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Mahendra R. Nevare

M. Sc.

Under Supervision of

Dr. Vikas V. Gite

Assistant Professor

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Introduction To Nanocomposites

Nanofillers

Synthesis Method of Nanocomposites

Advantages of Nanocomposites

Synthesis of Nano Zinc Phosphate

Preparation of PP/LDH/Zinc PhosphateNanocomposites

CharacterizationResults and Discussion

Conclusion

ReferencesMahendra Nevare, School of Chemical Sciences, Pre-Ph. D. Coarse Work

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A composite is a heterogeneous substance consisting of

two or more materials which does not lose thecharacteristics of each component.

This combination of materials brings about new

desirable properties.

A Nanocomposites is composite material which iscombination of two or more phases containing different

composition or structures where atleast one of the phase

is in nanoscale.

Two Phases- Continuous Phase/Matrix

Discontinuous Phase/Reinforcement

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Matrix Phase:

-- The continuous phase

-- Purpose is to:

- transfer stress to other phases

- protect phases from environment

Dispersed Phase:

-- Discontinuous Phase

--Purpose: enhance matrix properties-- Classification: Particle, fiber, structural

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Nanofillers are the materials having atleast one

dimension in the nanometer range

Greater surface area/weight,

Types: 1D 2D 3D-

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Popular Nano-Reinforcment

Carbon Nanotube Graphite POSS

Cellulose Clay

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Solution Dispersion:-

Polymer- SolubleFiller- Swellable

In-situ Polymerization:-

Monomer- PolymerizedFiller- SwellInitiate by free radical/heat

Melt Intercalation:-Polymer MeltFiller disperse in molten state

Mahendra Nevare, School of Chemical Sciences, Pre-Ph. D. Coarse Work

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Dramatic improvement in mechanical properties

Greater thermal stability

Excellent fire retardancy

Relatively better biodegradable

Good scratch resistance

Improvement in barrier properties

Very good transparency


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9/25Mahendra Nevare, School of Chemical Sciences, Pre-Ph. D. Coarse Work

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30 mL 0.1 M Zn(NO3

)2

20 mL 0.1 M NaPO4

0.3 mLethoxylate

0.2 mLethoxylate

100 mlde-ionized

water


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Prepared by melt compounding using Brabender

Plastograph EC, Germany

Polymer was melted and homogeneously mixed with

0-3 phr filler (LDH and nano zinc phosphate)

loading. The processing temperature was 190C for melt

compounding. Rotor speed and blending time were

kept at 60 rpm and 10 minutes respectively


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SampleNo. PP (phr) LDH(phr) nano zincphosphate

(phr)1

100

-

-

2 100 0 33 100 1 24 100 1.5 1.55 100 2 16 100 3 0


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Lumps are grinded in the Pellet form

Injection molded at temp 190 0C

Injection time 5 Sec.

Cooling time 10 Sec.


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SEM- Hitachi

TGA- Perkin Elmer

UTM- International Equipemnt

Impact Tester- International Equipemnt

Hardness Tester-

UL-94

Characterization


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Size and Shape of Nano Zinc Phosphate

Analyzed by SEM

Rod shape morphology

Dimension in the range of 25-100 nm


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1 2 3 4 5 6

50

51

52

53

54

55

56

57

58

59

60

Had

Sample No.

Hardness


Sample No. Hardness

1 53

2 58

3 574 58

5 58

6 59

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1 2 3 4 5 60.00.51.01.52.02.53.03.54.0

Kgcm

2

Sample No.

Tensile Strength


Sample No. Tensile Strength

(Kg/cm2)

1 3.11

2 3.933 3.76

4 3.71

5 3.80

6 3.88

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1 2 3 4 5 6

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

KJm2

Sample No.

Impact Strength


Sample No. Impact

Strength

(KJ/m2)

1 2.63

2 3.293 2.85

4 2.73

5 2.94

6 3.18

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1 2 3 4 5 6

0

10

20

30

40

50

mm/min

Sample No.

Flammability


Sample No. Flammability

(mm/min)

1 50.85

2 25.263 26.78

4 29.12

5 28.30

6 27.02

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0 100 200 300 400 500 600 700 800-20

0

20

40

60

80

100

%wo

Temperature

sample 1

Sample 2

Sample 3

Sample 4

Sample 6

Sample No. % wt loss

1 97.95

2 95.21

3 93.48

4 93.20

6 94.03

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a) 3 phr LDH laodingb) 3 phr nano ZnPO4 loading

c) 1.5 phr LDH and 1.5 phr ZnPO4 loading


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Synthesized nano zinc phosphate PP/LDH/nano zinc phosphate prepared by melt

compounding

Synergetic effect observed in LDH and nZP

Synergism result in improvement in performance of

composites


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References:-

1. C. Patil, U. Kapadi, D. Hundiwale, P. Mahulikar, J

Mater Sci (2009)44:31183124.2. L. Wang, X. He, H. Lu, J. Feng, X. Xie, S. Su, C.Wilkie,

Polym Adv Technol (2011), 22 11311138.

3. A. Ahamad, A. Chaudhari, C. Patil, P. Mahulikar, D.

Hundiwale, V. Gite, PPTE(2012), 51: 786790.

4. J. Wang, D. Li, J. Liu, X. Yang, J. He, Soft Nanoscience

Letters, (2011), 1, 81-85.


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KNAHO U

Cell No: 07620808700

E-mail:[email protected]

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