Article
Polymer Science
Masafumi Yamato, Ayano Imai, Hiroyoshi Kawakami
Summary: This study investigated the thermal behavior of a polymer with intrinsic microporosity (PIM-1) membrane using thermomechanical analysis and differential scanning calorimetry. It was found that the coefficient of thermal expansion (CTE) remained constant below 110 degrees C, with inflection points observed between 120-150 degrees C. The CTE after the inflection point was significantly influenced by the fabrication conditions and thermal history. Cooperative molecular motion was observed below 200 degrees C.
Article
Polymer Science
Foong Han Lyn, Chin Ping Tan, Ruzniza Mohd Zawawi, Zainal Abedin Nur Hanani
Summary: This study shows that ionic crosslinking significantly improves the barrier and mechanical properties of chitosan and chitosan/graphene oxide composite films, indicating their potential as food packaging materials.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Dinar Balkaev, Vadim Neklyudov, Valentina Starshinova, Mikhail Stolov, Liliya M. Amirova, Anna Ziyatdinova, Rustem R. Amirov
Summary: This study demonstrates that the dicalcium salt of HEDP can be used as a nucleating agent for iPP, showing increased crystallinity and flexural modulus. The synthesis of this novel nucleating agent is simple, environmentally friendly, and cost-effective.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Polymer Science
Quoc-Thai Pham, Yu-Huan Jheng, Dah-Shyang Tsai, Juin-Yih Lai, Chien-Chieh Hu, Chorng-Shyan Chern
Summary: Two solid acrylonitrile-based polymer electrolytes (SPE1-21 and SPE2-31) were compared in this study. It was found that SPE1-21 had lower ionic conductivity and transference number compared to SPE2-31, but had higher oxidation potential and better interfacial stability against Li metal. Additionally, SPE1-21 exhibited better cycling performance and capacity retention.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Zongling Yang, Lin Luo, Fangyu Fan, Jingcheng Su, Chongyin Zhou, Huan Kan
Summary: The study demonstrated that adding 5% nano-SiO2 improved the barrier properties of the composite film, while adding 7% nano-SiO2 significantly enhanced the mechanical properties of the film. Nano-SiO2 also increased the melting temperature of the composite film, and through spray drying encapsulation, the stability of walnut oil microcapsules was improved by incorporating nano-SiO2 into the wall material.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Engineering, Environmental
Hajo Bitter, Susanne Lackner
Summary: Differential scanning calorimetry (DSC) can be used to quantify microplastics, with improved detection accuracy and limits achieved through defined pre-heating and cooling steps. The method is shown to be feasible for environmental samples, with quantification limits and accuracy demonstrated for various polymers such as PE, PET, PP, and PA6.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Ibolya Zita Papp, Angel Alegria, Zoltan Konya, Akos Kukovecz
Summary: This study investigates the effect of depositing a semiconductor layer on ITO coated PET films on the basic thermomechanical properties of the substrate material. The findings indicate that although the thermomechanical properties are impacted to some extent, the sensor substrate material remains usable.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Applied
M. Sobanwa, T. J. Foster, Gleb Yakubov, N. J. Watson
Summary: The study investigated the effects of different hydrocolloids on the rheological and thermal properties of collagen pastes. It was found that the addition of methylcellulose, hydroxypropylmethylcellulose, high and medium molecular weight guar gum increased the storage modulus of collagen pastes, while the addition of sodium carboxymethylcellulose increased the loss modulus. The hydrocolloid additives also decreased the elastic properties of the pastes.
FOOD HYDROCOLLOIDS
(2022)
Article
Polymer Science
Hari P. V. S. Prashanth, Elammaran Jayamani, Kok Heng Soon, Md. Rezaur Rahman, Muhammad Khusairy Bin Bakri
Summary: This study demonstrated the characterization of a flax fiber reinforced polypropylene-strontium titanate composite and dielectric study for low-k dielectric applications. The composite showed higher thermal stability, increased dielectric constants with the addition of strontium titanate, and reduced dielectric losses at higher frequencies with the inclusion of natural fibers and ceramic.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Environmental Sciences
Lucas Kurzweg, Sven Schirrmeister, Maurice Hauffe, Yasmin Adomat, Martin Socher, Kathrin Harre
Summary: This study presents a potential method for comprehensive microplastic monitoring in river sediments, combining electrostatic separation, density separation, and differential scanning calorimetry. The method allows for efficient processing of large sample masses and robust results, overcoming current limitations in microplastic analysis. It can be applied for monitoring microplastics in highly polluted sediments.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Oncology
Gabriela Schneider, Alagammai Kaliappan, Taylor Q. Nguyen, Robert Buscaglia, Guy N. Brock, Melissa Barousse Hall, Crissie DeSpirito, Daniel W. Wilkey, Michael L. Merchant, Jon B. Klein, Tanya A. Wiese, Hiram L. Rivas-Perez, Goetz H. Kloecker, Nichola C. Garbett
Summary: Lung cancer is the most common malignancy worldwide and improving screening strategies is crucial due to limitations of current methods. Differential scanning calorimetry (DSC) shows promise in diagnosing lung cancer patients and correlating with survival rates, suggesting it as a potentially accurate, non-invasive, radiation-free screening tool.
Article
Chemistry, Physical
Davide Bochicchio, Laura Cantu, Maria Vittoria Cadario, Leonardo Palchetti, Francesca Natali, Luca Monticelli, Giulia Rossi, Elena Del Favero
Summary: Synthetic plastic oligomers can interact with living organisms in various ways, and their effects on cell structure and dynamics are still not well understood. Research has shown that doping doses of polystyrene oligomers can alter the thermal properties of lipid membranes and modify their mechanical properties. This calls for a systematic and interdisciplinary assessment of the interaction mechanisms between synthetic polymers and cell membranes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Polymer Science
Yong-xuan Chen, Dong-shan Zhou, Wen-bing Hu
Summary: Differential scanning calorimetry (DSC) is an efficient tool for characterizing thermal properties and investigating thermal reactions of materials. Recent developments in DSC technique have greatly expanded the measurement range for polymer characterization. Temperature-modulated DSC (TMDSC) and fast scanning chip-calorimetry (FSC) are significant advances in DSC technology, introducing scanning rate perturbation and ultra-fast heating and cooling rates for measurements on micro- and nanogram scale samples.
ACTA POLYMERICA SINICA
(2021)
Article
Polymer Science
Alasseri Nihmath, Manammel Thankappan Ramesan
Summary: The polymer blend composites reinforced with hydroxyapatite nanoparticles showed enhanced mechanical properties, oil resistance, hardness, and AC conductivity. The addition of nanoparticles also decreased the diffusion rate of the blend composites with an anomalous trend in the diffusion mechanism. Among the blend composites, the sample with 7 phr of HA exhibited good oil and solvent resistance, increased AC conductivity, and improved mechanical properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Saeed Dolatshah, Shervin Ahmadi, Amir Ershad-Langroudi, Hedieh Jashni
Summary: This study investigated the synergistic effect of different chain extenders and catalysts on the rheological behavior of PET, finding that a combination of PMDA and PENTA at 1.5% and 0.5% respectively resulted in the best rheological properties for modified PET. Additionally, DBTDL acted as an accelerator for chain extension reaction, improving the rheological properties of PET by increasing the chain extending rate. Thermal properties of modified PET were also studied using differential scanning calorimetry.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)