teflon can we do better? sachin amrute, kateryna christian, husain danish, karina demair, patrick...
TRANSCRIPT
![Page 1: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/1.jpg)
TeflonCan we do better?
Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher HollydayJoshua Israel, Allen Lin, Vrajesh Modi, Justin Petrillo, Steven Schwartz
T2 Advisors: Dr. Gloria Anderle and Dr. Michael AvaltroniAssistant: Jeremy Tang
![Page 2: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/2.jpg)
1938: Dupont Research Labs1938: Dupont Research Labs
• Dr. Roy Plunkett accidentally discovers Teflon.
• A.K.A. PTFE - Polytetrafluoroethylene
![Page 3: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/3.jpg)
Uses of Teflon
![Page 4: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/4.jpg)
Benefits of TeflonBenefits of Teflon
• Non-stick, hydrophobic (water-repellant) surface
• Efficiently, commercially manufactured
• Chemically inert• Extremely versatile; can be used
in numerous applications
![Page 5: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/5.jpg)
Problems with TeflonProblems with Teflon
• Only forms physical bonds
• Wears away over time
• Is a Carcinogen
![Page 6: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/6.jpg)
Our Alternative: ODPAOur Alternative: ODPA
• Chemically bonded• Stays on indefinitely• Environmentally friendly (non-
carcinogenic)
•Self-assembled monolayer (SAM)
![Page 7: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/7.jpg)
Octadecylphosphonic Octadecylphosphonic AcidAcid
Hydrophobic End
Bonding End• ODPA is an
excellent substitute for Teflon
• Has all of benefits and none of the drawbacks.
![Page 8: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/8.jpg)
Our GoalOur Goal
•Develop a viable Teflon substitute (ODPA)
•Improve efficiency of application of ODPA to an oxide surface
![Page 9: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/9.jpg)
Physical vs. Chemical Bonding
• Physical bond:– Electrostatic attraction to surface– Can be removed
• Chemical bond: – Actual covalent bond to surface– Cannot be removed
![Page 10: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/10.jpg)
Bonding of ODPA to Oxide Surface
OH
Glass
OH
Glass
P
HO OH
O
P
HO OH
O
R R
n n
O OO O
Glass
PO
PO
R R
n n
120 °C
18 hours
PHO
HOO
Rn
OO
O
OHO
![Page 11: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/11.jpg)
What is Contact Angle?What is Contact Angle?Highly
Hydrophilic:
Highly Hydrophobic:
Our goalOur goal
![Page 12: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/12.jpg)
Measuring Contact Angle
Large contact angle we observedContact Angle Goniometer
http
://w
ww
.ram
ehar
t.com
/gon
iom
eter
s/
![Page 13: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/13.jpg)
“The GoldGold Standard”
• T-BAG (Tethering by Aggregation and Growth)– Substrate immersed in ODPA
solution– Evaporate for 24 hrs
• Oven for dehydration– 48 hrs at 120 degrees C
• What’s the problem? It takes too long
![Page 14: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/14.jpg)
Alternate Coating Methods
ww
w.u
sasc
ient
ific
.com
msr
o.co
m
ww
w.s
peci
alch
em4a
dhes
ives
.com
ww
w.g
alla
dech
em
.com
Spray
PipetMayer Rod
Drain
![Page 15: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/15.jpg)
Acid Pre-TreatmentAcid Pre-Treatment• Hypothesized that it might
corrode the surface• Increases number of ODPA
bonding sites
www.elmhurst.edu
![Page 16: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/16.jpg)
Dehydration MethodsDehydration Methods
ww
w.a
ndro
v-m
edic
al.c
om
ww
w.s
ks-b
ottl
e.co
m
http
://w
ww
.ogo
rman
s.co
.uk
Microwave Infrared Ultraviolet
Heat GunIron
![Page 17: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/17.jpg)
Contact Angle vs. Dehydrating Methods: Drain (15 min)
0.0
20.0
40.0
60.0
80.0
100.0
120.0
IR – 10 min IR – 20 min UV – 20 min Heat gun – 10min
Heat gun – 20min
Iron – 5 min
Dehydrating Method
Co
nta
ct A
ng
leOur Results Say…
![Page 18: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/18.jpg)
Average Contact Angle: Mayer Rod
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
Oven IR (IR)2x Heatgun
Dehydration Method
Co
nta
ct A
ng
le
Untreated
Acid
Ethanol
![Page 19: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/19.jpg)
Inconsistency of Coating Before and After Soaking
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
(IR – 10 min)2x (IR – 10 min)2x Ethanol, (IR – 10 min)2x
Dehydration Method
Sta
nd
ard
De
via
tio
n
Before
After
![Page 20: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/20.jpg)
Discussion/Conclusions
• Application method– Drain, Drop, Mayer Rod
• Chemical bonding method – Iron• Pre-treatments inconsistent• Multiple repetitions good• Sample size and consistency
![Page 21: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/21.jpg)
• Continue work with ODPA to coat glass, plastics, and metals (e.g. Ti replacements)
• Try fluoronating the phosphonic acid
• Used VMD (Visual Molecular Dynamics) to simulate SAMs
What’s in Store for the Future?
![Page 22: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/22.jpg)
Our results offered potential promise as an industrially plausible replacement for
Teflon, with low toxicity and high hydrophobicity.
The Bottom Line…The Bottom Line…
![Page 23: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/23.jpg)
Works Cited• www.fibraplex.com • profile.myspace.com • www.discountedwheelwarehouse.
com • www.runnertime.com • www.labconco.com • www.senorcafe.com • shop.pcgenerations.com • www.sofia.usra.edu • www.natequipment.com • www.burningmonk.com • www.thesavvytraveller.com • www.smecc.org • www.enlightenedgifts.org • www.laboratory-supply.com • profile.myspace.com• capecodtravel.com • www.zeolite.ca • www.nationalgeographic.com • www.elizabethan-era.org.uk • www.easyseo.com • www.csiministorage.com • profile.myspace.com • www.wallpaperbase.com
• www.nottinghillhousing.org.uk • www.env.gov.bc.ca • www.wirelessedge.co.uk
![Page 24: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/24.jpg)
We’d like to thank…
NJGSS
Dr. David Miyamoto
Dr. Paul Quinn
Dr. Michael Avaltroni
Dr. Gloria Anderle
Mr. and Mrs. John Overdeck
![Page 25: Teflon Can we do better? Sachin Amrute, Kateryna Christian, Husain Danish, Karina DeMair, Patrick Gorman, Christopher Hollyday Joshua Israel, Allen Lin,](https://reader033.vdocument.in/reader033/viewer/2022051622/5697bffa1a28abf838cc043f/html5/thumbnails/25.jpg)
Jeremy
TangAnd who can forget..