PMPS particles.ppt - Ocean Tomo Bid-Ask · 3urgxfwlrq phwkrgrorj\ /dqjpxlu 3036 sduwlfohv +roorz...

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29/10/2019 1 Production methodology Langmuir (2005) 21, 6572 - 6575 PMPS particles Hollow silica shells Core shell products Poly(1-methylpyrrol-2-ylsquaraine) PMPS particles

Transcript of PMPS particles.ppt - Ocean Tomo Bid-Ask · 3urgxfwlrq phwkrgrorj\ /dqjpxlu 3036 sduwlfohv +roorz...

Page 1: PMPS particles.ppt - Ocean Tomo Bid-Ask · 3urgxfwlrq phwkrgrorj\ /dqjpxlu 3036 sduwlfohv +roorz vlolfd vkhoov &ruh vkhoo surgxfwv 3ro\ phwk\os\uuro \ovtxdudlqh 3036 sduwlfohv

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Production methodology

Langmuir (2005) 21, 6572 - 6575

PMPS particlesHollow silica shells

Core shell products

Poly(1-methylpyrrol-2-ylsquaraine)

PMPS particles

Page 2: PMPS particles.ppt - Ocean Tomo Bid-Ask · 3urgxfwlrq phwkrgrorj\ /dqjpxlu 3036 sduwlfohv +roorz vlolfd vkhoov &ruh vkhoo surgxfwv 3ro\ phwk\os\uuro \ovtxdudlqh 3036 sduwlfohv

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PMPS particle parameters

• particle size: 1.3 – 2 μm diameter

• few beads with diameters up to 4 μm

• thermally stable up to 280ºC

• mean nominal stress at rupture: 493 113 MPa

• mean deformation at rupture: + 65% initial diameter

• polymer additives / functional fillers

• storage and slow release

• separation / filtration media

0102030405060708090100

0 100 200 300 400 500 600 700

Temperature ( oC)

Weigh

tLoss(%

)

440 Co

300 Co

30 mins

10 C / mino

TGA data

Page 3: PMPS particles.ppt - Ocean Tomo Bid-Ask · 3urgxfwlrq phwkrgrorj\ /dqjpxlu 3036 sduwlfohv +roorz vlolfd vkhoov &ruh vkhoo surgxfwv 3ro\ phwk\os\uuro \ovtxdudlqh 3036 sduwlfohv

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Absorbent sponges

Plastics additives

Porosity

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Porosity

Uranium

Uranium

Chlorine

Porosity

Chlorine – light blue

Uranium - red

Page 5: PMPS particles.ppt - Ocean Tomo Bid-Ask · 3urgxfwlrq phwkrgrorj\ /dqjpxlu 3036 sduwlfohv +roorz vlolfd vkhoov &ruh vkhoo surgxfwv 3ro\ phwk\os\uuro \ovtxdudlqh 3036 sduwlfohv

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Hollow silica shells

Silica shell parameters

• particle size: 650 nm – 1.0 μm diameter

• wall thickness ≥10% diameter

• aggregated

• mean nominal stress at rupture: 438 47 MPa

• mean deformation at rupture:+ 53% initial diameter

• BET SSA > 370 m2/g30 60 90

Degrees 2

XRD pattern

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Silica shell parameters

Encapsulated metals - Mn+@SiO2

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Encapsulated dyes and pigments

Organic dyes@SiO2 YVO4-Eu2%@SiO2

Principal applications

• Storage and controlled release media

• Slow release media

• Encapsulated optical media (i.e. dyes, pigments etc.)

• Encapsulated fragrances and flavours

• Encapsulated UV absorbents

• Polymer additives / Functional fillers

• Biological / catalysis support media

• Separation / filtration media