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Crystallization of polymers

Index Crystallization of polymers

Crystallization of polymers is a process associated with partial alignment of their molecular chains. [1]

40 relations: Avrami equation, Creep (deformation), Crystallinity, Density, Differential scanning calorimetry, Extrusion, Glass transition, High-density polyethylene, Hoffman nucleation theory, Infrared spectroscopy, Injection moulding, Lamella (materials), Liquid-crystal polymer, Low-density polyethylene, Melting point, Modeling of polymer crystals, Natural rubber, Nuclear magnetic resonance, Nucleation, Nylon, Polarized light microscopy, Polybutylene terephthalate, Polyethylene, Polyethylene terephthalate, Polymer, Polyoxymethylene, Polypropylene, Polytetrafluoroethylene, Rate equation, Silicone, Spherulite (polymer physics), Strain crystallization, Stress (mechanics), Tacticity, Temperature gradient, Transmission electron microscopy, Van der Waals force, Vinyl polymer, Viscoelasticity, X-ray crystallography.

Avrami equation

The Avrami equation describes how solids transform from one phase (state of matter) to another at constant temperature.

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Creep (deformation)

In materials science, creep (sometimes called cold flow) is the tendency of a solid material to move slowly or deform permanently under the influence of mechanical stresses.

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Crystallinity

Crystallinity refers to the degree of structural order in a solid.

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Density

The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.

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Differential scanning calorimetry

Differential scanning calorimetry, or DSC, is a thermoanalytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature.

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Extrusion

Extrusion is a process used to create objects of a fixed cross-sectional profile.

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Glass transition

The glass–liquid transition, or glass transition, is the gradual and reversible transition in amorphous materials (or in amorphous regions within semicrystalline materials), from a hard and relatively brittle "glassy" state into a viscous or rubbery state as the temperature is increased.

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High-density polyethylene

High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a polyethylene thermoplastic made from petroleum.

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Hoffman nucleation theory

Hoffman nucleation theory is a theory developed by John D. Hoffman and coworkers in the 1970s and 80s that attempts to describe the crystallization of a polymer in terms of the kinetics and thermodynamics of polymer surface nucleation.

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Infrared spectroscopy

Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) involves the interaction of infrared radiation with matter.

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Injection moulding

Injection moulding (British English) or injection molding (American English) is a manufacturing process for producing parts by injecting molten material into a mould.

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Lamella (materials)

A lamella (plural lamellae) is a small plate or flake, from the Latin, and may also be used to refer to collections of fine sheets of material held adjacent to one another, in a gill-shaped structure, often with fluid in between though sometimes simply a set of 'welded' plates.

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Liquid-crystal polymer

Liquid-crystal polymers (LCPs) are a class of aromatic polymers.

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Low-density polyethylene

Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene.

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Melting point

The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid at atmospheric pressure.

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Modeling of polymer crystals

Polymer crystals have different properties than simple atomic crystals.

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Natural rubber

Natural rubber, also called India rubber or caoutchouc, as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds, plus water.

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Nuclear magnetic resonance

Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a magnetic field absorb and re-emit electromagnetic radiation.

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Nucleation

Nucleation is the first step in the formation of either a new thermodynamic phase or a new structure via self-assembly or self-organization.

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Nylon

Nylon is a generic designation for a family of synthetic polymers, based on aliphatic or semi-aromatic polyamides.

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Polarized light microscopy

Polarized light microscopy can mean any of a number of optical microscopy techniques involving polarized light.

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Polybutylene terephthalate

Polybutylene terephthalate (PBT) is a thermoplastic engineering polymer that is used as an insulator in the electrical and electronics industries.

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Polyethylene

Polyethylene or polythene (abbreviated PE; IUPAC name polyethene or poly(ethylene)) is the most common plastic.

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Polyethylene terephthalate

Polyethylene terephthalate (sometimes written poly(ethylene terephthalate)), commonly abbreviated PET, PETE, or the obsolete PETP or PET-P, is the most common thermoplastic polymer resin of the polyester family and is used in fibres for clothing, containers for liquids and foods, thermoforming for manufacturing, and in combination with glass fibre for engineering resins.

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Polymer

A polymer (Greek poly-, "many" + -mer, "part") is a large molecule, or macromolecule, composed of many repeated subunits.

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Polyoxymethylene

Polyoxymethylene (POM), also known as acetal, polyacetal, and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high stiffness, low friction, and excellent dimensional stability.

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Polypropylene

Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications.

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Polytetrafluoroethylene

Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications.

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Rate equation

The rate law or rate equation for a chemical reaction is an equation that links the reaction rate with the concentrations or pressures of the reactants and constant parameters (normally rate coefficients and partial reaction orders).

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Silicone

Silicones, also known as polysiloxanes, are polymers that include any inert, synthetic compound made up of repeating units of siloxane, which is a chain of alternating silicon atoms and oxygen atoms, combined with carbon, hydrogen, and sometimes other elements.

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Spherulite (polymer physics)

In polymer physics, spherulites (from Greek sphaira.

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Strain crystallization

Strain crystallization is a phenomenon in which an initially amorphous solid material undergoes a phase transformation due to the application of strain.

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Stress (mechanics)

In continuum mechanics, stress is a physical quantity that expresses the internal forces that neighboring particles of a continuous material exert on each other, while strain is the measure of the deformation of the material.

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Tacticity

Tacticity (from Greek τακτικός taktikos "of or relating to arrangement or order") is the relative stereochemistry of adjacent chiral centers within a macromolecule.

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Temperature gradient

A temperature gradient is a physical quantity that describes in which direction and at what rate the temperature changes the most rapidly around a particular location.

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Transmission electron microscopy

Transmission electron microscopy (TEM, also sometimes conventional transmission electron microscopy or CTEM) is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image.

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Van der Waals force

In molecular physics, the van der Waals forces, named after Dutch scientist Johannes Diderik van der Waals, are distance-dependent interactions between atoms or molecules.

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Vinyl polymer

Vinyl polymers are a group of polymers derived from vinyl monomers.

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Viscoelasticity

Viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation.

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X-ray crystallography

X-ray crystallography is a technique used for determining the atomic and molecular structure of a crystal, in which the crystalline atoms cause a beam of incident X-rays to diffract into many specific directions.

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Redirects here:

Crystallisation of polymers, Polymer crystallization, Semi-crystalline polymer, Semi-crystallline polymers, Semicrystalline polymer, Semicrystalline polymers.

References

[1] https://en.wikipedia.org/wiki/Crystallization_of_polymers

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