ޣ✜⺰ޤ
ޓࠞࡏࡦ࠽ࡁ࠴ࡘࡉ(CNT)ߪ㧘᭽ޘߥಽ㊁ ߢᵈ⋡ࠍ㓸㧘⎇ⓥ㧘㐿⊒߇ⴕߥࠊࠇߡࠆ‛
⾰ߢࠆ㧚ߎࠇߪCNTߩ᭴ㅧ߇㕖Ᏹߦ․ᓽ⊛ߢ
ࠅ㧘ᄙߊߩ․ᕈࠍ⊒ߔࠆߎߣߦࠃࠆ㧚CNT ߩᱧผߪᵻߊ㧘1991ᐕ㧘ࠕࠢ㔚ᴺߦࠃࠆࡈ
ࡦᚑߦ↪ߐࠇߚ⚛㔚ᭂਛߩᾓߩ㗼 ᓸ㏜ⷰኤᤨߦ⊒ߐࠇ
1)㧘ਛⓨ⁁ߢ⌀ߞ⋥ߋߥ
⚛ߛߌߢ᭴ᚑߐࠇࠆ‛⾰ߢࠆߎߣ߇⍮ࠄࠇ ߡࠆ
2)㧚ࠣࡈࠚࡦࠪ࠻ߣ߫ࠇࠆࠣࡈ ࠔࠗ࠻ጀࠍਣߡߟߥ߉ࠊߖߚ᭴ㅧࠍߒ㧘 ߎߩࠣࡈࠚࡦࠪ࠻ߩᏎ߈ᣇߩ㆑ߦࠃߞߡ CNT⥄りߩ㔚᳇⊛ᕈ⾰ߪ㊄ዻ㧘ඨዉߣᄌൻߔ ࠆ㧚߹ߚᯏ᪾⊛ᒝᐲ߇ᄢ߈ߊ㧘ᣂߚߥ᧚ᢱߣߒ ߡߩน⢻ᕈ߇ᦼᓙߐࠇߡࠆߒ߆ߒ㧘CNTߪ ࡃࡦ࠼࡞ߣࠃ߫ࠇࠆಝ㓸᭴ㅧࠍᒻᚑߔࠆ㧚ߎߩ ߚ㧘᳓߅ࠃ߮ᯏṁᇦਛߢቯߒߚಽᢔ⁁ᘒ ࠍᜬߔࠆߎߣ߇࿎㔍ߢࠅ㧘ᔕ↪ൻߩᅹߍߣ ߥߞߡࠆ㧚
ޓᧄ⎇ⓥߢߪ㧘MWNT㕙ߦⷫ᳓ᕈ㜞ಽሶߩዉ
ࠍⴕ㧘ಽᢔᕈߩะࠍᬌ⸛ߒߚ㧚MWNT
㕙ߪਇᵴᕈߢࠆߚ㧘ࠄ߆ߓ㉄⚛ࡊ࠭
ࡑಣℂߦࠃࠅ㉄⚛ၮࠍMWNT㕙ߦዉߒ㧘
ᔕߩᵴᕈὐߣߒߚ㧚ߘߩᓟࡊ࠭ࡑ㊀วᔕ ߦࠃߞߡⷫ᳓ᕈ㜞ಽሶࠍMWNT㕙ߦᒻᚑߒ㧘
㕙ᡷ⾰ࠍⴕߞߚ㧚㉄ႮၮṢቯߦࠃࠅࡊ࠭ࡑ
㊀วᔕߦࠃߞߡዉߐࠇߚ㜞ಽሶ㎮ߩቯ㊂ࠍ ⴕ㧘ࡈࠛᄌ឵⿒ᄖಽశᴺ(FT-IR)ࠍ↪ߡ ᡷ⾰ߦࠃࠆMWNT߳ߩቭ⢻ၮߩዉ㧘⚡ᄖนⷞ ๆశశᐲ᷹ቯߦࠃࠅಽᢔᕈߩᄌൻࠍ⺞ᩏߒߚ㧚 ޣታ㛎ޤ
ޝ㉄⚛ࡊ࠭ࡑಣℂޞ
ޓᔕᕈߩૐMWNT㕙߳ߩ㜞ಽሶ㎮ߩዉ
ࠍኈᤃߦߔࠆߚ㧘㉄⚛ၮࠍ㕙ߦᒻᚑߒ ߚMWNT(MWNT-OH)ࠍߒߚ㧚MWNTࠍ㉄
⚛㔓࿐᳇ਅ㧘㔚ᵄᢙ13.56 MHz㧘㉄⚛ࠟࠬ
ജ100 Pa㧘㔚ജ100 Wߢᚲቯᤨ㑆ࡊ࠭
ࡑᾖࠍⴕߥ㧘MWNT㕙ߦ㉄⚛ၮࠍᒻ ᚑߒߚ㧚
ޝࡊ࠭ࡑ㊀วᴺޞ
ޓ㉄⚛ࡊ࠭ࡑಣℂᓟߩMWNT㕙ߩ㉄⚛
ၮࠍᔕㇱߣߒ㧘㔚ᵄᢙ13.56 MHz㧘ࡕ ࡁࡑࠟࠬജ100 Pa㧘㔚ജ50 Wߩ᧦ઙਅ ࡊ࠭ࡑ㊀วᔕࠍⴕߞߚࡕࡁࡑߣߒߡⷫ
᳓ᕈቭ⢻ၮࠍߔࠆࠕࠢ࡞㉄(AA)ࠍ↪ߚ㧚 એߩᠲߦࠃࠅMWNT㕙ߦ㜞ಽሶ㎮ࠍᒻᚑ ߒߚ㧚
ޝ㉄ႮၮṢቯޞ
ޓࡊ࠭ࡑ㊀วᔕߦࠃࠅ㜞ಽሶ㎮ࠍዉߒߚ MWNT(PAA-g-MWNT)ߦኻߒߡ㉄ႮၮṢቯࠍⴕ
㧘Ṣቯ୯߆ࠄ㜞ಽሶ㊂ࠍ▚ߒߚ㧚PAA-g- MWNTࠍ10 mg⒊㊂ᓟ㧘1.0 mol/Lߩ᳓㉄ൻ࠽࠻
࠙ࡓ᳓ṁᶧߦᶐẃߐߖ㧝ᤨ㑆㖸ᵄಣℂࠍⴕ
㧘චಽߦࠞ࡞ࡏࠠࠪ࡞ၮߩਛࠍⴕߥߞߚ㧚 ߎߩᤨߩᔕࠍScheme 㧝ߦ␜ߒߚ㧚
ߎߩᤨ↢ᚑߒߚ࠽࠻࠙ࡓႮࠍ⚐᳓ߢᵞᵺᓟ㧘 ỹߒ㧘࿁ߒߚ㧚࠽࠻࠙ࡓႮࠍ0.1 mol/Lߩ Ⴎ㉄᳓ṁᶧߦᶐẃߒ㧘㖸ᵄಣℂࠍⴕߥ㧘ච ಽߦᔕߐߖߚ㧚ߎߩᤨߩᔕࠍScheme 㧞ߦ
␜ߒߚ㧚
ỹߦࠃࠅᓧࠄࠇߚỹᶧߦኻߒߡ1.0 mol/Lߩ᳓
㉄ൻ࠽࠻࠙ࡓ᳓ṁᶧߢṢቯࠍⴕ㧘ㆊߥႮ
㉄᳓ṁᶧߩỚᐲࠍቯߒߚ㧚ߎߩႮ㉄᳓ṁᶧỚ ᐲ߆ࠄ㧘ࠞ࡞ࡏࠠࠪ࡞ၮߩ㊂ࠍ▚ߒߚ㧚ࠞ࡞
ࡏࠠࠪ࡞ၮߪ㜞ಽሶ➅ࠅߒනਛ㧝ߟ߇
ߐࠇࠆߩߢ㧘ࠞ࡞ࡏࠠࠪ࡞ၮߩᢙߣ㜞ಽሶ㎮ߩ
➅ࠅߒනߩᢙߪ৻⥌ߒ㧘MWNTߩ⚛ᢙߦ ኻߔࠆ㜞ಽሶ㊂ߩഀวࠍ᳞ࠆߎߣ߇ߢ߈ࠆ㧚 ޝࡈࠛᄌ឵⿒ᄖಽశᴺߦࠃࠆ⸃ᨆޞ ޓMWNT㧘MWNT-OH߅ࠃ߮PAA-g-MWNTߩ
ᄙጀࠞࡏࡦ࠽ࡁ࠴ࡘࡉ (MWNT)߳ߩ㜞ಽሶ㎮ߩዉ
ᣣᧄᄢ↢↥Ꮏ㒮ޓޚዊᎹ♿ሶ⧃ᴛஜⷺ↰ᵗᐘ ᣣᧄᄢ↢↥Ꮏޓޓ⮮ቁቱ㐳⼱Ꮉஜᐔ↰శ↵
Introduction of polymer chains onto multi-walled carbon nanotubes (MWNT).
Noriko OGAWA, Takeshi ASHIZAWA, Hiroyuki KAKUDA, Takayoshi FUJII, Takeshi HASEGAWA and Mitsuo HIRATA.
MWNT CH
㧞COOH
= CH =
㧗 NaOH (excess)
ψ
n
Scheme㧝 MWNT CH
㧞COONa
+= CH =
n
㧗 NaOH
MWNT CH
㧞COONa
+= CH =
㧗 HCl (excess)
ψ
n
Scheme㧞 MWNT CH
㧞COOH
= CH =
n
㧗 HCl
ࠬࡍࠢ࠻࡞ࠍ᷹ቯߒ㧘ࡊ࠭ࡑಣℂ㧘ࡊ࠭ࡑ
㊀วᔕߦࠃࠆMWNT㕙ߩᄌൻࠍ⺞ᩏߒߚ㧚
߹ߚ㧘࠽࠻࠙ࡓႮࠍ᷹ቯߒ㧘Scheme 㧝ߩ
ᔕߦ߅ߡPAA-g-MWNTߦዉߐࠇߚࠞ࡞ࡏ
ࠠࠪ࡞ၮਛߩ᳓⚛߇࠽࠻࠙ࡓߦ⟎឵ߐࠇߚߎ ߣࠍ⏕ߒߚ㧚
ޝ⚡ᄖนⷞๆశశᐲ᷹ቯޞ
ޓ ᧂ ಣ ℂ ߩ M W N T߅ ࠃ ߮ ฦ 㕙 ᡷ ⾰ ᓟ ߩ MWNT᳓ṁᶧࠍᚑߒ㧘⚡ᄖนⷞశ✢ࠍᾖ
ߒߡ㧘ㅘㆊ₸ߩ㆑߆ࠄಽᢔᕈߩ⹏ଔࠍⴕߞߚ㧚 ޓ ࡞ ߦ MWNT㧘 OH-MWNT߅ ࠃ ߮PAA-g- MWNTࠍߘࠇߙࠇ1.0 mgߕߟ⒊㊂ߒ㧘4.0 mLߩ
᳓ࠍട߃30ಽ㑆㖸ᵄಣℂࠍⴕߞߚ㧚⺞ߒߚ ฦṁᶧࠍ᷹ቯᵄ㐳650 nmߢㅘㆊ₸᷹ቯࠍⴕߞߚ ޣ⚿ᨐ߅ࠃ߮⠨ኤޤ
ޓ ࿑ 㧝 ߦMWNT㧘 MWNT-OH ߅ ࠃ ߮PAA-g- MWNTߩFT-IRࠬࡍࠢ࠻࡞ࠍ␜ߒߚ㧚MWNTߪ
ᭂሶࡕࡔࡦ࠻߇ߟࠅ߁ߎߣ߆ࠄ㧘ๆᒝ ᐲ߇᷹ⷰߐࠇߕ㧘⋥✢⁁ߩ․ᓽ⊛ߥࠬࡍࠢ࠻࡞
߇ᓧࠄࠇࠆ(࿑㧝a)㧚ߎࠇߦኻߒ㧘MWNT-OH ߩࠬࡍࠢ࠻࡞(࿑㧝b)ߦ߅ߡ3000-3500 cm
-1ߦOHિ❗ᝄേ㧘1400 cm
-1ߦC-O-Hિ❗ᝄേ㧘 1320 cm
-1ߦOH㕙ౝᄌⷺᝄേ㧘920 cm
-1ߦOH㕙 ᄖᄌⷺᝄേ߇᷹ⷰߐࠇߚߎߣ߆ࠄ㧘MWNT
㕙ߦ㉄⚛ၮߩᒻᚑ߇␜ໂߐࠇߚ㧚PAA-g- MWNTߩࠬࡍࠢ࠻࡞(࿑㧝c)ߢߪ㧘2850, 2920 cm
-1ߦൻ᳓⚛ߦ↱᧪ߔࠆિ❗ᝄേ㧘1710 cm
-1ߦC=Oિ❗ᝄേ߇᷹ⷰߐࠇߚ㧚ߎߩ⚿ᨐࠃࠅ MWNT㕙߳ߩ㜞ಽሶ㎮ߩዉ߇␜ໂߐࠇߚ㧚 ޓ࿑㧞ߦPAA-g-MWNT߅ࠃ߮࠽࠻࠙ࡓႮߩ FT-IRࠬࡍࠢ࠻࡞ࠍ␜ߒߚ(࿑㧞cd)㧚ࠬࡍࠢ࠻
࡞cߦ߅ߡ᷹ⷰߐࠇߡߚ1710 cm
-㧝ߦࠞ࡞ࡏ
ࠠࠪ࡞ၮ↱᧪ߩC=Oિ❗ᝄേߩๆ߇᷹ⷰߐࠇ ߥ߆ߞߚ㧚ߎࠇߪ㧘㉄ႮၮṢቯߩㆊ⒟ߦ߅ߡ 㜞ಽሶ㎮ਛߩࠞ࡞ࡏࠠࠪ࡞ၮ᳓⚛߇࠽࠻࠙ࡓ ߦ⟎឵ߐࠇߚߎߣ߇␜ໂߐࠇࠆ㧚
ޓ ࿑ 㧟 ߦMWNT㧘 MWNT-OH ߅ ࠃ ߮PAA-g- MWNTߩๆశశᐲߩᄌൻࠍ␜ߒߚ㧚MWNTߪ ๆశశᐲ᷹ቯߩ⚿ᨐࠃࠅ㧘߶ߣࠎߤಽᢔ⁁ᘒ߇
᷹ⷰߐࠇߥ߆ߞߚ㧚MWNT-OHߦ߅ߡߪಽᢔ
⁁ᘒ߇ᓧࠄࠇ㧘৻ቯᤨ㑆⚻ㆊᓟ㧘ๆశᐲߩᷫዋ ߇᷹ⷰߐࠇߥ߆ߞߚ㧚߹ߚ㧘PAA-g-MWNTߦ ߅ߡࠃࠅቯߒߚಽᢔ⁁ᘒ߇⏕ߐࠇ㧘৻ቯ
ᤨ㑆⚻ㆊᓟ㧘ๆశᐲߩᷫዋ߇᷹ⷰߐࠇߥ߆ߞߚ㧚 ߎߩ⚿ᨐࠃࠅ߽㉄⚛ࡊ࠭ࡑಣℂ㧘ࡊ࠭ࡑ㊀ วᔕߦࠃࠆMWNT㕙ᡷ⾰ߦࠃࠆಽᢔᕈߩ ะ߇⏕ߐࠇߚ㧚
ޣ⚿⺰ޤ
ޓ ࡊ ࠭ ࡑ ಣ ℂ 㧘 ࡊ ࠭ ࡑ ㊀ ว ᴺ ߦ ࠃ ࠅ MWNT㕙ߩᡷ⾰ࠍⴕ㧘FT-IR᷹ቯߦࠃࠅ㧘
㉄⚛ၮ߅ࠃ߮㜞ಽሶ㎮ߩዉ߇␜ໂߐࠇߚ
߹ߚ㧘㕙ᡷ⾰ᓟߩMWNTߪ᳓ਛߢቯߒߚ ಽᢔ⁁ᘒࠍ␜ߒߚ
ޣෳ⠨ᢥ₂ޤ
㧝)S. Iijima, Nature , 354 , 56(1991).
㧞)࠽ࡁࠞࡏࡦ⎇ⓥࡦ࠲✬, ޟ↥✚⎇ࠪ
࠭ ࠽ࡁࠞࡏࡦ᧚ᢱޠ ਣༀᩣᑼળ␠, 88-89, (2004).
㧟)⧃ᴛஜ㧘ዊᎹ♿ሶ㧘Ꮉ᎑ਯ㧘ⷺ↰ᵗᐘ㧘
⮮ቁቱ㧘㐳⼱Ꮉஜ㧘㤥Ỉ⨃㧘ᐔ↰శ↵㧚╙54
࿁㜞ಽሶ⸛⺰࿁੍Ⓜ㓸㧘1Pe127, 5428.
Figure 1ޓFT-IR spectra of MWNTs: (a) MWNT, (b) MWNT-OH,(c) PAA-g-MWNT.
Wavenumbers (cm-1)
Absorbance (-)
1000 1500 2000 2500 3000 3500 4000
a b c
Figure 2 FT-IR spectra of MWNTs ; (c) PAA-g-MWNT, (d) PAA-g-MWNT titrated by NaOH aqueous.
Wavenumbers (cm-1)
Absorbance (-)
1000 1500 2000 2500 3000
c d
3500 4000
Time (h)
350 300 250 200 150 100 50 0 0. 0 1. 0 2. 0
Figure 3 Changes in the absorbance at 650 nm of MWNT , MWNT-OH and PAA-g-MWNT.
: MWNT, : 100 W, MWNT-OH, : PAA-g-MWNT.
Absorbance (-)
