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Yang L, Lou J, Yuan J, Deng J. A review of shape memory polymers based on the intrinsic structures of their responsive switches. RSC Adv 2021; 11:28838-28850. [PMID: 35478574 PMCID: PMC9038180 DOI: 10.1039/d1ra04434f] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/23/2021] [Indexed: 12/30/2022] Open
Abstract
Shape memory polymers (SMPs), as stimuli-responsive materials, have attracted worldwide attention. Based on the history and development of SMPs, a variety of reports about SMPs in recent years are summarized in this paper. The responsive switches are analyzed and divided into two kinds according to their intrinsic structures: physical switch and chemical one. Then, detailed classification and comprehensive discussion of SMPs are further elaborated, based on the intrinsic structures of responsive switches and stimulation types. Finally, the development and prospect of SMPs are objectively predicted and forecasted.
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Affiliation(s)
- Lide Yang
- College of Materials Science and Engineering, Hunan University Changsha 410082 P. R. China
| | - Jiankun Lou
- College of Materials Science and Engineering, Hunan University Changsha 410082 P. R. China
| | - Jianmin Yuan
- College of Materials Science and Engineering, Hunan University Changsha 410082 P. R. China
| | - Jianru Deng
- College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
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Ge Y, Wang H, Xue J, Jiang J, Liu Z, Liu Z, Li G, Zhao Y. Programmable Humidity-Responsive Actuation of Polymer Films Enabled by Combining Shape Memory Property and Surface-Tunable Hygroscopicity. ACS APPLIED MATERIALS & INTERFACES 2021; 13:38773-38782. [PMID: 34369771 DOI: 10.1021/acsami.1c11862] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Most humidity-responsive polymeric actuators can only exhibit shape transformations between a planar shape in the dry state and a bended three-dimensional (3D) shape when exposed to moisture, and it is challenging to design and prepare hygroscopic actuators with programmable actuating behaviors displayed from sophisticated 3D structures. Herein, we demonstrate that the integration of shape memory property and surface treatment enabled hygromorphic responsivity endows a single-component polymer film with programmable moisture-driven actuating behaviors. The solvent-processed polyethylene-co-acrylic acid (EAA) copolymer film is soft and stretchable at room temperature, and has a good thermal-responsive shape memory property. By surface treatment using base/acid solutions, the reversible gradient conversion between carboxyl groups and carboxylate salts along the thickness direction enables the film to exhibit designed hygroscopic actuations. The shape memory property and moisture-driven actuating behaviors can be combined to realize 3D-3D morphing by first programming the films into 3D shapes and then conducting the surface treatments. Both shape programming and surface treatment processes can be reprogrammed to make the actuation behavior readily tunable. We also show that the created surface patterns can act as moisture-sensitive conducting paths to detect human breathes, and the combination of shape memory, moisture-responsive morphing and conductivity change leads to some interesting applications such as smart switch in conducting circuit. This work provides a new and general strategy for the design of advanced humidity-responsive actuators.
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Affiliation(s)
- Yuhua Ge
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
| | - Hanxiao Wang
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
| | - Jieying Xue
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
| | - Jinqiang Jiang
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
| | - Zhaotie Liu
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
| | - Zhongwen Liu
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
| | - Guo Li
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
| | - Yue Zhao
- Département de chimie, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
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Chen S, John JV, McCarthy A, Carlson MA, Li X, Xie J. Fast transformation of 2D nanofiber membranes into pre-molded 3D scaffolds with biomimetic and oriented porous structure for biomedical applications. APPLIED PHYSICS REVIEWS 2020; 7:021406. [PMID: 32494338 PMCID: PMC7233601 DOI: 10.1063/1.5144808] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 04/06/2020] [Indexed: 05/24/2023]
Abstract
The ability to transform two-dimensional (2D) structures into three-dimensional (3D) structures leads to a variety of applications in fields such as soft electronics, soft robotics, and other biomedical-related fields. Previous reports have focused on using electrospun nanofibers due to their ability to mimic the extracellular matrix. These studies often lead to poor results due to the dense structures and small poor sizes of 2D nanofiber membranes. Using a unique method of combining innovative gas-foaming and molding technologies, we report the rapid transformation of 2D nanofiber membranes into predesigned 3D scaffolds with biomimetic and oriented porous structure. By adding a surfactant (pluronic F-127) to poly(ε-caprolactone) (PCL) nanofibers, the rate of expansion is dramatically enhanced due to the increase in hydrophilicity and subsequent gas bubble stability. Using this novel method together with molding, 3D objects with cylindrical, hollow cylindrical, cuboid, spherical, and irregular shapes are created. Interestingly, these 3D shapes exhibit anisotropy and consistent pore sizes throughout entire object. Through further treatment with gelatin, the scaffolds become superelastic and shape-recoverable. Additionally, gelatin-coated, cube-shaped scaffolds were further functionalized with polypyrrole coatings and exhibited dynamic electrical conductivity during cyclic compression. Cuboid-shaped scaffolds have been demonstrated to be effective for compressible hemorrhage in a porcine liver injury model. In addition, human neural progenitor cells can be uniformly distributed and differentiated into neurons throughout the cylinder-shaped nanofiber scaffolds, forming ordered 3D neural tissue constructs. Taken together, the approach presented in this study is very promising in the production of pre-molded 3D nanofiber scaffolds for many biomedical applications.
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Affiliation(s)
- Shixuan Chen
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Johnson V. John
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Alec McCarthy
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Mark A. Carlson
- Department of Surgery-General Surgery, University of Nebraska Medical Center, Omaha, Nebraska 68198 and Department of Surgery, Omaha VA Medical Center, Omaha, Nebraska 68105, USA
| | - Xiaowei Li
- Department of Neurological Sciences and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
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Ifijen IH, Ikhuoria EU. A simple technique for the fabrication of P(St-BA-AA) colloidal crystal microdots on ink-jet paper. Heliyon 2020; 6:e04196. [PMID: 32566794 PMCID: PMC7298537 DOI: 10.1016/j.heliyon.2020.e04196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/27/2020] [Accepted: 06/08/2020] [Indexed: 11/19/2022] Open
Abstract
The generation of three-dimensional superb packages of compact hexagonal periodic assembly with multifaceted layers was demonstrated using Poly (styrene-butylcrylate-acrylic acid) on glass substrates. The synthesized P(St-BA-AA) microspheres were used to formulate a fast drying UV curable terpolymer microspheres printing ink for the generation of colloidal crystal microdots on ink-jet paper with remarkable colours. The terpolymer microspheres and their formulated terpolymer ink undergo self-assembly to form blue monochromatic and viewing angle dependent tunable colours, thus affirming the photonic nature of the generated colloidal crystal films. Unlike other printing techniques which usually make use of specialized tools, this study generated a well ordered coloured tunable assembly of spherical shaped core-shell colloidal crystal microdots on the surface of an inkjet-paper by manually writing the as-synthesized P(St-BA-AA) UV curable printing ink microdots on it. The TEM analysis showed core and shell sizes of 198/50nm and 176/30nm for P(St-BA-AA)1 and P(St- BA-AA)2 respectively. Whenever the prepared terpolymer microspheres are used within the heating and transition temperatures of 383 °C and 110 °C, their thermal stability is retained. This simple technique of generating crystals microdots on inkjet paper may find use in optical devices, security applications and other colour coating applications.
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Affiliation(s)
- Ikhazuagbe Hilary Ifijen
- Product Development Laboratory, Rubber Research Institute of Nigeria, P. M. B. 1049, Benin City, Nigeria
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Jiang Z, Tan ML, Taheri M, Yan Q, Tsuzuki T, Gardiner MG, Diggle B, Connal LA. Strong, Self‐Healable, and Recyclable Visible‐Light‐Responsive Hydrogel Actuators. Angew Chem Int Ed Engl 2020; 59:7049-7056. [DOI: 10.1002/anie.201916058] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 01/20/2020] [Indexed: 01/12/2023]
Affiliation(s)
- Zhen Jiang
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Ming Li Tan
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Mahdiar Taheri
- Research School of Electrical, Energy, and Materials Engineering Australian National University Canberra ACT 2601 Australia
| | - Qiao Yan
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Takuya Tsuzuki
- Research School of Electrical, Energy, and Materials Engineering Australian National University Canberra ACT 2601 Australia
| | - Michael G. Gardiner
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Broden Diggle
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Luke A. Connal
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
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Jiang Z, Tan ML, Taheri M, Yan Q, Tsuzuki T, Gardiner MG, Diggle B, Connal LA. Strong, Self‐Healable, and Recyclable Visible‐Light‐Responsive Hydrogel Actuators. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916058] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Zhen Jiang
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Ming Li Tan
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Mahdiar Taheri
- Research School of Electrical, Energy, and Materials Engineering Australian National University Canberra ACT 2601 Australia
| | - Qiao Yan
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Takuya Tsuzuki
- Research School of Electrical, Energy, and Materials Engineering Australian National University Canberra ACT 2601 Australia
| | - Michael G. Gardiner
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Broden Diggle
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Luke A. Connal
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
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Miao JT, Ge M, Peng S, Zhong J, Li Y, Weng Z, Wu L, Zheng L. Dynamic Imine Bond-Based Shape Memory Polymers with Permanent Shape Reconfigurability for 4D Printing. ACS APPLIED MATERIALS & INTERFACES 2019; 11:40642-40651. [PMID: 31577114 DOI: 10.1021/acsami.9b14145] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Shape memory polymer (SMP)-based 4D printing combines the advantages of SMP and 3D printing to form active materials with delicate structure. Nowadays, studies of SMP-based 4D printing materials mainly focus on cross-linked (meth)acrylate of which the permanent shape cannot be changed for their covalent linkage, limiting the usage of 4D printing materials. In this paper, a novel (meth)acrylate monomer with an aldehyde group (2-(methacryloyloxy)ethyl 4-formylbenzoate, MEFB) and hyperbranched cross-linker (HPASi) are synthesized to build (meth)acrylate systems (IEMSis) with dynamic imine bonds for 4D printing. The flexible chain structure of HPASi significantly enhances the toughness of IEMSis, which is 33-97-fold higher than that of the one without HPASi (IEM). The addition of HPASi also endows IEMSis good shape memory properties, and the shape fixity and shape recovery ratios of them are 97.5-97.6 and 91.4-93.7%, respectively. At the same time, IEMSis can undergo a stress relaxation process by dynamic exchanges of imine bonds under relatively mild conditions without a catalyst to acquire an ability of permanent shape reconfiguration. The shape retention ratio of IEMSi3 is 84.3%. In addition, the 4D-printed structures displayed here indicate that these 4D printing systems have a myriad of potential applications including aerospace structures, soft robotic grippers, smart electron switches, and intelligent packaging, while the reconfigurability shown by IEMSi3 will expand the scope of application fields of 4D printing materials.
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Affiliation(s)
- Jia-Tao Miao
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002 , People's Republic of China
| | - Meiying Ge
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002 , People's Republic of China
| | - Shuqiang Peng
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Jie Zhong
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002 , People's Republic of China
| | - Yuewei Li
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Zixiang Weng
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002 , People's Republic of China
| | - Lixin Wu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002 , People's Republic of China
| | - Longhui Zheng
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002 , People's Republic of China
- Fujian Universities and Colleges Engineering Research Center of Soft Plastic Packaging Technology for Food , Fuzhou 350300 , People's Republic of China
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