<p>Preparation of a sustainable bio-copolymer based on Luffa cylindrica cellulose and poly(e-caprolactone) for bioplastic applications<br></p>


AKAY Ö., Altınkök Ç., Acik G., YÜCE H., EGE G. K. , GENÇ G.

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, vol.196, pp.98-106, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 196
  • Publication Date: 2022
  • Doi Number: 10.1016/j.ijbiomac.2021.12.051
  • Journal Name: INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, EMBASE, Food Science & Technology Abstracts, INSPEC, MEDLINE, Veterinary Science Database
  • Page Numbers: pp.98-106
  • Keywords: Biodegradability, Cellulose, Graft copolymer, Luffa cylindrica, Poly(e-caprolactone), RING-OPENING POLYMERIZATION, GRAFT-COPOLYMERS, ENZYMATIC DEGRADATION, MECHANICAL-PROPERTIES, FIBER, COMPOSITES, SPONGE, POLYURETHANE, BEHAVIOR, MATRICES
  • Istanbul Technical University Affiliated: Yes

Abstract

In this research, a bio-based graft copolymer (LCC-g-PCL) based on the cellulose of Luffa cylindrica (LCC) main chain possessing poly(epsilon-caprolactone) (PCL) pendant groups is synthesized through a grafting from approach via ring-opening polymerization (ROP). For this purpose, LCC, extracted from luffa sponges by combined method, is utilized for ROP of epsilon-caprolactone (epsilon-CL) as a macro-initiator in the presence of stannous octoate as a catalyst. Fourier transform infrared (FT-IR), proton and carbon nuclear magnetic resonance (H-1 NMR and C-13 NMR) spectroscopies are utilized to structurally indicate the success of ROP, while the achieved graft copolymer is analyzed in detail by comparing with LCC and neat PCL in terms of wettability, thermal and degradation behaviors by conducting water contact angle (WCA) measurements, thermogravimetric and differential scanning calorimetry analyses (TGA and DSC) and in vitro both hydrolytic and enzymatic biodegradation tests, respectively. The results of conducted tests show that the incorporation of PCL groups on LCC provide the increasing hydrophobicity. In addition, the degradation behavior of the LCC-g-PCL copolymer is found to be more pronounced under enzymatic medium rather than hydrolytic conditions. It is anticipated from the results that LCC-g- PCL can be a potential eco-friendly material particularly in bioplastic industry.