Polymers Flashcards
What are the 3 corner stones of polymer science
colloids and interfaces
organic chemistry
physical chemistry
what role do polymers have in pharmacy
drug delivery
devices
packaging
active ingredients
how are polymers used in drug delivery
tableting solubilisers emulsifiers gels coatings pharmacologically active polymers
how are polymers used in devices
inahlers
injectors
what is the difference between polymers and small molecules
aggregate state
dissolution
solution properties
mechanical properties
What state can polymers never be in
gaseous state
what is the first state of polymer dissolution
swelling
Polymer solutions vs solutions viscosity
have higher viscosity compared to solutions of low molecular weight substances of the same concentration
can polymers show elasticity and reversible deformations
yes under certain conditions
what is a monomer
monomer, a molecule of any of a class of compounds, mostly organic, that can react with other molecules to form very large molecules, or polymers.
what is an oligomer
a polymer whose molecules consist of relatively few repeating units.
what is a polymer
polymer, any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, that are multiples of simpler chemical units called monomers.
what is a macro molecule
is a molecule that consists of one or more types of repeated ‘building blocks’.
what is a polymer chain
Polymer chains are fractal objects whose dimensionality is determined by interactions between the monomeric units and solvent molecules.
what is an elementary unit
One of the individuals which, in the aggregate, compose a population: the smallest unit yielding information which, by suitable aggregation, leads to the population under investigation.
What is degree of polymerisation
The degree of polymerization, or DP, is the number of monomeric units in a macromolecule or polymer or oligomer molecule
What is polydispersity
polydispersity is defined as the weight average divided by the number average molecular weight (Mw/Mn)
What is homopolymers and copolymers
A homopolymer is a polymer where every monomer unit (mer) of the chain is the same
a polymer made by reaction of two different monomers, with units of more than one kind.
how do we calculate the molecular weight of a polymer
take weight of repeating unit then multiply by the degree of polymerisation
what is configuration (molecular architecture)`
refers to the order that is determined by chemical bonds. The configuration of a polymer cannot be altered unless chemical bonds are broken and reformed.
What is it called when only one type of monomer is used to build a macromolecule
homopolymer
what are the 6 types of molecular architecture of homopolymers
branched linear ladder star dendrimer crosslinked
what are the four types of copolymers
statistical random copolymers
alternating copolymers
block copolymers
graft copolymers
What are the two main types of polymers
natural
synthetic
