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Release characteristics of different diameter Ultrafine fibers as antibacterial materials

Journal of Innovative Optical Health Sciences 2021年第2期4卷 1-10页

作者： Zhiqiang Wei Erniao Liu Hao Li Zhimei Wei Zhi lv Department of Orthopaedics Shanxi Medical University Second Hospital Taiyuan 030001P.R.China Institute of Materials Science and Technology Sichuan University Chengdu 610065P.R.China

Although the electrospinning technique has been devoted to promoting therapeutic purposes as a drug carrier,however,there are still many fundamental problems in this area.This work focuses on a comparison of various diameter polyethersulfone(PES)electrospun Ultrafine fibers as an-timicrobial materials.The fibrous morphology,antimicrobial agent distribution,thermally property,and biocompatibility evaluation of PES-based Ultrafine fibers were systematically in-vestigated.The results demonstrated that the PES-based Ultrafine fibers were suitable as anti-microbial material.Furthermore,the drug release behavior and mechanism were studied through total immersion.The release mechanism was confirmed to Fickian diffusion.It was revealed that the drug max release amount(71.5%)and release rate(7.71)are the highest for the smallest diameter Ultrafine fibers.Meanwhile,the antimicrobial activity of PES Ultrafine fibers is also inversely correlated with the diameter of fiber.The electrospun PES fibers would control their release behavior through the diameter and have a potential application in the wound dressings,such as chronic osteomyelitis and exposure injury.

关键词： Electrospinning polyethersulfone Ultrafine fibers drug release antimicrobial activity

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Recent Advances in ultrafine Fibrous Materials for Effective Warmth Retention

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Advanced Fiber Materials 2023年第3期5卷 847-867页

作者： Sai Wang Cheng Liu Fei Wang Xia Yin Jianyong Yu Shichao Zhang Bin Ding Innovation Center for Textile Science and Technology College of TextilesDonghua UniversityShanghai 201620China

Extremely cold environment has led to a variety of serious public health issues and posed huge burden on the social econ-omy,which is an urgent challenge to the human worldwide.Featured with comfort,convenience,and cost-effectiveness,fibrous materials have been selected as heat insulation materials to protect the human body against the cold for centuries.The advanced Ultrafine fibers,with remarkable softness,small average diameter and pore size,and high porosity,have found extensive attention,as promising candidate for application in reducing the heat loss.In this review,the heat transfer mechanisms for single fiber and fiber assembly are provided,and the typical categories of ultrafine fibrous materials for warmth retention,classified as fibrous membrane and fibrous sponge in terms of aggregate structures,are systematically summarized.In particular,this review comprehensively discusses the fabrication strategies,structure characteristics,and significant properties of various ultrafine fibrous materials.Finally,the current challenges and future development prospects of ultrafine fibrous materials for effective warmth retention are highlighted.

关键词： Ultrafine fibers Membranes Sponges Warmth retention

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静电纺丝制备PVA固定化纤维素酶的研究

静电纺丝制备PVA固定化纤维素酶的研究

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2004年全国高分子材料科学与工程研讨会

作者：邬丽丽袁晓燕盛京天津大学材料科学与工程学院天津大学材料科学与工程学院天津大学材料科学与工程学院

＜正＞静电纺丝是聚合物溶液或熔体借助于高压静电作用进行喷射拉伸而形成超细纤维的纺丝工艺。得到的纤维具有比表面积大、孔隙率高的特点。将静电纺丝超细纤维作为固定化酶的载体,有利于酶与底物充分接触,减小空间位阻的作用,因而有... 详细信息

＜正＞静电纺丝是聚合物溶液或熔体借助于高压静电作用进行喷射拉伸而形成超细纤维的纺丝工艺。得到的纤维具有比表面积大、孔隙率高的特点。将静电纺丝超细纤维作为固定化酶的载体,有利于酶与底物充分接触,减小空间位阻的作用,因而有广阔的发展前景[1]。

关键词： electrospinning Ultrafine fibers immobilization cellulasc poly（vinyl alcohol）

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