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  • Open Access

    PROCEEDINGS

    Rapid Volumetric Printing of Multi-Material pH-Responsive Drug Delivery Systems

    Yifei Wang, Xiaoxiao Han*, Miaomiao Yuan, Yangguang Zhao, Wei Zhu, Feng Chen

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.33, No.2, pp. 1-1, 2025, DOI:10.32604/icces.2025.012585

    Abstract With the advancement of the personalised medicine industry, multi-material targeted drug delivery systems have garnered significant attention due to the higher drug bioavailability and synergistic effects of combined drug therapies. However, the fabrication throughput of such systems often fails to satisfy the demands of clinical applications. Volumetric printing, distinguished by its remarkable capability for rapid fabrication, presents a promising approach for fabricating these systems. Nevertheless, during volumetric printing, formed parts are prone to displacement relative to their intended locations due to variations in ink density, viscosity, and other factors, resulting in geometric distortion and complicating… More >

  • Open Access

    ARTICLE

    Preparation of Hollow-Porous Rosin-Based Polyurethane Microspheres with pH-Responsive Characteristics

    Caili Yu, Hao Liu, Jintao Shao, Faai Zhang*

    Journal of Renewable Materials, Vol.10, No.4, pp. 1049-1061, 2022, DOI:10.32604/jrm.2022.017315 - 02 November 2021

    Abstract Preparation of polymer microspheres from naturally occurring resource is a challenge. Here, a rosin-based polyol (RAG) was used to prepare polyurethane resin (RPU) firstly, and then act as both self-assembled precursor and emulsifier, rosin based polyurethane microspheres (RPUMs) were prepared. In the process of self-emulsification, the RPU formed vesicles by self-assembly. The outer shell of the vesicle consisted of hydrophilic segments, while the inner shell contained the hydrophobic phase. After cross-linking the RPU and removal of the solvent in the core, the porous-hollow microspheres with pH-sensitive were obtained. The microspheres were characterized by optical microscope More > Graphic Abstract

    Preparation of Hollow-Porous Rosin-Based Polyurethane Microspheres with pH-Responsive Characteristics

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