Article
Materials Science, Multidisciplinary
Rebecca Mort, Victor S. Cecon, Paul Mort, Kelsey McInturff, Shan Jiang, Keith Vorst, Greg Curtzwiler
Summary: The potential of using fly ash as a filler in post-consumer recycled polyethylene to maximize landfill diversion is evaluated. It is found that using fly ash as a filler can increase landfill diversion, reduce costs, and offset the cost of recycling by blending with a low cost filler. Adding compatibilizer additives can improve the impact strength of the fly ash composites. The results show that fly ash can be added up to 10% in recycled polyethylene without significantly affecting physical properties.
FRONTIERS IN MATERIALS
(2022)
Article
Polymer Science
Saul Sanchez-Valdes
Summary: The use of HDPE-g-DMAE as a compatibilizer in HDPE/rHDPE/nanoclay composites improves mechanical properties, enhances adhesion between recycled and virgin polymer phases in the blend, and increases interactions between the compatibilizer and hydroxyl groups on the clay surface as well as oxidized groups in the recycled polymer.
IRANIAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Beibei Sun, Li Dang, Qiuyan Bi, Rujie Li, Qiuhui Gong, Zhihao Wan, Shiai Xu
Summary: In this study, maleic anhydride-modified polymers were used as bulking agents to improve the processing and mechanical properties of highly filled composites. The addition of the compatibilizer significantly enhanced the mechanical properties of the composites, but had a negative impact on their flame retardancy.
Article
Chemistry, Physical
Sergey V. Panin, Dmitry G. Buslovich, Yuri V. Dontsov, Svetlana A. Bochkareva, Lyudmila A. Kornienko, Filippo Berto
Summary: The paper aimed to improve the functional properties of composites based on UHMWPE by loading with reinforcing fibers, determining the optimal composition for 3D printing. Experimentally, it was found that UHMWPE loaded with 17% HDPE-g-VTMS could bind glass fillers effectively, optimizing mechanical and tribological properties. Optimization of key parameters like processing passes and aspect ratio of glass fillers achieved uniform filler distribution and desired mechanical properties.
Article
Polymer Science
Raziyeh S. Mohammadi, Ali M. Zolali, Jung-Hyun Kim, Amirjalal Jalali, Chul B. Park
Summary: The melt strength of linear low density polyethylene (LLDPE) can be enhanced through the inclusion of high aspect ratio polyamide (PA) fibers, and the efficiency of this method can be improved by adding compatibilizer to the blends. The presence of compatibilizer in the blends results in finer fibers and superior foaming ability, with comparable rheological responses achieved in both fibrillated blends with and without compatibilizer.
Article
Physics, Applied
Chang-Mou Wu, Tien-Lai Chu
Summary: In this study, antibacterial LDPE composites were prepared using a silver-based antibacterial agent and a compatibilizer. The addition of compatibilizer improved the thermal properties of the composites. The antibacterial activity of the composites was enhanced by the addition of the silver-based antibacterial agent and compatibilizer.
MODERN PHYSICS LETTERS B
(2023)
Article
Chemistry, Applied
Tongchang Xiao, Lin Wan, Fuwei Dong, Zihao Shang, Ziwen Cui, Liping Wei, Yingjun Liu, Aihua Du
Summary: Improving wet traction, reducing abrasion, and decreasing rolling resistance in tread rubber is challenging but desired. In this study, we synthesized epoxidized solution polymerized styrene butadiene rubber (ESSBR) with different epoxy levels and used them as interfacial compatibilizers to enhance silica dispersion and silica/rubber interfacial interaction. By incorporating 20 phr of ESSBR-15%, wet grip improved by 40% while DIN abrasion and rolling resistance decreased by 38% and 21% respectively without sacrificing mechanical properties.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2023)
Article
Materials Science, Characterization & Testing
X. Colom, F. Carrillo-Navarrete, M. R. Saeb, M. Marin, K. Formela, J. Canavate
Summary: This study tested the use of devulcanized EPDM as a recycled component in elastomeric composites, with three matrices (NR, SBR, and EPDM rubber). The results showed that adding a certain amount of devulcanized EPDM improved the mechanical properties and thermal stability of the samples, but adding excessive amounts resulted in a decrease in performance. Further analysis revealed the formation of microagglomerates of devulcanized EPDM inside the samples, with NR and SBR showing stronger connections to the matrices compared to EPDM. This led to a relative decrease in mechanical properties and thermal stability for EPDM compared to NR and SBR.
Article
Materials Science, Characterization & Testing
Alireza Kaboorani, Narges Gray, Yahya Hamzeh, Ali Abdulkhani, Younes Shirmohammadli
Summary: The study demonstrated that LDPE/TPS composites containing cellulose nanocrystals (CNCs) and compatibilizer (CA) exhibited superior mechanical properties, vapor barrier performance, and resistance to biotic attacks. The addition of CNCs improved the interaction between LDPE and TPS, suggesting that CA could potentially be replaced by CNCs without sacrificing composite performance. Enhancing properties through CNCs addition could be an effective and sustainable approach towards reducing global LDPE utilization in the production of LDPE/TPS composites.
Article
Materials Science, Multidisciplinary
Nuno Gama, Artur Ferreira, Ana Barros-Timmons, Dmitry Evtuguin
Summary: The study focused on the sustainability of 3D-printed objects by using pine bark particles as filler reinforcement for polyamide 6, modified through a two-step chemical process. The resulting composites showed a significant increase in Young's modulus and maximum stress with the introduction of 10% modified biomass, making them suitable for 3D printing due to improved compatibility with the matrix and easier processing.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Polymer Science
Anesh Manjaly Poulose, Hamid Shaikh, Arfat Anis, Abdullah Alhamidi, Nadavala Siva Kumar, Ahmed Yagoub Elnour, Saeed M. Al-Zahrani
Summary: In this study, polypropylene composites with strontium aluminate-based fillers were prepared and their auto-glowing properties were examined. The intensity of the phosphorescence emission and decay was found to be proportional to the filler content. The fillers decreased the overall crystallinity of the composites without affecting the melting and crystallization temperature values. The thermal stability of the composites was slightly improved with the fillers, but the mechanical properties were decreased.
Article
Green & Sustainable Science & Technology
Chengqian Wang, Jun Mei, Long Zhang
Summary: This study focuses on producing high-added-value biomass-derived composites by chemically coupling post-consumer plastics with agricultural and forestry wastes. The addition of a compatibilizer enhances the mechanical properties and thermal stability of the materials, promoting the recycling economy and achieving recyclable utilization of harmful wastes.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Polymer Science
Jian Wang, Da Wang, Qianchao Mao, Jinnan Chen
Summary: The mechanical properties of self-reinforced polymer composites (SrCs) produced by fabric insert injection molding can be improved by changing the injection temperature and parameters. Ultra-high molecular weight polyethylene (UHMWPE) fabric was used as reinforcement and high-density polyethylene (HDPE) melt was used as matrix to prepare UHMWPE/HDPE two-component SrCs. The results showed that increasing the temperature improved the impregnation of the fabric and increased the tensile strength and modulus of the composites.
Article
Polymer Science
Prashant Gangwani, Mitjan Kalin, Nazanin Emami
Summary: In this study, the effectiveness of compatibilizers in blends and composites produced using a solvent manufacturing process was evaluated. The findings revealed that while the compatibilizers consistently enhanced the properties of PPS-based compositions, their utility is constrained to less complex compositions. For fibrous-reinforced PPS-PTFE composites, the improvement in performance does not justify the presence of compatibilizers. In contrast, for UHMWPE compositions, compatibilizers demonstrated negligible or even detrimental effects, particularly in reinforced UHMWPE. Overall, the epoxy-based compatibilizer Joncryl stands out as the only effective option for enhancing mechanical performance. Thermal and chemical characterization indicated that the compatibilizers function as chain extenders and enhance the fiber-matrix interface in PPS-based compositions, while they remain inactive in UHMWPE-based compositions.
Article
Polymer Science
V. O. Kudyshkin, N. I. Bozorov, N. Sh. Ashurov, N. R. Ashurov, S. Sh. Rashidova
Summary: Grafted copolymers of low-molecular-weight polyethylene with acrylic acid were utilized as compatibilizers to improve the distribution of starch particles in the polyethylene matrix, thereby affecting the supramolecular structure and physical and mechanical properties of the polymer composition. This was determined through the use of atomic force microscopy, X-ray diffraction analysis, and physical and mechanical tests.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Erol Yildirim, Shermin S. Goh, He-Kuan Luo, Hongmei Jin, Gang Wu, Teck Leong Tan, Zicong Marvin Wong, Jianwei. Xu, Shuo-Wang Yang
Summary: This study investigates the polymerization mechanisms of pyrrole on Ti3C2 MXene surfaces and in between MXene interlayers with different terminations through first-principles calculations. Key factors for the oxidant-free polymerization were identified, including the configuration of surface hydrogen-bonded pyrrole, surface acidity, confinement effect, and charge transfer between MXene surfaces and pyrrole monomers. By controlling these factors, covalently bonded conducting organic molecules/polymers can be designed on or in between MXene interlayers for electronic applications, providing a general mechanistic understanding and guideline for other possible in situ polymerizations on and in between two-dimensional MXene interlayers.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Polymer Science
Sultan Taskaya Aslan, Eda Alemdar Yilmaz, Tugba Haciefendiog, Yasemin Arslan Udum, Levent Toppare, Erol Yildirim, Ali Cirpan
Summary: A series of donor-acceptor alternative polymers with 2D-BDT and 1D-BDT as donors and quinoxaline as acceptor were successfully synthesized by Stille coupling reactions. The different structures showed varying effects on the optical properties of the polymers, with selenophene-containing polymers exhibiting lower oxidation and reduction potentials and more pronounced red-shifts in absorption onset wavelength. Kinetic studies revealed significant optical contrast in the bipolaron region for all polymers, with the P3-based solar cell achieving the highest efficiency.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Pelin Altay, Erol Yildirim, Nevin Cigdem Gursoy, Peter J. Hauser, Ahmed El-Shafei
Summary: This article presents a study on a novel and sustainable cationic bleach activator for cotton bleaching. The activator demonstrates high efficiency and reduced damage to cellulose chains at lower temperatures.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Umut Aydemir, Esma Ugur, Cagdas Ermis, Fatma Nur Aydemir, Erhan Ozdemir, Sreeparna Banerjee, Erol Yildirim, Akin Akdag, Irem Erel-Goktepe
Summary: A polymer carrier for boron delivery agent was prepared using experimental and computational studies. The self-assembly of block copolymers and the construction of layer-by-layer microparticles were investigated. The results showed that the microparticles successfully delivered boron to cells with high stability.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Tugba Haciefendioglu, Erol Yildirim
Summary: This study models, analyzes, and compares over 50 different acceptor units using computationally extracted data from density functional theory. It finds that the structural properties of acceptor units have a dominant effect on their frontier electronic energy levels, particularly the dihedral angle between the acceptor, donor, and bridge units, bond order, and hyperpolarizability.
Article
Chemistry, Multidisciplinary
Ahmet Cetinkaya, S. Irem Kaya, Pelin Senel, Nejla Cini, Esen B. Atici, Sibel A. Ozkan, Mine Yurtsever, Aysegul Golcu
Summary: This study successfully achieved the high sensitivity, rapid, and precise detection of axitinib using a multiwalled carbon nanotube/iron(III) oxide nanoparticle-chitosan nanocomposite modified electrode. The developed modified electrode showed excellent electrocatalytic activity and demonstrated good applicability in tablet and serum samples.
Article
Nanoscience & Nanotechnology
Sunay Dilara Ekim, Gorkem Eylul Kaya, Murat Dastemir, Erol Yildirim, H. Tarik Baytekin, Bilge Baytekin
Summary: This study investigates the contact charging and charge decay behavior of polydimethylsiloxane doped with organic charge transfer cocrystals. The results show that the composites exhibit antistatic properties and the discharging propensity depends on the charge transfer degree within the complexes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Cagla Erkoc, Erol Yildirim, Mine Yurtsever, Oguz Okay
Summary: This study investigates the mechanical properties and influencing factors of hydrogels with different compositions of copolymer monomers through experimental verification and simulation calculations. The study finds that the hydrophobicity of the major copolymer monomer, ionic H-bonds, formation of strong H-bonded nanoaggregates, and stronger and higher inter-chain H-bonding and electrostatic interactions are critical factors determining the mechanical performance of the hydrogels.
Article
Materials Science, Multidisciplinary
Islam M. Abdellah, Erol Yildirim, Ahmed El-Shafei
Summary: Eight molecules with D-pi-D molecular motifs were designed as hole transporting materials for perovskite solar cells. The molecules exhibited low-cost, reproducible electrical and optical properties. Molecular modeling calculations were performed to predict their photophysical and photovoltaic properties. It was found that the core moieties and Schiff-base linkage extended conjugation greatly influenced the properties of the materials. HTMs incorporating SFO, SFM, and BP cores showed improved charge transport and stability, making them promising candidates for efficient solar cells.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Deniz Cakal, Elif Demir Arabaci, Erol Yildirim, Atilla Cihaner, Ahmet M. Onal
Summary: Side chains play significant roles in organic pi-conjugated materials, affecting not only solubility but also optical and electrochemical properties. This study focuses on the synthesis of new donor-acceptor-donor (D-A-D) conjugated monomers and their corresponding polymers with a side chain, fluorene, to examine the side chain effect. It is found that the TPD acceptor unit can be modified with various functional groups to maintain superior optoelectronic properties and introduce new functionalities. The Fl-appended monomers exhibit reasonable quantum yields and ambipolar character in their corresponding polymers.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2023)
Article
Chemistry, Organic
Deniz Cakal, Elif Demir Arabaci, Erol Yildirim, Atilla Cihaner, Ahmet M. Onal
Summary: Two novel donor-acceptor-donor monomers, T-PI and E-PI, were synthesized in this study by coupling phthalimide acceptor units with thiophene and ethylenedioxythiophene donor units. The effects of different donor groups and structural modifications on the optical and electrochemical properties of the monomers were investigated. The monomers exhibited intramolecular charge transfer bands and their oxidation and reduction potentials varied depending on the strengths of the donor and acceptor units. PI-based monomers showed different properties compared to TPD-based analogues due to the dihedral angle between the donor and PI acceptor units.
Article
Chemistry, Applied
Elif Demir Arabaci, Erol Yildirim, Ahmet M. Onal
Summary: A series of monomers containing different bridging atoms and donor units were synthesized using Stille coupling. The optical and electrochemical properties of the monomers and their corresponding polymers were investigated to study the effect of the donor units and bridging atoms. The results revealed that silafluorene-bearing monomers and polymers had slightly lower oxidation potentials and band gap values compared to fluorene-containing analogs. Additionally, polymers with EDOT as the donor unit exhibited lower band gap values compared to ProDOT-bearing polymers due to the twist structure of ProDOT, as confirmed by DFT calculations.
Article
Materials Science, Multidisciplinary
Umut Aydemir, Esma Ugur, Cagdas Ermis, Fatma Nur Aydemir, Erhan Ozdemir, Sreeparna Banerjee, Erol Yildirim, Akin Akdag, Irem Erel-Goktepe
Summary: This study presents a method for preparing a polymer carrier for a boron delivery agent through a combination of experimental and computational studies. Micelles with (B12 + QP2VP)-core and PEO-corona were formed by the electrostatic association between QP2VP and B12. The micelles were then utilized as building blocks to construct layer-by-layer microparticles, which successfully delivered boron to cells. This research contributes to a fundamental understanding of self-assembled structures and provides a basis for further development of boron-containing polymer vehicles for boron neutron capture therapy.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Organic
Zeynep Dilsad Susam, Bilge Deniz Ozcan, Enis Kurtkaya, Erol Yildirim, Cihangir Tanyeli
Summary: In this study, bifunctional quinine-derived organocatalysts were used to catalyze the asymmetric Friedel-Crafts/S(N)2 domino reaction, resulting in enantiomerically enriched products. Density functional theory calculations were also performed to explain the stereoselectivity of the products.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2022)
