Skin-Compatible Carbopol Electrospun Fiber Membranes with pH-Dependent Rheological Properties for Biomedical Applications

IF 4.2 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Daewoo Han, Robert Horvath, Burcu Uner, Giovanni M. Pauletti, Andrew J. Steckl
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Abstract

Properties of pH-responsive electrospun nanofibers incorporated with biocompatible/degradable Carbopol, commonly used in pharmaceuticals and personal care products, are reported. Sonication of Carbopol dispersions prior to electrospinning leads to uniform incorporation into fibers of the host polymer polyvinylpyrrolidone. The hydration behavior is strongly influenced by pH conditions, forming a viscous network at higher pH. Since Carbopol is more responsive to higher pH, at pH > 6 increasing Carbopol concentration leads to increased uptake volume of buffer solution, faster uptake rate and complete gel formation. The physical spreadability (resulting from a combination of viscoelastic properties and the structural polymer network) of the hydrated fibers is evaluated for multiple Carbopol concentrations and pH conditions. At low starting pH of 4, increasing the Carbopol amount results in slightly increasing viscosity while maintain solution pH. On the other hand, at high starting pH of 8 increasing Carbopol concentrations result in significant reduction in the pH of the buffer solution, which in turn decreases the viscosity of the gel and increases its spreadability. These findings provide guidelines for rational designs of pH responsive Carbopol fibers for various applications, including drug delivery, wound dressing, contraceptive devices, and prevention of sexually transmitted diseases.

Abstract Image

生物医学应用中具有ph依赖性流变特性的皮肤相容性卡波波尔静电纺丝纤维膜
报道了通常用于制药和个人护理产品的生物相容性/可降解卡波波尔掺杂的ph响应型静电纺纳米纤维的性能。在静电纺丝之前对卡波波尔分散体进行超声处理,可使其均匀地掺入宿主聚合物聚乙烯吡咯烷酮的纤维中。水化行为受pH条件的强烈影响,在较高的pH条件下形成粘性网络。由于Carbopol对较高的pH响应更强,在pH >;卡波波尔浓度的增加导致缓冲溶液的吸收体积增加,吸收速度加快,凝胶形成完全。在多种Carbopol浓度和pH条件下,评估了水合纤维的物理展布性(由粘弹性特性和结构聚合物网络共同产生)。在较低的初始pH值为4时,增加Carbopol的量,在保持溶液pH的情况下,粘度略有增加。另一方面,在较高的初始pH值为8时,增加Carbopol的浓度会导致缓冲溶液的pH显著降低,从而降低凝胶的粘度,增加其涂抹性。这些发现为合理设计pH响应性卡波波尔纤维的各种应用提供了指导,包括药物输送、伤口敷料、避孕装置和预防性传播疾病。
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来源期刊
Macromolecular Materials and Engineering
Macromolecular Materials and Engineering 工程技术-材料科学:综合
CiteScore
7.30
自引率
5.10%
发文量
328
审稿时长
1.6 months
期刊介绍: Macromolecular Materials and Engineering is the high-quality polymer science journal dedicated to the design, modification, characterization, processing and application of advanced polymeric materials, including membranes, sensors, sustainability, composites, fibers, foams, 3D printing, actuators as well as energy and electronic applications. Macromolecular Materials and Engineering is among the top journals publishing original research in polymer science. The journal presents strictly peer-reviewed Research Articles, Reviews, Perspectives and Comments. ISSN: 1438-7492 (print). 1439-2054 (online). Readership:Polymer scientists, chemists, physicists, materials scientists, engineers Abstracting and Indexing Information: CAS: Chemical Abstracts Service (ACS) CCR Database (Clarivate Analytics) Chemical Abstracts Service/SciFinder (ACS) Chemistry Server Reaction Center (Clarivate Analytics) ChemWeb (ChemIndustry.com) Chimica Database (Elsevier) COMPENDEX (Elsevier) Current Contents: Physical, Chemical & Earth Sciences (Clarivate Analytics) Directory of Open Access Journals (DOAJ) INSPEC (IET) Journal Citation Reports/Science Edition (Clarivate Analytics) Materials Science & Engineering Database (ProQuest) PASCAL Database (INIST/CNRS) Polymer Library (iSmithers RAPRA) Reaction Citation Index (Clarivate Analytics) Science Citation Index (Clarivate Analytics) Science Citation Index Expanded (Clarivate Analytics) SciTech Premium Collection (ProQuest) SCOPUS (Elsevier) Technology Collection (ProQuest) Web of Science (Clarivate Analytics)
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