characterization of irrdaiation of ethylene vinyl … 01/it2 chantara... · homes & breeding...
TRANSCRIPT
Overview
Introduction
Radiation Processing
RD Products in Malaysian
Nuclear
Agency
Recycling of Rubber
Conclusions
Blending
Compatibilization
Electron beam irradiation
NICSTAR 2018,
5-7 March 2018, Mumbai, India
Radiation Processing
• Radiation Sterilization
• Radiation Crosslinking
• Radiation Grafting
• Radiation Degradation
Irradiation Facility at Nuclear Malaysia
Electron Beam
Accelerator
Commercial Gamma
Radiation Facility
Electron Beam
Radiation
Facility
Gamma
Radiation
Vulcanization
of Rubber
Latex Curetron
UV line
R&D PRODUCTS & PROCESS
2015 2010 2007 2004 2000 1998 1990
RVNRL
Radiation
formation of micro
and nanoparticles
of natural
polymers
Oligochitosan
Plant Growth
Promoter
ENR-Si nano
hybrid
Agrofibers
polymer
composites
NR-
Nanomagnetic
particle
composites
NR-
Thermoplastic
Nanoclay
composites
Excellent Clarity/Transparency
Biodegradable Films
Recycling NR
waste
Radiation X-
linking of wire
and cable
insulator
Radiation curing
of nano
composite coating
Radiation
processing of
NR-PP, NR-PE
blends, etc
Radiation
Grafting of
Membrane
Radiation X-
linking of
nanoclay EVA-
NR, PP, ect
Palm oil acrylate
UV curable Over
Print Varnishes
(OPV)
Pressure
Sensitive
Adhesive (PSA)
Radiation
curing of
surface coating
on cemboard
and parquet
Production of
functionalization
Carbon Nano
Tube
Radiation for
wastewater
treatment
Grafting
material for
environment
application
Hyper-branced
palm oil
acrylate
Micro-and
Nano-
gel/particles
from Radiation
Cross-linkable
Palm Oil
Radiation Processing
Rad.
processing of
sago hydrogel
Sago biofilm
/biofoam
Radiation
processing of
ENR-PVC
blend
PVC radiation
compatible
tubing
UV curable hard
amour panel
(Ballistic
application
Radiation curing
of coatings of
woods,
cemboards,
Radiation
processing heat
shrinkable
materials
Radiation
processing of
PE, HDPE,
LDPE, EVA,
PVC
Radiation
processing of
chitosan and
chitosan
derivatives
Hybrid nano
composite -
river protex and
aquacage
electrospun
PVC/natural
rubber nano
fibre
Natural Rubber Latex (RVNRL) Finger Coat
Pilot Plant Production of Palm Oil Acrylate Resin
and Overprint Varnish (OPV) from Oil Palm
Production of coating
material resin from oil
palm
EB Processing: Crosslinking and
Sterilization
Passing through electron beam at 25KGy.
Product Irradiated For Crosslinking To Form Hydrogel And At The Same Time Sterilized
Hydrogel
FACIAL MASK
A pilot scale production of radiation processed oligochitosan
12
Mixing Collection
Oligochitosan as
Plant Growth Promoter
12 days after
transplant
Treated with
commercial products
Treated with
oligochitosan
10cm 13cm
Commercial Oligochitosan
Enhance root growth
EB crosslinking of wires and cables
Radiation crooslinkable TPE COMPOUNDS
Product extrusion
process Weather
strips
Electron beam
Irradiation
Compounding process
TPE waste
rubber compound
Weather strip
door
Weather strip
hood
Weather strip
trunk lid
Quarter window
Glass run
channel
Edge
protector
Tailgate glass windshield Body side
molding
MOSTI Special Fund SFKHAS03-01-005 (2015-2016)
Radiation Compatible Thermoplastic Elastomers
(TPEs) for HealthCare Industry
Malaysian Patent Filing PI 2015702539 ( 3rd Aug 2015) Novelty
Injection Moulding-
Collaborator
Compounding- Collaborator
Compound in
granule form
Finished Products
20
7 July 2018 21
TPE Compounds/Injection Molded Products
Radiation Processing of
Natural Polymer &
Nanomaterials 2010 – 2020
IAEA Collaborating Centre
Radiation Processing of Natural
Polymer 2006 – 2009
IAEA TC
• IAEA/TC MAL 8022- Establishing a Laboratory
for the Application of Radiation in
Nanotechnology, 2009 – 2011
• IAEA/TC MAL/1010 - Development of green
materials and processes using ionizing radiation
and nanomaterials for environmental
remediation 2012 -2014
• IAEA/TC MAL/1015-Radiation Processing of
Waste Polymeric Materials 2016-2017
Overall objective To develop value added waste polymers for industrial
applications in support with National Solid Waste
Management objectives and National Green Technology
Policy
Create new applications for recycle waste polymers which
have great advantages to the economic and environmental.
Hard to dispose
homes & breeding
grounds for
disease-spreading
vectors.
Danger of self-
sustaining
fires that cause
air and water
pollution
Scarp polymers
increasing every
year
OV
ER
CO
ME
Nitrile Butadiene Rubber(NBR)
NBR is a synthetic rubber copolymer of acrylonitrile and butadiene.
Its general properties are:-
• More resilient than natural rubber
• Resistant to oil and fuel
• Lower flexibility and strength than that of natural rubber
NBR are generally used for:-
• Protective gloves
• Adhesives
• Footwear
• Fuel and oil hoses
Ethylene Vinyl acetate (EVA
EVA is a copolymer of ethylene and vinyl acetate.
excellent ozone resistance
weather resistance
mechanical properties
halogen-free
Specific Objectives
• To study the effect electron beam irradiation on the properties of EVA/r-NBR blends.
• To study effect of radiation sensitisers and compatibilisers on the compatibility of 50/50 EVA/r-NBR blends upon Electron Beam Irradiation.
Methodology
EVA Reclaimed Rubber
Internal mixer
Compression molding
Testing
Electron beam irradiation
Compatibilizers APS, LR, MAEVA
Radiation sensitizers
TMPTA, TPGDA, HVA2
RESULTS AND DISCUSSION
Tensile strength
0
5
10
15
20
25
30
35
40
0 50 100 150 200 250
Te
nsil
e S
tren
gth
(M
Pa
)
Dose(kGy)
Fig 1: Effect of irradiation on the Ts of r-NBR/EVA blends
0%r-NBR
10% r-NBR
20%r-NBR
30%r-NBR
40%r-NBR
50%r-NBR
60%r-NBR
Gel fraction
0
10
20
30
40
50
60
70
80
90
100
0 50 100 150 200 250
Ge
l C
on
ten
t(%
)
Dose(kGy)
Fig 2: Effect of irradiation on the gel fraction of r-NBR/EVA blends
0% r-NBR 10% r-NBR
20%r-NBR 30% r-NBR
40% r-NBR 50% r-NBR
60% r-NBR
Tensile strength
Fig 4 : Effect of additives on the Ts of 50/50 r-
NBR/EVA blends
4
5
6
7
8
9
10
0 20 40 60 80 100 120 140 160 180 200
Ten
sile
str
en
gth
(M
Pa)
Radiation dose (kGy)
NIL
5APS
TMPTA
TPGDA
HVA2
Gel fraction
Fig 6: Effect of additives on the gel fraction of 50/50 r-NBR/EVA
blends
0
10
20
30
40
50
60
70
80
90
0 50 100 150 200 250
Ge
l co
nte
nt
(%)
Radiation dose (kGy)
Control
5APS
TMPTA
TPGDA
HVA2
EVA/r-NBR blends
EVA/r-NBR
SEM micrographs-APS
Figure 9 : Effect of APS on the fractured surface of
EVA/rNBR blends
voids
(3-Aminopropyl)triethoxy silane (APTES)
40%r-NBR
100% EVA
Tg r-NBR
Tg of EVA
Figure 12 : Effect of r-NBR on the Tan delta curves of EVA.
TAN CURVES OF EVA/r-NBR BLENDS
3.29°C
2.62°C
2.55°C
0.0
0.1
0.2
0.3
0.4
Ta
n D
elta
-100 -80 -60 -40 -20 0 20 40
Temperature (°C)
50-50 EVA-NBR 0KGy––––––– 50-50 EVA-NBR-APS 0KGy––––––– 50-50 EVA-NBR-DCP 0KGy–––––––
Universal V4.5A TA Instruments
Tg of EVA
Tg of r-NBR
Figure 13 : Effect of APS and DCP on the Tan delta curves of
50/50 EVA/rNBR blends
TAN CURVES OF EVA/r-NBR BLENDS (0kGy)
5.11°C
3.71°C
3.21°C
0.0
0.1
0.2
0.3
0.4
Tan
Del
ta
-100 -80 -60 -40 -20 0 20 40
Temperature (°C)
50-50 EVA-NBR 100KGy––––––– 50-50 EVA-NBR-APS 100KGy––––––– 50-50 EVA-NBR-DCP 100KGy–––––––
Universal V4.5A TA Instruments
Tg of EVA
Tg of r-NBR
Figure 14 : Effect of irradiation on the Tan delta curves of 50/50
EVA/rNBR in the presence of APS and DCP.
TAN CURVES OF EVA/r-NBR BLENDS (100kGy)
(1) EVA – EVA crosslinking
E → E• (EVA radical)
E• + E• → E – E (EVA self-crosslinking)
(2) rNBR – rNBR crosslinking
R → R• (rNBR radical)
R• + R• → R – R (rNBR self-crosslinking)
(3) EVA – rNBR crosslinking
E• + R• → E – R (EVA – rNBR crosslinking)
CONCLUSIONS
Addition of r-NBR to EVA decreases the mechanical
properties of the EVA/r-NBR blends
Additivity effect of the r-NBR
Poor compatibility of the EVA/r-NBR blend obtained
Electron Beam irradiation improves the Mechanical properties
of the EVA/r-NBR due to irradiation-induced crosslinking of the
EVA.
Additives used in this study improve the compatibility of the
blend.
ACKNOWLEDGEMENTS
• Ministry of Education (MOE),
Malaysia, for Granting this work
under FRGS
(FRGS/2/2014/TK04/MOSTI/02/1
• Radiation Processing of Waste
Polymeric Materials 2016-2017
THANK YOU