Article
Engineering, Electrical & Electronic
Yingwei Ouyang, Amir Masoud Pourrahimi, Ida Ostergren, Marcus Mellqvist, Jakob Anevall, Azadeh Soroudi, Anja Lund, Xiangdong Xu, Thomas Gkourmpis, Per-Ola Hagstrand, Christian Muller
Summary: The study investigated the impact of different amounts of styrenic copolymer on the thermomechanical properties, electrical and thermal conductivity of LDPE and PP blends. Adding 5wt% of the copolymer reduces the required PP content and enhances performance consistency.
Article
Materials Science, Multidisciplinary
Ehsan Pesaranhajiabbas, Akhilesh Kumar Pal, Arturo Rodriguez-Uribe, K. Amar Mohanty, Manjusri Misra
Summary: This study presents the first-ever scientific report on the melt blending of two tough home-compostable bioplastics, BioPBSA and PBAT. The morphology of the blends changed as the PBAT concentration increased, and rheological studies indicated an increase in viscosity and storage modulus, demonstrating improved compatibility between the bioplastics. The appropriate blends show promise as sustainable alternatives for flexible packaging applications.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Physical
Veronika Gajdosova, Beata Strachota, Adam Strachota, Danuse Michalkova, Sabina Krejcikova, Petr Fulin, Otakar Nyc, Adam Brinek, Marek Zemek, Miroslav Slouf
Summary: This study reports a reproducible preparation and characterization of highly homogeneous thermoplastic starch/pol(epsilon-caprolactone) blends with minimal thermomechanical degradation and co-continuous morphology. These blends are suitable for biomedical applications, specifically for the local release of antibiotics from the starch phase.
Article
Agricultural Engineering
Amirreza Zabihi, Mohammad Fasihi
Summary: The study compared the preparation and characterization of polymer blends containing two types of polystyrene and thermoplastic corn starch. The addition of a low volume of polystyrene increased the ultimate tensile strength of TPS by more than 200%. The Tg of the TPS-rich phase was unexpectedly lower than that of pure TPS.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Polymer Science
Mahshid Maroufkhani, AliAsghar Katbab, Hasti Bizhani, Jinwen Zhang
Summary: In this study, the effects of sulfur content on supertough dynamically vulcanized blends (DV) of PLA and NBR were investigated. It was found that the addition of sulfur resulted in a more uniform structure of the rubber phase in the blends, leading to a significant increase in impact strength.
Article
Polymer Science
Mehdi Haji Abdolrasouli, Ebrahim Jalali Dil, Jamshid Khorshidi Mal Ahmadi
Summary: The study investigates the phase coarsening behavior of two polymer blends during thermal annealing, revealing that the phase size increases linearly with time and eventually approaches a finite size. A new empirical model developed in this work shows good agreement with the results, indicating its potential in analyzing phase coarsening behavior of co-continuous polymer blends.
IRANIAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Jiali Chen, Chenyan Rong, Taotao Lin, Yihang Chen, Jiali Wu, Jichun You, Hengti Wang, Yongjin Li
Summary: This study demonstrates the successful construction of a fully biodegradable polymer blend with improved comprehensive performance through the use of interfacial stereocomplex crystallites. The novel compatibilizer greatly enhances the overall properties of the material and significantly stabilizes the morphology.
Article
Polymer Science
Juan Bai, Huijie Pei, Xingping Zhou, Xiaolin Xie
Summary: Poly(butylene adipate-co-terephthalate) (PBAT) is widely used in the production of biodegradable films due to its high elongation, flexibility, and processability. However, its high cost compared to traditional plastics such as polyethylene has led to research on reducing PBAT cost through blending with thermoplastic starch (TPS) using reactive epoxy compatibilizer (REC) and two-step extrusion. The results showed that REC improved compatibility and mechanical properties of PBAT/TPS blends, with blends obtained through two-step extrusion showing a bicontinuous phase structure and excellent performance even with high TPS contents.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Chih-Jen Chang, Manikandan Venkatesan, Chia-Jung Cho, Ping-Yu Chung, Jayashree Chandrasekar, Chen-Hung Lee, Hsin-Ta Wang, Chang-Ming Wong, Chi-Ching Kuo
Summary: Starch-based biodegradable foams were synthesized using industrial starch and supercritical CO2. The foam properties were improved by modifying the surface of thermoplastic starch and optimizing the foam-forming process. The resulting composite foam with PBAT exhibited good flexibility and low foam density.
Article
Polymer Science
Tianqi Liang, Qiwen Huang, Zhaoyang Wei, Weiwei Lei, Jun You, Jie Liu, Xiaoming Ren, Qunchao Zhang, Guohua Hu, Dean Shi
Summary: In order to achieve stable co-continuous morphology in immiscible polymer blends, the compatibilizer should reduce interfacial tension, promote the formation of flat interfaces, and not hinder phase coalescence. This study investigates the relationship between the morphology of compatibilized PS/PA6/SMA blends and the structures of in-situ formed SMA-g-PA6 copolymers, as well as processing conditions. It is found that co-continuous structures are observed in PS/PA6/SMA28 blends and SMA28-g-PA6 copolymers, while sea-island morphologies are obtained in SMA11 systems.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Maya Pishvar, Mehrad Amirkhosravi, Ica Manas-Zloczower
Summary: In this study, TPU-PTFE nanocomposites with improved thermomechanical properties were successfully made by fibrillation of micron-sized PTFE particulates inside the TPU matrix. PTFE forms a fibrillary network inside the TPU matrix, which enhances the creep behavior, thermal stability, storage modulus, and reduces the thermal expansion coefficient of the nanocomposites. The glass transition temperature of nanocomposites with 10 wt % PTFE shows two transitions, while a single peak is observed for the neat TPU.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
M. G. Anagha, Tuhin Chatterjee, Francesco Picchioni, Kinsuk Naskar
Summary: The effects of electron beam radiation on thermoplastic elastomers based on SEBS/TPU and SEBS-g-MA/TPU were evaluated. Both systems showed the presence of three-dimensional cross-linked networks after irradiation. SEBS-g-MA/TPU exhibited improved tensile strength and interfacial adhesion, while SEBS/TPU showed reduced tensile strength with increased radiation dose. The blends also demonstrated improvements in thermal stability, rheological properties, and morphological characteristics.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Mehrad Amirkhosravi, Liang Yue, Tianxiong Ju, Ica Manas-Zloczower
Summary: The study improved the high-temperature mechanical performance of TPU films using a simple annealing process while maintaining strength properties at room temperature. Annealing not only enhanced the creep behavior and storage modulus of the films, but also discussed its effect on structural evolution.
Article
Engineering, Environmental
Marina Fernandes Cosate de Andrade, Hugo Campos Loureiro, Claire Isabel Grigoli de Luca Sarantopoulos, Ana Rita Morales
Summary: This study evaluated the influence of polyethylene glycol on the compatibility of PBAT and WPIT blends, showing partial miscibility between the materials. The addition of WPIT affected the crystallinity and mechanical properties of PBAT in the blends. Additionally, barrier properties were also impacted with WPIT reducing oxygen permeability but increasing vapor water permeability in the blends.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Materials Science, Multidisciplinary
Ryohei Hosoya, Makiko Ito, Ken Nakajima, Hiroshi Morita
Summary: This study investigates the domain morphology of SIS triblock copolymers blended with different types of styrene copolymers and examines the correlation between structure and mechanical properties under uniaxial elongation. The results show that the structural factors affecting stress magnitude are different between different copolymer models and vary with strain.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Materials Science, Composites
Osayuki Osazuwa, Alexandros A. Vasileiou, Marianna Kontopoulou, Aristides Docoslis
POLYMER COMPOSITES
(2017)
Article
Materials Science, Composites
Kyle Petrie, Marianna Kontopoulou, Aristides Docoslis
POLYMER COMPOSITES
(2016)
Article
Engineering, Chemical
P. Tiwary, H. Gui, P. L. Ferreira, M. Kontopoulou
INTERNATIONAL POLYMER PROCESSING
(2016)
Article
Geosciences, Multidisciplinary
Lindsay Waffle, Laurent Godin, Lyal B. Harris, M. Kontopoulou
JOURNAL OF STRUCTURAL GEOLOGY
(2016)
Article
Polymer Science
Praphulla Tiwary, Chul B. Park, Marianna Kontopoulou
EUROPEAN POLYMER JOURNAL
(2017)
Article
Polymer Science
Kyle G. Petrie, Osayuki Osazuwa, Aristides Docoslis, Marianna Kontopoulou
Article
Chemistry, Multidisciplinary
Praphulla Tiwary, Marianna Kontopoulou
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2018)
Article
Biochemistry & Molecular Biology
Salim Gopi, Marianna Kontopoulou, Bruce A. Ramsay, Juliana A. Ramsay
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2018)
Article
Mechanics
Praphulla Tiwary, Marianna Kontopoulou
JOURNAL OF RHEOLOGY
(2018)
Article
Polymer Science
Karolina Dawidziuk, Heather Simmons, Marianna Kontopoulou, J. Scott Parent
Article
Polymer Science
Heather Simmons, Marianna Kontopoulou
POLYMER DEGRADATION AND STABILITY
(2018)
Article
Engineering, Chemical
Ashley Clarke, Alexandros A. Vasileiou, Marianna Kontopoulou
POLYMER ENGINEERING AND SCIENCE
(2019)
Article
Chemistry, Physical
Cameron S. Giglio, Osayuki Osazuwa, Marianna Kontopoulou, Aristides Docoslis
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2019)
Article
Materials Science, Composites
Quang Binh Ho, Osayuki Osazuwa, Rebecca Modler, Mark Daymond, Mark T. Gallerneault, Marianna Kontopoulou
COMPOSITES SCIENCE AND TECHNOLOGY
(2019)
Proceedings Paper
Physics, Applied
Ashley Clarke, Alexandros A. Vasileiou, Marianna Kontopoulou
PROCEEDINGS OF PPS-32: THE 32ND INTERNATIONAL CONFERENCE OF THE POLYMER PROCESSING SOCIETY
(2017)
Article
Polymer Science
Yuanzhang Jiang, Xuyi Wang, Yanting Han, Dakai Gong, Yingchun Gu, Lin Tan
Summary: In this study, FeCl3 and poly(acrylic acid) (PAA) were doped into waterborne polyurethanes (WPUs) to create multifunctional materials with self-healing and antimicrobial properties. WPU/Fe/PAA-5.5, containing 5.5 wt % PAA, exhibited excellent mechanical properties, strong self-healing capabilities, and an impressive antimicrobial rate of over 90%. These supramolecular films were also highly recyclable through hot-pressing.
Article
Polymer Science
Longyu Tian, Min Wang, Guangming Liao, Baoliang Liu, Sujuan Zhang, Yucheng Sun, Zhen Meng, Jintao Zhang, Zaijun Lu
Summary: Two kinds of benzoxazine monomers were synthesized and used to prepare polybenzoxazine anion exchange membranes (AEMs) with quaternary ammonium functionalization. The LQPBZ AEM exhibited better ion conductivity and alkaline stability.
Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Polymer Science
Zhike Li, Anyu Luo, Rui Zhou, Xin Li, Haiyan Li
Summary: A novel high temperature resistance IL@SiO2 nanocapsules were successfully prepared and their friction and wear properties in PA6 composites were studied. The addition of IL@SiO2 nanocapsules reduced the friction coefficient and wear rate without affecting the mechanical properties of PA6. The synergy between the IL core and SiO2 wall in the nanocapsules improved the self-lubricating performance of the PA6 composites.
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Article
Polymer Science
Wei-Chung Ke, Jin-Wei Lin, Manohar Reddy Busireddy, Yueh-Hsing Lee, Jiun-Tai Chen, Chain-Shu Hsu
Summary: This study introduces a crosslinkable monomer, TAIC, to synthesize three crosslinked polyimide films, which exhibit improved thermal, mechanical, and dielectric properties. The introduction of TAIC enhances the tensile strength, reduces the dielectric constant and dielectric loss, and decreases the coefficient of thermal expansion of the polyimide films.
Article
Polymer Science
Alex Kwasi Kumi, Ruiling Fan, Ye Chen, Yumei Zhang
Summary: The difference in leaching of amylopectin from cellulose/amylopectin/1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) blends during regeneration in water and aqueous ethanol has been studied. Molecular dynamics simulations showed that the dissolution and regeneration mechanisms of amylopectin in [Bmim][Cl] are similar to cellulose in ionic liquids. Water regeneration leads to weak electrostatic interactions, resulting in high leaching of amylopectin. In contrast, ethanol-water interactions enhance electrostatic interactions among amylopectin chains, limiting amylopectin leaching in aqueous ethanol.
Article
Polymer Science
Xi Zeng, Junwei Zhou, Junbiao Peng, Chunsheng Zhang, Danling Wang, Yihu Song, Qiang Zheng
Summary: This study utilizes an oligomer deep eutectic solvent (DES) based on polyethylene glycol to regulate the vulcanization kinetics of rubber. The results show that the DES can accelerate vulcanization at low temperatures without affecting the crosslinking density and Mullins effect.
Article
Polymer Science
Qianqian Yue, Yongfei Peng, Xingjian Liu, Aihua He, Huarong Nie
Summary: The addition of metal deactivators can effectively suppress the aging of TBIR, prolong its lifespan, and have no negative effects on its physical and processing properties. These research findings are of great importance for improving the stability and aging resistance of polymers.
Article
Polymer Science
J. Gomez-Caturla, J. Ivorra-Martinez, R. Tejada-Oliveros, V Moreno, D. Garcia-Garcia, R. Balart
Summary: This work focuses on the development of environmentally friendly PLA formulations by using different esters derived from geraniol as plasticizers. The results show that these esters have good compatibility with PLA, and they can effectively enhance the elongation and plasticity of PLA, reduce its glass transition temperature, and slightly improve its water absorption capabilities.
Article
Polymer Science
Dandan Li, Zhaohui Lu, Zhao Ke, Ke Xu, Fengna Dai, Youhai Yu, Guangtao Qian, Chunhai Chen
Summary: In this study, cross-linked PI aerogel membranes with low dielectric constant and high moisture resistance were prepared by co-polymerization and scraping coating technology. The incorporation of fluorinated blocks and benzimidazole ring structures resulted in novel PI aerogel membranes with fascinating dielectric properties and outstanding moisture resistance.
Article
Polymer Science
Zhaoyang Chu, Qing Zhang, Haihua Luo, Han Zhou, Fapei Zhang, Wei Chen, Wenhua Zhang
Summary: Multi-physical fields solution processing strategy is a universal and facile method for preparing various conjugated polymer films and high-performance devices. In this study, we employed a combined microfluidic flow and ultrasonication strategy (FU) for processing CP solutions, and found a pronounced synergetic effect in promoting the pre-ordering of chains in solution. The conformation order and anisotropy of the solution were revealed through various characterizations. A non-classical nucleation model for polymer crystallization in non-equilibrium solution processing was confirmed. The roles of microfluidic flow and ultrasonication in chain aggregation and crystallization were addressed through multi-physical simulations. Compared to pristine solutions, the FU strategy showed improved solution anisotropy and crystallization kinetics, resulting in higher crystallinity in films and increased mobilities in OFET devices. The FU processing strategy provides a universal approach for regulating chain conformation and aggregation in conjugated polymer solutions.