Article
Engineering, Multidisciplinary
Enrico Carmeli, Federico di Sacco, Giuseppe Portale, Dario Cavallo, Roland Kadar, Antonis Gitsas, Thomas Gkourmpis, Davide Tranchida
Summary: Understanding the solidification behavior of iPP composites with reduced graphene oxide nanoplatelets is crucial for their widespread use. This study investigated the crystallization behavior of these composites and found that the nucleation efficiency of the graphene filler is high even at low concentrations, with a significant impact on the crystallization transition.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Thermodynamics
J. M. Mata-Padilla, C. A. Avila-Orta, A. Almendarez-Camarillo, J. G. Martinez-Colunga, E. Hernandez-Hernandez, V. J. Cruz-Delgado, P. Gonzalez-Morones, S. G. Solis-Rosales, J. A. Gonzalez-Calderon
Summary: The non-isothermal crystallization behavior of isotactic polypropylene (iPP)/copper nanocomposites with different mass percentages of copper nanoparticles was studied using differential scanning calorimeter (DSC). The results showed that while the incorporation of nanoparticles affected the lamellas size and X-ray diffraction intensity, it did not influence the spherulite size. Additionally, the presence of copper nanoparticles in the iPP matrix significantly increased the thermal conductivity of the nanocomposites, accelerating the crystallization process.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
Pixiang Wang, Yifen Wang, Xueqi Wang, Yucheng Peng, Shaoyang Liu
Summary: The crystallization kinetics of isotactic homopolymer polypropylene (HPP), impact copolymer polypropylene (ICPP), and their composites were investigated. The Avrami-Jeziorny and Mo models accurately described the crystallization process. The nucleation activity and crystallization rate were influenced by the content of ICPP, with the highest rate observed at 60% ICPP. The changes in chain mobility and crystal-crystal interactions accounted for the fluctuations in crystallization rate and activation energy.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Multidisciplinary
Enrico Carmeli, Sara Ottonello, Bao Wang, Alfred Menyhard, Alejandro J. Muller, Dario Cavallo
Summary: A more quantitative method to study the efficiency of nucleating agents promoting polypropylene beta-phase is reported in this study. The findings show that the nucleating efficiency scale for alpha-phase is DCHT > TATA > QQ, while for beta-phase it is DCHT > QQ.
Review
Polymer Science
Leire Sangroniz, Bao Wang, Yunlan Su, Guoming Liu, Dario Cavallo, Dujin Wang, Alejandro J. Muller
Summary: This study investigates fractionated crystallization, where multiple separated crystallization events are observed in semicrystalline polymers when the number of microdomains is significantly higher than the available number of heterogeneities. The origins of fractionated crystallization effects and their impact on nucleation and crystallization kinetics are discussed.
PROGRESS IN POLYMER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Munemichi Kawaguchi, Masayoshi Uno
Summary: In this study, the modeling of crystal growth behaviors in Na2O-2CaO-3SiO2 glass using 2D and 3D phase-field methods under periodic temperature conditions was performed. The 2D-PFM results showed good agreement with experimental data in terms of the temperature dependence of crystal growth rates on the surface and in the volume. The 3D-PFM simulation successfully reproduced the single-nucleated and multinucleated crystal growth behaviors observed experimentally.
Article
Chemistry, Multidisciplinary
Munemichi Kawaguchi, Masayoshi Uno
Summary: In this study, we used two- and three-dimensional phase-field methods to model crystal growth on the surface and in the volume of Na2O-2CaO-3SiO(2) glass. The results showed that the two-dimensional phase-field method accurately reproduced the temperature dependence of surface and volume crystal growth rates. The three-dimensional phase-field method simulated both single- and multinucleated crystal growth behaviors and was in good agreement with experimental results.
Article
Polymer Science
Jiugeng Cheng, Zhenxing Zhong, Yuan Lin, Zhaohui Su, Chunyu Zhang, Xuequan Zhang
Summary: This work investigates the miscibility behavior of high molecular weight isotactic poly(1-butene) and isotactic polypropylene blends using AFM-IR technique. It is found that the two polymers partially miscible under certain conditions, and the content of polypropylene in each phase can be determined using a quantitative analysis method. The phase separation kinetics and phase diagram of the blends were studied, suggesting a lower critical solution temperature-type phase behavior of PB/PP blends.
Article
Materials Science, Composites
Saeideh Hojatzadeh, Farshad Rahimpour, Esmail Sharifzadeh
Summary: This study evaluated the isothermal crystallization kinetics of high-density polyethylene (HDPE) nanocomposites containing different weight percentages of pure and surface-modified silica nanoparticles. The results showed that the crystallization temperature influenced the nucleation mechanism and the crystallization rate. The addition of compatible/un-compatible silica nanoparticles significantly affected the isothermal crystallization process, and surface modification had a positive effect on the crystallization rate of the nanoparticles.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Multidisciplinary
Alex Yi-Tsung Lu, Amy T. Kan, Mason B. Tomson
Summary: The mechanism of barium sulfate deposition in pipelines has been a subject of contradiction, with recent studies proposing nucleation in the boundary layer as a new explanation, supported by experiments.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Multidisciplinary
Marloes H. Bistervels, Marko Kamp, Hinco Schoenmakers, Albert M. Brouwer, Willem L. Noorduin
Summary: This study demonstrates light-controlled nucleation and growth for self-assembling composites, showing precise control over the process by optimizing photogeneration, diffusion, reaction, and precipitation of the carbonate species. The ability to induce nucleation and sculpt the contours and features of the growing composite according to micrometer-defined light patterns opens up previously unimaginable opportunities for guiding self-assembly into functional materials.
ADVANCED MATERIALS
(2022)
Article
Polymer Science
Sichun Wang, Tao Zhang, Lu Zhang, Duo Liu, Xinyu Liu, Junhang Li, Hongxiang Li, Qiang Zhang, Yanchun Han
Summary: This study reports a method to obtain continuous fiber networks by controlling solution nucleation and crystallization rates, and adding ethylene glycol to the polymer solution can significantly improve charge transport performance.
Article
Polymer Science
Enrico Carmeli, Seif Eddine Fenni, Maria Rosaria Caputo, Alejandro J. Muller, Davide Tranchida, Dario Cavallo
Summary: This study presents a novel approach for investigating surface-induced nucleation in polymer blends, focusing on the crystallization behavior of dispersed polyethylene droplets in a polypropylene matrix. It was found that increasing the lamellar thickness of polypropylene enhanced the crystallization kinetics of polyethylene, leading to the formation of a transcrystalline layer at the interface. The nucleating effect of polypropylene on polyethylene was estimated to be around 140%, indicating epitaxial growth as the mechanism of surface-induced nucleation in these blends.
Article
Chemistry, Multidisciplinary
Noriaki Kubota
Summary: This study proposes a new method for estimating primary nucleation rates from non-linear P-r(t) distribution data and extracts heterogeneous nucleation rates from literature data of P-r(t) distributions. The relevance of mononuclear-mode nucleation in small samples to polynuclear-mode nucleation in large industrial-scale crystallizers is discussed theoretically.
Article
Thermodynamics
Pratim Kumar Patra, Aanchal Jaisingh, Vishal Goel, Gurpreet Singh Kapur, Leena Nebhani
Summary: This paper investigates the isothermal and non-isothermal crystallization behavior of polypropylene and its blends, showing that PEI can promote the crystallization of PP when blended with reactive co-agent PP-g-MA. The Avrami equation confirms three-dimensional crystal growth in all samples, while Jeziorny-Avrami and Mo theories suggest enhanced crystallization rate in the compatibilized blend of PP/1PP-g-MA/1PEI.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Multidisciplinary
Ran Li, Wei Nie, Wen Yang
MATERIALS RESEARCH EXPRESS
(2019)
Article
Engineering, Environmental
Wentao Hao, Jian Xu, Ran Li, Xiangzheng Zhao, Longzhen Qiu, Wen Yang
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Chemistry, Applied
Wen Yang, Ran Li, Caiping Fang, Wentao Hao
PROGRESS IN ORGANIC COATINGS
(2019)
Article
Materials Science, Multidisciplinary
Qiangying Wang, Guo Sun, Shiming Wei, Wentao Hao, Wen Yang
Summary: A film-type detector was fabricated from hyperbranched fluorescent poly(amido amine) (HPAMAM) and polymethyl methacrylate (PMMA) through electrospinning to detect cobalt ion in aqueous solution with high sensitivity and selectivity. The fluorescence quenching obeys the Stern-Volmer law in a linear range of 1-50 mu M, providing an effective route to fabricate film-type detectors from nonconjugated fluorescent polymers.
Article
Engineering, Environmental
Qiangying Wang, Guo Sun, Qingdong Tong, Wen Yang, Wentao Hao
Summary: This paper summarizes the research progress on fluorine-free superhydrophobic coatings, focusing on nonfluorinated polydimethylsiloxane (PDMS) fabrication methods and their pros and cons. The study indicates that these methods are applicable not only to PDMS, but also to coatings composed of other non-fluorinated compounds.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Polymer Science
Wen Yang, Qingdong Tong, Yuqing Li, Qianqian Li, Qiannan Zheng, Wentao Hao
Summary: This study successfully fabricates multifunctional films with self-healing, responsiveness, and electromagnetic interference shielding abilities. The films demonstrate autonomous recovery of electrical conductivity and mechanical strength, and exhibit dual responsiveness to temperature and strain. Additionally, the films possess excellent electromagnetic interference shielding effectiveness, making them highly promising for commercial applications.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Polymer Science
Zhongming Lv, Wentao Hao, Feiyun Xiao, Pin Chen, Zhengshi Liu, Yong Wang
Summary: Soft actuators are important for soft robotics, and particle reinforcement can improve their performance. This study investigates soft pneumatic actuators made of silicone rubber with embedded ultrahigh molecular weight polyethylene particles through experiments and simulations.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Tianyu Chen, Gewen Xu, Junjie Bao, Yiping Huang, Wen Yang, Wentao Hao
Summary: Hydrogel wound dressings incorporating Bletilla Striata Polysaccharide (BSP) have potential in clinical treatment due to their high hemostatic ability, absorption capacity, softness, non-toxicity, and non-irritating properties. This study proposes a simple one-pot method for preparing hydrogel wound dressings by mixing BSP aqueous solution with isocyanate terminated polyurethane. The resulting hydrogels can rapidly absorb exudates, retain them effectively, remove radicals, promote blood coagulation, and exhibit good biocompatibility. Most importantly, the hydrogels show excellent ability in promoting wound healing.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Engineering, Biomedical
Tianyu Chen, Xiaoyan Guo, Yiping Huang, Wentao Hao, Sunyan Deng, Gewen Xu, Junjie Bao, Qiansheng Xiong, Wen Yang
Summary: Polysaccharides are widely used in biomedicine due to their unique biological activity, low costs, and easy accessibility. In this study, Bletilla striata polysaccharide (BSP) was integrated into waterborne polyurethane (WPU) to prepare a series of hydrogels. These hydrogels showed good performance in terms of compressive strength, water absorption and retention, and biocompatibility. The WPUB hydrogel dressings demonstrated excellent ability in promoting wound healing, with reduced wound surface area and improved skin quality compared to conventional gauze.
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
(2023)
Article
Thermodynamics
Wentao Hao, Qiannan Zheng, Xiang Zhang, Yuqing Li, Longzhen Qiu, Hongbo Lu, Wenping Wang, Wen Yang
Summary: In order to improve the flame retardancy and water repellency of PLA fabrics, co-electrospinning of PLA with DiDOPO was performed. The experimental results showed that DiDOPO provided good protection for PLA fabrics, exhibiting better flame retardancy compared to bulk PLA during combustion. Moreover, the electrospun PLA/DiDOPO fabrics also showed improved water repellency and increased strength and toughness.
THERMOCHIMICA ACTA
(2023)
Article
Engineering, Electrical & Electronic
Wei Nie, Qingdong Tong, Qianqian Li, Wen Yang, Wentao Hao
Summary: The multifunctional EMI shielding composite fabricated from waste rock wool, converted into valuable EMI material through a simple process, shows excellent EMI shielding performance, hydrophobicity, thermal insulation, and fire-retardant ability. This strategy not only solves the issue of waste rock wool pollution but also promotes the large-scale manufacturing of multifunctional EMI shielding materials.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Nutrition & Dietetics
Lei Sang, Lin Tang, Wen-Tao Hao, Peng Cui
CURRENT TOPICS IN NUTRACEUTICAL RESEARCH
(2019)
