Article
Thermodynamics
Giselly M. G. Farias, Pankaj Agrawal, Ruth B. L. Hanken, Jeane P. de Araujo, Akidauana D. B. de Oliveira, Tomas J. A. de Melo
Summary: The concentration of ethylene vinyl acetate (EVA) and the vinyl acetate (VA) content in EVA have significant effects on the properties of bio-based high-density polyethylene (BioPE)/EVA blends. Increasing EVA concentration decreases the crystallinity of BioPE, while blends with higher VA content exhibit higher impact strength.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Polymer Science
Derek E. Huang, Anthony P. Kotula, Chad R. Snyder, Kalman B. Migler
Summary: Motivated by the issue of brittle mechanical behavior in recycled blends of HDPE and iPP, this study investigates the composition dependence of their crystallization kinetics using optical microscopy, rheo-Raman, and DSC. The results show that the crystallization behavior of iPP varies with blend composition, with three distinct two-phase morphologies observed. The crystallization temperature of iPP decreases sharply with increasing HDPE composition in the HDPE droplet regime, while it is delayed but shows little change in the onset temperature in cocontinuous morphologies. In the iPP droplet regime, the two components crystallize nearly concurrently. Rheological measurements support these findings. DSC analysis suggests that the enthalpy of crystallization of the blends is less than the weighted values of the individual components.
Article
Materials Science, Composites
Mario A. B. S. Nunes, Bruno R. de Matos, Glaura G. Silva, Edson N. Ito, Tomas J. A. de Melo, Guilhermino J. M. Fechine
Summary: The addition of carbon-based fillers in co-continuous polymer blends can lead to improved rheological and electrical properties, with a balance between processability and performance. The proper selection of nanofillers and controlled dispersion can enhance the conductivity levels achieved in the blends.
POLYMER COMPOSITES
(2021)
Article
Polymer Science
Nga Thi-Hong Pham
Summary: The study investigated the mechanical properties of LDPE/EVA blends with different EVA-28 content. Results showed that the tensile and flexural strength decreased with increasing EVA-28 content, while hardness decreased. However, adding EVA-28 improved the elongation at break, with the highest value achieved in the blend containing 10% EVA-28.
Article
Chemistry, Multidisciplinary
Damien Rasselet, Monica Francesca Pucci, Anne-Sophie Caro-Bretelle, Jose-Marie Lopez-Cuesta, Aurelie Taguet
Summary: This study reveals the potential of achieving unique morphologies by adding fumed silica into PLA/PA11 blends, with A200 silica localized in the PA11 phase and R805 silica at the PLA/PA11 interface. Frequency sweep tests confirmed the high dispersion of A200 in PLA and R805 in PA11.
Article
Materials Science, Composites
Mohammad Razavi-Nouri, Masoud Salavati
Summary: The influence of multi-walled carbon nanotubes (MWCNTs) on the thermal, mechanical, wetting properties, and rheological behavior of poly(ethylene-co-vinyl acetate) (EVA)/acrylonitrile-butadiene rubber nanocomposites was investigated. It was found that the addition of MWCNTs improved the solid surface free energy, work of adhesion, spreading coefficient, and Girifalco-Good's interaction parameter, while reducing the contact angle and interfacial free energy. The nanocomposite with 1 wt% nanofillers exhibited the highest tensile strength and toughness. Furthermore, the relaxation ratio and relaxation rate index decreased with increasing carbon nanotubes (CNTs) concentration. The increment in MWCNTs loading led to an increase in the yield stress of the molten materials according to a quadratic equation. The analysis also showed that the crystallization process was triggered at a slightly higher temperature with the introduction of CNTs, while the melting point and nucleation rate decreased noticeably with the increase in nanofillers content.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Multidisciplinary
He Li, Yong-Sheng Liu, Yan-Song Liu, Qing-Feng Zeng, Jing-Jing Liang
Summary: The study successfully fabricated alumina ceramics by adding vinyl acetate as a bridge in the alumina slurry, and systematically investigated the effects on microstructure and mechanical properties. The optimal vinyl acetate content of 10 wt% resulted in sintered ceramics with satisfactory properties.
Article
Chemistry, Physical
Stephen G. Giteru, M. Azam Ali, Indrawati Oey
Summary: The high incompatibility of bio-based materials can be effectively improved by modifying surface residues and using pulsed electric fields processing. However, optimization is necessary based on pH values. Excessive system perturbation and high electric field intensity can hinder gel formation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Seong Baek Yang, Dae Won Jeong, Jungeon Lee, Sabina Yeasmin, Chang-Kil Kim, Jeong Hyun Yeum
Summary: In this study, PVA/P(MMA-MAA) blend films were prepared for the first time using the saponification method in a heterogeneous medium. The conversion of PVAc/PMMA into PVA/P(MMA-MAA) films was confirmed by analyzing surface morphology and characteristics, as well as the improvement in thermal properties. The results suggest that blend films based on the hydrophilic/hydrophobic strategy have potential as promising medical materials.
Article
Polymer Science
Azamat Slonov, Ismel Musov, Azamat Zhansitov, Azamat Khashirov, Aslanbek Tlupov, Khasan Musov, Elena Rzhevskaya, Irina Fomicheva, Andrey Potapov, Svetlana Khashirova
Summary: The use of polyolefin blends, such as polyethylene (PE) and ethylene-vinyl acetate copolymer (EVA), in 3D printing can help reduce the problems associated with high crystallization rates, such as shrinkage and warpage. Increasing the EVA content in the blend can decrease the crystallization rate of PE and improve the impact strength and processability of the printed objects.
Article
Materials Science, Composites
Nai-Yi Huang, Cheng-Chien Wang, Chuh-Yung Chen
Summary: By synthesizing and characterizing nanocomposite membranes of ethylene vinyl acetate (EVA) and layered double hydroxide (LDH), it was found that 12AA-LDH has better adsorption performance for CO2 than neat LDH, enhancing membrane separation performance. Additionally, 12AA-LDH shows high potential for use as an additive in CO2 capture membranes.
POLYMER COMPOSITES
(2021)
Article
Polymer Science
Seong Baek Yang, Mohammad Rezaul Karim, Jungeon Lee, Jeong Hyun Yeum, Sabina Yeasmin
Summary: Novel poly(vinyl alcohol)/poly(vinyl butyral-vinyl alcohol) films with improved hydrophobicity were prepared by saponification of poly(vinyl acetate)/poly(vinyl butyral) blend films. The saponification process was confirmed by various analysis techniques. The hydrophobicity of the films increased with increasing poly(vinyl butyral) content. The saponified films exhibited improved mechanical properties and unique surface characteristics. These films have potential applications in biomaterials, filters, and medical devices.
Article
Engineering, Chemical
Saeed Dolatshah, Shervin Ahmadi, Amir Ershad Langroodi, Aida Alavi
Summary: The effects of two chain extenders on the performance of PET/CNT nanocomposites were investigated, and it was found that the chain extenders could improve the rheological behavior, thermal characteristics, and crystallization rate of PET, and also affect the electrical properties of the nanocomposites.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Construction & Building Technology
Runzhuo Cao, Junfen Yang, Guoxin Li, Mengdie Niu
Summary: This study focuses on the influence of EVA and SBR on the sulfuric acid resistance of OPC-SAC repair mortar. The results showed that EVA and SBR can improve the mortar's resistance to sulfuric acid attack and have a regulating effect on the pore structure.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Polymer Science
Choon K. Chai
Summary: Statistically designed blown film experiments were conducted to investigate the effects of molecular weight distribution and processing conditions on film properties. The rheological characteristics provide insight into the complex interactions between molecular and processing parameters. By relating the ratio of polymer largest molecular relaxation time to a process time, a master curve can be obtained for the physical properties of films blown under similar processing conditions. The influence of thermo-mechanical deformation history on crystallisation during blown film processing can be highlighted with complementary experiments using Small Angle Light Scattering patterns.
Article
Engineering, Environmental
Abbas Kebritchi, Mehdi Nekoomansh, Fereidoon Mohammadi, Hossein Ali Khonakdar
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2018)
Article
Materials Science, Textiles
Hamed Hajimirzababa, Ramin Khajavi, Mohammad Mirjalili, Mohammad KarimRahimi
JOURNAL OF THE TEXTILE INSTITUTE
(2018)
Article
Materials Science, Composites
Milad Nonahal, Mohammad Reza Saeb, Seyed Hassan Jafari, Hadi Rastin, Hossein Ali Khonakdar, Farhood Najafi, Frank Simon
POLYMER COMPOSITES
(2018)
Article
Materials Science, Composites
Farzaneh Memarian, Abdolhossein Fereidoon, Morteza Ghorbanzadeh Ahangari, Hossein Ali Khonakdar
POLYMER COMPOSITES
(2018)
Article
Materials Science, Composites
Serveh Abdollahi, Morteza Ehsani, Jalil Morshedian, Hossein Ali Khonakdar, Uta Reuter
POLYMER COMPOSITES
(2018)
Article
Polymer Science
Elham Aram, Morteza Ehsani, Hossein Ali Khonakdar, Seyed Hassan Jafari, Serveh Abdollahi
POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING
(2018)
Article
Materials Science, Textiles
Senlong Yu, Hengxue Xiang, Jialiang Zhou, Zhe Zhou, Meifang Zhu
FIBERS AND POLYMERS
(2018)
Article
Environmental Sciences
M. A. Radi, N. Nasirizadeh, M. Mirjalili, M. Rohani Moghadam
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2019)
Article
Chemistry, Multidisciplinary
A. Almasian, Gh. Chizari Fard, M. Mirjalili, M. Parvinzadeh Gashti
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2018)
Article
Materials Science, Composites
Hamid Reza Gholshan Tafti, Peiman Valipour, Mohammad Mirjalili
POLYMER COMPOSITES
(2018)
Article
Polymer Science
Kousha Abbas Banaie, Mohammad Mirjalili, Reza Eslami-Farsani
POLYMER DEGRADATION AND STABILITY
(2018)
Article
Engineering, Environmental
Zahra Esvandi, Rauf Foroutan, Mohammad Mirjalili, George A. Sorial, Bahman Ramavandi
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2019)
Article
Materials Science, Characterization & Testing
Fatemeh Jamili, Mohammad Mirjalili, Hasan Ali Zamani
POLYMERS & POLYMER COMPOSITES
(2019)
Article
Chemistry, Multidisciplinary
S. S. Yasini Ardakani, R. Abghari, M. Mirjalili
PHYSICAL CHEMISTRY RESEARCH
(2019)
Article
Chemistry, Physical
Samane Parsian, Sheila Shahidi, Mohammad Mirjalili, Mahmood Ghoranneviss
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
(2018)
