Graphene Fibre

7/21/2019 Graphene Fibre

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Graphene Fiber Unique Material with Unique Prope

201



Intoduction

• "Graphene" is a combination of graphite and the su! ene#

%anns&eter 'oehm(

• ) 2* mono+a$er of carbon atoms pac,ed into a hone$comb +

• The credit of Graphene in-ention goes to )ndre Geim a/o-ose+o- at The ni-ersit$ of anchester e!tracted sing+ecr$sta++ites from bu+, graphite(



ontd((

This materia+ gains immense recognition because of its fas

properties:

• %igh e+ectron mobi+it$1#2 high therma+ conducti-it$

• 3!traordinar$ e+asticit$ and stiness

• Strength 00 times that of stee+

• %igh+$ corrosion resistance

• Sca+ab+e



Graphite



• ain constituent of graphene is carbon

• )nd its e!tracted from Graphite

• 1mm of Graphite 6 i++ion +a$ers of Graphene

• arbon atom in Graphene are distributed in %one$ oformation



*ierent ethods of e!traction has been suggested for e!traGraphene from Graphite

• hemica+ *eposition ethod

• 3!fo+iation of mined graphite to produce a,es

• Thermoengineering method

• Graphite o!ide reduction



Graphene sing+e+a$er T3

Graphene mu+t+a$er T3

Source )S materia+s website9&roduct speci:cation;



Graphene o!ide S3 '$ )S<educed Graphene o!ide S3

Graphenea



)/=)T<>/G ?= G<)&%3/3=>'3<

• @et spinning

• hemica+ -apor deposition

• =rom a+igned /T sheets to graphene $arns



@3T S&>//>/G ethod 1

Graphene o!idedispersion

G+ass s$ringe

&ressure61(5&a

%e+d b$ /2

3!trusionoagu+ation

/a?%Aethano+

Ta,e up @ashing withethano+

These Gcon-ered:bre b$ with %$d80Cc for

washing



S3 of chemica++$ reduced:ber

G? :ber bound n a Teondrum

S3 of G? :ber



3T%?* 24

>n this method the procedure is same as the pre-iouse!pect

oncentration of G? used is 10mgAm+

oagu+ation bath of he!adec$+trimeth$+ammonium bromide 9T)'; at 0(5mgAm+

@et spinning of G? :ber withdoub+e Det pump



. , . , . , .



3==3T ?= /?ZZE3 S>Z3 )/* ?/3/T<)?/ =>'<3 *>)3T3<

a b c d

=iber dia for dierent noFF+e siFes 9a; 0(11 9b;

0(29c; 0(41 and 9d; 0( mm

a

c

=iber dia for dierent concentrst

10 and 9d; 22 mgA



?*>=>3* @3T S&>//>/G5"G

Graphene o!ide

ethano+

ethan

o+



/3.E)3E>.3 G<)&%3/3 ?H>*3 %=

The inner capi++ar$ of the spinneret is pumped with air

the .+Amethano+ so+ution(

)t a set ow rate of 1# 1(5# and 2 mEAmin

nG%=s were obtained b$ therma+ or chemica+ reductio

%=s





%o++ow G? :bre

Sing+e microsphere of the nG?%=

'



%3>)E I)&?< *3&?S>T>?/ 3T%?*

)rA%2Aethan

e

400A100A0m+Amin

Graphene depositedo-er copper foi+

3tching of grb$ 0(5 =

<insing graphene :deioniFed w

9oats

=i+m in ethano+so+ution

9starts sin,ing;

*raw out Graphene:bre with the he+p

of tweeFers

)t 1000Ccfor 5 min



=+oatingGraphene :+m

in water

Sin,ingGraphene :+m

in ethano+

Graphene :ber

drawn out

T

G



3%)/>)E &<?&3<T>3S ?= G<)&%3/3 =

FibreTensile

strength

Graphene?!ide

145&a

Graphene 182&a



)&&E>)T>?/S

• Graphene :bre ha-e fo++owing

uniJue properties +i,e te!ti+e

• echanica+ e!ibi+it$

• Eight weight

• 3as$ to functiona+iFe



G= actuators

•

3!ce++ent humidit$ responsi-e bendingAunbendinabi+it$





*$esensitiFed photo-o+taic wire prepared b$using a grapheneA&t composite :ber as thecounter e+ectrode

G= ')S3* S&3< )&)>T?<



G= ')S3* S&3< )&)>T?<

• >t is used ine+ectrochemica+

capacitor(• %igh surface area andhigh e+ectroconducti-it$

crosssectiona+ -iew of a G=L*G shographene :ber 9G=; surrounded b$ stasheets( Sca+e bars 100mm(



S?E>* &%)S3 ><? 3HT<)T>?/ S?<

•&resent+$ a-ai+ab+e materia+s ha-e some

drawbac, +i,e

• %igh cost#

• Therma+# mechanica+ andAor chemica+

instabi+it$

• >nsucient se+ecti-it$

• =ragi+it$ of the fusedsi+ica substrate# and

• Eimited range of po+arit$ and reuse times

Graphene o$ers folload%antages

• %igh ecienc$

• Superior therma+ and mec

stabi+it$

• 3!ce++ent durabi+it$ 9M10



T&'() Y*U

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Graphene Fibre