Gan‐Ji Zhong

Pressure Annealing Enables Synergistic Regulation of Stereocomplex Crystallization and Orientation in Polylactide

Yi-Qiao Li, Jiayi Ren, Zhanchun Chen, Fei Wang et autres

Abstract Polylactide (PLA), a promising biobased polymer, is limited by the difficulty in simultaneously achieving a high content of stereocomplex crystals (SCs) and high molecular chain orientation. Herein, solid phase extrusion (SPE) is employed to create highly oriented poly(l-lactide)/poly(d-lactide) (PLLA/PDLA) precursor films, …

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Anomalous Suppression of Orientation and Crystallization in Semicrystalline Polymers under Flash Shear Flow

Jie Zhang, Jin Yin, Danyang Zhao, Zhi-Kang Ni et autres

Abstract Flow-induced crystallization (FIC) typically governs the performance of semicrystalline polymers through accelerated crystallization and produces shish-kebab-like structures (typically under steady or strong shear flow conditions; shear rate < 102 s−1). However, FIC behavior under realistic and extreme shear flow conditions remains …

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Synergistic flow-stretch coupling enables an oriented network for high-performance polycarbonate with superior high-speed deformation resistance

Jian-Bin Tang, Jia-Yi Wu, Zhi-Kang Ni, Cheng Tang et autres

cn, fr (code pays fourni par la source)

Regulation of Chain Entanglement Density and Degradation in Polypropylene and Its Effects on Thermal Conduction by an Ultrasonic External Force Field

Aerman Abudurezhake, De-Chao Kong, Gan‐Ji Zhong, Zhong‐Ming Li et autres

This study investigated the effects of ultrasonic power and duration on the rheological, mechanical, and thermally conductive properties of polypropylene (PP) using a self-developed ultrasonic disentanglement apparatus. The optimal conditions of 600 W for 60 s resulted in a drop in zero-shear …

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Gradient‐Engineered Liquid‐Metal Magnetic Hollow Microspheres for Flexible and Broadband Microwave Absorption

Tai-Bao Yang, Han-Rong Wu, Jie Li, Yue‐Yi Wang et autres

The development of high-performance flexible microwave absorption materials (MAMs) is crucial for next-generation wearable stealth and electromagnetic protection, yet it remains challenging to integrate ultra-wideband absorption, lightweight, and mechanical robustness in a single material. Here, a novel collision-mediated energy transfer strategy coupled …

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Synergistic rejuvenation-induced oriented nanocrystal and chain network in polyphenylene sulfide films: Structural evolution and superior integrated performance

Zhi-Kang Ni, Jie Zhang, Jin Yu, Hua‐Dong Huang et autres

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Manipulation Coupling Fields of Shear Flow, Pressure, and Temperature for Polymorphism Structuring in Poly(vinylidene fluoride) Films

Jiayi Ren, Chao-Ju Sun, Zhanchun Chen, Jian-Guo Liang et autres

The crystallization behavior is inevitably influenced by complex and coupled processing fields, particularly shear flow, pressure, and temperature fields. However, the combined effects of these fields on the crystalline structure and electrical properties of poly(vinylidene fluoride) (PVDF) remain unclear. In this work, …

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Rotational shear-induced shish-kebab structures in UHMWPE/HDPE pipes for enhanced hoop strength

Bin-Yuan Liu, Wei Huang, Jiawei Gong, Gan‐Ji Zhong et autres

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A Full-Process Perspective of Hierarchical Structure Development for Injection-Molded Isotactic Polypropylene with β-Nucleating Agent

Lu-Feng Deng, Zhiguang Guo, Zheng-Yuan Chen, Jie Zhang et autres

Flow-induced crystallization of isotactic polypropylene with β-nucleating agent (iPP/β) is investigated using a homemade in situ characterization platform for injection molding, featuring millisecond-scale time-resolved synchrotron X-ray diffraction and scattering techniques (WAXD/SAXS). By combining ex situ microfocus WAXD and scanning electron microscopy (SEM) …

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Comonomer Partition of PA6T/66 Random Copolymers Induced by Coupled Temperature and Pressure Fields

Ji-Zeng Huang, Xin‐Tong Yuan, Zheng-Yuan Chen, Jie Yang et autres

The semi-aromatic co-polyamide PA6T/66, known for its high thermal stability, low moisture absorption, and promising melt-processability, is generally regarded as a typical eutectic copolymer. However, there is no adequate understanding of the eutectic behavior under the coupled field of temperature and pressure …

cn, fr (code pays fourni par la source)

A Scalable, Pollution-Free Protocol of Poly(vinylidene fluoride) In Situ Nanofibrillar Membranes for Effective Oil–Water Separation

Xinrui Gao, Jiayi Ren, Lei Li, Ling Xu et autres

The application of poly(vinylidene fluoride) (PVDF) nanofibrils in the membrane separation field has been extensively limited due to solvent toxicity and complex regulatory techniques of PVDF in the fabrication of nanofibrils. In this work, a scalable and environmental pollution-free protocol based on …

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Synergistic Flow-Stretch Coupling Enables an Oriented Network for High-Performance Polycarbonate with Superior High-Speed Deformation Resistance

Jian-Bin Tang, Jia-Yi Wu, Zhi-Kang Ni, Cheng Tang et autres

cn (code pays fourni par la source)