Abstract:

In order to study the preparation and properties of composites of bacterial cellulose (BC)/polyester nonwovens, BC/ polyester nonwovens composite were self-weven from polyester nonwovens as raw material by biological combination. Scanning electron microscopy, fourier transform infrared spectroscopy, thermal gravimetric analyzer, surface tension and universal testing machines were used to characterize the morphology, structure, thermal stability, hydrophobic and hydrophilic performance and tensile mechanical property. Results show that polyester fibers in nonwovens are adhered, wound and interspersed by BC, achieving good comb ination. The hydroxyl functional groups appear in the composites, and a slight red-shift occurred in the infrared spectrum. The thermal stability and hydrophilicity of the composites are improved. The tensile strength of BC/polyester nonwovens composites is improved and the fracture strength of the composites displays the trend of first increased and then decreasing with the increase of BC content.

Key words: bacterial cellulose, polyester nonwoven, composite material, nanonetwork structure, adhesion