1
|
Muzata TS, L JP, Bose S. Nanoparticles influence miscibility in LCST polymer blends: from fundamental perspective to current applications. Phys Chem Chem Phys 2020; 22:20167-20188. [PMID: 32966418 DOI: 10.1039/d0cp01814g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Polymer blending is an effective method that can be used to fabricate new versatile materials with enhanced properties. The blending of two polymers can result in either a miscible or an immiscible polymer blend system. This present review provides an in-depth summary of the miscibility of LCST polymer blend systems, an area that has garnered much attention in the past few years. The initial discourse of the present review mainly focuses on process-induced changes in the miscibility of polymer blend systems, and how the preparation of polymer blends affects their final properties. This review further highlights how nanoparticles induce miscibility and describes the various methods that can be implemented to avoid nanoparticle aggregation. The concepts and different state-of-the-art experimental methods which can be used to determine miscibility in polymer blends are also highlighted. Lastly, the importance of studying miscible polymer blends is extensively explored by looking at their importance in barrier materials, EMI shielding, corrosion protection, light-emitting diodes, gas separation, and lithium battery applications. The primary goal of this review is to cover the journey from the fundamental aspects of miscible polymer blends to their applications.
Collapse
Affiliation(s)
- Tanyaradzwa S Muzata
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
| | - Jagadeshvaran P L
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
| | - Suryasarathi Bose
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
| |
Collapse
|
2
|
|
3
|
Lv X, Zuo M, Zhang H, Zhao A, Zhu W, Zheng Q. Phase separation behavior of poly(methyl methacrylate)/poly(styrene- co-maleic anhydride) in the presence of hollow silica nanotubes. RSC Adv 2018; 8:40701-40711. [PMID: 35557897 PMCID: PMC9091413 DOI: 10.1039/c8ra07679k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 11/23/2018] [Indexed: 11/28/2022] Open
Abstract
The phase separation behavior of poly(methyl methacrylate) (PMMA)/poly(styrene-co-maleic anhydride) (SMA) blends with and without one-dimensional hollow silica nanotubes (HSNTs) was investigated using time-resolved small-angle laser light scattering. During isothermal annealing over a range of 100 °C above the glass transition temperature, the Arrhenius equation is applicable to describe the temperature dependence of phase separation behavior at the early and late stages of spinodal decomposition (SD) for unfilled and filled PMMA/SMA systems. The mechanical barrier effect of HSNTs on the macromolecular chain diffusion of the blend matrix may retard the concentration fluctuation at the early stage and slow down the domain coarsening at the late stage of SD phase separation for the blend matrix to result in the decrease of apparent diffusion coefficient D app, the postponement of the relaxation time and the decline of temperature sensitivity for the phase separation rate.
Collapse
Affiliation(s)
- Xiong Lv
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University Hangzhou 310027 China
| | - Min Zuo
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University Hangzhou 310027 China
| | - Haimo Zhang
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University Hangzhou 310027 China
| | - An Zhao
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University Hangzhou 310027 China
| | - Weipu Zhu
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University Hangzhou 310027 China
| | - Qiang Zheng
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University Hangzhou 310027 China
| |
Collapse
|
4
|
Gong T, Bao RY, Liu ZY, Xie BH, Yang MB, Yang W. The effect of chain mobility on the coarsening process of co-continuous, immiscible polymer blends under quiescent melt annealing. Phys Chem Chem Phys 2017; 19:12712-12719. [DOI: 10.1039/c7cp01278k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The relationship between the mobility of polymer molecular chains and the phase coarsening process of co-continuous, immiscible polymer blends under quiescent melt annealing is presented.
Collapse
Affiliation(s)
- Tao Gong
- State Key Laboratory of Polymer Materials Engineering
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Rui-Ying Bao
- State Key Laboratory of Polymer Materials Engineering
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Zheng-Ying Liu
- State Key Laboratory of Polymer Materials Engineering
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Bang-Hu Xie
- State Key Laboratory of Polymer Materials Engineering
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ming-Bo Yang
- State Key Laboratory of Polymer Materials Engineering
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Wei Yang
- State Key Laboratory of Polymer Materials Engineering
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| |
Collapse
|
5
|
Pathak B, Xavier P, Bose S, Basu S. Thermally induced phase separation in levitated polymer droplets. Phys Chem Chem Phys 2016; 18:32477-32485. [PMID: 27869260 DOI: 10.1039/c6cp06283k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report thermally induced rapid phase separation in PS/PVME polymer blends using a unique contact free droplet based architecture. De-mixing of homogeneous blends due to inter component dynamic asymmetry is aggravated by the externally supplied heat. Separation of polymer blends is usually investigated in the bulk which is a tedious process and requires several hours for completion. Alternatively, separation in droplet configuration reduces the process timescale by about 3-5 orders due to a constrained micron-sized domain [fast processing and high throughput] while maintaining similar separation morphologies as in the bulk. We observed the effect of heating rates on the phase separation length and timescales. Furthermore, the separation length scale can be precisely controlled across one order by simply tuning the heating rate. The methodology can be scaled up for applications ranging from surface patterning to pharmaceutics.
Collapse
Affiliation(s)
- Binita Pathak
- Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560012, India.
| | - Priti Xavier
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Suryasarathi Bose
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Saptarshi Basu
- Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560012, India.
| |
Collapse
|
6
|
Kar GP, Biswas S, Bose S. X-ray micro computed tomography, segmental relaxation and crystallization kinetics in interfacial stabilized co-continuous immiscible PVDF/ABS blends. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
7
|
Saiter A, Delpouve N, Dargent E, Oberhauser W, Conzatti L, Cicogna F, Passaglia E. Probing the chain segment mobility at the interface of semi-crystalline polylactide/clay nanocomposites. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.03.040] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
8
|
Gegenhuber T, Krekhova M, Schöbel J, Gröschel AH, Schmalz H. "Patchy" Carbon Nanotubes as Efficient Compatibilizers for Polymer Blends. ACS Macro Lett 2016; 5:306-310. [PMID: 35614726 DOI: 10.1021/acsmacrolett.6b00033] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Surface-modified carbon nanotubes (CNTs) have become well-established filler materials for polymer nanocomposites. However, in immiscible polymer blends, the CNT-coating is selective toward the more compatible phase, which suppresses their homogeneous distribution and limits harnessing the full potential of the filler. In this study, we show that multiwalled CNTs with a patchy polystyrene/poly(methyl methacrylate) (PS/PMMA) corona disperse equally well in both phases of an incompatible PS/PMMA polymer blend. Unlike polymer-grafted CNTs with a uniform corona, the patchy CNTs are able to adjust their corona structure to the blend phases by selective swelling/collapse of respective miscible/immiscible surface patches. Importantly, the high interfacial activity of patchy CNTs further causes a significant decrease in PMMA droplet size with increasing filler content. The combined effect of compatibilization and homogeneous distribution makes patchy CNTs interesting materials for polymer blend nanocomposites, where next to the compatibilization, a homogeneous filler distribution is important to gain the desired materials property (e.g., reinforcement).
Collapse
Affiliation(s)
- Thomas Gegenhuber
- Makromolekulare
Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - Marina Krekhova
- Makromolekulare
Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - Judith Schöbel
- Makromolekulare
Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - André H. Gröschel
- Department
of Applied Physics, Aalto University School of Science, 00076 Aalto, Finland
| | - Holger Schmalz
- Makromolekulare
Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
| |
Collapse
|
9
|
Xavier P, Bose S. Nanomechanical Mapping, Hierarchical Polymer Dynamics, and Miscibility in the Presence of Chain-End Grafted Nanoparticles. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b01849] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Priti Xavier
- Department
of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Suryasarathi Bose
- Department
of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
| |
Collapse
|
10
|
Xavier P, Rao P, Bose S. Nanoparticle induced miscibility in LCST polymer blends: critically assessing the enthalpic and entropic effects. Phys Chem Chem Phys 2016; 18:47-64. [DOI: 10.1039/c5cp05852j] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of polymer blends widened the possibility of creating materials with multilayered architectures.
Collapse
Affiliation(s)
- Priti Xavier
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| | - Praveen Rao
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| | - Suryasarathi Bose
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| |
Collapse
|
11
|
Li HH, Zuo M, Liu T, Chen Q, Zhang J, Zheng Q. Effect of multi-walled carbon nanotubes on the morphology evolution, conductivity and rheological behaviors of poly(methyl methacrylate)/poly(styrene-co-acrylonitrile) blends during isothermal annealing. RSC Adv 2016. [DOI: 10.1039/c5ra23002k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
MWNTs migrate and aggregate in SAN-rich phase to form the double percolated structure with thermal-induced phase separation of blend matrix.
Collapse
Affiliation(s)
- Hui-hui Li
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization
- Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
| | - Min Zuo
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization
- Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
| | - Ting Liu
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization
- Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
| | - Qi Chen
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization
- Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
| | - Jifei Zhang
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization
- Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
| | - Qiang Zheng
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization
- Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
| |
Collapse
|
12
|
|
13
|
Biswas S, Kar GP, Bose S. Engineering nanostructured polymer blends with controlled nanoparticle location for excellent microwave absorption: a compartmentalized approach. NANOSCALE 2015; 7:11334-11351. [PMID: 26067647 DOI: 10.1039/c5nr01785h] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In order to obtain better materials, control over the precise location of nanoparticles is indispensable. It is shown here that ordered arrangements of nanoparticles, possessing different characteristics (electrical/magnetic dipoles), in the blend structure can result in excellent microwave absorption. This is manifested from a high reflection loss of ca. -67 dB for the best blend structure designed here. To attenuate electromagnetic radiation, the key parameters of high electrical conductivity and large dielectric/magnetic loss are targeted here by including a conductive material [multiwall carbon nanotubes, MWNTs], ferroelectric nanostructured material with associated relaxations in the GHz frequency [barium titanate, BT] and lossy ferromagnetic nanoparticles [nickel ferrite, NF]. In this study, bi-continuous structures were designed using 50/50 (by wt) blends of polycarbonate (PC) and polyvinylidene fluoride (PVDF). The MWNTs were modified using an electron acceptor molecule, a derivative of perylenediimide, which facilitates π-π stacking with the nanotubes and stimulates efficient charge transport in the blends. The nanoscopic materials have specific affinity towards the PVDF phase. Hence, by introducing surface-active groups, an ordered arrangement can be tailored. To accomplish this, both BT and NF were first hydroxylated followed by the introduction of amine-terminal groups on the surface. The latter facilitated nucleophilic substitution reactions with PC and resulted in their precise location. In this study, we have shown for the first time that by a compartmentalized approach, superior EM attenuation can be achieved. For instance, when the nanoparticles were localized exclusively in the PVDF phase or in both the phases, the minimum reflection losses were ca. -18 dB (for the MWNT/BT mixture) and -29 dB (for the MWNT/NF mixture), and the shielding occurred primarily through reflection. Interestingly, by adopting the compartmentalized approach wherein the lossy materials were in the PC phase and the conductive materials (MWNT) were in the PVDF phase, outstanding reflection losses of ca. -57 dB (for the BT and MWNT combination) and -67 dB (for the NF and MWNT combination) were noted and the shielding occurred primarily through absorption. Thus, the approach demonstrates that nanoscopic structuring in the blends can be achieved under macroscopic processing conditions and this strategy can further be explored to design microwave absorbers.
Collapse
Affiliation(s)
- Sourav Biswas
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
| | | | | |
Collapse
|
14
|
Rohini R, Bose S. Tailored interface and enhanced elastic modulus in epoxy-based composites in presence of branched poly(ethyleneimine) grafted multiwall carbon nanotubes. Phys Chem Chem Phys 2015; 17:7907-13. [PMID: 25721659 DOI: 10.1039/c4cp06085g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, branched poly(ethyleneimine), BPEI, was synthesized from carboxylic acid terminated multi-walled carbon nanotubes (c-MWNTs) and characterized using FTIR, TEM and TGA. The BPEI was then chemically grafted onto MWNTs to enhance the interfacial adhesion with the epoxy matrix. The epoxy composites with c-MWNTs and the BPEI-g-MWNTs were prepared using a sonication and mechanical stirring method, followed by curing at 100 °C and post-curing at 120 °C. The dynamic mechanical thermal analysis showed an impressive 49% increment in the storage elastic modulus in the composites. In addition, the nanoindentation on the composites exhibited significant improvement in the hardness and decrease in the plasticity index in the presence of the BPEI-g-MWNTs. Thus, epoxy composites with BPEI-g-MWNTs can be further explored as self-healing materials.
Collapse
Affiliation(s)
- Rani Rohini
- Department of Materials Engineering, Indian Institute of Science, Bangalore-560012, India.
| | | |
Collapse
|
15
|
Sharma M, Madras G, Bose S. Unusual Fragility and Cooperativity in Glass-Forming and Crystalline PVDF/PMMA Blends in the Presence of Multiwall Carbon Nanotubes. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00418] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Maya Sharma
- Center for Nano Science and Engineering, ‡Department of Chemical Engineering, and §Department of
Materials Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Giridhar Madras
- Center for Nano Science and Engineering, ‡Department of Chemical Engineering, and §Department of
Materials Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Suryasarathi Bose
- Center for Nano Science and Engineering, ‡Department of Chemical Engineering, and §Department of
Materials Engineering, Indian Institute of Science, Bangalore 560012, India
| |
Collapse
|
16
|
Kar GP, Bharati A, Xavier P, Madras G, Bose S. The key role of polymer grafted nanoparticles in the phase miscibility of an LCST mixture. Phys Chem Chem Phys 2015; 17:868-77. [DOI: 10.1039/c4cp02925a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A lower graft density leads to entropic penalty, further facilitating PS-g-nAg particles to localize in the PVME phase of the blends. Further, the PS-g-nAg particles delayed the demixing temperature by 18 °C in PS-Br–PVME blends.
Collapse
Affiliation(s)
- Goutam Prasanna Kar
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| | - Avanish Bharati
- Department of Chemical Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| | - Priti Xavier
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| | - Giridhar Madras
- Department of Chemical Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| | - Suryasarathi Bose
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| |
Collapse
|
17
|
Wan Q, Liu M, Tian J, Deng F, Dai Y, Wang K, Li Z, Zhang Q, Zhang X, Wei Y. Toward the development of versatile functionalized carbon nanotubes. RSC Adv 2015. [DOI: 10.1039/c4ra17292b] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
A versatile and effective strategy combination of mussel inspired chemistry and SET-LRP has been developed for preparation of hydrophilic and hydrophobic carbon nanotubes for the first time.
Collapse
Affiliation(s)
- Qing Wan
- Department of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Meiying Liu
- Department of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Jianwen Tian
- Department of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Fengjie Deng
- Department of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Yanfeng Dai
- Department of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Ke Wang
- Department of Chemistry and the Tsinghua Center for Frontier Polymer Research
- Tsinghua University
- Beijing
- P. R. China
| | - Zhen Li
- Department of Chemistry and the Tsinghua Center for Frontier Polymer Research
- Tsinghua University
- Beijing
- P. R. China
| | - Qingsong Zhang
- Department of Chemistry and the Tsinghua Center for Frontier Polymer Research
- Tsinghua University
- Beijing
- P. R. China
| | - Xiaoyong Zhang
- Department of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Yen Wei
- Department of Chemistry and the Tsinghua Center for Frontier Polymer Research
- Tsinghua University
- Beijing
- P. R. China
| |
Collapse
|
18
|
Kar GP, Biswas S, Bose S. Tailoring the interface of an immiscible polymer blend by a mutually miscible homopolymer grafted onto graphene oxide: outstanding mechanical properties. Phys Chem Chem Phys 2015; 17:1811-21. [DOI: 10.1039/c4cp04481a] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unique strategy was adopted here to improve the compatibility between the components of an immiscible polymer blend and strengthen the interface.
Collapse
Affiliation(s)
- Goutam Prasanna Kar
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| | - Sourav Biswas
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| | - Suryasarathi Bose
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| |
Collapse
|
19
|
Biswas S, Kar GP, Arora D, Bose S. A unique strategy towards high dielectric constant and low loss with multiwall carbon nanotubes anchored onto graphene oxide sheets. RSC Adv 2015. [DOI: 10.1039/c4ra15885g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Multiwall carbon nanotubes (MWNTs) were anchored onto graphene oxide sheets (GOs) via diazonium and C–C coupling reactions and characterized by spectroscopic and electron microscopic techniques.
Collapse
Affiliation(s)
- Sourav Biswas
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| | - Goutam Prasanna Kar
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| | - Deepshikha Arora
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| | - Suryasarathi Bose
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
- India
| |
Collapse
|
20
|
Kar GP, Biswas S, Bose S. Simultaneous enhancement in mechanical strength, electrical conductivity, and electromagnetic shielding properties in PVDF–ABS blends containing PMMA wrapped multiwall carbon nanotubes. Phys Chem Chem Phys 2015; 17:14856-65. [DOI: 10.1039/c5cp01452b] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unique approach was adopted to drive the multiwall carbon nanotubes (MWNTs) to the interface of immiscible PVDF–ABS blends by wrapping the nanotubes with a mutually miscible homopolymer (PMMA).
Collapse
Affiliation(s)
- Goutam Prasanna Kar
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
| | - Sourav Biswas
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
| | - Suryasarathi Bose
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore-560012
| |
Collapse
|
21
|
Xavier P, Bose S. Electromagnetic shielding materials and coatings derived from gelation of multiwall carbon nanotubes in an LCST mixture. RSC Adv 2014. [DOI: 10.1039/c4ra08220f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|