triglyceride crystallization model systems for polymer crystallization?...
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Triglyceride crystallizationmodel systems for polymer crystallization?
melt
Poly(propylene-co-1-pentene)for a better impact/stiffness balance and
excellent optical properties
Model of crystal structure
of the new trigonal form,
with disorder in the
positioning of the
lateral groups.
spherulites
granular base morphology
Fringed micelles - clusters
lamellar base morphology
Shorter < Ethylene Sequence Length >
Comonomer ExclusionCrystal Size Reduction
Lowering of Crystallinity and
Melting Point
Increasing Comonomer Content
Predicting the Behaviour of Polymer Materials and Devices
Theory & Computer SimulationMolecular computer simulation and theory
are used to understand and predict the properties of polymer materials and devices.
HPC Hardware & Advanced Software & Theory are available.
Simulation & theory studies are of importance for the experimentally oriented topics.
Projects & MilestonesSingle chain behaviour in relation to molecular parameters & confinement (motors, valves, pumps)Self-assembly of supramolecular polymers.(Hydro)gels and polymer/liquid crystal mixtures
Molecular Simulation of Polymer Brush Conformation
Ting.Li @chem.kuleuven.be & [email protected]
Various Morphologies of a Single Polymer Chain
<= Simulation of Colloid Suspensions and
Polymer Chain Absorption
Polymer Dispersed Liquid Crystals (PDLCs)
“Swiss cheese" polymer matrix with liquid crystal in the holes. PDLC transparency controlled by electric field. PDLC quality determined by morphology
Smart Polymers on DisplayProjection Displays, Tuneable Mirrors & Filters
Potential applicationsProjection display, Paintable display,Flexible display, Rollable display;Tuneable mirrors, Tunable color filters (band gap materials)
Projects & MilestonesMake a demonstrator PDLC displayMaking tuneable mirror or color filter Make a demonstrator mirrorMake a demonstartor color filter
Making PDLC’s Characterizing
phase separation kineticsPDLC structural propertiesoptical properties
Linking PDLC & material properties
Stimulus
Polymers in (Directed) Motion Molecular Motors, Valves & Pumps
Stimulus
COIL GLOBULE(e.g. T, pH, ions, E-field)
Single Chain CollapseCan create motion in polymer micro- and nano-devices.
Solute in
Solute out
Stimulus
0.1 mm
Molecular piston In a gel single chain collapse gives work
Molecular valvePolymer brush controls aperture.
Molecular pump: valves & piston
Fields of Applications: (Bio)Medical: sensors, drugs delivery, stents, micro/nano motors, pumps & valves, actuators.Microfluidics: Molecular Valves, motors & pumps; Micro-robotics: Artificial Muscles, Actuators;Smart Coatings: Adapting surfaces (polarity switches),
Projects & MilestonesMolecular valve in confined space Molecular pump in confined space Anisotropic motion Single molecule motor with directed motionDevice & molecular properties relationships
2 Volts potential on/offArtificial Muscle: Directed Motion
Self-Assembling Supramolecular Block copolymers
Functional Polymeric Nanomaterials
x = 2.0 x = 1.5 x = 1.0
PS-block-P4VP(CSA)1.0(PDP)x
Supramolecular block copolymers: THE BUILDING BLOCKS for nanostructuring
Fields of Applications: Nanoparticles, Nano-porous membranes, Self assembled color filters, Drug delivery
Projects & MilestonesColor tuneable reflectorsSmart surfaces Smart nanoparticles,Nano-porous membranes, valves & pumps
Demonstrator tunable reflectorDemonstrator functional nano-porous membrane
PS P4VP(DBSA)y
30 Å
up to 1400 Å
core-shell nanorods
nanoporous membrane
Hierarchical structures Cleaving (optional)20-100 nm
3-8 nm