰ð Ž¿ ‚Ì ‰e ‹¿ ‚AE‚µ ‚Ä‚Í,‰-‰» ƒi ƒgƒŠƒEƒ€‚Å ‚Í ‚± 'Ê ‚è ‚ÌˆÙ‚ÌˆÙ ‚È ‚Á‚½‰e ‹¿ ‚ª ‚ ‚é •Bˆê ‚Â‚Í •-Ê ‚Ì ‰-‰»ƒi ƒgƒŠƒEƒ€ ‚É ‚ae ‚é "d ‹C "S •« OEø ‰Ê ‚Ì 'á ‰º‚Å ‚ ‚è,"ñ ‚Â‚Í '½-Ê ‚Ì "Y‰Á ‚É ‚ae ‚é ƒQƒ‹ ‰»OE» •Û3) ‚¨‚ae‚¨‚ae ‚щ-•Í ‚Å‚ ‚é •B ‚± ‚ê ‚ç ‚AE‚Ì ŠÖ˜A ‚É‚¨‚¢‚É‚¨‚¢ ‚Ä,"ä Šr "I •‚ ‚¢SDS‚Ì "Z"x "Í ˆÍ ‚Ì "S •« ‚ð 'ª 'è ‚µ,•l Ž@ ‚ð •s ‚È ‚Á‚½•B 2ŽÀ OE± 2•E OEAŽŽ-¿ 2•E1•E1ƒh ƒf ƒVƒ‹-°Ž_ƒi ƒgƒŠƒEƒ€(SDS) SDS‚Í •Î-û ‚±nˆê ƒeƒ‹ ‚É ‚ae ‚è-¢ "½‰ž •¨ ‚ð 'Š •o OEã99% ƒGƒ`ƒGƒ`ƒ‹ ƒAƒ‹ Ž¯ˆê ƒ‹ ‚Å-n ‰ð‚µ ‚È ‚¢-³ ‹@‰-‚ð •oe‹Ž ‚µ,•Å OEã‚É •…ˆêƒGƒ`…ˆêƒGƒ`ƒ‹ ƒAƒ‹ ƒR•[ ƒ‹(5:95vo1/vo1)•¬ • ‡-n "} ‚Å•ÄOE‹•» ‚³ ‚¹99.5%‚Ì •¸ •» •i ‚ð "¾‚½•B•s •ƒ •¨ ‚Ì 'å •" •ª ‚Í •…•ª ‚Å ‚ ‚é •B ƒAƒ‹ ƒLƒ‹ Šî ‚Ì 'g •¬ ‚Íq•A0•B6%,q•A94.2%,C•A4 5.2%‚Å ‚ ‚Á‚½•B 2•E1•E2-³ ‹@"d ‰ð Ž¿-³ ‹@"d ‰ð Ž¿ ‚AE‚µ ‚Ă͘a‚Ă͘a OEõ•ƒ-òKK‚© ‚ç •w"ü ‚µ ‚½ŽŽ-ò "Á‹‰•» ‚Ì ‰-‰» ƒi ƒgƒŠƒEƒ€,-° Ž_ ƒi ƒgƒŠƒEƒ€,ƒŠ ƒ"Ž_ ƒi ƒg ƒŠƒEƒ€(Na•APO•A),ƒs ƒ• ƒŠƒ"Ž_ ƒi ƒgƒŠƒEƒ€,'Y Ž_ ƒJ ƒ‹ ƒV ƒEƒ€ ‚ð-p ‚¢ ‚½.-ì2-n ‰t‚Ì '² •® SDS‚Í1o,15,2ƒÂg/dl‚Ì •…-n ‰t‚ð '² •® ‚µ ‚Ä'™' 1‰t ‚AE‚µ ‚½•B ƒGƒv ƒgƒ"-@‚É ‚ae ‚è"Z"x ‚ð OEˆ'è ‚µ ‚½•BSDS•…-n ‰t‚Ì "S "x ‚Ì "Z"xˆË ' ¶ •« ‚¨‚ae‚Ñ‚¨‚ae‚Ñ-³ ‹@‰-‚É ‚ae ‚é"S "x •Ï ‰» ‚Í-n ‰t‚ª •‚ "S •« ‚É ‚È ‚é•ê • ‡ ‚ð •oe ‚¢ ‚Ä,Šó Žß"S "x OEv‚É ‚ae ‚è'ª 'è ‚µ ‚½•B•‚ "S •«-n ‰t‚Ì-g • ‡ ‚Í,‰t ‚ð '² •®OEã1"ú ˆÈ•ã •ú 'u ‚µ ‚Ä‚© ‚ç'ª 'è ‚µ ‚½•B-³ ‹@"d ‰ð Ž¿ ‚Í1.5‚È ‚¢ ‚µ2N‚Ì "Z"x •…-n ‰t‚ð '² •® ‚µ,"Z "x ‚ð OEˆ'è ‚µ,‚» ‚ê ‚ð ŠóŽß ‚µ ‚Ä-p ‚¢ ‚½•B 2•E3"S "x ‚Ì 'ª 'è ƒE ƒbƒx ƒ• •[ ƒf OE^-Ñ•× ŠÇ"S "x OEv‚É ‚ae ‚è"S "x ‚ð 'ª 'è ‚µ ‚½•B 'ª 'è 'l ‚É ‚Í ‰^ "®ƒGƒl ƒ‹ ƒM •[ ‚Ì •â •³ ‚ð •s ‚È ‚Á‚½•B •\-Ê'£-Í ‚É ‚ae ‚é •â •³ ‚Í •s ‚È‚í ‚È ‚©‚Á‚½•B 'ª 'è ‚Í3‰ñˆÈ‚Í3‰ñˆÈ •ã OEJ ‚è•Ô ‚µ,•½ ‹Ï 'l ‚ð ‚AE‚Á‚½•B •…-n ‰t‚Ì "ä •d ‚Í ƒI ƒX ƒgƒ• ƒ‹ ƒh"ä •d OEv‚É ‚ae ‚è'ª 'è ‚µ ‚½•B 'ª 'è ‚Í ‚¨‚à‚¨‚à ‚É25•Ž ‚Å•s ‚È‚¢,‚» ‚ê ˆÈ ŠO‚Ì ‰·"x ‚Å'ª 'è ‚µ ‚½ ‚AE‚« ‚Í,‚» ‚Ì ‰· "x ‚ð •} •\ ‚É‹L ‚µ ‚½•B 3OE‹ ‰Ê ‚AE •l Ž@ 3•E1SDS•…-n ‰t‚Ì "S "x 25%‚Ü ‚Å‚ÌSDS•…-n ‰t‚Ì "S "x ‚Ì 'Î •" ‚ÍFig•E ˆê1‚É Ž¦ ‚· ‚ae ‚¤ ‚ÉSDS‚Ì "Z"x ‚É'Î ‚µ ‚Ù‚Ú'¼•ü ŠÖOEW ‚𠎦 ‚· •B ‚± ‚ê ‚ð ŠÒOE³"S "x ‚AE"Z "x ‚Ì ŠÖOEW ‚ÅŽ¦ ‚· ‚AE •Eg•Eáš ‚AE‚È ‚é •• 2‚© ‚ç15%‚Ì "Z"x "Í ˆÍ ‚Å‚ae ‚¢ '¼•ü •« ‚𠎦 ‚· ‚± ‚AE‚ª-¾ ‚ç ‚©‚Å ‚ ‚é •B ‚± ‚Ì ‚± ‚AE‚Í ‚± ‚Ì "Z"x"Í ˆÍ ‚ÅSDS‚Ì ƒ~ƒZƒ‹ 30