Yazar "Genc, Merve" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim Yok
    Öğe
    A Novel Approach to the Development of Natural Resin-Based Biopolymer in the Presence of a Reusable Catalyst: Characterization and Modeling of Material Properties
    (Wiley, 2025) Angin, Naile; Ertas, Murat; Aras, Omur; Genc, Merve
    The rise in environmental and health concerns has led to increasing attention to nature-derived materials. Natural resin (NR) is secreted by pine trees, and it is a great monomer source for synthesizing biopolymers. The objective of this study is to produce terpene rosin phenolic resin (TRPR) from NR, turpentine, and phenol by applying a novel polymerization technique. An environmentally friendly and reusable catalyst (Amberlyst15) was chosen instead of traditional ones. TRPR samples were chemically characterized using Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (NMR), and gel permeation chromatography (GPC) analysis. The average molecular weight (Mw) of TRPR was detected as 560 g/mol. Artificial neural network (ANN) modeling was designed with three inputs (pressure, temperature, and terpene/NR ratio) and four outputs (reaction yield, acid value, saponification value, and softening point). The highest TRPR yield was obtained with a terpene/NR ratio of (1/2) at 80 degrees C and under 3 atm. The lowest acid and saponification values were calculated as 90.54 and 100.11 mg KOH/g, respectively. The softening point of TRPR reached 80 degrees C and it was suggested for use in the paper, ink, and adhesive industries. image
  • Küçük Resim Yok
    Öğe
    From Wood Rosin to a Green Compatibilizer: Enhancing the Performance of Natural Fiber/Polypropylene Composites
    (Wiley, 2025) Genc, Merve; Ertas, Murat
    In this study, we investigate whether fortified rosin with maleic anhydride (FRMA), synthesized from renewable wood rosin, can effectively compatibilize polypropylene/natural fiber (PP/NF) composites. The morphology, thermal stability, mechanical, chemical, and physical properties of the prepared composites were tested using several characterization methods. Thermal results revealed that the degree of crystallinity (Xc) of the PP/NF composite improved by a 2% increase with the addition of FRMA. HDT (heat deflection temperature) analysis demonstrated that the HDT of PP/NF composites increased (about 12%) to 116.4 omicron C when FRMA was added, compared with the composites without FRMA content. Moreover, the presence of FRMA in composites with 20 wt. % and 30 wt. % NF filler ratios increased the flexural strengths by 8% and 6%, respectively. The highest flexural strength was found in the 77PP/20NF/3FRMA composite as 30.4 MPa. Similarly, the presence of FRMA increased the hydrophobicity in composites with 20 wt. % and 30 wt. % NF filler ratios. Based on the findings, FRMA synthesized in this study could be used as a green compatibilizer in different industrial fields for the preparation of immiscible polymer blends. Furthermore, this study highlighted the potential of wood rosin beyond its conventional applications.