Melt Memory Effect on Biaxially Oriented Random Copolyamides: Direct Evidence for Stretch-Induced Crystal Retention above the Equilibrium Melting Point

In the processing of semicrystalline polymers, the oriented crystal through flow-induced crystallization (FIC) represents a significant phenomenon that can profoundly influence the final properties of materials. This study investigates the melting and crystallization behavior of biaxial stretch-indu...

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Hlavní autor:	Yunqi Xu (349428) (author)
Další autoři:	Kejian Yang (7027397) (author), Wanding Chen (20503255) (author), Minghui Wu (633770) (author), Yueshuai Xu (22679487) (author), Zhongke Yuan (3938408) (author), Zhikun Zheng (488237) (author), Cheng Wang (102692) (author), Xudong Chen (1274583) (author)
Vydáno:	2025
Témata:	Biophysics Ecology Immunology Chemical Sciences not elsewhere classified varying copolymerized compositions undergo partial relaxation thermal history effect shorter secondary crystals relaxed random coils melt memory effect initial nucleation sites better chain mobility 90 ° c secondary crystal structures induced crystal retention random copolymer pa56 preserved structures serve induced crystal structures high pa512 mol decreasing pa512 mol induced oriented structures 512 random copolymers 512 develops distinct γ form rather structural order even equilibrium melting point c </ sub </ sub >, α form transition kebab structures persisting biaxially oriented pa56 oriented crystal kebab structures α transition induced crystallization >< sub persisting even partially preserved phase transition kebab formation g </ biaxially stretch 512 result 512 forms 512 films upon cooling unprecedented observation theoretical basis study provide study investigates situ pom single temperature significant phenomenon shish kebab
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Melt Memory Effect on Biaxially Oriented Random Copolyamides: Direct Evidence for Stretch-Induced Crystal Retention above the Equilibrium Melting Point

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