Shape memory polymer nanocomposite: a review on structure–property relationship

Bhanushali, Haresh; Amrutkar, Shweta Y.; Mestry, Siddhesh; Mhaske, S. T.

doi:10.1007/s00289-021-03686-x

Cited by 49 publications

(31 citation statements)

References 267 publications

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“…In order to address the above challenges and in conjunction with the research hotspots and directions in the field of SMP, the nanomaterialbased modified SMP will likely provide opportunities for their development. SMP nanocomposites have high elastic modulus and mechanical properties, which can significantly increase their shape recovery force and obtain new stimulus-response patterns based on Nano effects (Bhanushali et al, 2021). For example, graphene can impart superior electrical conductivity to SMP, and boron nitride nanosheets can improve SMP's thermal conductivity and shape recovery speed, carbon nanotubes can impart superior mechanical strength and multifunctional stimulus responsiveness to SMP (Kuma and Purohit, 2019;Demoly et al, 2021).…”

Section: Current Challengesmentioning

confidence: 99%

Shape memory polymer-based prefabricated components: Design ideas and prospects

Zhang

2023

Front. Mater.

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Shape memory polymers (SMP) are the smart materials that have received the most attention and are the most commonly employed. SMP can be 4D printed to create prefabricated components with transform shapes, properties, or functions under different external excitations. Although smart equipment assembled from these prefabricated components is extensively used in various fields, a systematic overview summary of their design ideas still needs to be provided. This paper briefly analyzes current trends in the design ideas and application of SMP-based prefabricated components. By summarizing two different design ideas: structural combination and material modification, it demonstrates the application of smart equipment assembled from SMP-based prefabricated components in medical, industrial, and aerospace fields. Furthermore, current challenges with both design ideas are discussed.

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Section: Current Challengesmentioning

confidence: 99%

Shape memory polymer-based prefabricated components: Design ideas and prospects

Zhang

2023

Front. Mater.

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“…96 The addition of GO improves the rapid shape recovery of shape-memory PU and halves the actuation time of neat PU under NIR irradiation (Figure 6). [125][126][127] Given their polar oxygen and Ag-oxygen bonding abilities, hybrid CD/Ag NMs can be covalently bonded to hyperbranched PU hard segment matrices to increase energy storage, conferring strain release and enabling rapid self-expansion to fill tissue defect gaps. 128 Notably, the enhancement of NM dispersion in PU composites is key for the improvement of PU mechanical properties.…”

Section: Enhanced Mechanical Propertiesmentioning

confidence: 99%

Biological Effects, Applications and Design Strategies of Medical Polyurethanes Modified by Nanomaterials

Wang

Dai

Xie

et al. 2022

IJN

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Polyurethane (PU) has wide application and popularity as medical apparatus due to its unique structural properties relationship. However, there are still some problems with medical PUs, such as a lack of functionality, insufficient long-term implantation safety, undesired stability, etc. With the rapid development of nanotechnology, the nanomodification of medical PU provides new solutions to these clinical problems. The introduction of nanomaterials could optimize the biocompatibility, antibacterial effect, mechanical strength, and degradation of PUs via blending or surface modification, therefore expanding the application range of medical PUs. This review summarizes the current applications of nano-modified medical PUs in diverse fields. Furthermore, the underlying mechanisms in efficiency optimization are analyzed in terms of the enhanced biological and mechanical properties critical for medical use. We also conclude the preparation schemes and related parameters of nano-modified medical PUs, with discussions about the limitations and prospects. This review indicates the current status of nano-modified medical PUs and contributes to inspiring novel and appropriate designing of PUs for desired clinical requirements.

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“…In order to expand the possibilities of the practical application of PBIs, it is necessary to impart additional functional properties to materials based on them, such as the high-temperature shape-memory effect. High-temperature shape-memory polymers (SMPs) have great potential for practical applications in the development of deployable space structures, smart jet propulsion systems, engine controls and high-temperature actuators [ 19 , 20 , 21 , 22 , 23 , 24 ]. SMPs contain rigid segments that can be formed by covalent crosslinking or hydrogen bonding, as well as crystalline, liquid-crystalline or amorphous soft block domains.…”

Section: Introductionmentioning

confidence: 99%

Aliphatic Polybenzimidazoles: Synthesis, Characterization and High-Temperature Shape-Memory Performance

et al. 2023

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A series of aliphatic polybenzimidazoles (PBIs) with methylene groups of varying length were synthesized by the high-temperature polycondensation of 3,3′-diaminobenzidine (DAB) and the corresponding aliphatic dicarboxylic acid in Eaton’s reagent. The influence of the length of the methylene chain on PBIs’ properties was investigated by solution viscometry, thermogravimetric analysis, mechanical testing and dynamic mechanical analysis. All PBIs exhibited high mechanical strength (up to 129.3 ± 7.1 MPa), glass transition temperature (≥200 °C) and thermal decomposition temperature (≥460 °C). Moreover, all of the synthesized aliphatic PBIs possess a shape-memory effect, which is a result of the presence of soft aliphatic segments and rigid bis-benzimidazole groups in the macromolecules, as well as strong intermolecular hydrogen bonds that serve as non-covalent crosslinks. Among the studied polymers, the PBI based on DAB and dodecanedioic acid has high adequate mechanical and thermal properties and demonstrates the highest shape-fixity ratio and shape-recovery ratio of 99.6% and 95.6%, respectively. Because of these properties, aliphatic PBIs have great potential to be used as high-temperature materials for application in different high-tech fields, including the aerospace industry and structural component industries.

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Shape memory polymer nanocomposite: a review on structure–property relationship

Cited by 49 publications

References 267 publications

Shape memory polymer-based prefabricated components: Design ideas and prospects

Shape memory polymer-based prefabricated components: Design ideas and prospects

Biological Effects, Applications and Design Strategies of Medical Polyurethanes Modified by Nanomaterials

Aliphatic Polybenzimidazoles: Synthesis, Characterization and High-Temperature Shape-Memory Performance

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