Recent progress in flow‐induced polymer crystallization

C Nie, F Peng, R Cao, K Cui, J Sheng… - Journal of Polymer …, 2022 - Wiley Online Library
During industrial processing, such as film blowing and injection molding, semicrystalline
polymers have to be subjected to external flow. Flow changes the nucleation rate, crystal …

Direct evidence of interfacial crystallization preventing weld formation during fused filament fabrication of poly (ether ether ketone)

DW Collinson, N von Windheim, K Gall… - Additive Manufacturing, 2022 - Elsevier
Poly (ether ether ketone)(PEEK) is a high-performance, semicrystalline thermoplastic that
has attracted significant interest for material extrusion additive manufacturing techniques …

Shear-induced nematic phase in entangled rod-like PEEK melts

D Parisi, J Seo, RP Schaake, AM Rhoades… - Progress in Polymer …, 2021 - Elsevier
One of the most intriguing properties of rod-like polymers is the ability to form a nematic
phase. Among a broad variety of external stimuli to promote the isotropic (I)-nematic (N) …

Dual Nakamura model for primary and secondary crystallization applied to nonisothermal crystallization of poly (ether ether ketone)

J Seo, X Zhang, RP Schaake… - Polymer Engineering …, 2021 - Wiley Online Library
Non‐isothermal crystallization kinetics has been traditionally predicted using the Nakamura
crystal growth model, which is an integral form of the Avrami equation under the assumption …

Rapid melt crystallization of bisphenol-A polycarbonate jointly induced by pressure and flow

XX Zhang, SG Yang, GJ Zhong, J Lei, D Liu… - …, 2021 - ACS Publications
Bisphenol-A polycarbonate (PC) is an intrinsically crystallizable polymer. Its industrial parts,
however, invariably remain in an amorphous state due to its extremely slow crystallization …

Flow-induced crystallization of poly (ether ether ketone): Universal aspects of specific work revealed by corroborative rheology and x-ray scattering studies

J Seo, D Parisi, AM Gohn, A Han, L Song, Y Liu… - …, 2020 - ACS Publications
When a semicrystalline polymer melt is processed in intense flow, the nucleation rate can be
accelerated and the resultant morphology is transformed to anisotropic structures. These …

Flow-Induced Crystallization Coupled with Strong Memory Effect: Revealing Melt Heterogeneity

R Zhao, Y Liu, X Liu, Y Gao, Z Ma - Macromolecules, 2024 - ACS Publications
Herein, the flow-induced crystallization coupled with an intrinsic strong memory effect was
investigated via in situ wide-angle X-ray diffraction. A poly (butene-1) random copolymer …

Particle Concentration Promotes Flow-Induced Crystallization of High-Molecular-Weight Isotactic Polypropylene

BJ Jacob, X Zhang, J Kim, JD Alexander… - …, 2024 - ACS Publications
Intervals of shear flow that stretch polymer chains form flow-induced precursors which
accelerate crystallization and transform the crystalline morphology from isotropic spherulites …

Role of Glass Fiber in the Flow-Induced Crystallization of Poly (ether ether ketone)

X Zhang, JD Alexander, J Seo, BJ Jacob, G Kort… - …, 2024 - ACS Publications
This study investigates the effects of specific work on flow-induced crystallization and
orientation in neat poly (ether ether ketone)(PEEK) and its glass fiber-reinforced composites …

Shear-induced isotropic–nematic transition in poly (ether ether ketone) melts

D Parisi, J Seo, B Nazari, RP Schaake… - ACS Macro …, 2020 - ACS Publications
In a previous work on a poly (ether ether ketone)(PEEK) melt, above its nominal melting
temperature (T m≅ 335° C), a severe Cox–Merz rule failure was observed. The abrupt …