1
|
Kotova S, Kostjuk S, Rochev Y, Efremov Y, Frolova A, Timashev P. Phase transition and potential biomedical applications of thermoresponsive compositions based on polysaccharides, proteins and DNA: A review. Int J Biol Macromol 2023; 249:126054. [PMID: 37532189 DOI: 10.1016/j.ijbiomac.2023.126054] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/04/2023]
Abstract
Smart thermoresponsive polymers have long attracted attention as materials of a great potential for biomedical applications, mainly for drug delivery, tissue engineering and wound dressing, with a special interest to injectable hydrogels. Poly-N-isopropylacrylamide (PNIPAM) is the most important synthetic thermoresponsive polymer due to its physiologically relevant transition temperature. However, the use of unmodified PNIPAM encounters such problems as low biodegradability, low drug loading capacity, slow response to thermal stimuli, and insufficient mechanical robustness. The use of natural polysaccharides and proteins in combinations with PNIPAM, in the form of grafted copolymers, IPNs, microgels and physical mixtures, is aimed at overcoming these drawbacks and creating dual-functional materials with both synthetic and natural polymers' properties. When developing such compositions, special attention should be paid to preserving their key property, thermoresponsiveness. Addition of hydrophobic and hydrophilic fragments to PNIPAM is known to affect its transition temperature. This review covers various classes of natural polymers - polysaccharides, fibrous and non-fibrous proteins, DNA - used in combination with PNIPAM for the prospective biomedical purposes, with a focus on their phase transition temperatures and its relation to the natural polymer's structure.
Collapse
Affiliation(s)
- Svetlana Kotova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia.
| | - Sergei Kostjuk
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia; Department of Chemistry, Belarusian State University, Minsk 220006, Belarus; Research Institute for Physical Chemical Problems of the Belarusian State University, Minsk 220006, Belarus
| | - Yuri Rochev
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia; National University of Ireland Galway, Galway H91 CF50, Ireland
| | - Yuri Efremov
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia
| | - Anastasia Frolova
- World-Class Research Center "Digital Biodesign and Personalized Healthcare", Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia
| | - Peter Timashev
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia; World-Class Research Center "Digital Biodesign and Personalized Healthcare", Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia; N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow 119991, Russia; Chemistry Department, Lomonosov Moscow State University, Moscow 119991, Russia
| |
Collapse
|
2
|
Yilmaz RB, Chaabane Y, Mansard V. Development of a Soft Actuator from Fast Swelling Macroporous PNIPAM Gels for Smart Braille Device Applications in Haptic Technology. ACS APPLIED MATERIALS & INTERFACES 2023; 15:7340-7352. [PMID: 36706224 DOI: 10.1021/acsami.2c17835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The development of a cost-efficient braille device is a crucial challenge in haptic technology to improve the integration of visually impaired people. Exclusion of any group threatens the proper functioning of society. Commercially available braille devices still utilize piezoelectric actuators, which are expensive and bulky. The challenge of a more adapted braille device lies in the integration of a high number of actuators─on a millimeter scale─in order to independently move a matrix of pins acting as tactile cues. Unfortunately, no actuation strategy has been adapted to tackle this challenge. In this study, we develop a soft actuator based on a thermosensitive poly(N-isopropylacrylamide) (PNIPAM) gel. We introduce macroporosity to the gel (pores of 10 to 100 μm). It overcomes the diffusion─which is the limiting kinetic factor─and accelerates the gel response time from hours for the bulk gel to seconds for the macroporous gel. We study the properties of porous gels with various porosities. We also compare a mechanically reinforced nanocomposite gel (made of PNIPAM and Laponite clay) to a "classic" gel. As a result, we develop a fast-actuating gel with high cyclic performance. We then develop a single-pin braille setup, where actuation is controlled thanks to a swift temperature control of a macroporous gel cylinder. This new strategy offers a very promising actuation technology. It offers a simple and cost-efficient alternative to the current braille devices.
Collapse
Affiliation(s)
- Refik Baris Yilmaz
- CNRS, LAAS-CNRS, 7, avenue du Colonel Roche, BP 54200 31031 Toulouse Cedex 4, France
| | - Yosr Chaabane
- CNRS, LAAS-CNRS, 7, avenue du Colonel Roche, BP 54200 31031 Toulouse Cedex 4, France
| | - Vincent Mansard
- CNRS, LAAS-CNRS, 7, avenue du Colonel Roche, BP 54200 31031 Toulouse Cedex 4, France
| |
Collapse
|
3
|
Wang J, Guo M. Thermo-responsive, Mechanically-robust and 3D Printable Supramolecular Hydrogels. Polym Chem 2022. [DOI: 10.1039/d2py00127f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, poly(N-isopropylacrylamide) (PNIPAm) grafted and multi-urea linkage segmented linear polyurethane-urea (PUU) copolymers were synthesized using α-dihydroxyl terminated PNIPAm as chain extender and water as an indirect chain extender,respectively....
Collapse
|
4
|
Long Y, Cheng X, Tang Q, Chen L. The antigenicity of silk-based biomaterials: sources, influential factors and applications. J Mater Chem B 2021; 9:8365-8377. [PMID: 34542139 DOI: 10.1039/d1tb00752a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Silk is an ancient material with essential roles in numerous biomedical applications, such as tissue regeneration and drug delivery, because of its excellent tunable mechanical properties and diverse physical structures. In addition to the necessary functionalities for biomedical applications, another critical factor for materials applied in biology is the appropriate immune interactions with the body. This review focuses on the immune responses of silk-based materials applied in biomedical applications, specifically antigenicity. The factors affecting the antigenicity of silk-based materials are complicated and are related to the composition and structural characteristics of the materials. At the same time, the composition of silk-based materials varies with its species sources, such as silkworms, spiders, honey bees, or engineered recombinant silk. Additionally, different processing methods are used to fabricate different material formats, such as films, hydrogels, scaffolds, particles, and fibers, resulting in different structural characteristics. Furthermore, the resulting body reactions are also different with different degrees of the immune response. Silk protein typically induces a mild immune response, and immunogenicity can play active roles in osteogenesis, angiogenesis, and protection from inflammation. However, there are some rare reports of severe immune responses caused by silk, which can result in an allergic response or tissue necrosis. The source of allergenicity in silk-based materials is currently under-studied and how to regulate and eliminate the overreaction of the immune system is essential for further applications. Overall, the diverse characteristics of silk-based materials mostly show beneficial bioresponses with mild immunogenicity, and the tunable properties make it applicable in immune-related biomedical applications.
Collapse
Affiliation(s)
- Yanlin Long
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. .,School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Xian Cheng
- Department of Dentistry - Biomaterials, Radboud University Medical Center, Philips van Leydenlaan 25, 6525 EX Nijmegen, The Netherlands
| | - Qingming Tang
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. .,School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Lili Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. .,School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| |
Collapse
|
5
|
Eklund A, Zhang H, Zeng H, Priimagi A, Ikkala O. Fast Switching of Bright Whiteness in Channeled Hydrogel Networks. ADVANCED FUNCTIONAL MATERIALS 2020; 30:2000754. [PMID: 32684907 PMCID: PMC7357574 DOI: 10.1002/adfm.202000754] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/26/2020] [Accepted: 04/15/2020] [Indexed: 05/22/2023]
Abstract
Beside pigment absorption and reflection by periodic photonic structures, natural species often use light scattering to achieve whiteness. Synthetic hydrogels offer opportunities in stimuli-responsive materials and devices; however, they are not conventionally considered as ideal materials to achieve high whiteness by scattering due to the ill-defined porosities and the low refractive index contrast between the polymer and water. Herein, a poly(N-isopropylacrylamide) hydrogel network with percolated empty channels (ch-PNIPAm) is demonstrated to possess switchable bright whiteness upon temperature changes, obtained by removing the physical agarose gel in a semi-interpenetrating network of agarose and PNIPAm. The hydrogel is highly transparent at room temperature and becomes brightly white above 35 °C. Compared to conventional PNIPAm, the ch-PNIPAm hydrogel exhibits 80% higher reflectance at 800 nm and 18 times faster phase transition kinetics. The nanoscopic channels in the ch-PNIPAm facilitate water diffusion upon phase transition, thus enabling the formation of smaller pores and enhanced whiteness in the gel. Furthermore, fast photothermally triggered response down to tens of milliseconds can be achieved. This unique property of the ch-PNIPAm hydrogel to efficiently scatter visible light can be potentially used for, e.g., smart windows, optical switches, and, as demonstrated in this report, thermoresponsive color displays.
Collapse
Affiliation(s)
- Amanda Eklund
- Department of Applied PhysicsAalto UniversityP.O. Box 15100EspooFI 02150Finland
| | - Hang Zhang
- Department of Applied PhysicsAalto UniversityP.O. Box 15100EspooFI 02150Finland
| | - Hao Zeng
- Smart Photonic MaterialsFaculty of Engineering and Natural SciencesTampere UniversityP.O. Box 541TampereFI‐33101Finland
| | - Arri Priimagi
- Smart Photonic MaterialsFaculty of Engineering and Natural SciencesTampere UniversityP.O. Box 541TampereFI‐33101Finland
| | - Olli Ikkala
- Department of Applied PhysicsAalto UniversityP.O. Box 15100EspooFI 02150Finland
| |
Collapse
|
6
|
Poppinga S, Correa D, Bruchmann B, Menges A, Speck T. Plant Movements as Concept Generators for the Development of Biomimetic Compliant Mechanisms. Integr Comp Biol 2020; 60:886-895. [PMID: 32396604 DOI: 10.1093/icb/icaa028] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Plant movements are of increasing interest for biomimetic approaches where hinge-free compliant mechanisms (flexible structures) for applications, for example, in architecture, soft robotics, and medicine are developed. In this article, we first concisely summarize the knowledge on plant movement principles and show how the different modes of actuation, that is, the driving forces of motion, can be used in biomimetic approaches for the development of motile technical systems. We then emphasize on current developments and breakthroughs in the field, that is, the technical implementation of plant movement principles through additive manufacturing, the development of structures capable of tracking movements (tropisms), and the development of structures that can perform multiple movement steps. Regarding the additive manufacturing section, we present original results on the successful transfer of several plant movement principles into 3D printed hygroscopic shape-changing structures ("4D printing"). The resulting systems include edge growth-driven actuation (as known from the petals of the lily flower), bending scale-like structures with functional bilayer setups (inspired from pinecones), modular aperture architectures (as can be similarly seen in moss peristomes), snap-through elastic instability actuation (as known from Venus flytrap snap-traps), and origami-like curved-folding kinematic amplification (inspired by the carnivorous waterwheel plant). Our novel biomimetic compliant mechanisms highlight the feasibility of modern printing techniques for designing and developing versatile tailored motion responses for technical applications. We then focus on persisting challenges in the field, that is, how to speed-boost intrinsically slow hydraulically actuated structures and how to achieve functional resilience and robustness, before we propose the establishment of a motion design catalog in the conclusion.
Collapse
Affiliation(s)
- Simon Poppinga
- Plant Biomechanics Group, Botanic Garden, University of Freiburg, Freiburg im Breisgau, Germany.,Freiburg Materials Research Center (FMF), University of Freiburg, Freiburg im Breisgau, Germany
| | - David Correa
- Institute for Computational Design and Construction (ICD), University of Stuttgart, Stuttgart, Germany.,School of Architecture, University of Waterloo, Cambridge, ON, Canada
| | - Bernd Bruchmann
- BASF SE Advanced Materials and Systems Research, Ludwigshafen, Germany
| | - Achim Menges
- School of Architecture, University of Waterloo, Cambridge, ON, Canada
| | - Thomas Speck
- Plant Biomechanics Group, Botanic Garden, University of Freiburg, Freiburg im Breisgau, Germany.,Freiburg Materials Research Center (FMF), University of Freiburg, Freiburg im Breisgau, Germany.,Cluster of Excellence livMatS @ Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Freiburg im Breisgau, Germany
| |
Collapse
|
7
|
Liu J, Fan X, Tao Y, Deng C, Yu K, Zhang W, Deng L, Xiong W. Two-Step Freezing Polymerization Method for Efficient Synthesis of High-Performance Stimuli-Responsive Hydrogels. ACS OMEGA 2020; 5:5921-5930. [PMID: 32226872 PMCID: PMC7098024 DOI: 10.1021/acsomega.9b04224] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 02/19/2020] [Indexed: 06/01/2023]
Abstract
The widespread use of stimuli-responsive hydrogels is closely related to their synthesis efficiency. However, the widely used thermal-responsive poly(N-isopropylacrylamide) (PNIPAM) hydrogels usually require a time-consuming synthesis process to produce (more than 12 h) and exhibit a relatively slow response speed in the field of cryo-polymerization. In this study, a sequence of thawing polymerization after freezing polymerization by a two-step method of free radical polymerization for the efficient synthesis of PNIPAM hydrogels (merely 2 h) with an excellent comprehensive performance is demonstrated. Results show that the overall performance of the as-synthesized PNIPAM hydrogels is at the top level among reported works despite the significantly reduced preparation time. Moreover, after incorporating multi-walled carbon nanotubes (MWNTs), the PNIPAM hydrogels exhibit a rapid near-infrared (NIR) light-response and programmable shape-morphing capability. It is believed that such a viable and time-saving synthetic method for producing PNIPAM hydrogels of high performance will lay a solid foundation for drug delivery and smart actuators.
Collapse
Affiliation(s)
- Jingwei Liu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Xuhao Fan
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Yufeng Tao
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Chunsan Deng
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Kewang Yu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Wenguang Zhang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Leimin Deng
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Wei Xiong
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| |
Collapse
|
8
|
Liu K, Cao H, Yuan W, Bao Y, Shan G, Wu ZL, Pan P. Stereocomplexed and homocrystalline thermo-responsive physical hydrogels with a tunable network structure and thermo-responsiveness. J Mater Chem B 2020; 8:7947-7955. [DOI: 10.1039/d0tb01484b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Robust thermo-responsive physical hydrogels with a tunable network structure and thermo-responsiveness were developed by controlling the crystallization of hydrophobic blocks.
Collapse
Affiliation(s)
- Kangkang Liu
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Heqing Cao
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Wenhua Yuan
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Yongzhong Bao
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Guorong Shan
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Zi Liang Wu
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Pengju Pan
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| |
Collapse
|
9
|
Jena DK, Sahoo PK. New strategies for the construction of eggshell powder reinforced starch based fire hazard suppression biomaterials with tailorable thermal, mechanical and oxygen barrier properties. Int J Biol Macromol 2019; 140:496-504. [PMID: 31437511 DOI: 10.1016/j.ijbiomac.2019.08.156] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 08/15/2019] [Accepted: 08/17/2019] [Indexed: 11/30/2022]
Abstract
A novel eco-friendly approach is highlighted for synthesizing chicken eggshell powder (EP) modified starch-g-poly(N-isopropylacrylamide) (starch-g-PNIPAAm) bionanocomposites (BNCs) by emulsifier-free emulsion polymerisation and aiming to study the effect of EP on the properties of modified starch BNCs. Young's modulus and tensile strength of BNCs are found to be improved dramatically. The enhanced char forming ability of EP improves the thermal stability of BNCs at high temperature as investigated by thermogravimetric analyses carried out in inert atmosphere. The cone calorimeter test revealed that the 4% w/v EP-based BNC resulted suppression on fire hazards in terms of reduction in PHRR (decreased by 33.3%), PSPR (decreased by 75.3%) compared with those of the control starch-g-PNIPAAm and could be attributed to the insulating barrier effect of EP. In addition, the fire retardancy of the BNCs is investigated from limiting oxygen index (LOI) test. The surface morphology and the elemental content of the collected char residues of BNCs after fire retardant test is analysed by FESEM and EDX. Further the oxygen barrier property of BNC with 4% w/v EP is reduced by 73% compared to starch-g-PNIPAAm. The resulting nanostructure and molecular interactions in the BNCs are analysed by FTIR, XRD and TEM.
Collapse
Affiliation(s)
| | - Prafulla Kumar Sahoo
- Department of Chemistry, Utkal University, Vani Vihar, Bhubaneswar 751004, India.
| |
Collapse
|
10
|
Thakar H, Sebastian SM, Mandal S, Pople A, Agarwal G, Srivastava A. Biomolecule-Conjugated Macroporous Hydrogels for Biomedical Applications. ACS Biomater Sci Eng 2019; 5:6320-6341. [DOI: 10.1021/acsbiomaterials.9b00778] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
11
|
Chen S, Matsumoto H, Moro-oka Y, Tanaka M, Miyahara Y, Suganami T, Matsumoto A. Smart Microneedle Fabricated with Silk Fibroin Combined Semi-interpenetrating Network Hydrogel for Glucose-Responsive Insulin Delivery. ACS Biomater Sci Eng 2019; 5:5781-5789. [DOI: 10.1021/acsbiomaterials.9b00532] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Siyuan Chen
- Kanagawa Institute of Industrial Science and Technology, Kanagawa 213-0012, Japan
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo 101-0062, Japan
| | - Hiroko Matsumoto
- Kanagawa Institute of Industrial Science and Technology, Kanagawa 213-0012, Japan
| | - Yuki Moro-oka
- Kanagawa Institute of Industrial Science and Technology, Kanagawa 213-0012, Japan
| | - Miyako Tanaka
- Department of Molecular Medicine and Metabolism, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan
| | - Yuji Miyahara
- Kanagawa Institute of Industrial Science and Technology, Kanagawa 213-0012, Japan
| | - Takayoshi Suganami
- Department of Molecular Medicine and Metabolism, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan
| | - Akira Matsumoto
- Kanagawa Institute of Industrial Science and Technology, Kanagawa 213-0012, Japan
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo 101-0062, Japan
| |
Collapse
|
12
|
Bi J, Song K, Wu S, Zhang Y, Wang Y, Liu T. Effect of thermal-responsive surfaces based on PNIPAAm on cell adsorption/desorption. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2016.1252359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Jiajie Bi
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian, China
| | - Kedong Song
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian, China
| | - Suli Wu
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian, China
| | - Yu Zhang
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian, China
| | - Yiwei Wang
- Burns Research Group, ANZAC Research Institute, University of Sydney, Concord, New South Wales, Australia
| | - Tianqing Liu
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian, China
| |
Collapse
|
13
|
Zong L, Li X, Han X, Lv L, Li M, You J, Wu X, Li C. Activation of Actuating Hydrogels with WS 2 Nanosheets for Biomimetic Cellular Structures and Steerable Prompt Deformation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:32280-32289. [PMID: 28828853 DOI: 10.1021/acsami.7b10348] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Macroscopic soft actuation is intrinsic to living organisms in nature, including slow deformation (e.g., contraction, bending, twisting, and curling) of plants motivated by microscopic swelling and shrinking of cells, and rapid motion of animals (e.g., deformation of jellyfish) motivated by cooperative nanoscale movement of motor proteins. These actuation behaviors, with an exceptional combination of tunable speed and programmable deformation direction, inspire us to design artificial soft actuators for broad applications in artificial muscles, nanofabrication, chemical valves, microlenses, soft robotics, etc. However, so far artificial soft actuators have been typically produced on the basis of poly(N-isopropylacrylamide) (PNiPAM), whose deformation is motived by volumetric shrinkage and swelling in analogue to plant cells, and exhibits sluggish actuation kinetics. In this study, alginate-exfoliated WS2 nanosheets were incorporated into ice-template-polymerized PNiPAM hydrogels with the cellular microstructures which mimic plant cells, yet the prompt steerable actuation of animals. Because of the nanosheet-reinforced pore walls formed in situ in freezing polymerization and reasonable hierarchical water channels, this cellular hybrid hydrogel achieves super deformation speed (on the order of magnitude of 10° s), controllable deformation direction, and high near-infrared light responsiveness, offering an unprecedented platform of artificial muscles for various soft robotics and devices (e.g., rotator, microvalve, aquatic swimmer, and water-lifting filter).
Collapse
Affiliation(s)
- Lu Zong
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Songling Road 189, Qingdao 266101, P. R. China
- University of Chinese Academy of Sciences , 19A Yuquan Road, Beijing 100049, P. R. China
| | - Xiankai Li
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Songling Road 189, Qingdao 266101, P. R. China
- University of Chinese Academy of Sciences , 19A Yuquan Road, Beijing 100049, P. R. China
| | - Xiangsheng Han
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Songling Road 189, Qingdao 266101, P. R. China
- University of Chinese Academy of Sciences , 19A Yuquan Road, Beijing 100049, P. R. China
| | - Lili Lv
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Songling Road 189, Qingdao 266101, P. R. China
- University of Chinese Academy of Sciences , 19A Yuquan Road, Beijing 100049, P. R. China
| | - Mingjie Li
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Songling Road 189, Qingdao 266101, P. R. China
| | - Jun You
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Songling Road 189, Qingdao 266101, P. R. China
| | - Xiaochen Wu
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Songling Road 189, Qingdao 266101, P. R. China
| | - Chaoxu Li
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Songling Road 189, Qingdao 266101, P. R. China
- University of Chinese Academy of Sciences , 19A Yuquan Road, Beijing 100049, P. R. China
- Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province (Qingdao University) , 308 Ningxia Road, Qingdao 266071, P. R. China
| |
Collapse
|
14
|
Brown JE, Moreau JE, Berman AM, McSherry HJ, Coburn JM, Schmidt DF, Kaplan DL. Shape Memory Silk Protein Sponges for Minimally Invasive Tissue Regeneration. Adv Healthc Mater 2017; 6:10.1002/adhm.201600762. [PMID: 27863133 PMCID: PMC5266640 DOI: 10.1002/adhm.201600762] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 08/30/2016] [Indexed: 12/20/2022]
Abstract
Porous silk protein scaffolds are designed to display shape memory characteristics and volumetric recovery following compression. Two strategies are utilized to realize shape recovery: addition of hygroscopic plasticizers like glycerol, and tyrosine modifications with hydrophilic sulfonic acid chemistries. Silk sponges are evaluated for recovery following 80% compressive strain, total porosity, pore size distribution, secondary structure development, in vivo volume retention, cell infiltration, and inflammatory responses. Glycerol-modified sponges recover up to 98.3% of their original dimensions following compression, while sulfonic acid/glycerol modified sponges swell in water up to 71 times their compressed volume, well in excess of their original size. Longer silk extraction times (lower silk molecular weights) and higher glycerol concentrations yielded greater flexibility and shape fidelity, with no loss in modulus following compression. Sponges are over 95% porous, with secondary structure analysis indicating glycerol-induced β-sheet physical crosslinking. Tyrosine modifications with sulfonic acid interfere with β-sheet formation. Glycerol-modified sponges exhibit improved rates of cellular infiltration at subcutaneous implant sites with minimal immune response in mice. They also degrade more rapidly than unmodified sponges, a result posited to be cell-mediated. Overall, this work suggests that silk sponges may be useful for minimally invasive deployment in soft tissue augmentation procedures.
Collapse
Affiliation(s)
- Joseph E. Brown
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155
| | - Jodie E. Moreau
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155
| | - Alison M. Berman
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155
| | | | - Jeannine M. Coburn
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155
| | - Daniel F. Schmidt
- Department of Plastics Engineering, University of Massachusetts Lowell, Lowell, MA, 01854
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155
| |
Collapse
|
15
|
Haq MA, Su Y, Wang D. Mechanical properties of PNIPAM based hydrogels: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 70:842-855. [PMID: 27770962 DOI: 10.1016/j.msec.2016.09.081] [Citation(s) in RCA: 275] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 09/13/2016] [Accepted: 09/29/2016] [Indexed: 11/26/2022]
Abstract
Materials which adjust their properties in response to environmental factors such as temperature, pH and ionic strength are rapidly evolving and known as smart materials. Hydrogels formed by smart polymers have various applications. Among the smart polymers, thermoresponsive polymer poly(N-isopropylacrylamide)(PNIPAM) is very important because of its well defined structure and property specially its temperature response is closed to human body and can be finetuned as well. Mechanical properties are critical for the performance of stimuli responsive hydrogels in diverse applications. However, native PNIPAM hydrogels are very fragile and hardly useful for any practical purpose. Intense researches have been done in recent decade to enhance the mechanical features of PNIPAM hydrogel. In this review, several strategies including interpenetrating polymer network (IPN), double network (DN), nanocomposite (NC) and slide ring (SR) hydrogels are discussed in the context of PNIPAM hydrogel.
Collapse
Affiliation(s)
- Muhammad Abdul Haq
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China; Laboratory of Food Engineering, Department of Food Science & Technology, University of Karachi, Karachi, Pakistan
| | - Yunlan Su
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| |
Collapse
|
16
|
Whittaker JL, Dutta NK, Zannettino A, Choudhury NR. Engineering DN hydrogels from regenerated silk fibroin and poly(N-vinylcaprolactam). J Mater Chem B 2016; 4:5519-5533. [PMID: 32263350 DOI: 10.1039/c6tb01055e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The development of novel hydrogels that possess adequate elasticity and toughness to withstand mechanically active environments, along with being biocompatible, remains a significant challenge in the design of materials for tissue engineering applications. In this study, a family of regenerated silk fibroin (RSF) based double network (DN) hydrogels were fabricated for the first time using a rapid one-pot method. The DN hydrogels combine the rigid covalently crosslinked RSF with the softer poly(N-vinylcaprolactam) (PVCL) through strong physical interactions. The formation of these DN hydrogels resulted in an improvement of the water uptake capacity, elasticity and toughness compared to the individual RSF hydrogel. The elasticity of the RSF/PVCL DN hydrogels was closer to that of native cartilage, which makes them promising materials for cartilage regeneration applications. An in vitro study on adhesion, proliferation and differentiation of a mouse pre-chondrocyte cell line (ATDC5) conducted using microscopic analysis, a cell proliferation assay and RT-PCR confirmed the cells cultured on the less stiff hydrogels demonstrated the most favourable chondrogenic response. Thus, this study demonstrates the potential of RSF-based hybrid hydrogels for cartilage tissue engineering applications.
Collapse
Affiliation(s)
- Jasmin L Whittaker
- Future Industries Institute, Mawson Lakes Campus, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia.
| | | | | | | |
Collapse
|
17
|
Kapoor S, Kundu SC. Silk protein-based hydrogels: Promising advanced materials for biomedical applications. Acta Biomater 2016; 31:17-32. [PMID: 26602821 DOI: 10.1016/j.actbio.2015.11.034] [Citation(s) in RCA: 264] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 11/08/2015] [Accepted: 11/17/2015] [Indexed: 01/20/2023]
Abstract
Hydrogels are a class of advanced material forms that closely mimic properties of the soft biological tissues. Several polymers have been explored for preparing hydrogels with structural and functional features resembling that of the extracellular matrix. Favourable material properties, biocompatibility and easy processing of silk protein fibers into several forms make it a suitable material for biomedical applications. Hydrogels made from silk proteins have shown a potential in overcoming limitations of hydrogels prepared from conventional polymers. A great deal of effort has been made to control the properties and to integrate novel topographical and functional characteristics in the hydrogel composed from silk proteins. This review provides overview of the advances in silk protein-based hydrogels with a primary emphasis on hydrogels of fibroin. It describes the approaches used to fabricate fibroin hydrogels. Attempts to improve the existing properties or to incorporate new features in the hydrogels by making composites and by improving fibroin properties by genetic engineering approaches are also described. Applications of the fibroin hydrogels in the realms of tissue engineering and controlled release are reviewed and their future potentials are discussed. STATEMENT OF SIGNIFICANCE This review describes the potentiality of silk fibroin hydrogel. Silk Fibroin has been widely recognized as an interesting biomaterial. Due to its properties including high mechanical strength and excellent biocompatibility, it has gained wide attention. Several groups are exploring silk-based materials including films, hydrogels, nanofibers and nanoparticles for different biomedical applications. Although there is a good amount of literature available on general properties and applications of silk based biomaterials, there is an inadequacy of extensive review articles that specifically focus on silk based hydrogels. Silk-based hydrogels have a strong potential to be utilized in biomedical applications. Our work is an effort to highlight the research that has been done in the area of silk-based hydrogels. It aims to provide an overview of the advances that have been made and the future course available. It will provide an overview of the silk-based hydrogels as well as may direct the readers to the specific areas of application.
Collapse
|
18
|
Rahikkala A, Aseyev V, Tenhu H, Kauppinen EI, Raula J. Thermoresponsive Nanoparticles of Self-Assembled Block Copolymers as Potential Carriers for Drug Delivery and Diagnostics. Biomacromolecules 2015. [DOI: 10.1021/acs.biomac.5b00690] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antti Rahikkala
- Department
of Applied Physics, Aalto University School of Science, FI-00079 Aalto, Finland
| | - Vladimir Aseyev
- Laboratory
of Polymer Chemistry, Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
| | - Heikki Tenhu
- Laboratory
of Polymer Chemistry, Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
| | - Esko I. Kauppinen
- Department
of Applied Physics, Aalto University School of Science, FI-00079 Aalto, Finland
| | - Janne Raula
- Department
of Applied Physics, Aalto University School of Science, FI-00079 Aalto, Finland
| |
Collapse
|
19
|
Jones JA, Harris TI, Tucker CL, Berg KR, Christy SY, Day BA, Gaztambide DA, Needham NJC, Ruben AL, Oliveira PF, Decker RE, Lewis RV. More Than Just Fibers: An Aqueous Method for the Production of Innovative Recombinant Spider Silk Protein Materials. Biomacromolecules 2015; 16:1418-25. [DOI: 10.1021/acs.biomac.5b00226] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Justin A. Jones
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| | - Thomas I. Harris
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| | - Chauncey L. Tucker
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| | - Kyle R. Berg
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| | - Stacia Y. Christy
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| | - Breton A. Day
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| | - Danielle A. Gaztambide
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| | - Nate J. C. Needham
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| | - Ashley L. Ruben
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| | - Paula F. Oliveira
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| | - Richard E. Decker
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| | - Randolph V. Lewis
- Departments
of Biology, ‡Biological Engineering, §Nutrition, Dietetics, and Food Sciences, and ∥Health, Physical
Education, and Recreation, Utah State University, Logan, Utah 84322, United States
| |
Collapse
|
20
|
A novel thermo-responsive hydrogel based on salecan and poly(N-isopropylacrylamide): Synthesis and characterization. Colloids Surf B Biointerfaces 2015; 125:1-11. [DOI: 10.1016/j.colsurfb.2014.10.057] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 09/19/2014] [Accepted: 10/28/2014] [Indexed: 11/19/2022]
|
21
|
Nara S, Chameettachal S, Midha S, Singh H, Tandon R, Mohanty S, Ghosh S. Strategies for faster detachment of corneal cell sheet using micropatterned thermoresponsive matrices. J Mater Chem B 2015; 3:4155-4169. [DOI: 10.1039/c5tb00350d] [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
Direct write assembly of parallel patterns of gelatin–poly(N-isopropylacrylamide) hybrids serve as suitable thermoresponsive material to develop patterned cell sheets of functional keratocytes for constructing a bioequivalent of corneal stroma.
Collapse
Affiliation(s)
- Sharda Nara
- Department of Textile Technology
- Indian Institute of Technology
- New Delhi
- India
| | - Shibu Chameettachal
- Department of Textile Technology
- Indian Institute of Technology
- New Delhi
- India
| | - Swati Midha
- Department of Textile Technology
- Indian Institute of Technology
- New Delhi
- India
| | - Himi Singh
- Stem Cell Facility
- All India Institute of Medical Sciences
- New Delhi
- India
| | - Radhika Tandon
- Rajendra Prasad Centre for Ophthalmic Sciences
- All India Institute of Medical Sciences
- New Delhi
- India
| | - Sujata Mohanty
- Stem Cell Facility
- All India Institute of Medical Sciences
- New Delhi
- India
| | - Sourabh Ghosh
- Department of Textile Technology
- Indian Institute of Technology
- New Delhi
- India
| |
Collapse
|
22
|
Neo PY, Shi P, Goh JCH, Toh SL. Characterization and mechanical performance study of silk/PVA cryogels: towards nucleus pulposus tissue engineering. Biomed Mater 2014; 9:065002. [DOI: 10.1088/1748-6041/9/6/065002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
23
|
Zhang Y, Ma Y, Sun J. Reversible actuation of polyelectrolyte films: expansion-induced mechanical force enables cis-trans isomerization of azobenzenes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:14919-14925. [PMID: 24215493 DOI: 10.1021/la403019z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Fabrication of light-driven actuators that can prolong their deformation without constant irradiation poses a challenge. This study shows the preparation of polymeric actuators that are capable of reversible bending/unbending movements and prolonging their bending deformation without UV irradiation by releasing thermally cross-linked azobenzene-containing polyelectrolyte films with a limited free volume from substrates. Layer-by-layer assembly of poly{1-4[4-(3-carboxy-4-hydroxyphenylazo)benzenesulfonamido]-1,2-ethanediyl sodium salt} (PAZO)-poly(acrylic acid) (PAA) complexes (noted as PAZO-PAA) with poly(allylamine hydrochloride) (PAH) produces azobenzene-containing PAZO-PAA/PAH films. UV irradiation induces trans-cis isomerization of azobenzenes and allows large-scale bending deformation of the actuators. The actuators prolong the bending deformation even under visible light irradiation because the cis-trans back isomerization of azobenzenes is inhibited by the limited free volume in the actuators. Unbending of actuators is attained by exposing the actuators to a humid environment at room temperature. Film expansion in a humid environment produces a mechanical force that is sufficiently strong to enable the cis-trans back isomerization of azobenzenes and restore the bent actuators to their original configuration. The capability of the force produced by film expansion for cis-trans azobenzene isomerization can be helpful for designing novel polymeric actuators.
Collapse
Affiliation(s)
- Yuanyuan Zhang
- State Key Laboratory of Supramolecular Structure and Material, College of Chemistry, Jilin University , Changchun 130012, P. R. China
| | | | | |
Collapse
|
24
|
White JC, Saffer EM, Bhatia SR. Alginate/PEO-PPO-PEO composite hydrogels with thermally-active plasticity. Biomacromolecules 2013; 14:4456-64. [PMID: 24147595 DOI: 10.1021/bm401373j] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Stimuli-responsive hydrogels with high strength and toughness have received significant interest in recent years. Here, we report thermally active composite hydrogels comprising alginate and one of two poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock copolymers. Temperature-sensitive structural and mechanical changes are probed using calorimetry, neutron scattering, shear rheology, unconfined compression, and fracture. Below the lower gelation temperature, LGT, the mechanical properties are dominated by alginate. As the LGT is reached, the contribution of PEO-PPO-PEO to the mechanical properties is activated, resulting in order-of-magnitude increases in elastic modulus. Under compression, we show the evolution of plasticity for the composite hydrogels as the LGT is approached and surpassed, resulting in dramatic increases in fracture stress compared to neat alginate hydrogels. Plasticity was observed above the LGT and may be attributed to restructuring from the sliding of packed micelles and strain-hardening due to stress concentration on alginate cross-links and junction zones, ultimately leading to fracture.
Collapse
Affiliation(s)
- Joseph C White
- Department of Chemical Engineering, University of Massachusetts Amherst , 159 Goessmann Lab, 686 North Pleasant Street, Amherst, Maine 01003, United States
| | | | | |
Collapse
|
25
|
Nykänen A, Rahikkala A, Hirvonen SP, Aseyev V, Tenhu H, Mezzenga R, Raula J, Kauppinen E, Ruokolainen J. Thermally sensitive block copolymer particles prepared via aerosol flow reactor method: Morphological characterization and behavior in water. Macromolecules 2012; 45:8401-8411. [PMID: 23150721 PMCID: PMC3494880 DOI: 10.1021/ma301687b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
This work describes properties of thermo-sensitive submicron sized particles having the same chemical composition but different morphologies. These particles have been prepared with an aerosol technique using dimethylformamide solutions of linear polystyrene-block-poly(N-isopropylacrylamide-block-polystyrene, PS-b-PNIPAM-b-PS. The particles were characterized by cryo-electron microscopy, microcalorimetry, and light scattering. Block-copolymers self-assembled within the particles forming onion-like, gyroid-like, and spherical morphologies having poly(N-isopropylacrylamide) matrix and physically cross-linking polystyrene domains. The particles were dispersed in aqueous media and their behavior in water was studied both below and above the lower critical solution temperature of poly(N-isopropylacrylamide). We found out that the particles with spherical and gyroid-like morphologies swell considerably in water at 20 °C, whereas at 40 °C the particles resemble more of those studied without water treatment. Light scattering experiments showed that the particles gradually aggregate and precipitate with time at 40 °C. Microcalorimetric studies revealed for all three studied morphologies that PNIPAM undergoes a two-step transition due to the different hydration levels of PNIPAM inside and outside the particles. Thicknesses of the PS and PNIPAM layers within the onion-like particles were analyzed using the TEM micrographs by fitting a model of electron density to the integrated electron intensity data. The surface layer of the particles was found out to be PNIPAM, which was supported by light scattering and microcalorimetry. It was also found out from the TEM micrograph analysis that the width of the outmost PS layer is considerably thinner than the one in the dry state prior to immersion in water, and a degradation scheme is proposed to explain these results.
Collapse
Affiliation(s)
- Antti Nykänen
- Aalto University, Department of Applied Physics, P.O Box 15100, FI-00076 Aalto, Finland
| | - Antti Rahikkala
- Aalto University, Department of Applied Physics, P.O Box 15100, FI-00076 Aalto, Finland
| | - Sami-Pekka Hirvonen
- University of Helsinki, Department of Chemistry, P.O. Box 55, FI-00014 University of Helsinki, Finland
| | - Vladimir Aseyev
- University of Helsinki, Department of Chemistry, P.O. Box 55, FI-00014 University of Helsinki, Finland
| | - Heikki Tenhu
- University of Helsinki, Department of Chemistry, P.O. Box 55, FI-00014 University of Helsinki, Finland
| | - Raffaele Mezzenga
- ETH-Zürich Laboratory of Food and Soft Materials, IFNH FSM Group, LFO E23, Schmelzbergstrasse 9, 8092 Zürich, Switzerland
| | - Janne Raula
- Aalto University, Department of Applied Physics, P.O Box 15100, FI-00076 Aalto, Finland
| | - Esko Kauppinen
- Aalto University, Department of Applied Physics, P.O Box 15100, FI-00076 Aalto, Finland
| | - Janne Ruokolainen
- Aalto University, Department of Applied Physics, P.O Box 15100, FI-00076 Aalto, Finland
| |
Collapse
|
26
|
Tao H, Kaplan DL, Omenetto FG. Silk materials--a road to sustainable high technology. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:2824-37. [PMID: 22553118 DOI: 10.1002/adma.201104477] [Citation(s) in RCA: 191] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Revised: 01/21/2012] [Indexed: 05/18/2023]
Abstract
This review addresses the use of silk protein as a sustainable material in optics and photonics, electronics and optoelectronic applications. These options represent additional developments for this technology platform that compound the broad utility and impact of this material for medical needs that have been recently described in the literature. The favorable properties of the material certainly make a favorable case for the use of silk, yet serve as a broad inspiration to further develop biological foundries for both the synthesis and processing of Nature's materials for technological applications.
Collapse
Affiliation(s)
- Hu Tao
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | | | | |
Collapse
|
27
|
Allen AL, Tan KJ, Fu H, Batteas JD, Bergbreiter DE. Solute- and temperature-responsive "smart" grafts and supported membranes formed by covalent layer-by-layer assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:5237-5242. [PMID: 22369512 DOI: 10.1021/la204626e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Polymers like poly(N-isopropylacrylamide) (PNIPAM) exhibit lower critical solution temperature (LCST) behavior. A variety of reports have shown that brush grafts of PNIPAM on surfaces exhibit similar temperature responsiveness. We recently described an alternative synthetic approach to such surfaces that affords surfaces with similar LCST-like behavior. We also noted how such surfaces' wettability can change in response to the identity and concentration of solutes. Here we show that this synthetic procedure can be extended to glass surfaces and to more complex surfaces present in porous glass frits. Functionalized glass surfaces exhibit solute-dependent wetting behavior analogous to that previously reported. We further show that the resulting responsive nanocomposite grafts on such frits exhibit "smart" responsive permeability with a greater than 1000-fold difference in permeability to water versus aqueous solutions of sodium sulfate. This "smart" permeability is ascribed to the solute-dependent wettability behavior of the responsive PNIPAM component of the nanocomposite graft, which is sensitive both to the identity and concentration of the solute anion and to temperature.
Collapse
Affiliation(s)
- Ainsley L Allen
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
| | | | | | | | | |
Collapse
|
28
|
Thermo-responsive Hercosett/Poly(N-isopropylacrylamide) films: A new, fast, optically responsive coating. J Colloid Interface Sci 2012; 369:231-7. [DOI: 10.1016/j.jcis.2011.11.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 11/14/2011] [Accepted: 11/15/2011] [Indexed: 11/16/2022]
|
29
|
Elia R, Newhide DR, Pedevillano PD, Reiss GR, Firpo MA, Hsu EW, Kaplan DL, Prestwich GD, Peattie RA. Silk–hyaluronan-based composite hydrogels: A novel, securable vehicle for drug delivery. J Biomater Appl 2011; 27:749-62. [DOI: 10.1177/0885328211424516] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A new, biocompatible hyaluronic acid (HA)–silk hydrogel composite was fabricated and tested for use as a securable drug delivery vehicle. The composite consisted of a hydrogel formed by cross-linking thiol–modified HA with poly(ethylene glycol)-diacrylate, within which was embedded a reinforcing mat composed of electrospun silk fibroin protein. Both HA and silk are biocompatible, selectively degradable biomaterials with independently controllable material properties. Mechanical characterization showed the composite tensile strength as fabricated to be 4.43 ± 2.87 kPa, two orders of magnitude above estimated tensions found around potential target organs. In the presence of hyaluronidase (HAse) in vitro, the rate of gel degradation increased with enzyme concentration although the reinforcing silk mesh was not digested. Composite gels demonstrated the ability to store and sustainably deliver therapeutic agents. Time constants for in vitro release of selected representative antibacterial and anti-inflammatory drugs varied from 46.7 min for cortisone to 418 min for hydrocortisone. This biocomposite showed promising mechanical characteristics for direct fastening to tissue and organs, as well as controllable degradation properties suitable for storage and release of therapeutically relevant drugs.
Collapse
Affiliation(s)
- Roberto Elia
- Department of Biomedical Engineering, Tufts University, Science and Technology Center, 4 Colby Street, Medford, MA 02155, USA
| | - Danny R Newhide
- Department of Biology, Tufts University, Barnum Hall, 163 Packard Ave., Medford, MA 02155, USA
| | - Paul D Pedevillano
- Department of Chemical Engineering, Tufts University, Science and Technology Center, 4 Colby Street, Medford, MA 02155, USA
| | - G Russell Reiss
- Department of Surgery, Columbia University Medical Center, Milstein Hospital Building, 177 Fort Washington Ave., New York, NY 10032, USA
| | - Matthew A Firpo
- Department of Surgery, School of Medicine, The University of Utah, 30 N., 1930 E., Salt Lake City, UT 84132, USA
| | - Edward W Hsu
- Department of Biomedical Engineering, The University of Utah, Biomedical Polymers Research Building, 20 S., 2030 E., Salt Lake City, UT 84112, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Science and Technology Center, 4 Colby Street, Medford, MA 02155, USA
| | - Glenn D Prestwich
- Department of Medicinal Chemistry, Center for Therapeutic Biomaterials, The University of Utah, 419 Wakara Way, Suite 205, Salt Lake City, UT 84108, USA
| | - Robert A Peattie
- Department of Biomedical Engineering, Tufts University, Science and Technology Center, 4 Colby Street, Medford, MA 02155, USA
| |
Collapse
|
30
|
Yin PG, Chen Y, Jiang L, You TT, Lu XY, Guo L, Yang S. Controlled Dispersion of Silver Nanoparticles into the Bulk of Thermosensitive Polymer Microspheres: Tunable Plasmonic Coupling by Temperature Detected by Surface Enhanced Raman Scattering. Macromol Rapid Commun 2011; 32:1000-6. [DOI: 10.1002/marc.201100143] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 04/15/2011] [Indexed: 01/16/2023]
|