{"id":100269,"date":"2024-04-23T11:01:55","date_gmt":"2024-04-23T07:31:55","guid":{"rendered":"https:\/\/polymervapooshesh.ir\/?p=100269"},"modified":"2024-04-23T12:48:38","modified_gmt":"2024-04-23T09:18:38","slug":"scientists-fabricate-composites-that-combine-high-strength-and-bioactivity-inspired-by-the-cortical-bone","status":"publish","type":"post","link":"https:\/\/polymervapooshesh.ir\/en\/scientists-fabricate-composites-that-combine-high-strength-and-bioactivity-inspired-by-the-cortical-bone\/","title":{"rendered":"Scientists fabricate composites that combine high strength and bioactivity inspired by the cortical bone"},"content":{"rendered":"<p dir=\"ltr\"><em><strong>Iranpolymer\/Baspar\u00a0<\/strong><\/em>Researchers have created scaffolds with enhanced strength by fabricating 20 vol% polydopamine-modified nano hydroxyapatite (pDA-nHA), featuring a distinctive lamellar structure. These scaffolds were then immersed in a polyetherketoneketone (PEKK) synthesis system for reinforcement, offering an innovative approach to both augment the mechanical robustness of the material and enhance the bioactivity of PEKK.<\/p>\n<p dir=\"ltr\">Nano hydroxyapatite (nHA), the primary inorganic component of bone widely utilized in bone tissue engineering, suffers from poor mechanical properties when used alone. Conversely, polyetherketoneketone (PEKK), a high-performance polymer approved by the US Food and Drug Administration (FDA) and used in dentistry and biomaterial science, struggles with bioinertia, affecting its osteogenesis applications.<\/p>\n<p dir=\"ltr\">In a study\u00a0published\u00a0in the journal\u00a0<i>Supramolecular Materials<\/i>, researchers from Sichuan University, China, introduced pDA-nHA\/PEKK composites that combine\u00a0high strength\u00a0and bioactivity.<\/p>\n<p dir=\"ltr\">&#8220;The optimal combination of nHA and PEKK can achieve higher mechanical property and bioactivity,&#8221; says lead author Zhongyi Wang. &#8220;Nevertheless, conventional melt blending techniques often result in weakened strength due to nanoparticle agglomeration and the lack of chemical bonds between the inorganic and organic constituents.&#8221;<\/p>\n<p dir=\"ltr\">To that end, the team drew inspiration from the structure of cortical bone. By employing freeze-casting technology, the researchers mimicked the bone&#8217;s hierarchical structure, which is known for its exceptional stiffness and toughness. This technique allowed them to produce complex hierarchical materials.<\/p>\n<p dir=\"ltr\">The novel approach, characterized by the in-situ polymerization of PEKK, resulted in the development of pDA-nHA scaffolds with enhanced osteo-inductive abilities and supplemented\u00a0mechanical strength\u00a0through PEKK.<\/p>\n<p dir=\"ltr\">Corresponding Haiyang Yu highlighted this development as an advancement in supramolecular materials, surpassing the strength capabilities of current methods. Yu hopes their approach to hierarchical architecture and in-situ polymerization will inspire further\u00a0scientific discoveries.<\/p>\n<p dir=\"ltr\"><em><strong>phys.org<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Iranpolymer\/Baspar\u00a0Researchers have created scaffolds with enhanced strength by fabricating 20 vol% polydopamine-modified nano hydroxyapatite (pDA-nHA), featuring a distinctive lamellar structure. These scaffolds were then immersed in a polyetherketoneketone (PEKK) synthesis system for reinforcement, offering an innovative approach to both augment the mechanical robustness of the material and enhance the bioactivity of PEKK. Nano hydroxyapatite (nHA), &hellip;<\/p>\n","protected":false},"author":5,"featured_media":100275,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[69],"tags":[54376,2436,1502,54375,54374,54378,54372,54379,54373,54377],"class_list":["post-100269","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-en","tag-bioactivity","tag-chemical-bonds","tag-composites","tag-in-situ-polymerization","tag-nano-hydroxyapatite","tag-nanoparticle-agglomeration","tag-pekk","tag-performance-polymer","tag-polyetherketoneketone","tag-supramolecular-materials"],"_links":{"self":[{"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/posts\/100269","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/comments?post=100269"}],"version-history":[{"count":0,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/posts\/100269\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/media\/100275"}],"wp:attachment":[{"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/media?parent=100269"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/categories?post=100269"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/tags?post=100269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}