What question did this study set out to answer?

To examine how primary and secondary crystal formations govern the rheological, tensile, and elastic properties of polyvinyl chloride (PVC).

March 1, 1994Journal of Vinyl Technology

Effect of crystallinity on PVC physical properties

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Authors

RMRobert A. MarshallUniversity of Colorado Boulder

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Implication

Experimental analysis reveals that primary and secondary crystallites govern elastic modulus and tensile behavior in PVC, highlighting the role of thermal history in polymer strength.

Key Points

To examine how primary and secondary crystal formations govern the rheological, tensile, and elastic properties of polyvinyl chloride (PVC).
Characterized morphology of virgin powder lamellar primary crystallites and melt- or solution-derived secondary micellar crystallites.
Evaluated the thermal breakdown of crystal crosslinking networks during melt phases and subsequent recrystallization during cooling and plastisol gelling.
Both primary and secondary crystallite varieties generate loose, crosslinking networks that substantially dictate polymer rheological behavior.
Thermal destruction of primary crystallite networks during melting induces a direct decline in elastic modulus.
Controlled cooling from the fused state yields secondary crystallites that alter tensile strength and elongation properties.

Cite This Study

Robert A. Marshall (1994) studied this question.

synapsesocial.com/papers/6a82b78eaa66c98ddba0cd56 https://doi.org/10.1002/vnl.730160110

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Implication

Experimental analysis reveals that primary and secondary crystallites govern elastic modulus and tensile behavior in PVC, highlighting the role of thermal history in polymer strength.

Effect of crystallinity on PVC physical properties

Discussion

Member takes

Implication

Key Points

Cite This Study

Effect of crystallinity on PVC physical properties

Discussion

Member takes

Implication

Key Points

Cite This Study

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