Scholarlink

<p>A recent study focuses on a significant deficiency in bone tissue engineering by creating polymer-based composite materials with improved thermal resistance and mechanical characteristics for use in medical contexts. Although polypropylene (PP) and poly(methyl methacrylate) (PMMA) blends are widely utilized, their mechanical strength and thermal resistance are insufficient, thereby limiting their suitability for load-bearing implants. We synthesized new composite materials by incorporating a sol–gel-produced blend of hydroxyapatite (80 wt.%), carbon fiber (10 wt.%), and boron carbide (10 wt.%) into PP/PMMA matrices in different weight proportions (25/75 and 75/25 wt.%) and varying amounts (10–30 wt.%). Thermogravimetric analysis showed a 20% increase in thermal stability, with the temperature at which degradation begins rising from 265 to 300&#xa0;°C for composites containing 30 wt.% reinforcement. Results from mechanical testing showed a 15% rise in hardness (as measured by the Brinell HB30 method) and a 25% decrease in wear rate for the 75PMMA/25PP composite reinforced with 20 wt.% of the material, which was attributed to uniform distribution and strong interfacial bonding as confirmed by scanning electron microscopy–energy dispersive spectroscopy (SEM–EDS). X-Ray diffraction (XRD) and Fourier-transform infrared (FTIR) analysis revealed increased crystallinity and PO₄<sup>3</sup>⁻/B–C bonding, which correlated with enhanced performance. These results demonstrate the potential of HAp/CF/B<sub>4</sub>C-reinforced PP/PMMA composites as long-lasting biomaterials for orthopedic and dental implants, featuring enhanced thermal and mechanical properties relative to traditional blends.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Structural and mechanical properties of hydroxyapatite, carbon fiber, and B4C in polypropylene and polymethylmethacrylate

  • 期刊论文

  • 发表日期：

    2025年7月4日

查看全文
  • Mehtap Demirel

摘要

A recent study focuses on a significant deficiency in bone tissue engineering by creating polymer-based composite materials with improved thermal resistance and mechanical characteristics for use in medical contexts. Although polypropylene (PP) and poly(methyl methacrylate) (PMMA) blends are widely utilized, their mechanical strength and thermal resistance are insufficient, thereby limiting their suitability for load-bearing implants. We synthesized new composite materials by incorporating a sol–gel-produced blend of hydroxyapatite (80 wt.%), carbon fiber (10 wt.%), and boron carbide (10 wt.%) into PP/PMMA matrices in different weight proportions (25/75 and 75/25 wt.%) and varying amounts (10–30 wt.%). Thermogravimetric analysis showed a 20% increase in thermal stability, with the temperature at which degradation begins rising from 265 to 300 °C for composites containing 30 wt.% reinforcement. Results from mechanical testing showed a 15% rise in hardness (as measured by the Brinell HB30 method) and a 25% decrease in wear rate for the 75PMMA/25PP composite reinforced with 20 wt.% of the material, which was attributed to uniform distribution and strong interfacial bonding as confirmed by scanning electron microscopy–energy dispersive spectroscopy (SEM–EDS). X-Ray diffraction (XRD) and Fourier-transform infrared (FTIR) analysis revealed increased crystallinity and PO₄3⁻/B–C bonding, which correlated with enhanced performance. These results demonstrate the potential of HAp/CF/B4C-reinforced PP/PMMA composites as long-lasting biomaterials for orthopedic and dental implants, featuring enhanced thermal and mechanical properties relative to traditional blends.

Graphical Abstract