What question did this study set out to answer?

To determine the physical mechanisms governing the limiting crystalline lamellar thickness of polymers and oligomers under conditions of high supercooling where standard kinetic theories fail.

November 1, 1978Journal of Macromolecular Science Part B

Crystallization of polymers

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Authors

JRJacques RaultUniversité Paris-Sud

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Implication

Theoretical analysis links lamellar thickness to pre-crystallization chain flexibility in supercooled polymers, indicating liquid-state conformation governs crystal folding.

Key Points

To determine the physical mechanisms governing the limiting crystalline lamellar thickness of polymers and oligomers under conditions of high supercooling where standard kinetic theories fail.
Analyzed the relationship between crystalline lamellar thickness and chain flexibility across pure liquid melts and polymer solutions.
Evaluated the impact of solvent conditions, polymer defect concentration, hydrostatic pressure, pH, and salt concentration on polyelectrolyte and oligomer crystal folding.
Compared measured crystal fold periods to the persistence length of Gaussian polymer chains in the liquid state.
Crystalline lamellae reach a temperature-independent limiting thickness under high supercooling that functions as an intrinsic parameter of the polymer.
Chain flexibility and limiting lamellar thickness exhibit parallel dependencies on solvent environment, defect density, pressure, pH, and ionic strength.
The limiting fold period of crystallized polymers and oligomers is approximately one order of magnitude larger than the persistence length of the liquid Gaussian chain.

Cite This Study

Jacques Rault (1978) studied this question.

synapsesocial.com/papers/6a9ec30b2254d4d1ae1cd7d5 https://doi.org/10.1080/00222347808212274

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Implication

Theoretical analysis links lamellar thickness to pre-crystallization chain flexibility in supercooled polymers, indicating liquid-state conformation governs crystal folding.

Crystallization of polymers

Discussion

Member takes

Implication

Key Points

Cite This Study

Crystallization of polymers

Discussion

Member takes

Implication

Key Points

Cite This Study

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