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In situ preparation and characterization of biocompatible acrylate-terminated polyurethane containing chemically modified multiwalled carbon nanotube

Alishiri, M ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1002/pc.24423
  3. Publisher: John Wiley and Sons Inc , 2018
  4. Abstract:
  5. Biodegradable acrylate-terminated polyurethane/acrylate (APUA) filled with 2-hydroxyethyl methacrylate functionalized carbon nanotube (CNT-HEMA) was prepared by in situ free radical crosslinking. CNT-HEMA enhanced crystallinity of soft domain and caused more phase separation between hard and soft domains of APUA. Tensile testing showed a considerable improvement in elastic modulus (∼160%) and tensile strength (∼30%) at 1 wt% loading. Morphological features of APUA induced by nanotubes were found to be dominant on mechanical properties of APUA/CNT-HEMA. CNT-HEMA increased water contact angle of APUA; however, wettability of APUA/CNT-HEMA maintained in acceptable range for biomedical applications. APUA/CNT-HEMA exhibited lower hydrophobic nature compared to many CNT filled polyurethanes reported in literature due to HEMA functional group, making APUA/CNT-HEMA nanocomposites adequate for biomedical applications. POLYM. COMPOS., 39:E297–E307, 2018. © 2017 Society of Plastics Engineers. © 2017 Society of Plastics Engineers
  6. Keywords:
  7. Biocompatibility ; Carbon nanotubes ; Crosslinking ; Free radicals ; Medical applications ; Nanotubes ; Phase separation ; Polyurethanes ; Tensile strength ; Tensile testing ; Unsaturated polymers ; Yarn ; 2-hydroxyethyl methacrylate ; Biomedical applications ; Free radical crosslinking ; Functionalized carbon nanotubes ; In-situ preparations ; Morphological features ; Polyurethane/acrylate ; Water contact angle ; Multiwalled carbon nanotubes (MWCN)
  8. Source: Polymer Composites ; Volume 39 , April , 2018 , Pages E297-E307 ; 02728397 (ISSN)
  9. URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/pc.24423