Integrating Nanomaterial Applications in the Field of ... · Integrating Nanomaterial Applications...
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Integrating Nanomaterial Applications in the field of Sustainable Biomaterials
Professor and Head, Barry Goodell1
Professor Kevin Edgar1,2
Professor Chip Frazier1
Asst. Prof. Pr. Young-Teck Kim1
Program Manager, Matthew Hull2
Assoc. Prof. Scott Renneckar1,2
Assoc. Prof. Maren Roman1,2
Professor Jaime Camilio3
1Department of Sustainable Biomaterials, 2Institute for Critical Technologies and Applied Science, 3Center for Innovation-based Manufacturing. Virginia Tech. Blacksburg, VA.
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Where do we see the Challenges and Opportunities for Sustainable Nanomaterial
Applications into the Future?
AMO Objectives – Focus Areas • Nanocomposites using Cellulose and Lignocellulose Nanomaterials
– Structural panels and composite structures
• Photonics and Electronics
– Smart materials, smart packaging, printed electronics
– Energy storage devices
• Health and Personal Care
– Artificial body parts, tissue scaffolds, targeted drug delivery
• Improved Strength to Weight Performance of Paper and Board
– Strength enhancement in paper, paperboard, and wood building products
• Understanding the Control of Water-Lignocellulosic Interaction for Modification of Properties
Barrier packaging – nanocoatings on paper and plastic webs for vapor barrier
Premise: Our Current Research defines where we all believe the future lies. Reviewers for funding agencies that support the research also of course believe in the same future. Question:
These are Critical Areas of Research Focus: But are they what the Public considers as “Forest Products” and should they be categorized as such?
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AMO Focus Area I Nanocomposites using Cellulose and Lignocellulose Nanomaterials:
Structural Panels and Composite Structures (S. Renneckar, C. Frazier and the NSF I/UCRC WBC)
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CNT & Graphitic carbon from biomass for reinforcement of Polymer Matrix Composites in Structural Applications
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Size, Structure, and Biomimetic Materials of nanocellulose for applications in composites: Renneckar Group
Li, Q. and S. Renneckar (2009). "Molecularly thin
nanoparticles from cellulose: isolation of sub-
microfibrillar structures." Cellulose 16(6): 1025-1032.
Li, Q. and S. Renneckar (2009). “Supramolecular
structure characterization of molecularly thin
cellulose 1 nanoparticles." Biomacromolecules
12:650-659
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Enzyme catalyzed nanocellulose-phenol composite
Layer-by-layer assembled “cell wall” of lignin and nanocellulose
Li, Z., S. Renneckar, and J. Barone. 2010. Nanocomposites prepared by in-situ enzymatic
polymerization of phenol with TEMPO-oxidized nanocellulose. Cellulose 17(1):57-68
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High-value Hybrid Nanocomposites: Renneckar Group
Wet-spun carbon- nanocellulose fibers
Conductive textiles Tissue engineering scaffolds
Hydroxyapatite - electrospun cellulose fibers
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AMO Focus Area II Photonics and Electronics: Smart materials, Smart packaging,
Printed electronics; Energy Storage Devices (M. Roman, Y. T. Kim, , S. Renneckar, B. Goodell )
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• Tissue cultures of human skin grown on chips permits monitoring (chemiluminescence) of nano-particles from TiO2 to antimicrobial compounds through skin.
• APPLICATIONS: Dynamic detection of nanomaterials used in cosmetics, food, and other life science industries.
“SKIN-on-a-CHIP technology” pat. pend.
Y-T Kim Research
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Engineering carbon electrodes from lignocellulosic materials Highly ordered mesoporous and nanoporous carbon in experimental super-capacitors
3mm
Cellulose
Microfibril Lignin
hemicellulose
matrix
Super-Capacitors produced from biomass carbon
Nanoporous
carbon
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Nanocarbon – Nanocellulose Hybrid Composites for Energy Storage: Renneckar Group
Flexible carbon-nanocellulose films
Electrodes for Li Batteries
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AMO Focus Area III Health and Personal Care: Artificial body parts,
tissue scaffolds, targeted drug delivery ( K. Edgar, M. Roman, S. Renneckar)
Chitosan
Cellulose
nanocrystal
Drug
1 μm
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“Dissolving bricks”; polysaccharides in drug delivery:
o Poorly soluble in bloodstream
o Wastes money, drugs get into wastewater (resistant organisms), harms patients
o Enhancing drug solubility (novel cellulose esters including CAAdP with colleagues at Purdue) by making nanodispersions of drug in polymer.
o Further improvement if we make nanodispersion particles < 250 nm diameter
CAAdP
matrix
Drug
domains
(near molecular
size)
CO2H
CO2H
CO2H
CO2H
CO2H CO2H
HO2C
HO2C
HO2C
CO2H
CO2H
edgarresearch.org Renewable Biomaterials and Human Health
Delivering the undeliverable; cells, proteins: o Developed first-ever solvents for alginate (from renewable seaweed)
o Solvents help us make new alginate derivatives that make great nanogels for delivery of cells and other delicate things
o Artificial pancreas for diabetics, protein drugs for cancer; protection from immune system and effective delivery
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1. Targeted Intracellular Drug Delivery
2. Oral Drug Delivery
Maren Roman
Untargeted
Targeted
Cellular Uptake of Cellulose
Nanocrystals Pristine Labeled
Chitosan
Cellulose
nanocrystal
Drug Using caffeine
as a model
drug
Cellulose Nanocrystal Mediated Bioimaging and Drug Delivery
1 μm
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o Regioselective substitution of polysaccharides on nanometer and subnanometer scale is VERY difficult due to their poor solubility, low OH reactivity (H-bonding, steric hindrance).
o Polysaccharide derivatives are very important economically (e.g. flat screen displays, drug delivery, selective permeability), end their properties depend heavily on regioselectivity
o Edgar lab is making good progress against this problem; first ever synthesis of 2,6-diesters,, 2,6-A-3-B-triesters, new process to make 6-monoesters and 23-A-6-B-triesters in 1-2 steps with no need for protecting groups.
Novel, functional nanomaterials from renewable feedstocks: Regioselective synthesis of cellulose ethers and esters edgarresearch.org
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1. Cellulose Nanocomposites for Bone Scaffolds
2. Inkjet Printed Micropatterns for Biological Assays
Cellulose Nanocrystal Applications in Medical Devices
Maren Roman 1 μm
Polycaprolactone (PCL)
Nanoreinforcement
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AMO Focus Area IV Improved Strength to Weight Performance of Paper and Board:
Strength Enhancement in Paper, Paperboard, and Wood Building Products
(Y. T. Kim, C. Frazier, S. Renneckar)
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Move this distribution into the nano-range
Organic fillers in phenolic adhesives: • Benefits? • Can they be effectively dispersed? • Industrial cost effectiveness?
Alder Bark Filler
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• Adhesion & renewable adhesives • Formaldehyde generation in, and emission from, wood. • Rheology of switchgrass and wood. • Novel analytical methods towards nanoscale morphological models
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2H NMR Quadrupolar interactions reveal matrix anisotropy
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Solvent-submersion DMA of switchgrass
U.S. DOE Genomic Science genomicscience.energy.go
v.
Materials science of lignocellulose: Frazier Research Group
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AMO Focus Area V Understanding the Control of Water-Lignocellulosic Interaction
for Modification of Properties: Barrier Packaging – Nanocoatings on Paper and Plastic Webs for Vapor Barriers
(Y. T. Kim, S. Renneckar)
PLA
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Sustainable Packaging: Barrier technologies and Inclusion technologies
• Bioplastics with included nanomaterials
• APPLICATIONS: Overcoming major drawbacks of existing bioplastics:
–Thermal stability to Industry standards
–Enhanced Gas Barrier Properties
–Miscibility with many polymers
Examples technologies for enhanced Thermal Stability
ß-cyclodextrin & PLA (cyclic oligosaccharide)
• High melting temperature (~ 290oC)
• Hydrophilic exterior w/ hydrophobic central cavity
• Low miscibility with PLA, but permits the insertion of
PLA (or other guest molecules) to provide a nonpolar-
nonpolar inclusion-association
PLA
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PLA
Cotton
Hydrophobic Nano-clay
Turmeric
Jojoba Oil
PET
PLA
Gas Barrier Systems in Bioplastics: Y.T.Kim
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Nanocellulose Vapor Barriers and wettability modification: Renneckar Group
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Global Economic Impact of ALL nanomaterials: Global Market Forecast = $2.5 Trillion by 2014 Shapira and Youtie 2012. THE ECONOMIC CONTRIBUTIONS OF NANOTECHNOLOGY TO GREEN AND SUSTAINABLE GROWTH (Lux Research’s 2009)
Shapira and Youtie. 2012. International Symposium on Assessing the Economic Impact of Nanotechnology, Organisation for Economic Cooperation and Development and the US National Nanotechnology Initiative
The Impact of Sustainable Nano- materials in Select “Green” Industries???: Less than $25 Billion currently.
“ “
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Life Cycle Assessment – A Case Study on Nanocellulose. Renneckar Group
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Commercialization of Nanomaterials: A model for the Future
The Virginia Tech Corporate Research Center Translating Nanotechnology Research & Scholarship into Economic Growth
• 150 Businesses and Growing • 120 Acres - 1 million square feet of commercialization space • 2010 AURP Outstanding Research/Science Park
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ICTAS: Nanoscale Characterization and Fabrication Laboratory Located in the CRC-VT
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The future of Sustainable Nanomaterials is in the Development of Ideas that we
are already advancing today in
the field of Sustainable Biomaterials ICTAS contact:
www.ictas.vt.edu [email protected]
PLA
3mm
Sustainable Biomaterials contact: www.sbio.vt.edu
SUMMARY