Cellulose-Silica Nanocomposites of High Reinforcing Content with Fungi Decay Resistance by One-Pot Synthesis

Materials

Rubén López-Martínez¹  Elva Bazán-Mora¹  Georgina Nieto-Castañeda²  Miguel Angel Aguilar-González²  Patricia Quintana Owen³  Patricia Ponce-Peña⁴  M. Azucena González-Lozano⁴  Martha Poisot⁵  M. Concepción Rodríguez-Robledo⁵  Guillermo Ramírez-Galicia⁵ 

[1] Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, CdMx 04510, Mexico;Facultad de Ciencias, Universidad Nacional Autónoma de México, Circuito Interior, Ciudad Universitaria, CdMx 04510, Mexico;Laboratorio Nacional de Nano y Biomateriales, Depto. de Física Aplicada, CINVESTAV Mérida, km 6 Ant. Carr. a Progreso, Mérida 97310, Mexico;Universidad Juárez del Estado de Durango, Facultad de Ciencias Químicas. Av. Veterinaria S/N, Circuito Universitario, Durango 34120, Mexico;Universidad del Papaloapan, Circuito Central 200, Parque Industrial, Tuxtepec 68301, Mexico;

关键词: nanocomposites;    hybrid materials;    one-pot synthesis;    thermal stability;    fungi decay resistance;   

DOI  :  10.3390/ma11040575

来源: DOAJ

【 摘 要 】

Hybrid bionanocomposites based on cellulose matrix, with silica nanoparticles as reinforcers, were prepared by one-pot synthesis of cellulose surface modified by solvent exchange method to keep the biopolymer net void for hosting inorganic nanoparticles. Neither expensive inorganic-particle precursors nor crosslinker agents or catalysts were used for effective dispersion of reinforcer concentration up to 50 wt %. Scanning electron microscopy of the nanocomposites shows homogeneous dispersion of reinforcers in the surface modified cellulose matrix. The FTIR spectra demonstrated the cellulose features even at 50 weight percent content of silica nanoparticles. Such a high content of silica provides high thermal stability to composites, as seen by TGA-DSC. The fungi decay resistance to Trametes versicolor was measured by standard test showing good resistance even with no addition of antifungal agents. This one-pot synthesis of biobased hybrid materials represents an excellent way for industrial production of high performance materials, with a high content of inorganic nanoparticles, for a wide variety of applications.

【 授权许可】

Unknown