Effect of nonmodified and organically modified montmorillonite incorporation on polyamide 6/acrylonitrile-ethylene-propylene-diene-styrene/methyl methacrylate-co-maleic anhydride system

Autor(es)

de Oliveira, Amanda Dantas ^[1] ; de Castro, Lucas Daniel Chiba ^[2] ; Goncalves Beatrice, Cesar Augusto ^[3] ; de Almeida Lucas, Alessandra ^[3] ; Pessan, Luiz Antonio ^[3]

Afiliação do(s) autor(es)

^[1] Univ Fed Pelotas, Technol Dev Ctr, Pelotas, RS - Brazil

^[2] Univ Sao Paulo, Sao Carlos Inst Phys, Sao Paulo - Brazil

^[3] Univ Fed Sao Carlos, Dept Mat Engn, Grad Program Mat Sci & Engn, Sao Carlos - Brazil

• Tipo de documento: Artigo Científico
• Fonte: POLYMER CRYSTALLIZATION; OCT 2021.
• Citações Web of Science: 0

Resumo

Nanocomposites based on polyamide 6/acrylonitrile-ethylene-propylene-diene-styrene/methyl methacrylate-co-maleic anhydride (PA6/AES/MMA-MA) system were prepared through the incorporation of the nonmodified montmorillonite Cloisite (R) Na+ (Nano Na+) and the organically modified montmorillonite Cloisite (R) 30B (Nano 30B) via melt blending process. Nano Na+ exhibits an intercalated structure with large tactoids and mechanical performance comparable to the ternary blend. On the other hand, Nano 30B exhibits exfoliated structure and a significant enhancement of stiffness as a result of the high interaction between PA6/Cloisite (R) 30B. After an extensive investigation concerning the crystalline structure of the nanocomposites, we hypothesized that such high interaction between PA6/Cloisite (R) 30B hampers the crystallization process of PA6, so small and imperfect gamma-crystals were predominantly formed in Nano 30B. In turn, the low interaction between PA6/Cloisite (R) Na+ did not negatively affect the PA6 crystallization process; quite the opposite, we believe that the large tactoids observed in Nano Na+ might be acting as nucleation sites, resulting in a large degree of crystallinity and a considerable ratio of alpha-phase. (AU)

• Processo FAPESP: 20/02938-0 - Padrões coloridos baseados em cristais fotônicos bioinspirados para aplicações mecanocromáticas
• Beneficiário: Lucas Daniel Chiba de Castro
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado