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Ishak KA, Zahid NI, Velayutham TS, Khyasudeen MF, Annuar MSM. Corroborative studies on chain packing characteristics of biological medium-chain-length poly-3-hydroxyalkanoates with different monomeric composition. Int J Biol Macromol 2024; 269:131973. [PMID: 38692536 DOI: 10.1016/j.ijbiomac.2024.131973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 04/05/2024] [Accepted: 04/28/2024] [Indexed: 05/03/2024]
Abstract
Medium-chain-length poly-3-hydroxyalkanoates (mcl-PHAs) with varied monomeric compositions were biosynthesized by producer bacteria fed with different fatty acids as carbon source. Octanoic-, lauric-, stearic-, and oleic acids were used to produce four types of mcl-PHAs viz. PHA-OC, PHA-LA, PHA-ST, and PHA-OL, respectively. The mcl-PHAs as film-casted preparations exhibit distinct traits e.g., PHA-OC and PHA-ST films are less flexible than PHA-LA while PHA-OL is a sticky, glue-like material; PHA-ST is opaque whereas PHA-OC, PHA-LA, and PHA-OL displayed transparent layers. The observation is attributed to polymer chain packing and side chain crystallization. A structure-property investigation of these biopolymers was carried out employing different spectroscopic and microscopic analyses in addition to thermal analyses. Comparative analyses of the results were applied in the interpretation and discussion of structure-property relationship.
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Affiliation(s)
- Khairul Anwar Ishak
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia; Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly, Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.
| | - N Idayu Zahid
- Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly, Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Thamil Selvi Velayutham
- Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly, Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia; Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - M Faisal Khyasudeen
- Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly, Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
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2
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Syed Mohamed SMD, Ansari NF, Md Iqbal N, Anis SNS. Polyhydroxyalkanoates (PHA)-based responsive polymers. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2021.1962874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Nor Faezah Ansari
- Department of Biotechnology, Kulliyyah of Science, International Islamic University of Malaysia, Kuantan, Malaysia
- Research Unit for Bioinformatics and Computational Biology (RUBIC), International Islamic University of Malaysia, Kuantan, Malaysia
| | | | - Siti Nor Syairah Anis
- IJN-UTM Cardiovascular Engineering Centre, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
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3
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Ishak KA, Velayutham TS, Annuar MSM, Sirajudeen AAO. Structure-property interpretation of biological polyhydroxyalkanoates with different monomeric composition: Dielectric spectroscopy investigation. Int J Biol Macromol 2020; 169:311-320. [PMID: 33340632 DOI: 10.1016/j.ijbiomac.2020.12.090] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 12/01/2020] [Accepted: 12/11/2020] [Indexed: 10/22/2022]
Abstract
Dielectric spectroscopy is employed to study the relaxation phenomena in natural polyhydroxyalkanoates (PHAs) upon temperature and frequency variations. Effects of PHAs molecular structure on the relaxation, arising from the differences in monomeric composition, are investigated under identical conditions in a frequency range of 10-2-106 Hz, and at different temperatures. All PHA samples showed different dielectric response at different temperature. Primary α-relaxation signals are observed at temperature corresponding to the glass transition temperature. On the other hand, secondary β- and γ-relaxations are detected at low temperatures, and attributed to local motions of polar groups and small segments of the polymer chain. The dielectric properties of representative PHA samples are compared and discussed.
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Affiliation(s)
- Khairul Anwar Ishak
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia; Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly, Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Thamil Selvi Velayutham
- Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly, Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia; Low Dimensional Materials Research Center, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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4
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Sosa‐Hernández JE, Villalba‐Rodríguez AM, Romero‐Castillo KD, Zavala‐Yoe R, Bilal M, Ramirez‐Mendoza RA, Parra‐Saldivar R, Iqbal HMN. Poly‐3‐hydroxybutyrate‐based constructs with novel characteristics for drug delivery and tissue engineering applications—A review. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25470] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
| | | | - Kenya D. Romero‐Castillo
- Tecnologico de MonterreySchool of Engineering and Sciences, Campus Monterrey Monterrey Nuevo Leon Mexico
| | - Ricardo Zavala‐Yoe
- Instituto Tecnologico de Monterrey, Campus Ciudad de Mexico Mexico City Mexico
| | - Muhammad Bilal
- School of Life Science and Food EngineeringHuaiyin Institute of Technology Huaian China
| | - Ricardo A. Ramirez‐Mendoza
- Tecnologico de MonterreySchool of Engineering and Sciences, Campus Monterrey Monterrey Nuevo Leon Mexico
| | - Roberto Parra‐Saldivar
- Tecnologico de MonterreySchool of Engineering and Sciences, Campus Monterrey Monterrey Nuevo Leon Mexico
| | - Hafiz M. N. Iqbal
- Tecnologico de MonterreySchool of Engineering and Sciences, Campus Monterrey Monterrey Nuevo Leon Mexico
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Sirajudeen AAO, Annuar MSM, Subramaniam R. Composite of medium-chain-length polyhydroxyalkanoates-co-methyl acrylate and carbon nanotubes as innovative electrodes modifier in microbial fuel cell. Biotechnol Appl Biochem 2020; 68:307-318. [PMID: 32314420 DOI: 10.1002/bab.1928] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 03/24/2020] [Indexed: 11/11/2022]
Abstract
A microbial fuel cell is a sustainable and environmental-friendly device that combines electricity generation and wastewater treatment through metabolic activities of microorganisms. However, low power output from inadequate electron transfer to the anode electrode hampers its practical implementation. Nanocomposites of oxidized carbon nanotubes and medium-chain-length polyhydroxyalkanoates (mcl-PHA) grafted with methyl acrylate monomers enhance the electrochemical function of electrodes in microbial fuel cell. Extensive polymerization of methyl acrylate monomers within mcl-PHA matrix, and homogenous dispersion of carbon nanotubes within the graft matrix are responsible for the enhancement. Modified electrodes exhibit high conductivities, better redox peak and reduction of cell internal resistance up to 76%. A stable voltage output at almost 700 mV running for 225 H generates maximum power and current density of 351 mW/m2 and 765 mA/m2 , respectively. Superior biofilm growth on modified surface is responsible for improved electron transfer to the anode hence stable and elevated power output generation.
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Affiliation(s)
| | | | - Ramesh Subramaniam
- Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
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6
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Molecular design, synthesis and biomedical applications of stimuli-responsive shape memory hydrogels. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.03.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Yusuf H, Annuar MSM, Subramaniam R, Gumel AM. Amphiphilic Biopolyester‐Carbon Nanotube Anode Enhances Electrochemical Activities of Microbial Fuel Cell. Chem Eng Technol 2019. [DOI: 10.1002/ceat.201800023] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hindatu Yusuf
- University of MalayaInstitute of Biological SciencesFaculty of Science Jalan Pantai 50603 Kuala Lumpur Malaysia
- Bauchi State University, GadauDepartment of BiochemistryFaculty of Science Azare-Hadejia Road 751105 Bauchi State Nigeria
| | | | - Ramesh Subramaniam
- University of MalayaCenter for Ionics University of MalayaDepartment of PhysicsFaculty of Science Jalan Pantai 50603 Kuala Lumpur Malaysia
| | - Ahmad Mohammed Gumel
- Federal University DutseDepartment of Microbiology and BiotechnologyFaculty of Science Ibrahim Aliyu bypass 7156 Dutse, Jigawa State Nigeria
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Geryak R, Quigley E, Kim S, Korolovych VF, Calabrese R, Kaplan DL, Tsukruk VV. Tunable Interfacial Properties in Silk Ionomer Microcapsules with Tailored Multilayer Interactions. Macromol Biosci 2018; 19:e1800176. [PMID: 30102459 DOI: 10.1002/mabi.201800176] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 06/29/2018] [Indexed: 11/06/2022]
Abstract
Microencapsulation techniques represent a critical step in realizing highly controlled transport of functional materials in multiphase systems. The first demonstration of microcapsules prepared from minimally grafted silk ionomers (silk fibroin modified with cationic/anionic charge groups) are presented here. These tailored biomacromolecules have shown significantly increased biocompatibility over traditional polyelectrolytes and heavily grafted silk ionomers, but the low grafting density had previously limited attempts to fabricate stable microcapsules. In addition, the first microcapsules from polyethylene-glycol-grafted silk ionomers are fabricated and the corresponding impact on microcapsule behavior is demonstrated. The materials are shown to exhibit pH-responsive properties, with the microcapsules demonstrating an approx. tenfold decrease in stiffness and an approx. threefold change in diffusion coefficient when moving from acidic to basic buffer. Finally, the effect of assembly conditions of the microcapsules are shown to play a large role in determining final properties, with microcapsules prepared in acidic buffers showing lower roughness, stiffness, and an inversion in transport behavior (i.e., permeability decreases at higher pH).
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Affiliation(s)
- Ren Geryak
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Elizabeth Quigley
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Sunghan Kim
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Volodymyr F Korolovych
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Rossella Calabrese
- Department of Biomedical Engineering, Tufts University, 4 Colby St, Medford, MA, 02155, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby St, Medford, MA, 02155, USA
| | - Vladimir V Tsukruk
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
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Hindatu Y, Annuar MSM, Subramaniam R, Gumel AM. Medium-chain-length poly-3-hydroxyalkanoates-carbon nanotubes composite anode enhances the performance of microbial fuel cell. Bioprocess Biosyst Eng 2017; 40:919-928. [PMID: 28341913 DOI: 10.1007/s00449-017-1756-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 03/01/2017] [Indexed: 12/17/2022]
Abstract
Insufficient power generation from a microbial fuel cell (MFC) hampers its progress towards utility-scale development. Electrode modification with biopolymeric materials could potentially address this issue. In this study, medium-chain-length poly-3-hydroxyalkanoates (PHA)/carbon nanotubes (C) composite (CPHA) was successfully applied to modify the surface of carbon cloth (CC) anode in MFC. Characterization of the functional groups on the anodic surface and its morphology was carried out. The CC-CPHA composite anode recorded maximum power density of 254 mW/m2, which was 15-53% higher than the MFC operated with CC-C (214 mW/m2) and pristine CC (119 mW/m2) as the anode in a double-chambered MFC operated with Escherichia coli as the biocatalyst. Electrochemical impedance spectroscopy and cyclic voltammetry showed that power enhancement was attributed to better electron transfer capability by the bacteria for the MFC setup with CC-CPHA anode.
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Affiliation(s)
- Y Hindatu
- Faculty of Science, Institute of Biological Sciences, University of Malaya, 50603, Kuala Lumpur, Malaysia.,Faculty of Science, Department of Biochemistry, Bauchi State University, P.M.B. 65, Gadau, Bauchi State, Nigeria
| | - M S M Annuar
- Faculty of Science, Institute of Biological Sciences, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - R Subramaniam
- Faculty of Science, Department of Physics, Center for Ionics University of Malaya, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - A M Gumel
- Faculty of Science, Department of Microbiology and Biotechnology, Federal University Dutse, 7156, Dutse, Jigawa State, Nigeria
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Nöchel U, Behl M, Balk M, Lendlein A. Thermally-Induced Triple-Shape Hydrogels: Soft Materials Enabling Complex Movements. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28068-28076. [PMID: 27673368 DOI: 10.1021/acsami.6b09581] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Shape-memory hydrogels enable directed movements of a specimen in response to temperature, whereby crystallizable switching segments incorporated as side chains resulted in constant degrees of swelling during the shape-memory cycle. Here we report about hydrogels exhibiting a thermally induced triple-shape effect that allows complex movements of soft materials with two almost independent shape changes. Potential applications for those soft triple-shape materials are two-step self-unfolding devices or temperature-sensitive hydrogel actuators, for example, smart valves for flow rate control in aqueous media. Series of hydrogels with two different hydrophobic crystallizable switching segments were prepared. The degrees of swelling of the triple-shape hydrogels were not affected for different shapes or temperatures, which avoided in this way interferences on the shape shifts. During the two-step programming procedure, two distinct shapes can be implemented as reflected by shape fixity ratios of generally >50%. Structural analysis of the switching domains during the triple-shape cycle by means of X-ray scattering indicates that longer side chains gain lower orientation after deformation and that shorter side chains orient perpendicular to the hydrophilic main chain. Furthermore, it is observed that increased orientation of the switching domains is not a key requirement for adequate shape fixity and recovery ratios of the triple-shape effect in hydrogels, thus longer side chains can be utilized as switching segments in other shape-memory hydrogels.
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Affiliation(s)
- Ulrich Nöchel
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT) and ‡Joint Laboratory for Biomaterials and Regenerative Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55, 14513 Teltow, Germany
| | - Marc Behl
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT) and ‡Joint Laboratory for Biomaterials and Regenerative Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55, 14513 Teltow, Germany
| | - Maria Balk
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT) and ‡Joint Laboratory for Biomaterials and Regenerative Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55, 14513 Teltow, Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT) and ‡Joint Laboratory for Biomaterials and Regenerative Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55, 14513 Teltow, Germany
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11
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Thermomyces lanuginosus lipase-catalyzed synthesis of natural flavor esters in a continuous flow microreactor. 3 Biotech 2016; 6:24. [PMID: 28330099 PMCID: PMC4711288 DOI: 10.1007/s13205-015-0355-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 12/24/2015] [Indexed: 12/17/2022] Open
Abstract
Enzymatic catalysis is considered to be among the most environmental friendly processes for the synthesis of fine chemicals. In this study, lipase from Thermomyces lanuginosus (Lecitase Ultra™) was used to catalyze the synthesis of flavor esters, i.e., methyl butanoate and methyl benzoate by esterification of the acids with methanol in a microfluidic system. Maximum reaction rates of 195 and 115 mM min−1 corresponding to catalytic efficiencies (kcat/KM) of 0.30 and 0.24 min−1 mM−1 as well as yield conversion of 54 and 41 % were observed in methyl butanoate and methyl benzoate synthesis, respectively. Catalytic turnover (kcat) was higher for methyl butanoate synthesis. Rate of synthesis and yield decreased with increasing flow rates. For both esters, increase in microfluidic flow rate resulted in increased advective transport over molecular diffusion and reaction rate, thus lower conversion. In microfluidic synthesis using T. lanuginosus lipase, the following reaction conditions were 40 °C, flow rate 0.1 mL min−1, and 123 U g−1 enzyme loading found to be the optimum operating limits. The work demonstrated the application of enzyme(s) in a microreactor system for the synthesis of industrially important esters.
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12
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Mechanical behavior of a terpolymer-based pH- and temperature-responsive hydrogel. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0858-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Gumel AM, Razaif-Mazinah MRM, Anis SNS, Annuar MSM. Poly (3-hydroxyalkanoates)-co-(6-hydroxyhexanoate) hydrogel promotes angiogenesis and collagen deposition during cutaneous wound healing in rats. ACTA ACUST UNITED AC 2015; 10:045001. [PMID: 26154416 DOI: 10.1088/1748-6041/10/4/045001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Wound management and healing in several physiological or pathological conditions, particularly when comorbidities are involved, usually proves to be difficult. This presents complications leading to socio-economic and public health burdens. The accelerative wound healing potential of biocompatible poly(3-hydroxyalkanoates)-co-(6-hydroxyhexanoate) (PHA-PCL) composite hydrogel is reported herein. The biosynthesized PHA-PCL macromer was cross-linked with PEGMA to give a hydrogel. Twenty-four rats weighing 200-250 g each were randomly assigned to four groups of six rats. Rats in group I (negative control) were dressed with sterilized gum acacia paste in 10% normal saline while PEGMA-alone hydrogel (PH) was used to dress group II (secondary control) rats. Group III rats were dressed with PHAs-PCL cross-linked PEGMA hydrogel (PPH). For the positive control (group IV), the rats were dressed with Intrasite(®) gel. Biochemical, histomorphometric and immunohistomorphometric analyses revealed a significant difference in area closure and re-epithelialization on days 7 and 14 in PPH or Intrasite(®) gel groups compared to gum acacia or PEGMA-alone groups. Furthermore, wounds dressed with PPH or Intrasite(®) gel showed evident collagen deposition, enhanced fibrosis and extensively organized angiogenesis on day 14 compared to the negative control group. While improvement in wound healing of the PH dressed group could be observed, there was no significant difference between the negative control group and the PH dressed group in any of the tests. The findings suggested that topical application of PPH accelerated the rats' wound healing process by improving angiogenesis attributed to the increased microvessel density (MVD) and expressions of VEGF-A in tissue samples. Thus, PPH has been demonstrated to be effective in the treatment of cutaneous wounds in rats, and could be a potential novel agent in the management and acceleration of wound healing in humans and animals.
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Affiliation(s)
- Ahmad Mohammed Gumel
- Institute of Biological Sciences, Faculty of Sciences, University of Malaya, 50603, Kuala Lumpur, Malaysia
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Chen Y, Mo F, Chen S, Yang Y, Chen S, Zhuo H, Liu J. A shape memory copolymer based on 2-(dimethylamino)ethyl methacrylate and methyl allyl polyethenoxy ether for potential biological applications. RSC Adv 2015. [DOI: 10.1039/c5ra05753a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
This study reports a novel shape memory copolymer synthesized with 2-(dimethylamino)-ethyl-methacrylate (DMAEMA) and methyl-allyl-polyethenoxy-ether (TPEG) for potential biological applications.
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Affiliation(s)
- Yangyang Chen
- Shenzhen Key Laboratory of Special Functional Materials
- Nanshan District Key Lab for Biopolymers and Safety Evaluation
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen
| | - Funian Mo
- Shenzhen Key Laboratory of Special Functional Materials
- Nanshan District Key Lab for Biopolymers and Safety Evaluation
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen
| | - Shaojun Chen
- Shenzhen Key Laboratory of Special Functional Materials
- Nanshan District Key Lab for Biopolymers and Safety Evaluation
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen
| | - Yan Yang
- Shenzhen Key Laboratory of Special Functional Materials
- Nanshan District Key Lab for Biopolymers and Safety Evaluation
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen
| | - Shiguo Chen
- Shenzhen Key Laboratory of Special Functional Materials
- Nanshan District Key Lab for Biopolymers and Safety Evaluation
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen
| | - Haitao Zhuo
- Shenzhen Key Laboratory of Functional Polymer
- College of Chemistry and Chemical Engineering
- Shenzhen University
- Shenzhen
- China
| | - Jianhong Liu
- Shenzhen Key Laboratory of Functional Polymer
- College of Chemistry and Chemical Engineering
- Shenzhen University
- Shenzhen
- China
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15
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Wu CH, Shau SM, Liu SC, Dai SA, Chen SC, Lee RH, Hsieh CF, Jeng RJ. Enhanced shape memory performance of polyurethanes via the incorporation of organic or inorganic networks. RSC Adv 2015. [DOI: 10.1039/c4ra14277b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
A diol compound with a reactive azetidine-2,4-dione group was prepared and introduced as a side chain moiety of poly(ε-caprolactone) (PCL) based polyurethane (PU).
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Affiliation(s)
- Chien-Hsin Wu
- Institute of Polymer Science and Engineering
- National Taiwan University
- Taipei 106
- Taiwan
| | - Shi-Min Shau
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402
- Taiwan
| | - Shin-Chih Liu
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402
- Taiwan
| | - Shenghong A. Dai
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402
- Taiwan
| | - Su-Chen Chen
- Department of Energy and Materials Technology
- Hsiuping University of Science and Technology
- Taichung 412
- Taiwan
| | - Rong-Ho Lee
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402
- Taiwan
| | - Chi-Fa Hsieh
- Chung-Shan Institute of Technology
- Taoyuan 325
- Taiwan
| | - Ru-Jong Jeng
- Institute of Polymer Science and Engineering
- National Taiwan University
- Taipei 106
- Taiwan
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