SURFACE MODIFICATION OF HYDROXYAPATITE AND ITS EFFECT ON PLA COMPOSITES PREPARED BY CASTING

Maria Jose Arbelaez Cardona; ENZO GIGENA; Carlos Nelson Elias; Raquel evangelina martini; Ezequiel Perez

Todos os Trabalhos

Trabalho Completo

Resumo

DOI

10.29327/9786527219743.1377856

Título do Trabalho

SURFACE MODIFICATION OF HYDROXYAPATITE AND ITS EFFECT ON PLA COMPOSITES PREPARED BY CASTING

Autores

Maria Jose Arbelaez Cardona
ENZO GIGENA
Carlos Nelson Elias
Raquel evangelina martini
Ezequiel Perez

Modalidade

Artigo Completo - Template

Área temática

Biomateriais poliméricos

Data de Publicação

30/01/2026

País da Publicação

Brasil

Idioma da Publicação

pt-BR

Página do Trabalho

https://www.even3.com.br/anais/biomat25/1377856-surface-modification-of-hydroxyapatite-and-its-effect-on-pla-composites-prepared-by-casting

ISBN

978-65-272-1974-3

Palavras-Chave

PLA; hydroxyapatite; composite films; surface modification; functional surfaces.

Resumo

Developing polymer–ceramic composites with controlled properties is essential for optimizing functional films for coatings and flexible devices. This study investigated poly(lactic acid) (PLA) films reinforced with hydroxyapatite (HA) at 5, 10, and 20 wt%, including HA surface-modified with PLA oligomers (Mw 2000), to evaluate how filler concentration and surface modification influence mechanical, thermal, and surface properties. Results show that surface-modified HA improves particle dispersion and interfacial adhesion, producing films with higher stiffness and hardness, particularly at 20 wt% HA modified, while crystallinity peaks at low HA concentration (5 %). Surface modification also generates rougher, more hydrophilic surfaces, enabling control over film topography and functional properties. Overall, the study demonstrates that HA incorporation and surface modification significantly affect the mechanical, thermal, and surface properties of PLA films. These findings provide insights into polymer–ceramic interactions in model film systems, highlighting strategies to optimize particle dispersion, interfacial adhesion, and surface functionality. Furthermore, this study shows that tuning HA concentration and surface chemistry is an effective strategy to optimize mechanical and surface properties of PLA films, providing guidance for the design of advanced functional materials.

Título do Evento: Congresso de Ciência e Tecnologia dos Biomateriais - Biomat25
Título dos Anais do Evento: Anais do Congresso de Ciência e Tecnologia dos Biomaterias - BIOMAT25
Nome da Editora: Even3
Meio de Divulgação: Meio Digital
DOI

Como citar

CARDONA, Maria Jose Arbelaez et al.. SURFACE MODIFICATION OF HYDROXYAPATITE AND ITS EFFECT ON PLA COMPOSITES PREPARED BY CASTING.. In: Anais do Congresso de Ciência e Tecnologia dos Biomaterias - BIOMAT25. Anais...Rio de Janeiro(RJ) Instituto Militar de Engenharia (IME), 2025. Disponível em: https//www.even3.com.br/anais/biomat25/1377856-SURFACE-MODIFICATION-OF-HYDROXYAPATITE-AND-ITS-EFFECT-ON-PLA-COMPOSITES-PREPARED-BY-CASTING. Acesso em: 12/02/2026