Abnormal pressure dependence of the phase boundaries in TL/PEO/P(EO-<i>b</i>-DMS) ternary mixtures

Jiang, Shichun; Jiang, Wei; Wolf, Bernhard; An, Lijia; Jiang, Bingzheng

doi:10.1103/physrevb.68.054110

Cited by 8 publications

(13 citation statements)

References 33 publications

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“…Volume fraction of CNTs (VCNT) in the FFRC depends on the CNT diameter, the carbon fiber diameter, and the surface to surface distance between two adjacent radially aligned CNTs at their roots. If there are no other phases or materials in between CNTs, it is reported [13] that the minimum surface to surface distance between two adjacent CNTs is the equilibrium van der Waals distance, which is about 0.34 nm. Since in the PMNC material, polyimide polymer molecules fill the gap between CNTs and the formation of the interphase is also considered, the surface to surface distance between the two adjacent CNTs at their roots is considered as 1.7 nm.…”

Section: V" -F-vi) ([C] -P]) [Ay] + V"([c] -[C] ) [A"]]mentioning

confidence: 98%

“…For the constituent phase denoted by r, a\, a\, and a\ are the normal stresses along the principal material coordinate axes 1, 2, and 3, respectively; t\, t^, and e\ are the corresponding normal .,, 6) are the elastic coefficients. Several authors [10,[12][13][14] assumed a perfectly bonding condition between a CNT and the polymer matrix. Esteva and Spanos [14] emphatically reported that the imperfect bonding does not affect the effective longitudinal Young's modulus of the CNTreinforced polymer matrix composite and marginally affects the transverse properties of the composite for high volume fraction (>0.8) of CNTs.…”

Section: Model Of the Wavy Cntmentioning

confidence: 99%

“…(9)-(ll), the local strain vectors {e"} and {e^} can be expressed in terms of the composite strain {e"*^} and subsequently, using them in Eq. (8), the following constitutive relation between the states of stresses and the states of strains at any point in the unwound PMNC material with straight CNTs is obtained, (13) where the effective elastic coefficient matrix [C"'] of the lamina of the unwound PMNC with straight CNTs is given by…”

Section: Effective Properties Of the Pmnc As Shown Inmentioning

confidence: 99%

“…Gao and Li [12] derived a shear lag model of discontinuous CNT-reinforced polymer composites by considering the CNT as an equivalent solid fiber. Jiang et al [13] determined the maximum volume fraction of CNTs in CNTreinforced composites and investigated its effect on the effective elastic properties of the composite. Esteva and Spanos [14] studied the effect of weakened interfaces between CNTs and the polymer matrix on the effective properties of CNT-reinforced polymer matrix composites.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Carbon Nanotube Waviness on the Elastic Properties of the Fuzzy Fiber Reinforced Composites

Kundalwal¹,

Ray

2013

Journal of Applied Mechanics

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A fuzzy fiber reinforced composite (FFRC) reinforced with wavy zig-zag single-walled carbon nanotubes (CNTs) and carbon fibers is analyzed in this study. The distinct constructional feature of this composite is that the wavy CNTs are radially grown on the surface of carbon fibers. To study the effect of the waviness of CNTs on the elastic properties of the FFRC, analytical models based on the mechanics of materials (MOM) approach is derived. Effiective elastic properties of the FFRC incorporating the wavy CNTs estimated by the MOM approach have been compared with those predicted by the Mori-Tanaka (MT) method. The values of the effective elastic properties of this composite are estimated in the presence of an interphase between the CNT and the polymer matrix which models the nonbonded van dar Waals interaction between the CNT and the polymer matrix. The effect of waviness of CNTs on the effiective properties of the FFRC is investigated when the wavy CNTs are coplanar with two mutually orthogonal planes. The results demonstrate that the axial effective elastic properties of the FFRC containing wavy CNTs can be improved over those of the FFRC with straight CNTs.

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Section: V" -F-vi) ([C] -P]) [Ay] + V"([c] -[C] ) [A"]]mentioning

confidence: 98%

Section: Model Of the Wavy Cntmentioning

confidence: 99%

Section: Effective Properties Of the Pmnc As Shown Inmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Carbon Nanotube Waviness on the Elastic Properties of the Fuzzy Fiber Reinforced Composites

Kundalwal¹,

Ray

2013

Journal of Applied Mechanics

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“…Hierarchical approach for deadlock detection at run time is proposed in [7]. Here the PN is partitioned; the partitions are given local deadlock detection observers that are supervised by a global observer that leads to a hierarchical deadlock detection approach.…”

Section: Related Workmentioning

confidence: 99%

An Enhanced Distributed Deadlock Detection and Recovery in Process Networks

Shayeji¹,

Fairouz²,

Samrajesh³

2012

IJCEE

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Abstract-The Process Network (PN) model consists of multiple concurrent processes communicating over a unidirectional First-In-First-Out (FIFO) queue. Process networks are widely used for functional parallelism in digital signal processing and streaming data applications such as MPEG encoding and decoding. However, the bounded-memory scheduling policy of process networks can lead to process deadlock. The current deadlock detection and recovery algorithms in process networks can be enhanced by incorporating the role of a coordinator.In this paper we propose an enhanced distributed deadlock detection and recovery algorithm using blocked-lists and a coordinator to detect and recover from deadlocks. The distributed blocked-list algorithms detect the blocked processes and merge them with the existing blocked-lists. When a cycle is detected in the blocked-list, the coordinator is invoked to recover the system from the deadlock by either increasing the size of the channel for artificial deadlocks or by terminating the lowest priority processes from the blocked-lists. Our evaluation of the algorithm shows that the proposed blocked-list algorithm out performs other algorithms by requiring fewer messages to detect and recover from deadlock.Index Terms-Deadlock detection, deadlock recovery, distributed systems, kahn process networks (KPN).

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Soft Materials with Diverse Suprastructures via the Self-Assembly of Metal–Organic Complexes

2019

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CONSPECTUS: Inspired by assemblies in the natural world, researchers have prepared diverse suprastructures with distinct spatial arrangements by artificial self-assembly, including micelles, vesicles, ribbons, films, fibers, and tubes. The field of assembly is undergoing a transition from single-component to multicomponent assembly and single-step to multistep processing. Control over the size, shape, and composition of these building blocks has enabled the formation of suprastructures with substantial structural diversity. More importantly, harnessing noncovalent interactions to create suprastructures in a controlled manner will lead to a better understanding of the formation of complex self-organized patterns. However, for the construction of multiscale self-assemblies with controllable shapes and functions, the selection of a suitable protocol remains challenging. Coordination-driven self-assembly provides a bottom-up approach to construct various metal-organic complexes (MOCs), which could be further used as building blocks with controllable shapes and sizes. Despite the tremendous progress made in the design of MOC-based supramolecular materials, most of these MOCs have dimensions of only several nanometers, and investigations of these structures rely on the characterization of their crystal structure. However, most of the functional suprastructures in living organisms have dimensions ranging from microns to centimeters and have the form of soft materials. Thus, obtaining MOC-based highly ordered materials of larger size remains a challenge. This Account focuses on our recent advances in the construction of soft suprastructure materials with MOCs. A series of functionalized MOCs were first constructed through coordination-driven self-assembly. Then, further self-assembly of the as-prepared MOCs gave rise to the formation of higher-order structures. By changing the functional groups in the acceptors and donors in the MOCs, different suprastructures, including nanospheres, nanodiamonds, nanorods, nanofibers, membranes, films, and gels, were prepared. These studies suggest that using MOCs as building blocks is a highly efficient strategy to achieve complex architectures and functional materials for the development of desired MOC-based soft materials with high precision and fidelity.

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Abnormal pressure dependence of the phase boundaries in TL/PEO/P(EO-b-DMS) ternary mixtures

Cited by 8 publications

References 33 publications

Effect of Carbon Nanotube Waviness on the Elastic Properties of the Fuzzy Fiber Reinforced Composites

Effect of Carbon Nanotube Waviness on the Elastic Properties of the Fuzzy Fiber Reinforced Composites

An Enhanced Distributed Deadlock Detection and Recovery in Process Networks

Soft Materials with Diverse Suprastructures via the Self-Assembly of Metal–Organic Complexes

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