Review
Materials Science, Composites
Viswanath Ganapathy, Gunasegeran Muthukumaran, P. Edwin Sudhagar, Ahmad Rashedi, Mohd Nor Faiz Norrrahim, Rushdan Ahmad Ilyas, Kheng Lim Goh, Mohammad Jawaid, Jesuarockiam Naveen
Summary: Nanocellulose, a green material with abundant resources, remarkable performance, and sustainability, has attracted considerable attention. This review article explores the impact of nanocellulose on the mechanical properties of nanocellulose-based composites and discusses its applications in fiber-reinforced polymer composites.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Forkan Sarker, M. D. Zulhash Uddin, Kazi Sowrov, Md Shakirul Islam, Amran Miah
Summary: Sodium bicarbonate treatment can enhance the mechanical properties of jute fibers and the interfacial adhesion of jute/epoxy composites. The removal of hemicellulose and reduction of lignins in fibers by this treatment contribute to the improvements in tensile properties and flexural properties of the composites.
POLYMER COMPOSITES
(2022)
Article
Engineering, Manufacturing
Shailesh Alwekar, Pritesh Yeole, Vipin Kumar, Ahmed Arabi Hassen, Vlastimil Kunc, Uday K. Vaidya
Summary: The properties of LFT materials are significantly influenced by processing techniques, such as extrusion and extrusion compression molding, which affect fiber distribution and orientation. Tecnogor composites, with aligned fibers, show superior mechanical performance compared to random LFT composites.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Materials Science, Composites
Hong Chang Han, Xiao Lu Gong, Ming Zhou, Chen Li, Heng Bin Yang
Summary: The study focused on the impact of silane modification of hemp fiber on the UV aging of reinforced polypropylene composites, with different silane agents showing varying effects on the degradation and mechanical properties of the composites.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Textiles
Hongguang Wang, Kainan Yang, Zhongzhi Guan, Shansong Gao
Summary: In this study, epoxy resin-based composite plates were prepared using flax fiber fabric modified by 1% NaOH solution and glass fiber fabric through hand layup molding. The influence of fiber orientation angle, stacking sequence, and hybrid ratio on the mechanical properties and fatigue behavior of the hybrid composites was investigated through orthogonal tests. The results showed that fiber orientation angle had the most significant effect on the properties of the composites, followed by hybrid ratio, while the impact of stacking sequence was negligible. The SEM images revealed interfacial debonding, pull-out, and brittle fracture of flax fiber as the main failure modes under tensile load, and pull-out, folds, buckling, and debonding and delamination of glass fiber as the primary failure modes under flexural load.
FIBERS AND POLYMERS
(2023)
Article
Polymer Science
Zhenhua Wang, Weili Feng, Jiachen Ban, Zheng Yang, Xiaomin Fang, Tao Ding, Baoying Liu, Junwei Zhao
Summary: In this study, sisal-fiber-reinforced polypropylene (PP/SF) flame-retardant composites were prepared using the two-step melt blending method. An intumescent flame retardant (IFR) composed of silane-coated ammonium polyphosphate (Si-APP) and pentaerythritol (PER) was used. The PP/SF composite prepared by PP/SF secondary blending with IFR showed excellent flame-retardant performance, with a limited oxygen index of about 28.3% and passing the UL-94 V-0 rating (3.2 mm) in the vertical combustion test. The mechanical properties of the composites prepared using three different mixing processes were similar.
Article
Materials Science, Multidisciplinary
Emese Pregi, David Kun, Gabor Faludi, Janos Moczo, Bela Pukanszky
Summary: Flax and lignin were used to prepare hybrid polypropylene composites. The mechanical properties and structures of the composites were characterized using tests and microscopy. Quantitative analysis and modeling were used to study the effects of different components on the properties of the composites.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Composites
Xueqi Wang, Pixiang Wang, Shaoyang Liu, Justin Crouse, Douglas J. Gardner, Brian Via, Tom Gallagher, Thomas Elder, Yucheng Peng
Summary: The mechanical properties of homopolymer polypropylene (HPP) composites can be significantly improved by incorporating spray-dried cellulose nanocrystal (SDCNC) particles, which contribute to enhanced tensile modulus of elasticity (MOE), flexural MOE, and impact strength. The formation of a mechanical interlocking network between SDCNC particles and HPP enhances the impact strength of the composites. Additionally, SDCNC particles can act as heterogeneous nucleating agents, promoting the crystallization process of HPP. SDCNC particles also slightly enhance the thermal stability of the HPP composite.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Bernhard Ungerer, Ulrich Mueller, Maximilian Pramreiter, Enrique Herrero Acero, Stefan Veigel
Summary: This study found that the crimp of yarns had a significant impact on the strength properties of composite specimens, with a higher crimp ratio leading to decreased performance. Applying prestress to crimped yarns was proven to be an effective way to achieve straight alignment in the loading direction.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Composites
Zhe Yang, Zhongsen Zhang, Yu Long, Kunkun Fu, Yan Li
Summary: A novel process optimization was proposed to manufacture large-tow flax fiber prepreg filaments for 3D printing components. Untwisting of flax yarns generated by rotational vibration produced a dispersed yarn structure, and the structural design of yarns further enhanced the impregnation time. The mechanical test results showed significant improvement in the tensile properties of CFRTP composites using filaments consisting of multiple fine flax yarns and the aid of rotational vibration.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Luis Javier Cruz-Riano, Leidy Johana Quintero-Giraldo, Jaime Alexis Garcia-Guzman, Alejandro Alcaraz-Zapata, Eugenia del Socorro Gonzalez-Castrillon, Jairo Alexander Osorio-Saraz
Summary: This study focused on obtaining short bamboo fibers through various extraction methods, with steam explosion equipment producing fibers with superior mechanical properties. By using a 3(k) factorial experiment design, the best natural composite material was determined by combining 50% w/w fiber and 4% w/w coupling agent, leading to a 322% increase in elasticity modulus compared to the polymer matrix.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Composites
Oskars Platnieks, Sabine Briede, Liga Grase, Vijay Kumar Thakur, Sergejs Gaidukovs
Summary: This study prepared a hemp fiber-reinforced composite from bio-based components, using hemp nanopaper and acrylated epoxidized soybean oil or acrylated rapeseed oil. The impregnation process was examined in detail, and it was found that rapeseed oil had excellent fiber surface wettability and a significant difference in viscosity compared to soybean oil. The rapeseed oil composite with 50% hemp loading achieved good mechanical properties and showed potential to replace epoxy/paper composite insulators.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Jolien Van der Putten, Attupurathu Vijayan Rahul, Geert De Schutter, Kim Van Tittelboom
Summary: This study evaluates the influence of different polypropylene fiber lengths and dosages on the workability, pore structure, mechanical, and shrinkage behavior of 3D printable cementitious materials. The findings show that a higher fiber volume decreases workability and increases flexural strength, with M6 fibers being more effective. In addition, the addition of fibers results in a marginal increase in total porosity and a reduction in total free shrinkage, particularly with M3 fibers.
Article
Polymer Science
Agnese Abele, Remo Merijs-Meri, Madara Ziganova, Zanda Iesalniece, Ivan Bochkov
Summary: The aim of this study was to evaluate the potential use of agricultural biomass residues for reinforcing recycled polymer matrices. Recycled polypropylene and high-density polyethylene composites filled with three types of biomass residues were tested. The addition of sweet clover straws, buckwheat straws, or rapeseed straws increased the stiffness and strength of the materials. The reinforcing effect was more pronounced with increasing fiber content, particularly in the flexural test for buckwheat straw composites.
Article
Engineering, Chemical
Yarrapragada K. S. S. Rao, Ayaz Ahmad, Sudheer Kumar Battula, Reem Mohammed Alharbi, Neveen Abdel-Raouf, Ibraheem Borie M. Ibraheem, Essam Nageh Sholkamy, B. M. Bala, I. Jenish
Summary: The mechanical characteristics of hybrid polypropylene composites can be improved by adjusting the fiber loading and ratio. Different composites with varying fiber loading were created using hot press technique, and it was found that fiber loading affects tensile strength while fiber ratio influences flexural modulus and hardness.
ADVANCES IN POLYMER TECHNOLOGY
(2022)
Article
Polymer Science
Jun Yang, Fushi Li, Chong Guan, Xiangming Xu, Lin Zhong, Yunbao Gao, Yuanyuan Han, Nan Yan, Guiyan Zhao, Wei Jiang
Summary: By studying the effect of the modulus ratio on the brittle-ductile transition of PP/POE blends, it was found that a clear transition occurred at a modulus ratio of 10. Additionally, the microstructure also had an impact on the BDT.
Article
Polymer Science
Chi Li, Jia-Ning Zhang, Jing Jin, Wei Jiang
Summary: PEGylation is a widely used method for constructing protein resistance surfaces. In this study, PEG layers grafted with mPEG-SH and SH-PEG-SH of different molecular weights were evaluated for lysozyme adsorption. The resistance of lysozyme was found to be dependent on grafting density and chain conformation. Long-chain PEG was not effective in forming a dense layer to resist protein, while short-chain PEG with linear and looped structures improved protein resistance by increasing the grafting density. The conformation of the substrate was found to play a crucial role in the refilling process and subsequent protein adsorption. The study provides new insights into the impact of topology on protein resistance and suggests potential applications in biomedical fields.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Xin Yu, Jinlan Li, Nan Yan, Wei Jiang
Summary: This study reports a method for the quaternization-assisted hierarchical assembly of gold nanoparticles (AuNPs) tethered with polystyrene (PS) and quaternized poly-(2-vinylpyridine) (P2VP) ligands into controllable superstructures in emulsion droplets. The quaternization reaction between bromoalkyl molecular additives (e.g., C (n) H2n+1Br) and P2VP ligands increases the hydrophilicity of quaternized P2VP ligands, triggering the interfacial instability of emulsion droplets and achieving the continuous transformation of generated superstructures. The degree of quaternization can be easily tuned by the content of additives and the length of the alkyl chain, providing a unique and promising approach for preparing controllable superstructures and functional materials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Polymer Science
Yanqiu Du, Yunhan Zhang, Jing Jin, Shiyan Xiao, Haojun Liang, Wei Jiang
Summary: We developed a novel approach to self-locking colloidal suprastructures by taking advantage of the topology of polymer brushes on nanoparticles. Looping polymer brushes significantly improve the structural stability of the suprastructures. Experimental and simulation results revealed that the suprastructures achieve stability through a self-locking mechanism by forming folded entanglement between looped polymer molecules. The stabilized suprastructures can withstand harsh environments and the interparticle spacing can be modulated by controlling polymer conformations in an aqueous solution.
Article
Polymer Science
Xuan Feng, Nan Yan, Jing Jin, Wei Jiang
Summary: The disassembly process of amphiphilic AB block copolymers in selective solvents was investigated using molecular dynamic simulation. The disassembly is controlled by thermodynamic processes that depend on the instability of the system. Bx can be converted to Ax in A2BxB18-x diblock copolymers by external stimuli, and the instability induced by Bx conversion is a function of x. Increasing x leads to the disassembly of the initial vesicles into various structures. In addition, the Bx conversion rate and the amount of converted polymer chains also affect the disassembly process.
Article
Multidisciplinary Sciences
Dongbao Yao, Yunhan Zhang, Xiang Zhou, Xiaoyun Sun, Xiaoyu Liu, Junxiang Zhou, Wei Jiang, Wenqiang Hua, Haojun Liang
Summary: This study presents a simple and effective method to achieve catalytic assembly of DNA-functionalized colloidal nanoparticles in a far-from-equilibrium system. A removable molecule called catassembler acts as a catalyst to rectify imperfect linkages and help the system escape from metastability. By changing the design of the catassembler, the catalytic efficiency can be effectively improved. Different ordered architectures can be easily produced using this tractable catalytic assembly approach.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Multidisciplinary
Xuan Yue, Jinlan Li, Nan Yan, Wei Jiang
Summary: Recently, the spontaneous organization of two types of nanoparticles into binary nanoparticle superlattices has been widely studied. The distributions and arrangements of the nanoparticles can be precisely controlled by adjusting the gap size between neighboring nanoparticles, allowing for the design of new functional materials and devices.
Article
Polymer Science
Jiayu Yu, Jianing Zhang, Jing Jin, Wei Jiang
Summary: A pathway-dependent strategy is proposed in this study to achieve morphological regulation from microcapsules to microbowls for single-stranded DNA polyadenine. This strategy involves gradual addition and shaking of n-butanol as well as osmotic re-equilibrium to overcome energy barriers and evade metastable states. By following this strategy, small microcapsules are formed, expanded, and then transformed into microbowls through buckling and evaporation of n-butanol.
Article
Polymer Science
Wei Bao, Yunbao Gao, Fushi Li, Jianing Zhang, Jing Jin, Baijun Liu, Nan Yan, Mingyao Zhang, Wei Jiang
Summary: In this article, the impact of the mechanical properties of the core material on the toughness of polypropylene (PP) composites toughened by PE-EPR core-shell particles was studied. It was found that the higher the yield stress of the PE cores, the higher the impact toughness of the composites. Furthermore, excess PE content led to a transition from ductile to brittle fracture, which was determined by the modulus of the core material rather than its yield stress.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Jie Cui, Wenyu Zhang, Yuanyuan Han, Yingying Wang, Wei Jiang
Summary: In this study, the self-assembly behavior of a tadpole-like giant molecule constructed from a hydrophobic nanoparticle and a diblock copolymer chain was investigated. By tuning the solvent properties, different novel structures were obtained in addition to conventional ordered aggregates. These findings provide new insights into the self-assembly behavior of giant molecules and offer useful guidance for experimental morphology regulation.
Article
Chemistry, Multidisciplinary
Xuejie Liu, Nan Yan, Jing Jin, Yanqiu Du, Wei Jiang
Summary: By precisely controlling the interfacial interaction between colloidal nanoparticles and the oil/water interface, we successfully assembled Mackay icosahedral and regular tetrahedral colloidal clusters from gold nanoparticles. The transformation from Mackay icosahedral clusters to regular tetrahedral clusters was achieved by increasing the proportion of hydrophilic P2VP ligands on the surface of gold nanoparticles. The formation mechanism of these regular polyhedral colloidal clusters was also revealed, showing that it is determined by both entropy and interfacial free energy.
Article
Polymer Science
Xingchan Du, Jie Cui, Yuanyuan Han, Fushi Li, Hongwen Liang, Jing Jin, Wei Jiang
Summary: Impurities in monomers have a significant impact on polymerization reactions and resulting polymers. The presence of CC and AC impurities reduces the degree of polymerization and prolongs the polymerization time, while also affecting the molecular weight distribution and polymerization rate.
Article
Materials Science, Biomaterials
Min Du, Jianing Zhang, Jing Jin, Wei Jiang
Summary: This study modified SEBS to prepare the SEBS-PDA-PLQ antibacterial surface, which solves bacterial infections related to medical devices. The surface almost completely suppresses the growth of bacteria under laser irradiation and exhibits excellent hydrophilicity, antiprotein adsorption ability, chemical stability, and biocompatibility.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Article
Chemistry, Physical
Tongwei Chen, Yunhan Zhang, Shiyan Xiao, Dongbao Yao, Wei Jiang, Haojun Liang
Summary: Obtaining a perfectly structured thin block copolymer film through self-assembly is challenging due to the system's tendency to be trapped in a metastable state. By employing dissipative particle dynamics (DPD), we investigated the self-assembly of AB symmetric diblock copolymers in a thin film. The introduction of a small molecule C as the third component allowed the system to avoid the metastable state, thereby correcting imperfect structures and promoting the formation of ordered structures. Similar to the role of a catalyst in catalytic chemistry, molecule C facilitated the assembly into an ordered structure while having less involvement within the polymer phase. Furthermore, simulation results highlighted the significance of the content of molecule C and its repulsive interactions with blocks A and B in effectively promoting assembly into ordered structures.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Jinlan Li, Xin Yu, Jianing Zhang, Nan Yan, Jing Jin, Wei Jiang
Summary: This paper studied the entropy-driven formation of binary superlattices assembled from polymer-tethered nanorods and nanospheres. The results indicated that the conformational entropy of the polymer chains and the mixing entropy of the nanorods and nanospheres are two parameters that determine the formation of binary superlattices.
CHEMICAL COMMUNICATIONS
(2023)
