1
|
Xu J, Cong Q, Zhao T. A Mesostructure Multivariant-Assembly Reinforced Ultratough Biomimicking Superglue. Macromol Rapid Commun 2024; 45:e2300484. [PMID: 37704216 DOI: 10.1002/marc.202300484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/12/2023] [Indexed: 09/15/2023]
Abstract
The imitation of mussels and oysters to create high-performance adhesives is a cutting-edge field. The introduction of inorganic fillers is shown to significantly alter the adhesive's properties, yet the potential of mesoporous materials as fillers in adhesives is overlooked. In this study, the first report on the utilization of mesoporous materials in a biomimetic adhesive system is presented. Incorporating mesoporous silica nanoparticles (MSN) profoundly enhances the adhesion of pyrogallol (PG)-polyethylene imine (PEI) adhesive. As the MSN concentration increases, the adhesion strength to glass substrates undergoes an impressive fivefold improvement, reaching an outstanding 2.5 mPa. The adhesive forms an exceptionally strong bond, to the extent that the glass substrate fractures before joint failure. The comprehensive tests involving various polyphenols, polymers, and fillers reveal an intriguing phenomenon-the molecular structure of polyphenols significantly influences adhesive strength. Steric hindrance emerges as a crucial factor, regulating the balance between π-cation and charge interactions, which significantly impacts the multicomponent assembly of polyphenol-PEI-MSN and, consequently, adhesive strength. This groundbreaking research opens new avenues for the development of novel biomimetic materials.
Collapse
Affiliation(s)
- Jin Xu
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun, Jilin, 130022, China
| | - Qian Cong
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun, Jilin, 130022, China
| | - Tiancong Zhao
- School of Chemistry and Materials, Department of Chemistry, Laboratory of Advanced Materials and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials (2011-iChEM), Fudan University, Shanghai, 200433, P. R. China
| |
Collapse
|
2
|
Khan RAA, Luo M, Alsaad AM, Qattan IA, Abedrabbo S, Hua D, Zulfqar A. The Role of Polymer Chain Stiffness and Guest Nanoparticle Loading in Improving the Glass Transition Temperature of Polymer Nanocomposites. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1896. [PMID: 37446412 DOI: 10.3390/nano13131896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/08/2023] [Accepted: 06/13/2023] [Indexed: 07/15/2023]
Abstract
The impact of polymer chain stiffness characterized by the bending modulus (kθ) on the glass transition temperature (Tg) of pure polymer systems, as well as polymer nanocomposites (PNCs), is investigated using molecular dynamics simulations. At small kθ values, the pure polymer system and respective PNCs are in an amorphous state, whereas at large kθ values, both systems are in a semicrystalline state with a glass transition at low temperature. For the pure polymer system, Tg initially increases with kθ and does not change obviously at large kθ. However, the Tg of PNCs shows interesting behaviors with the increasing volume fraction of nanoparticles (fNP) at different kθ values. Tg tends to increase with fNP at small kθ, whereas it becomes suppressed at large kθ.
Collapse
Affiliation(s)
- Raja Azhar Ashraaf Khan
- Department of Physics, Zhejiang Normal University, Jinhua 321004, China
- Department of Physics, Zhejiang University, Hangzhou 310027, China
| | - Mengbo Luo
- Department of Physics, Zhejiang University, Hangzhou 310027, China
| | - Ahmad M Alsaad
- Department of Physics, Jordan University of Science & Technology, P.O. Box 3030, Irbid 22110, Jordan
| | - Issam A Qattan
- Department of Physics, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi 127788, United Arab Emirates
| | - Sufian Abedrabbo
- Department of Physics, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi 127788, United Arab Emirates
| | - Daoyang Hua
- Department of Physics, Zhejiang University, Hangzhou 310027, China
| | - Afsheen Zulfqar
- Department of Physics, Zhejiang Normal University, Jinhua 321004, China
| |
Collapse
|
3
|
Fujii Y, Zhou S, Shimada M, Kubo M. Synthesis of Monodispersed Hollow Mesoporous Organosilica and Silica Nanoparticles with Controllable Shell Thickness Using Soft and Hard Templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4571-4582. [PMID: 36944197 DOI: 10.1021/acs.langmuir.2c03121] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Hollow mesoporous nanoparticles with controllable size (less than 100 nm) are desired as drug-delivery carriers. Herein, we report the synthesis of monodispersed hollow mesoporous organosilica (HMOS) and hollow mesoporous silica (HMS) nanoparticles using soft and hard templating methods. HMOS shells, with 1,2-bis(triethoxysilyl)ethane (BTEE) as the precursor and hexadecyltrimethylammonium bromide and sodium dodecyl sulfate (SDS) as the soft templates, were formed on monodispersed silica nanoparticles (SNPs), which were used as the hard templates. HMOS and HMS nanoparticles were obtained by removing the SNPs after three rounds of ammonia dialysis. The hollow size of HMOS can be tuned by changing the size of the SNPs. By using SNPs with a size of 36.5 nm, hollow spaces of approximately 20 nm connected the surface through narrow pores (<5 nm). Mesopores of approximately 12 nm were formed by the surfactant micelles. Additionally, the interparticle space in HMOS and HMS was approximately 12 nm. The shell thicknesses of HMOS and HMS could be tuned in the range of 5-9 nm by changing the BTEE amount. Moreover, the amount of surfactant used varied the porous structure. The HMOS with a thickness of 5 nm exhibited a Brunauer-Emmett-Teller (BET) surface area of 268 m2/g and a total pore volume of 1.14 cm3/g. Meanwhile, HMS demonstrated a BET surface area of 553 m2/g and a total pore volume of 1.82 cm3/g while maintaining a hollow structure. HMOS displayed a high loading capacity for ibuprofen (3009 mg/g), and its drug release system showed a sustained-release property. Therefore, the HMOS preparation using hard and soft templates proposed herein can control the hollow size and shell thickness for drug-delivery applications.
Collapse
Affiliation(s)
- Yuji Fujii
- Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashi-Hiroshima 739-8527, Hiroshima, Japan
| | - Shujun Zhou
- Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashi-Hiroshima 739-8527, Hiroshima, Japan
| | - Manabu Shimada
- Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashi-Hiroshima 739-8527, Hiroshima, Japan
| | - Masaru Kubo
- Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashi-Hiroshima 739-8527, Hiroshima, Japan
| |
Collapse
|
4
|
Hua DY, Khan RAA, Luo MB. Langevin Dynamics Simulation on the Diffusivity of Polymers in Crowded Environments with Immobile Nanoparticles. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Dao-Yang Hua
- Department of Physics, Zhejiang University, Hangzhou310027, China
| | | | - Meng-Bo Luo
- Department of Physics, Zhejiang University, Hangzhou310027, China
| |
Collapse
|
5
|
Kankala RK, Han YH, Xia HY, Wang SB, Chen AZ. Nanoarchitectured prototypes of mesoporous silica nanoparticles for innovative biomedical applications. J Nanobiotechnology 2022; 20:126. [PMID: 35279150 PMCID: PMC8917689 DOI: 10.1186/s12951-022-01315-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 02/17/2022] [Indexed: 02/06/2023] Open
Abstract
Despite exceptional morphological and physicochemical attributes, mesoporous silica nanoparticles (MSNs) are often employed as carriers or vectors. Moreover, these conventional MSNs often suffer from various limitations in biomedicine, such as reduced drug encapsulation efficacy, deprived compatibility, and poor degradability, resulting in poor therapeutic outcomes. To address these limitations, several modifications have been corroborated to fabricating hierarchically-engineered MSNs in terms of tuning the pore sizes, modifying the surfaces, and engineering of siliceous networks. Interestingly, the further advancements of engineered MSNs lead to the generation of highly complex and nature-mimicking structures, such as Janus-type, multi-podal, and flower-like architectures, as well as streamlined tadpole-like nanomotors. In this review, we present explicit discussions relevant to these advanced hierarchical architectures in different fields of biomedicine, including drug delivery, bioimaging, tissue engineering, and miscellaneous applications, such as photoluminescence, artificial enzymes, peptide enrichment, DNA detection, and biosensing, among others. Initially, we give a brief overview of diverse, innovative stimuli-responsive (pH, light, ultrasound, and thermos)- and targeted drug delivery strategies, along with discussions on recent advancements in cancer immune therapy and applicability of advanced MSNs in other ailments related to cardiac, vascular, and nervous systems, as well as diabetes. Then, we provide initiatives taken so far in clinical translation of various silica-based materials and their scope towards clinical translation. Finally, we summarize the review with interesting perspectives on lessons learned in exploring the biomedical applications of advanced MSNs and further requirements to be explored.
Collapse
|
6
|
Janowicz NJ, Li H, Heale FL, Parkin IP, Papakonstantinou I, Tiwari MK, Carmalt CJ. Fluorine-Free Transparent Superhydrophobic Nanocomposite Coatings from Mesoporous Silica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13426-13438. [PMID: 33146540 DOI: 10.1021/acs.langmuir.0c01767] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In recent decades, there has been a growing interest in the development of functional, fluorine-free superhydrophobic surfaces with improved adhesion for better applicability into real-world problems. Here, we compare two different methods, spin coating and aerosol-assisted chemical vapor deposition (AACVD), for the synthesis of transparent fluorine-free superhydrophobic coatings. The material was made from a nanocomposite of (3-aminopropyl)triethoxysilane (APTES) functional mesoporous silica nanoparticles and titanium cross-linked polydimethylsiloxane with particle concentrations between 9 to 50 wt %. The silane that was used to lower the surface energy consisted of a long hydrocarbon chain without fluorine groups to reduce the environmental impact of the composite coating. Both spin coating and AACVD resulted in the formation of superhydrophobic surfaces with advancing contact angles up to 168°, a hysteresis of 3°, and a transparency of 90% at 550 nm. AACVD has proven to produce more uniform coatings with concentrations as low as 9 wt %, reaching superhydrophobicity. The metal oxide cross-linking improves the adhesion of the coating to the glass. Overall, AACVD was the more optimal method to prepare superhydrophobic coatings compared to spin coating due to higher contact angles, adhesion, and scalability of the fabrication process.
Collapse
Affiliation(s)
- Norbert J Janowicz
- Nanoengineered Systems Laboratory, Mechanical Engineering, University College London, London WC1E 7JE, United Kingdom
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Hangtong Li
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Frances L Heale
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Ivan P Parkin
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Ioannis Papakonstantinou
- Photonic Innovations Lab, Electronic and Electrical Engineering, University College London, London WC1E 7JE, United Kingdom
| | - Manish K Tiwari
- Nanoengineered Systems Laboratory, Mechanical Engineering, University College London, London WC1E 7JE, United Kingdom
- Wellcome/EPSRC Centre for Interventional and Surgical Sciences, University College London, London W1W 7TS, United Kingdom
| | - Claire J Carmalt
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| |
Collapse
|
7
|
Xu T, Li X, Wang H, Zheng G, Yu G, Wang H, Zhu S. Polymerization shrinkage kinetics and degree of conversion of resin composites. J Oral Sci 2020; 62:275-280. [PMID: 32493864 DOI: 10.2334/josnusd.19-0157] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
This study compared shrinkage strain, polymerization shrinkage kinetics, and degree of conversion (DC) of a set of resin composites and investigated their influencing factors. Ten commercial resin composites were assessed, and 5 specimens (n = 5) were developed for material and subjected to light curing using light emitting diode light at 650 mW/cm2 for 40 s. The laser triangulation method was adopted to assess the shrinkage strain, and Fourier transform infrared spectroscopy was used to measure DC. The shrinkage strain was monitored for 5 min in real time and its data were subjected to differential calculations to get the shrinkage strain rate curve with respect to time, obtaining the maximum shrinkage strain rate (Rmax) and gel time. The values of shrinkage strain varied from 1.28% to 2.10%. The Rmax values were between 5.17 μm/s and 21.83 μm/s. Gel time values varied from 3.08 s to 4.32 s. The DC yielded values ranging from 53.62% to 87.01%. The values of polymerization shrinkage and DC were dependent on the composition of materials, including the monomer matrix and filler system. Compared to the micro-filler materials, the nano-filler resin composites had higher values of DC. Some resin composites are suitable for clinical applications because of their superior polymerization shrinkage properties and DC.
Collapse
Affiliation(s)
- Tong Xu
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University
| | - Xuan Li
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University
| | - Han Wang
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University
| | - Gang Zheng
- Department of Dental Materials, School and Hospital of Stomatology, Peking University
| | - Gaigai Yu
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University
| | - Huimin Wang
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University
| | - Song Zhu
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University
| |
Collapse
|
8
|
Follmann HD, Oliveira ON, Martins AC, Lazarin-Bidóia D, Nakamura CV, Rubira AF, Silva R, Asefa T. Nanofibrous silica microparticles/polymer hybrid aerogels for sustained delivery of poorly water-soluble camptothecin. J Colloid Interface Sci 2020; 567:92-102. [DOI: 10.1016/j.jcis.2020.01.110] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 01/27/2020] [Accepted: 01/28/2020] [Indexed: 02/06/2023]
|
9
|
Li CY, Huang JH, Li H, Luo MB. Study on the interfacial properties of polymers around a nanoparticle. RSC Adv 2020; 10:28075-28082. [PMID: 35519124 PMCID: PMC9055661 DOI: 10.1039/d0ra05392a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 07/20/2020] [Indexed: 11/21/2022] Open
Abstract
The interfacial properties of polymer chains on spherical nanoparticles are investigated using off-lattice Monte Carlo simulations.
Collapse
Affiliation(s)
- Chao-Yang Li
- Department of Physics
- Hangzhou Normal University
- Hangzhou 311121
- China
| | - Jian-Hua Huang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Hong Li
- Department of Physics
- Wenzhou University
- Wenzhou 325035
- China
| | - Meng-Bo Luo
- Department of Physics
- Zhejiang University
- Hangzhou 310027
- China
| |
Collapse
|
10
|
Chen H, Hu J, Zhou H, Zhou X, Xu H. One step synthesis, characterization of F127-Mn+-chlorpyrifos mesoporous silica for sustained release system with pH sensitivity. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2019. [DOI: 10.1080/10601325.2018.1504612] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Huayao Chen
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou, P.R. China
| | - Junlong Hu
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou, P.R. China
| | - Hongjun Zhou
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou, P.R. China
| | - Xinhua Zhou
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou, P.R. China
| | - Hua Xu
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou, P.R. China
| |
Collapse
|
11
|
|
12
|
Peng Y, Zhang H, Huang XW, Huang JH, Luo MB. Monte Carlo simulation on the dynamics of a semi-flexible polymer in the presence of nanoparticles. Phys Chem Chem Phys 2018; 20:26333-26343. [PMID: 30303200 DOI: 10.1039/c8cp05136d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dynamics of a semi-flexible polymer chain in the presence of periodically distributed nanoparticles is simulated by using off-lattice Monte Carlo simulations. For repulsive or weak attractive nanoparticles, the dynamics are slowed down monotonically by increasing the chain stiffness kθ or decreasing the inter-particle distance d. For strong attractive nanoparticles, however, the dynamics show nonmonotonic behaviors with kθ and d. An interesting result is that a stiff polymer may move faster than a flexible one. The underlying mechanism is that the nanoparticle's attraction is weakened by the chain stiffness. The nonmonotonic behavior of the polymer's dynamics with kθ is explained by the competition between the weakening effect of the chain stiffness on the nanoparticle's attraction and the intrinsic effect of chain stiffness which reduces the dynamics of the polymer. In addition, the nonmonotonic behavior of the polymer's dynamics with d is explained by the competition between the nanoparticle-exchange motion of the polymer dominated at small d and the desorption-and-adsorption motion at large d. The excluded volume effect of the nanoparticles plays a more important role for stiffer polymers as the attraction of the nanoparticles is weakened by the chain stiffness.
Collapse
Affiliation(s)
- Yi Peng
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Huan Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Xiao-Wei Huang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Jian-Hua Huang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Meng-Bo Luo
- Department of Physics, Zhejiang University, Hangzhou 310027, China
| |
Collapse
|
13
|
Abstract
Mesoporous silica nanoparticles (MSNs) have attracted great attention because of their high surface area, large pore volume, transparency, biocompatibility, and high cell-uptake efficiency. Such unique properties allow the use of these materials such as catalysts, drug carriers, and optical materials. This chapter introduces the preparation of MSNs and some recent developments in the preparation of MSNs with precisely controlled particle size, pore size, functionality, and morphology.
Collapse
Affiliation(s)
- Eisuke Yamamoto
- Institute of Materials and Systems for Sustainability, Nagoya University, Chikusa-ku, Japan
| | - Kazuyuki Kuroda
- Faculty of Science and Engineering, Waseda University, Tokyo, Japan; Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, Tokyo, Japan.
| |
Collapse
|
14
|
Feng Z, Zhong J, Guan W, Tian R, Lu C, Ding C. Three-dimensional direct visualization of silica dispersion in polymer-based composites. Analyst 2018; 143:2090-2095. [PMID: 29629445 DOI: 10.1039/c8an00016f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We present a novel strategy for realizing the three-dimensional direct visualization of silica dispersion by the fluorescence modification of a silica filler.
Collapse
Affiliation(s)
- Zemin Feng
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Jinpan Zhong
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Weijiang Guan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Rui Tian
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Chao Lu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Caifeng Ding
- State Key Laboratory of Sensor Analysis of Tumor Marker
- Qingdao University of Science and Technology
- Qingdao 266061
- China
| |
Collapse
|
15
|
Tsehay DA, Luo M. Static and dynamic properties of a semiflexible polymer in a crowded environment with randomly distributed immobile nanoparticles. Phys Chem Chem Phys 2018; 20:9582-9590. [DOI: 10.1039/c7cp08341f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dimensions, diffusivity, and relaxation of a polymer are dependent on the attraction strength and concentration of nanoparticles.
Collapse
Affiliation(s)
| | - Mengbo Luo
- Department of Physics
- Zhejiang University
- Hangzhou 310027
- China
- Collaborative Innovation Center of Advanced Microstructures
| |
Collapse
|
16
|
Simulation study on the conformational properties of an adsorbed polymer on a nanoparticle. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4201-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
17
|
Mitra D, Li M, Kang ET, Neoh KG. Transparent Copper-Loaded Chitosan/Silica Antibacterial Coatings with Long-Term Efficacy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:29515-29525. [PMID: 28792197 DOI: 10.1021/acsami.7b07700] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Bacteria-contaminated inanimate surfaces within hospitals and clinics result in transmission of pathogens via direct or indirect contact, leading to increased risk of healthcare-associated infections (HAI). The use of antibacterial coatings is a potential way of reducing the bacterial burden, but many surfaces such as instrument panels and monitors necessitate the coatings to be transparent while being highly antibacterial. In this work, silica nanoparticles (SiO2 NPs) were first grown over a layer of acrylated quaternized chitosan (AQCS) covalently immobilized on commercially available transparent poly(vinyl fluoride) (PVF) films. The SiO2 NPs then served as nanoreservoirs for adsorption of copper ions. The coated PVF films were transparent and reduced viable bacterial count by ∼99% and 100%, when incubated with a bacteria-loaded droplet for 60 and 120 min, respectively. The killing efficacy of these coatings, after wiping 100 times, with a deionized water-wetted cloth was reduced slightly to 97-98%. The stability of these coatings can be further improved with the deposition of another layer of cationic quaternized chitosan (QCS) over the negatively charged SiO2 NP layer, wherein the coatings maintained ∼99% killing efficacy even after 100 wipes. These coatings showed no significant toxicity to mammalian cells and, hence, can potentially be used in a clinical setting for reducing HAI.
Collapse
Affiliation(s)
- Debirupa Mitra
- Department of Chemical and Biomolecular Engineering, National University of Singapore , Kent Ridge, Singapore 117576
| | - Min Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore , Kent Ridge, Singapore 117576
| | - En-Tang Kang
- Department of Chemical and Biomolecular Engineering, National University of Singapore , Kent Ridge, Singapore 117576
| | - Koon Gee Neoh
- Department of Chemical and Biomolecular Engineering, National University of Singapore , Kent Ridge, Singapore 117576
| |
Collapse
|
18
|
Xia W, Zhao J, Wang T, Song L, Gong H, Guo H, Gao B, Fan X, He J. Anchoring ceria nanoparticles on graphene oxide and their radical scavenge properties under gamma irradiation environment. Phys Chem Chem Phys 2017. [DOI: 10.1039/c7cp02559a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The working mechanism of CG for their radical scavenge properties in the epoxy resin during radiation environment.
Collapse
Affiliation(s)
- Wei Xia
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Jun Zhao
- Jiangsu Fasten Nippon Steel Cable Co
- Ltd
- 214445 Nanjing
- P. R. China
| | - Tao Wang
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Li Song
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Hao Gong
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Hu Guo
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Bing Gao
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Xiaoli Fan
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Jianping He
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| |
Collapse
|
19
|
Huang XW, Peng Y, Huang JH, Luo MB. A study on the diffusivity of polymers in crowded environments with periodically distributed nanoparticles. Phys Chem Chem Phys 2017; 19:29975-29983. [DOI: 10.1039/c7cp05514e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two novel diffusion behaviors of polymers at low temperature: a minimum at an intermediate inter-particle distance and oscillation with polymer length.
Collapse
Affiliation(s)
- Xiao-Wei Huang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Yi Peng
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Jian-Hua Huang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Meng-Bo Luo
- Department of Physics
- Zhejiang University
- Hangzhou 310027
- China
| |
Collapse
|
20
|
Vo NT, Patra AK, Kim D. Pore size and concentration effect of mesoporous silica nanoparticles on the coefficient of thermal expansion and optical transparency of poly(ether sulfone) films. Phys Chem Chem Phys 2017; 19:1937-1944. [DOI: 10.1039/c6cp07545b] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mesoporous silica nanoparticle filler that drastically enhances the dimensional thermal stability without sacrificing the optical properties of poly(ether sulfone) films was reported.
Collapse
Affiliation(s)
- Nhat Tri Vo
- School of Chemical Engineering
- Sungkyunkwan University
- Suwon
- Republic of Korea
| | - Astam K. Patra
- School of Chemical Engineering
- Sungkyunkwan University
- Suwon
- Republic of Korea
| | - Dukjoon Kim
- School of Chemical Engineering
- Sungkyunkwan University
- Suwon
- Republic of Korea
| |
Collapse
|
21
|
Vijayan P. P, Al-Maadeed MASA. TiO 2 nanotubes and mesoporous silica as containers in self-healing epoxy coatings. Sci Rep 2016; 6:38812. [PMID: 27941829 PMCID: PMC5150240 DOI: 10.1038/srep38812] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 11/14/2016] [Indexed: 11/25/2022] Open
Abstract
The potential of inorganic nanomaterials as reservoirs for healing agents is presented here. Mesoporous silica (SBA-15) and TiO2 nanotubes (TNTs) were synthesized. Both epoxy-encapsulated TiO2 nanotubes and amine-immobilized mesoporous silica were incorporated into epoxy and subsequently coated on a carbon steel substrate. The encapsulated TiO2 nanotubes was quantitatively estimated using a 'dead pore ratio' calculation. The morphology of the composite coating was studied in detail using transmission electron microscopic (TEM) analysis. The self-healing ability of the coating was monitored using electrochemical impedance spectroscopy (EIS); the coating recovered 57% of its anticorrosive property in 5 days. The self-healing of the scratch on the coating was monitored using Scanning Electron Microscopy (SEM). The results confirmed that the epoxy pre-polymer was slowly released into the crack. The released epoxy pre-polymer came into contact with the amine immobilized in mesoporous silica and cross-linked to heal the scratch.
Collapse
Affiliation(s)
| | - Mariam Ali S. A. Al-Maadeed
- Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar
- Materials Science and Technology Program, Qatar University, P.O. Box 2713, Doha, Qatar
| |
Collapse
|
22
|
Mesoporous Nano-Silica Serves as the Degradation Inhibitor in Polymer Dielectrics. Sci Rep 2016; 6:28749. [PMID: 27338622 PMCID: PMC4919646 DOI: 10.1038/srep28749] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 06/08/2016] [Indexed: 11/18/2022] Open
Abstract
A new generation of nano-additives for robust high performance nanodielectrics is proposed. It is demonstrated for the first time that mesoporous material could act as “degradation inhibitor” for polymer dielectrics to sequestrate the electrical degradation products then restrain the electrical aging process especially under high temperature conditions, which is superior to the existing additives of nanodielectrics except further increasing the dielectric strength. Polyethylenimine (PEI) loaded nano-scaled mesoporous silica MCM-41 (nano-MS) is doped into the dielectric matrix to prepare the PP/MCM-41-PEI nanocomposites. PEI provides the amines to capture the electrical degradation products while the MCM-41 brackets afford large adsorption surface, bring down the activating temperature of the absorbent then enhance the absorptive capacity. The electrical aging tests confirm the contribution of the mesoporous structure to electrical aging resistance and FT-IR analysis of the electrical degraded regions demonstrates the chemical absorption especially under high temperature conditions. Take the experimental data as examples, extending the aging durability and dielectric strength of polymer dielectrics by 5 times and 16%, respectively, can have substantial commercial significance in energy storage, power electronics and power transmission areas.
Collapse
|
23
|
Yamamoto E, Kuroda K. Colloidal Mesoporous Silica Nanoparticles. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20150420] [Citation(s) in RCA: 164] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Eisuke Yamamoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University
| |
Collapse
|
24
|
Overton P, Danilovtseva E, Karjalainen E, Karesoja M, Annenkov V, Tenhu H, Aseyev V. Water-Dispersible Silica-Polyelectrolyte Nanocomposites Prepared via Acid-Triggered Polycondensation of Silicic Acid and Directed by Polycations. Polymers (Basel) 2016; 8:polym8030096. [PMID: 30979191 PMCID: PMC6432522 DOI: 10.3390/polym8030096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 03/11/2016] [Accepted: 03/16/2016] [Indexed: 01/08/2023] Open
Abstract
The present work describes the acid-triggered condensation of silicic acid, Si(OH)₄, as directed by selected polycations in aqueous solution in the pH range of 6.5⁻8.0 at room temperature, without the use of additional solvents or surfactants. This process results in the formation of silica-polyelectrolyte (S-PE) nanocomposites in the form of precipitate or water-dispersible particles. The mean hydrodynamic diameter (dh) of size distributions of the prepared water-dispersible S-PE composites is presented as a function of the solution pH at which the composite formation was achieved. Poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) and block copolymers of DMAEMA and oligo(ethylene glycol) methyl ether methacrylate (OEGMA) were used as weak polyelectrolytes in S-PE composite formation. The activity of the strong polyelectrolytes poly(methacryloxyethyl trimethylammonium iodide) (PMOTAI) and PMOTAI-b-POEGMA in S-PE formation is also examined. The effect of polyelectrolyte strength and the OEGMA block on the formation of the S-PE composites is assessed with respect to the S-PE composites prepared using the PDMAEMA homopolymer. In the presence of the PDMAEMA60 homopolymer (Mw = 9400 g/mol), the size of the dispersible S-PE composites increases with solution pH in the range pH 6.6⁻8.1, from dh = 30 nm to dh = 800 nm. S-PDMAEMA60 prepared at pH 7.8 contained 66% silica by mass (TGA). The increase in dispersible S-PE particle size is diminished when directed by PDMAEMA300 (Mw = 47,000 g/mol), reaching a maximum of dh = 75 nm. S-PE composites formed using PDMAEMA-b-POEGMA remain in the range dh = 20⁻30 nm across this same pH regime. Precipitated S-PE composites were obtained as spheres of up to 200 nm in diameter (SEM) and up to 65% mass content of silica (TGA). The conditions of pH for the preparation of dispersible and precipitate S-PE nanocomposites, as directed by the five selected polyelectrolytes PDMAEMA60, PDMAEMA300, PMOTAI60, PDMAEMA60-b-POEGMA38 and PMOTAI60-b-POEGMA38 is summarized.
Collapse
Affiliation(s)
- Philip Overton
- Laboratory of Polymer Chemistry, Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, P.O. Box 55, FIN-00014 HY Helsinki, Finland.
| | - Elena Danilovtseva
- Limnological Institute Siberian Branch of the Russian Academy of Sciences, 3, Ulan-Bator Str., Irkutsk 664033, Russia.
| | - Erno Karjalainen
- Laboratory of Polymer Chemistry, Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, P.O. Box 55, FIN-00014 HY Helsinki, Finland.
| | - Mikko Karesoja
- Laboratory of Polymer Chemistry, Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, P.O. Box 55, FIN-00014 HY Helsinki, Finland.
| | - Vadim Annenkov
- Limnological Institute Siberian Branch of the Russian Academy of Sciences, 3, Ulan-Bator Str., Irkutsk 664033, Russia.
| | - Heikki Tenhu
- Laboratory of Polymer Chemistry, Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, P.O. Box 55, FIN-00014 HY Helsinki, Finland.
| | - Vladimir Aseyev
- Laboratory of Polymer Chemistry, Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, P.O. Box 55, FIN-00014 HY Helsinki, Finland.
| |
Collapse
|
25
|
Pauly CS, Genix AC, Alauzun JG, Sztucki M, Oberdisse J, Hubert Mutin P. Surface modification of alumina-coated silica nanoparticles in aqueous sols with phosphonic acids and impact on nanoparticle interactions. Phys Chem Chem Phys 2015; 17:19173-82. [PMID: 26134150 DOI: 10.1039/c5cp01925g] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
It is often necessary to tailor nanoparticle (NP) interactions and their compatibility with a polymer matrix by grafting organic groups, but the commonly used silanization route offers little versatility, particularly in water. Herein, alumina-coated silica NPs in aqueous sols have been modified for the first time with low molecular-weight phosphonic acids (PAs) bearing organic groups of various hydrophobicities and charges: propyl, pentyl and octyl PAs, and two PAs bearing hydrophilic groups, either a neutral diethylene glycol (DEPA) or a potentially charged carboxylic acid (CAPA) group. The interactions and aggregation in the sols have been investigated using zeta potential measurements, dynamic light scattering, transmission electron microscopy, and small-angle scattering methods. The surface modification has been studied using FTIR and (31)P MAS NMR spectroscopies. Both high grafting density ρ and high hydrophobicity of the groups on the PAs induced aggregation, whereas suspensions of NPs grafted by DEPA remained stable up to the highest ρ. Unexpectedly, CAPA-modified NPs showed aggregation even at low ρ, suggesting that the carboxylic end group was also grafted to the surface. Surface modification of aqueous sols with PAs allows thus for the grafting of a higher density and a wider variety of organic groups than organosilanes, offering an increased control of the interactions between NPs, which is of interest for designing waterborne nanocomposites.
Collapse
Affiliation(s)
- Céline Schmitt Pauly
- Institut Charles Gerhardt Montpellier, UMR 5253, CNRS-UM-ENSCM, Université de Montpellier, Place Eugène Bataillon, CC1701, F-34095 Montpellier Cedex 5, France
| | | | | | | | | | | |
Collapse
|
26
|
Li CY, Luo MB, Huang JH, Li H. Equilibrium and dynamical properties of polymer chains in random medium filled with randomly distributed nano-sized fillers. Phys Chem Chem Phys 2015; 17:31877-86. [DOI: 10.1039/c5cp06189j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of randomly distributed nano-sized fillers on the equilibrium and dynamical properties of linear polymers is studied by using off-lattice Monte Carlo simulation.
Collapse
Affiliation(s)
- Chao-Yang Li
- Department of Physics
- Hangzhou Normal University
- Hangzhou 310036
- China
| | - Meng-Bo Luo
- Department of Physics
- Zhejiang University
- Hangzhou 310027
- China
| | - Jian-Hua Huang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Hong Li
- Department of Physics
- Wenzhou University
- Wenzhou 325035
- China
| |
Collapse
|
27
|
Lee YC, Dutta S, Wu KCW. Integrated, cascading enzyme-/chemocatalytic cellulose conversion using catalysts based on mesoporous silica nanoparticles. CHEMSUSCHEM 2014; 7:3241-6. [PMID: 25257168 DOI: 10.1002/cssc.201402605] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Revised: 08/08/2014] [Indexed: 05/09/2023]
Abstract
This article reports a novel approach to deconstructing cellulose into 5-hydroxymethylfurfural (HMF) with a high yield (46.1%) by integrating a sequential enzyme cascade technique in an aqueous system with solid acid catalysis in an organic-solvent system. We executed the rational design and synthesis of mesoporous silica nanoparticles (MSNs) with various pore sizes and surface functionalities, which proved to be useful for the immobilization of various enzymes (i.e., cellulase and isomerase) and nanoparticles (i.e., magnetic Fe3 O4 ) and for functionalization of various acid groups (i.e., H2 PO3 , COOH, and SO3 H). We separately applied the synthesized biocatalysts (i.e., cellulase-Fe3 O4 @MSN and isomerase-Fe3 O4 @MSN) and chemical catalysts (i.e., HSO3 -MSN) in a sequential cellulose-to-glucose, glucose-to-fructose, and fructose-to-HMF conversion, respectively, across both aqueous- and organic-solvent systems after the optimization of reaction conditions (e.g., reaction temperature, water ratio, catalyst amount). The integrated enzymatic and chemocatalytic concept in this study could be an effective and economically friendly process for various catalytic applications.
Collapse
Affiliation(s)
- Yi-Chun Lee
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617 (Taiwan)
| | | | | |
Collapse
|
28
|
Suzuki N, Kamachi Y, Takai K, Kiba S, Sakka Y, Miyamoto N, Yamauchi Y. Effective Use of Mesoporous Silica Filler: Comparative Study on Thermal Stability and Transparency of Silicone Rubbers Loaded with Various Kinds of Silica Particles. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301615] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
29
|
Mondal S, Das N. Triptycene based organosoluble polyamides: synthesis, characterization and study of the effect of chain flexibility on morphology. RSC Adv 2014. [DOI: 10.1039/c4ra10476e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Triptycene based thermally stable, organosoluble and low viscous polyamides have been prepared. Polymers may be categorized as self-extinguishing materials. Relation between structural flexibility and surface morphology has been studied.
Collapse
Affiliation(s)
- Snehasish Mondal
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna 800 013, India
| | - Neeladri Das
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna 800 013, India
| |
Collapse
|
30
|
Abstract
Good control of the morphology, particle size, uniformity and dispersity of mesoporous silica nanoparticles (MSNs) is of increasing importance to their use in catalyst, adsorption, polymer filler, optical devices, bio-imaging, drug delivery, and biomedical applications. This review discusses different synthesis methodologies to prepare well-dispersed MSNs and hollow silica nanoparticles (HSNs) with tunable dimensions ranging from a few to hundreds of nanometers of different mesostructures. The methods include fast self-assembly, soft and hard templating, a modified Stöber method, dissolving-reconstruction and modified aerogel approaches. In practical applications, the MSNs prepared by these methods demonstrate good potential for use in high-performance catalysis, antireflection coating, transparent polymer-MSNs nanocomposites, drug-release and theranostic systems.
Collapse
Affiliation(s)
- Si-Han Wu
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106
| | | | | |
Collapse
|
31
|
Afzal A, Siddiqi HM, Saeed S, Ahmad Z. Exploring resin viscosity effects in solventless processing of nano-SiO2/epoxy polymer hybrids. RSC Adv 2013. [DOI: 10.1039/c3ra21150a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
32
|
Suzuki N, Huang YT, Nemoto Y, Nakahira A, Yamauchi Y. Highly Densified Mesoporous Bulk Silica Prepared with Colloidal Mesoporous Silica Nanoparticles toward a New Low-k Material. CHEM LETT 2012. [DOI: 10.1246/cl.2012.1518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Norihiro Suzuki
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS)
| | - Yu-Tzu Huang
- Department of Bioenvironmental Engineering and R&D Center for Membrane Technology, Chung Yuan Christian University
| | - Yoshihiro Nemoto
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS)
| | | | - Yusuke Yamauchi
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS)
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST)
| |
Collapse
|