<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Hasanabadi, Noushin</dc:creator>
  <dc:creator>Nazockdast, Hossein</dc:creator>
  <dc:creator>Gajewska, Bernadetta</dc:creator>
  <dc:creator>Balog, Sandor</dc:creator>
  <dc:creator>Gunkel, Ilja</dc:creator>
  <dc:creator>Bruns, Nico</dc:creator>
  <dc:creator>Lattuada, Marco</dc:creator>
  <dc:date>2017-11-01</dc:date>
  <dc:description xmlns:ns0="xml" ns0:lang="en">In this work, the influence of carbon nanotubes (CNTs) on the self-assembly of  nanocomposite materials made of cylinder-forming polystyrene-block-poly(ethylene- butylene)-block-polystyrene (SEBS) is studied. CNTs are modified with polystyrene  (PS) brushes by surface-initiated atom transfer radical polymerization to facilitate both  their dispersion and the orientation of neighboring PS domains of the block copolymer  (BCP) along modified CNT-PS. Dynamic rheology is utilized to probe the viscoelastic  and thermal response of the nanoscopic structure of BCP nanocomposites. The  results indicate that nonmodified CNTs increase the BCP microphase separation  temperature because of BCP segmental confinement in the existing 3D network  formed between CNTs, while the opposite holds for the samples filled with modified  CNT-PS. This is explained by severely retarded segmental motion of the matrix chains  due to their preferential interactions with the PS chains of the CNT-PS. Moreover,  transient viscoelastic analysis reveals that modified CNT-PS have a more pronounced  effect on flow-induced BCP structural orientation with much lower structural recovery  rate. It is demonstrated that dynamic-mechanical thermal analysis can provide  valuable insights in understanding the role of CNT incorporation on the microstructure  of BCP nanocomposite samples. Accordingly, the presence of CNT has a significant  promoting effect on microstructural development, comparable to that of annealing.</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>https://folia.unifr.ch/global/documents/306384</dc:identifier>
  <dc:identifier>https://folia.unifr.ch/documents/306384/files/lat_sbc.pdf</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:relation>info:eu-repo/semantics/altIdentifier/doi/10.1002/macp.201700231</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>License undefined</dc:rights>
  <dc:source>Macromolecular Chemistry and Physics. - 2017, vol. 218, no. 22, p. n</dc:source>
  <dc:subject xmlns:ns1="xml" ns1:lang="en">ATRP</dc:subject>
  <dc:subject xmlns:ns2="xml" ns2:lang="en">CNT</dc:subject>
  <dc:subject xmlns:ns3="xml" ns3:lang="en">DMTA</dc:subject>
  <dc:subject xmlns:ns4="xml" ns4:lang="en">rheological characterization</dc:subject>
  <dc:subject xmlns:ns5="xml" ns5:lang="en">SEBS block copolymer</dc:subject>
  <dc:subject xmlns:ns6="xml" ns6:lang="en">structural development</dc:subject>
  <dc:subject>info:eu-repo/classification/udc/54</dc:subject>
  <dc:title xmlns:ns7="xml" ns7:lang="en">Structural behavior of cylindrical polystyrene-block-poly(ethylene-butylene)-block-polystyrene (SEBS) triblock copolymer containing MWCNTs: on the influence of nanoparticle surface modification</dc:title>
  <dc:type>http://purl.org/coar/resource_type/c_6501</dc:type>
</oai_dc:dc>