1
|
Shi R, Ye D, Ma K, Tian W, Zhao Y, Guo H, Shao Z, Guan J, Ritchie RO. Understanding the Interfacial Adhesion between Natural Silk and Polycaprolactone for Fabrication of Continuous Silk Biocomposites. ACS APPLIED MATERIALS & INTERFACES 2022; 14:46932-46944. [PMID: 36194850 DOI: 10.1021/acsami.2c11045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The poor interfacial adhesion between silk fiber and polyester species remains a critical problem for the optimal mechanical performance of silk-reinforced polyester composites. Here, we investigated in quantitative terms the interfacial properties between natural silk fibers and polycaprolactone (PCL) at nano-, micro-, and macroscales and fabricated continuous silk-PCL composite filaments by melt extrusion and drawing processing of PCL melt at 100, 120, and 140 °C. Bombyx mori (Bm) silk, Antheraea pernyi (Ap) silk, and polyamide6 (PA6) fiber were compared to the composite with PCL. The Ap silk exhibited the highest surface energy, the best wettability, and the largest interfacial shear strength (IFSS) with PCL. The silk-PCL composite from the 120 °C melt processing displayed the highest tensile modulus, implying an optimal temperature for interfacial adhesion. The Raman imaging technique revealed in detail the nature of the physical fusion of the interface phase in these silk- and polyamide-reinforced PCL composites. This work is intended to lay a foundation for the design and processing of robust composites from continuous silk fibers and bioresorbable polyesters for potential structural biomaterials.
Collapse
Affiliation(s)
- Ruya Shi
- School of Materials Science and Engineering, Beihang University, Beijing100083, P. R. China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beijing100083, P. R. China
| | - Dongdong Ye
- School of Textile Materials and Engineering, Wuyi University, Jiangmen529020, P. R. China
| | - Ke Ma
- School of Materials Science and Engineering, Beihang University, Beijing100083, P. R. China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beijing100083, P. R. China
| | - Wenhan Tian
- School of Materials Science and Engineering, Beihang University, Beijing100083, P. R. China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beijing100083, P. R. China
| | - Yan Zhao
- School of Materials Science and Engineering, Beihang University, Beijing100083, P. R. China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beijing100083, P. R. China
| | - Hongbo Guo
- School of Materials Science and Engineering, Beihang University, Beijing100083, P. R. China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beijing100083, P. R. China
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University, Shanghai200433, P. R. China
| | - Juan Guan
- School of Materials Science and Engineering, Beihang University, Beijing100083, P. R. China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beijing100083, P. R. China
| | - Robert O Ritchie
- Department of Materials Science & Engineering, University of California, Berkeley, California94720, United States
| |
Collapse
|
2
|
Zhao L, Jia SL, Wang ZP, Chen YJ, Bian JJ, Han LJ, Zhang HL, Dong LS. Thermal, Rheological and Mechanical Properties of Biodegradable Poly(propylene carbonate)/Epoxidized Soybean Oil Blends. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2590-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
3
|
Luo J, Zhu J, Wang L, Kang J, Wang X, Xiong J. Co-electrospun nano-/microfibrous composite scaffolds with structural and chemical gradients for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111622. [PMID: 33321664 DOI: 10.1016/j.msec.2020.111622] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 09/29/2020] [Accepted: 10/05/2020] [Indexed: 12/18/2022]
Abstract
Recent trends in scaffold design for tissue engineering have focused on providing structural, mechanical and chemical cues for guiding cell behaviors. In this study, we presented a structural/compositional gradient nano-/microfibrous mesh by co-electrospinning, using silk fibroin-poly(ε-caprolactone) (SF-PCL) nanofibers and PCL microfibers. The pore size, porosity, and physical property of the gradient meshes were qualified. Cell proliferation of mouse osteoblast-like MC3T3-E1 cells was carried out to estimate the effect of structural and compositional gradients on biocompatibility. Furthermore, the 2-D mesh was rolled up and the compressive property of 3-D cylinder was investigated. The results suggested that the rolled-up gradient cylinder scaffold exhibited higher osteogenic differentiation compared to the pristine nanofibrous cylinder sample. By incorporating Chinese medicine ginsenoside Rg1, sustained release was achieved in composite meshes. Rg1-containing nanofibrous meshes and Rg1 gradient cylinders enhanced the cell proliferation of human umbilical vein endothelial cells (HUVECs). The developed fibrous scaffold may provide structural, compositional, and chemical gradients for bone regeneration. BRIEFS: Structural and chemical gradient fibrous scaffold fabricated by co-electrospinning.
Collapse
Affiliation(s)
- Jingjing Luo
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China; College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Jiang Zhu
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Lijun Wang
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Jing Kang
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Xin Wang
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Jie Xiong
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.
| |
Collapse
|
4
|
Xu Z, Wu M, Gao W, Bai H. A Transparent, Skin-Inspired Composite Film with Outstanding Tear Resistance Based on Flat Silk Cocoon. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002695. [PMID: 32686143 DOI: 10.1002/adma.202002695] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/19/2020] [Indexed: 06/11/2023]
Abstract
Flexible and transparent substrates play a fundamental role as a mechanical support in advanced electronic devices. However, commonly used polymer films, such as polydimethylsiloxane, show low tear resistance because of their crack sensitivity. Herein, inspired by the excellent mechanical robustness of the skin and its fibrous structure, an epoxy-resin-based composite with a flat silk cocoon as a reinforcing fiber network is fabricated. With only 1 wt% of silk fiber, the tensile strength and modulus of the as-prepared composite film are considerably increased by 300% and 612% compared to those of pure resin, while still maintaining flexibility and transparency. More importantly, the composite shows remarkable tear resistance: without fracture after ≈30 000 tensile cycles. The potential application of such transparent composite films as mechanically robust substrates for flexible electronics is also demonstrated. In addition, this study represents a bioinspired strategy to construct high-performance functional composite materials.
Collapse
Affiliation(s)
- Zongpu Xu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Mingrui Wu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Weiwei Gao
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Hao Bai
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| |
Collapse
|
5
|
Zainudin Z, Mohd Yusoff NIS, Wahit MU, Che Man SH. Mechanical, Thermal, Void Fraction and Water Absorption of Silane Surface Modified Silk Fiber Reinforced Epoxy Composites. POLYM-PLAST TECH MAT 2020. [DOI: 10.1080/25740881.2020.1784215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Zuraidah Zainudin
- Department of Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
| | - Noor Izyan Syazana Mohd Yusoff
- Department of Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
| | - Mat Uzir Wahit
- Department of Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
- Centre for Advanced Composite Materials, Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
| | - Siti Hajjar Che Man
- Department of Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
| |
Collapse
|
6
|
Yang K, Guan J, Shao Z, Ritchie RO. Mechanical properties and toughening mechanisms of natural silkworm silks and their composites. J Mech Behav Biomed Mater 2020; 110:103942. [PMID: 32957236 DOI: 10.1016/j.jmbbm.2020.103942] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 04/19/2020] [Accepted: 06/17/2020] [Indexed: 01/26/2023]
Abstract
There is an emerging interest in natural silkworm silks as alternative reinforcement for engineering composites. Here, we summarize the research on two common silkworm silks and silk fibre reinforced plastics (SFRPs) from the authors over the past few years in the context of related research. Silk fibres from silkworms display good strength and toughness under ambient and cryogenic conditions owing to their elastic-plastic deformation mechanism. In particular, the wild Antheraea pernyi (A. pernyi) silk also displays micro- and nano-fibrillation as an important mechanism for toughness and impact resistance. For SFRP composites, we found: (i) it is critical to achieve silk fibre volume fraction to above 50% for an optimal reinforcement and toughening effect; (ii) the tougher A. pernyi silks present a better reinforcement and toughening agent than B. mori silks; (iii) impact and toughness properties are advantageous properties of SFRPs; (iv) hybridization of natural silk with other fibres can further improve the mechanical performance and economics of SFRPs for engineering applications; and (v) the lightweight structure designs can improve the service efficiency of SFRPs for energy absorption. The understanding on the comprehensive mechanical properties and the toughening mechanisms of silks and silk fibre-reinforced polymer composites (SFRPs) could provide key insights into material design and applications.
Collapse
Affiliation(s)
- Kang Yang
- International Research Center for Advanced Structural and Biomaterials, School of Materials Science and Engineering, Beihang University, Beijing, 100191, China; Biomechanics and Soft Robotics Lab, Beihang University, Beijing, 100191, China
| | - Juan Guan
- International Research Center for Advanced Structural and Biomaterials, School of Materials Science and Engineering, Beihang University, Beijing, 100191, China; Beijing Advanced Innovation Center for Biomedical Engineering, Beijing, 100083, China.
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials, Department of Macromolecular Science, Fudan University, Shanghai, 200433, China.
| | - Robert O Ritchie
- Materials Sciences Division, Lawrence Berkeley National Laboratory and Department of Materials Science & Engineering, University of California, Berkeley, CA94720, USA.
| |
Collapse
|
7
|
Modeling Analysis of Silk Fibroin/Poly(ε-caprolactone) Nanofibrous Membrane under Uniaxial Tension. NANOMATERIALS 2019; 9:nano9081149. [PMID: 31405136 PMCID: PMC6722917 DOI: 10.3390/nano9081149] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 07/30/2019] [Accepted: 08/07/2019] [Indexed: 01/22/2023]
Abstract
Evaluating the mechanical ability of nanofibrous membranes during processing and end uses in tissue engineering is important. We propose a geometric model to predict the uniaxial behavior of randomly oriented nanofibrous membrane based on the structural characteristics and tensile properties of single nanofibers. Five types of silk fibroin (SF)/poly(ε-caprolactone) (PCL) nanofibers were prepared with different mixture ratios via an electrospinning process. Stress-strain responses of single nanofibers and nanofibrous membranes were tested. We confirmed that PCL improves the flexibility and ductility of SF/PCL composite membranes. The applicability of the analytical model was verified by comparison between modeling prediction and experimental data. Experimental stress was a little lower than the modeling results because the membranes were not ideally uniform, the nanofibers were not ideally straight, and some nanofibers in the membranes were not effectively loaded.
Collapse
|
8
|
Suryavanshi A, Khanna K, Sindhu KR, Bellare J, Srivastava R. Development of bone screw using novel biodegradable composite orthopedic biomaterial: from material design to
in vitro
biomechanical and
in vivo
biocompatibility evaluation. Biomed Mater 2019; 14:045020. [DOI: 10.1088/1748-605x/ab16be] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
9
|
Han L, Xu H, Sui X, Zhang L, Zhong Y, Mao Z. Preparation and properties of poly(ε-caprolactone) self-reinforced composites based on fibers/matrix structure. J Appl Polym Sci 2017. [DOI: 10.1002/app.44673] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lei Han
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 People's Republic of China
| | - Hong Xu
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 People's Republic of China
| | - Xiaofeng Sui
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 People's Republic of China
| | - Linping Zhang
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 People's Republic of China
| | - Yi Zhong
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 People's Republic of China
| | - Zhiping Mao
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 People's Republic of China
| |
Collapse
|
10
|
Zhu J, Luo J, Zhao X, Gao J, Xiong J. Electrospun homogeneous silk fibroin/poly (ɛ-caprolactone) nanofibrous scaffolds by addition of acetic acid for tissue engineering. J Biomater Appl 2016; 31:421-37. [DOI: 10.1177/0885328216659775] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this study, we investigated the phase separation phenomenon of silk fibroin/poly (ɛ-caprolactone) electrospinning solution to improve the performance of silk fibroin/poly (ɛ-caprolactone) electrospun nanofibers. It showed that phase separation does occur in just a few hours in the silk fibroin/poly (ɛ-caprolactone)/formic acid mixture solution. Acetic acid, small molecule nonsolvent for silk fibroin, was first introduced to silk fibroin/poly (ɛ-caprolactone)/formic acid solution, a homogeneous solution without separation for over several days was achieved after mixing for 5 h. The morphology and composition of the silk fibroin/poly (ɛ-caprolactone) and acetic acid-modified silk fibroin/poly (ɛ-caprolactone) fibrous scaffolds were examined by scanning electron microscopy, Fourier transform infrared spectroscopy and thermal gravimetric analyzer. Attachment and proliferation of mouse osteoblast MC3T3-E1 cells were tested by scanning electron microscopy and cytotoxity assay. The results indicated that the phase separation of silk fibroin/poly (ɛ-caprolactone) solution might led to inhomogeneous morphology and composition of the composite scaffolds, and the inhomogeneity of the silk fibroin/poly (ɛ-caprolactone) scaffolds with formic acid as solvent had a remarkable difference on cell adhesion and proliferation. In contrast, there was no significant difference among the silk fibroin/poly (ɛ-caprolactone) scaffolds with formic acid/acetic acid as solvent because of their good consistency in fiber morphology and composition. These obtained silk fibroin/poly (ɛ-caprolactone) nanofibers had small average diameter of 190 ± 40 nm. The obtained results proved that this study provided a facile and effective approach to achieve compositionally homogeneous silk fibroin/poly (ɛ-caprolactone) scaffolds with formic acid as solvent for effective applications.
Collapse
Affiliation(s)
- Jiang Zhu
- College of Materials and Textile, Zhejiang Sci-Tech University, People’s Republic of China
| | - Jingjing Luo
- College of Materials and Textile, Zhejiang Sci-Tech University, People’s Republic of China
- College of Life Sciences, Zhejiang Sci-Tech University, People’s Republic of China
| | - Xingyan Zhao
- College of Materials and Textile, Zhejiang Sci-Tech University, People’s Republic of China
| | - Junjiu Gao
- College of Materials and Textile, Zhejiang Sci-Tech University, People’s Republic of China
| | - Jie Xiong
- College of Materials and Textile, Zhejiang Sci-Tech University, People’s Republic of China
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Zhejiang Sci-Tech University, People’s Republic of China
| |
Collapse
|
11
|
Effect of diameter of poly(lactic acid) fiber on the physical properties of poly(ɛ-caprolactone). Int J Biol Macromol 2015; 76:49-57. [DOI: 10.1016/j.ijbiomac.2015.01.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 01/12/2015] [Accepted: 01/13/2015] [Indexed: 11/21/2022]
|
12
|
Poly(ɛ-caprolactone) composites reinforced by biodegradable poly(3-hydroxybutyrate-co-3-hydroxyvalerate) fiber. Int J Biol Macromol 2014; 67:343-50. [DOI: 10.1016/j.ijbiomac.2014.03.048] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 03/04/2014] [Accepted: 03/19/2014] [Indexed: 11/18/2022]
|
13
|
de Moraes MA, Beppu MM. Biocomposite membranes of sodium alginate and silk fibroin fibers for biomedical applications. J Appl Polym Sci 2013. [DOI: 10.1002/app.39598] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Marisa Masumi Beppu
- School of Chemical Engineering; University of Campinas; 13083-852 Campinas-SP; Brazil
| |
Collapse
|
14
|
Mallek H, Jegat C, Mignard N, Abid M, Abid S, Taha M. Reversibly crosslinked self-healing PCL-based networks. J Appl Polym Sci 2012. [DOI: 10.1002/app.38595] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
15
|
IMPROVING THE MECHANICAL PROPERTIES OF SILK FIBER/FIBROIN COMPOSITES BY INTERFACIAL MODIFICATION. ACTA POLYM SIN 2011. [DOI: 10.3724/sp.j.1105.2011.11040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
16
|
Yuan Q, Yao J, Chen X, Huang L, Shao Z. The preparation of high performance silk fiber/fibroin composite. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.08.042] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
17
|
Lahiri D, Rouzaud F, Richard T, Keshri AK, Bakshi SR, Kos L, Agarwal A. Boron nitride nanotube reinforced polylactide-polycaprolactone copolymer composite: mechanical properties and cytocompatibility with osteoblasts and macrophages in vitro. Acta Biomater 2010; 6:3524-33. [PMID: 20226282 DOI: 10.1016/j.actbio.2010.02.044] [Citation(s) in RCA: 157] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2009] [Revised: 02/22/2010] [Accepted: 02/24/2010] [Indexed: 12/12/2022]
Abstract
Biodegradable polylactide-polycaprolactone copolymer (PLC) has been reinforced with 0, 2 and 5wt.% boron nitride nanotubes (BNNTs) for orthopedic scaffold application. Elastic modulus of the PLC-5wt.% BNNT composite, evaluated through nanoindentation technique, shows a 1370% increase. The same amount of BNNT addition to PLC enhances the tensile strength by 109%, without any adverse effect on the ductility up to 240% elongation. Interactions of the osteoblasts and macrophages with bare BNNTs prove them to be non-cytotoxic. PLC-BNNT composites displayed increased osteoblast cell viability as compared to the PLC matrix. The addition of BNNTs also resulted in an increase in the expression levels of the Runx2 gene, the main regulator of osteoblast differentiation. These results indicate that BNNT is a potential reinforcement for composites for orthopedic applications.
Collapse
|
18
|
Qiao X, Li W, Sun K, Chen X. Effect of electron beam irradiation on the crystallization of silk fibroin fiber-reinforced poly(ε-caprolactone) biocomposites. POLYM INT 2009. [DOI: 10.1002/pi.2721] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
19
|
Lahiri D, Rouzaud F, Namin S, Keshri AK, Valdés JJ, Kos L, Tsoukias N, Agarwal A. Carbon nanotube reinforced polylactide-caprolactone copolymer: mechanical strengthening and interaction with human osteoblasts in vitro. ACS APPLIED MATERIALS & INTERFACES 2009; 1:2470-2476. [PMID: 20356116 DOI: 10.1021/am900423q] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This study proposes the use of carbon nanotubes (CNTs) as reinforcement to enhance the mechanical properties of a polylactide-caprolactone copolymer (PLC) matrix. Biological interaction of PLC-CNT composites with human osteoblast cells is also investigated. Addition of 2 wt % CNT shows very uniform dispersion in the copolymer matrix, whereas 5 wt % CNT shows severe agglomeration and high porosity. PLC-2 wt % CNT composite shows an improvement in the mechanical properties with an increase in the elastic modulus by 100% and tensile strength by 160%, without any adverse effect on the ductility up to 240% elongation. An in vitro biocompatibility study on the composites shows an increase in the viability of human osteoblast cells compared to the PLC matrix, which is attributed to the combined effect of CNT content and surface roughness of the composite films.
Collapse
Affiliation(s)
- D Lahiri
- Mechanical and Materials Engineering, Biological Sciences, and Biomedical Engineering, Florida International University, Miami, Florida 33174, USA
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Qiao X, Li W, Watanabe H, Sun K, Chen X. Rheological behavior of biocomposites of silk fibroin fiber and poly(ε-caprolactone): Effect of fiber network. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/polb.21786] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
21
|
Li W, Qiao X, Sun K, Chen X. Effect of electron beam irradiation on the silk fibroin fiber/poly(ε-caprolactone) composite. J Appl Polym Sci 2009. [DOI: 10.1002/app.29869] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|