{"id":{"repo_id":"unt","oai_identifier":"info:ark/67531/metadc2729"},"canonical_url":"https://search.dev.ndltd.org/etd/unt/info:ark/67531/metadc2729","repository":{"repo_id":"unt","name":"University of North Texas","base_url":"https://digital.library.unt.edu/oai/"},"display":{"title":"Preparation and Characterization of a Treated Montmorillonite Clay and Epoxy Nanocomposite","abstract":"Montmorillonite reinforced polymers are a new development in the area of nanocomposite materials. Since reinforcement of epoxy is important to the development of high strength adhesives and composite matrices, the introduction of montmorillonite to epoxy is of interest. Compositional effects on epoxy reactivity, on molecular relaxation, and on mechanical properties were investigated. Change in reactivity was determined by Differential Scanning Calorimetry. Tensile properties at room temperature indicated improved modulus and retention of strength of the epoxy matrix but a decreased elongation to failure. Depression of dry nanocomposite glass transition was observed for nanocomposites beyond 5% by weight montmorillonite. Samples that were saturated with water showed lower moduli due to the epoxy matrix. The greatest moisture absorption rate was found at 7%, the least at 3%.","abstract_html":"Montmorillonite reinforced polymers are a new development in the area of nanocomposite materials. Since reinforcement of epoxy is important to the development of high strength adhesives and composite matrices, the introduction of montmorillonite to epoxy is of interest. Compositional effects on epoxy reactivity, on molecular relaxation, and on mechanical properties were investigated. Change in reactivity was determined by Differential Scanning Calorimetry. Tensile properties at room temperature indicated improved modulus and retention of strength of the epoxy matrix but a decreased elongation to failure. Depression of dry nanocomposite glass transition was observed for nanocomposites beyond 5% by weight montmorillonite. Samples that were saturated with water showed lower moduli due to the epoxy matrix. The greatest moisture absorption rate was found at 7%, the least at 3%.","abstract_has_math":false,"creators":["Butzloff, Peter Robert"],"institution":"University of North Texas","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["D'Souza, Nandika A.","Crane, David","Golden, Teresa D.","Reidy, Richard","Wallace, Robert M.","Gnade, Bruce"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2000,"date_issued":"2000-12","date_published":"2000-12","updated_at":"2026-07-24T05:34:52Z","subjects":["Composite materials.","Polymers.","Montmorillonite.","Epoxy compounds.","glass transition","nanocomposite materials","montmorillonite reinforced polymers","epoxy matrix","moisture absorption"],"languages":["English"],"rights":["Public","Copyright","Butzloff, Peter Robert","Copyright is held by the author, unless otherwise noted. All rights reserved."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["oclc: 47656567","https://digital.library.unt.edu/ark:/67531/metadc2729/","ark: ark:/67531/metadc2729"],"render_values":[{"text":"oclc: 47656567","href":null,"code":true},{"text":"https://digital.library.unt.edu/ark:/67531/metadc2729/","href":"https://digital.library.unt.edu/ark:/67531/metadc2729/","code":true},{"text":"ark: ark:/67531/metadc2729","href":null,"code":true}]}]},"links":{"outbound_url":"https://doi.org/10.12794/metadc2729","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["D'Souza, Nandika A.","Crane, David","Golden, Teresa D.","Reidy, Richard","Wallace, Robert M.","Gnade, Bruce"]},{"key":"dc:creator","label":"Author","values":["Butzloff, Peter Robert"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2000-12"]},{"key":"dc:publisher","label":"Institution","values":["University of North Texas"]},{"key":"dc:type","label":"Dc Type","values":["Thesis or Dissertation"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Composite materials.","Polymers.","Montmorillonite.","Epoxy compounds.","glass transition","nanocomposite materials","montmorillonite reinforced polymers","epoxy matrix","moisture absorption"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:rights","label":"Dc Rights","values":["Public","Copyright","Butzloff, Peter Robert","Copyright is held by the author, unless otherwise noted. 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Depression of dry nanocomposite glass transition was observed for nanocomposites beyond 5% by weight montmorillonite. Samples that were saturated with water showed lower moduli due to the epoxy matrix. The greatest moisture absorption rate was found at 7%, the least at 3%."]},{"key":"dc:format","label":"Dc Format","values":["Text"]},{"key":"dc:title","label":"Title","values":["Preparation and Characterization of a Treated Montmorillonite Clay and Epoxy Nanocomposite"]}]}],"canonical_facts":{"dc:contributor":["D'Souza, Nandika A.","Crane, David","Golden, Teresa D.","Reidy, Richard","Wallace, Robert M.","Gnade, Bruce"],"dc:creator":["Butzloff, Peter Robert"],"dc:date":["2000-12"],"dc:description":["Montmorillonite reinforced polymers are a new development in the area of nanocomposite materials. Since reinforcement of epoxy is important to the development of high strength adhesives and composite matrices, the introduction of montmorillonite to epoxy is of interest. Compositional effects on epoxy reactivity, on molecular relaxation, and on mechanical properties were investigated. Change in reactivity was determined by Differential Scanning Calorimetry. Tensile properties at room temperature indicated improved modulus and retention of strength of the epoxy matrix but a decreased elongation to failure. Depression of dry nanocomposite glass transition was observed for nanocomposites beyond 5% by weight montmorillonite. Samples that were saturated with water showed lower moduli due to the epoxy matrix. The greatest moisture absorption rate was found at 7%, the least at 3%."],"dc:format":["Text"],"dc:identifier":["oclc: 47656567","doi: 10.12794/metadc2729","https://digital.library.unt.edu/ark:/67531/metadc2729/","ark: ark:/67531/metadc2729"],"dc:language":["English"],"dc:publisher":["University of North Texas"],"dc:rights":["Public","Copyright","Butzloff, Peter Robert","Copyright is held by the author, unless otherwise noted. All rights reserved."],"dc:subject":["Composite materials.","Polymers.","Montmorillonite.","Epoxy compounds.","glass transition","nanocomposite materials","montmorillonite reinforced polymers","epoxy matrix","moisture absorption"],"dc:title":["Preparation and Characterization of a Treated Montmorillonite Clay and Epoxy Nanocomposite"],"dc:type":["Thesis or Dissertation"]},"updated_at":"2026-07-24T05:34:52Z"}