Bionanocellulose/Poly(Vinyl Alcohol) Composites Produced by In-Situ Method and Ex-Situ/Impregnation or Sterilization...

Area of Science:

• Materials Science
• Biotechnology
• Polymer Science

Background:

• Bionanocellulose (BNC) and poly(vinyl alcohol) (PVA) are biocompatible polymers with potential in biomedical and cosmetic applications.
• Developing composite materials requires understanding how preparation methods influence final properties.

Purpose of the Study:

• To synthesize and characterize BNC/PVA composites for biomedical and cosmetic applications.
• To investigate the effect of different manufacturing methods (in-situ, ex-situ with sterilization/impregnation) on composite properties.
• To correlate preparation conditions with utility characteristics.

Main Methods:

• Composite fabrication using in-situ and ex-situ methods.
• Structural and morphological analysis via ATR-FTIR, SEM, and AFM.
• Surface property evaluation using contact angle measurements.
• Crystallinity determination by XRD.
• Mechanical testing (tensile, bursting strength).
• Water uptake assessment via gravimetric method.

Main Results:

• PVA addition enhanced BNC biosynthesis yield and composite base weight.
• Ex-situ composites exhibited superior water absorption capabilities.
• In-situ composites demonstrated enhanced durability and elasticity.
• Preparation method significantly altered mechanical and water uptake properties.

Conclusions:

• The manufacturing process critically influences the utility properties of BNC/PVA composites.
• In-situ and ex-situ methods yield composites with distinct advantages for specific applications.
• These BNC/PVA composites show promise for targeted biomedical and cosmetic uses.