1 Ocak 1997 Dergi makalesi Açık Erişim

Ozarslan, O; Yilmaz, T; Yildiz, E; Fiedeldei, U; Kuyulu, A; Gungor, A

DataCite XML

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/104147</identifier>
  <creators>
    <creator>
      <creatorName>Ozarslan, O</creatorName>
      <givenName>O</givenName>
      <familyName>Ozarslan</familyName>
    </creator>
    <creator>
      <creatorName>Yilmaz, T</creatorName>
      <givenName>T</givenName>
      <familyName>Yilmaz</familyName>
    </creator>
    <creator>
      <creatorName>Yildiz, E</creatorName>
      <givenName>E</givenName>
      <familyName>Yildiz</familyName>
    </creator>
    <creator>
      <creatorName>Fiedeldei, U</creatorName>
      <givenName>U</givenName>
      <familyName>Fiedeldei</familyName>
    </creator>
    <creator>
      <creatorName>Kuyulu, A</creatorName>
      <givenName>A</givenName>
      <familyName>Kuyulu</familyName>
    </creator>
    <creator>
      <creatorName>Gungor, A</creatorName>
      <givenName>A</givenName>
      <familyName>Gungor</familyName>
    </creator>
  </creators>
  <titles>
    <title>The Preparation Of Perfectly Alternating Poly(Amide-Imide)S Via Amide Unit Containing New Diamine</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>1997</publicationYear>
  <dates>
    <date dateType="Issued">1997-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/104147</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.81043/aperta.104146</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.81043/aperta.104147</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">The synthesis of N,N'-bis(4'-amino-4-biphenylene) isophthalamide (BABPI) and its applicability as a new diamine for the preparation of a series of new, high T-g, perfectly alternating poly(amide-imide)s is described. BABPI was synthesized from the catalytic reduction of the corresponding dinitro compound which was prepared by the condensation of isophthaloyl chloride and 4-amino-4'-nitrobiphenyl. The modified selective reduction technique was used for the preparation of 4-amino-4'-nitrobiphenyl from 4,4'-dinitro-biphenyl. Poly(amide-imide)s were synthesized by polycon densation of diamine BABPI with various commercially available aromatic dianhydrides via a conventional two-step procedure. In the first step, poly(amic-acid)s were prepared in a polar aprotic solvent, such as N-methyl pyrrolidone (NMP) at room temperature. Depending on the dianhydride used, intrinsic viscosities of poly(amic-acid)s were found to range between 0.43-0.69 dL/g. Bulk thermal imidization technique was used to obtain fully imidized poly(amide-imide)s at the second step. The synthesized poly(amide-imide)s showed good thermal stability up to 320 degrees C and the 10% weight loss temperatures were recorded in the range of 525-550 degrees C as evidenced by thermogravimetric analysis (TGA). The glass transition temperatures were found to be between 225-235 degrees C from differential scanning calorimeter (DSC) measurements. (C) 1997 John Wiley &amp;amp; Sons, Inc.</description>
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