Effect of Microfibrillated Cellulose on Microstructure and Properties of Poly(vinyl alcohol) Foams

Polymers

MariaEmanuela Errico¹  Mariacristina Cocca¹  Gennaro Gentile¹  Roberto Avolio¹  Maurizio Avella¹ 

[1] Institute for Polymers, Composites and Biomaterials, Italian National Research Council-Via Campi Flegrei 34, 80078 Pozzuoli, NA, Italy;

关键词: microfibrillated cellulose;    poly(vinyl alcohol);    foams;    microstructure;    properties;   

DOI  :  10.3390/polym10080813

来源: DOAJ

【 摘 要 】

Poly(vinyl alcohol) foams, containing different amounts of microfibrillated cellulose, were prepared through an eco-friendly procedure based on high-speed mixing and freeze-drying. The effect of filler amount on cell shape and regularity was studied by scanning electron microscopy (SEM) and the evolution of the microstructure was assessed through dynamic cryo-SEM. Fourier Transformed Infrared Analysis and Differential Scanning Calorimetry measurements revealed the presence of hydrogen bond interaction among cellulosic filler and the matrix. The modulus and compression deflection of neat PVA were significantly improved by increasing the amount of microfibrillated cellulose content with respect to foams realised with pulp cellulose fibers.

【 授权许可】

Unknown