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Wu CH, Huang YC, Chen WL, Lin YY, Dai SA, Tung SH, Jeng RJ. Size-dependent phase separation and thermomechanical properties of thermoplastic polyurethanes. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123075] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wu CH, Huang YC, Lai TH, Chiu SH, Uchibe N, Lin HW, Chiu WY, Tung SH, Jeng RJ. Facile synthesis toward self-dispersible waterborne comb-like Poly(hydroxyaminoethers). POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122464] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Chang HH, Tseng YT, Huang SW, Kuo YF, Yeh CL, Wu CH, Huang YC, Jeng RJ, Lin JJ, Lin CP. Evaluation of Carbon Dioxide-Based Urethane Acrylate Composites for Sealers of Root Canal Obturation. Polymers (Basel) 2020; 12:polym12020482. [PMID: 32098145 PMCID: PMC7077711 DOI: 10.3390/polym12020482] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/14/2020] [Accepted: 02/18/2020] [Indexed: 11/16/2022] Open
Abstract
A new root canal sealer was developed based on urethane acrylates using polycarbonate polyol (PCPO), a macrodiol prepared in the consumption of carbon dioxide as feedstock. The superior mechanical properties and biostability nature of PCPO-based urethane acrylates were then co-crosslinked with a difunctional monomer of tripropylene glycol diarylate (TPGDA) as sealers for resin matrix. Moreover, nanoscale silicate platelets (NSPs) immobilized with silver nanoparticles (AgNPs) and/or zinc oxide nanoparticles (ZnONPs) were introduced to enhance the antibacterial effect for the sealers. The biocompatibility and the antibacterial effect were investigated by Alamar blue assay and LDH assay. In addition, the antibacterial efficiency was performed by using Enterococcus faecalis (E. faecalis) as microbial response evaluation. These results demonstrate that the PCPO-based urethane acrylates with 50 ppm of both AgNP and ZnONP immobilized on silicate platelets, i.e., Ag/ZnO@NSP, exhibited great potential as an antibacterial composite for the sealer of root canal obturation.
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Affiliation(s)
- Hao-Hueng Chang
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei 100, Taiwan; (H.-H.C.); (S.-W.H.); (Y.-F.K.); (C.-L.Y.)
- Department of Dentistry, National Taiwan University Hospital, Taipei 100, Taiwan
| | - Yi-Ting Tseng
- Institute of Polymer Science and Engineering and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 100, Taiwan; (Y.-T.T.); (C.-H.W.); (Y.-C.H.)
| | - Sheng-Wun Huang
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei 100, Taiwan; (H.-H.C.); (S.-W.H.); (Y.-F.K.); (C.-L.Y.)
| | - Yi-Fang Kuo
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei 100, Taiwan; (H.-H.C.); (S.-W.H.); (Y.-F.K.); (C.-L.Y.)
| | - Chun-Liang Yeh
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei 100, Taiwan; (H.-H.C.); (S.-W.H.); (Y.-F.K.); (C.-L.Y.)
| | - Chien-Hsin Wu
- Institute of Polymer Science and Engineering and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 100, Taiwan; (Y.-T.T.); (C.-H.W.); (Y.-C.H.)
| | - Ying-Chi Huang
- Institute of Polymer Science and Engineering and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 100, Taiwan; (Y.-T.T.); (C.-H.W.); (Y.-C.H.)
| | - Ru-Jong Jeng
- Institute of Polymer Science and Engineering and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 100, Taiwan; (Y.-T.T.); (C.-H.W.); (Y.-C.H.)
- Correspondence: (R.-J.J.); (J.-J.L.); (C.-P.L.); Tel.: +886-2-3366-5884 (R.-J.J.); +886-4228-57261 (J.-J.L.); +886-2-2312-3456 (ext. 67400) (C.-P.L.)
| | - Jiang-Jen Lin
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung 400, Taiwan
- Correspondence: (R.-J.J.); (J.-J.L.); (C.-P.L.); Tel.: +886-2-3366-5884 (R.-J.J.); +886-4228-57261 (J.-J.L.); +886-2-2312-3456 (ext. 67400) (C.-P.L.)
| | - Chun-Pin Lin
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei 100, Taiwan; (H.-H.C.); (S.-W.H.); (Y.-F.K.); (C.-L.Y.)
- Department of Dentistry, National Taiwan University Hospital, Taipei 100, Taiwan
- Correspondence: (R.-J.J.); (J.-J.L.); (C.-P.L.); Tel.: +886-2-3366-5884 (R.-J.J.); +886-4228-57261 (J.-J.L.); +886-2-2312-3456 (ext. 67400) (C.-P.L.)
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Yeh SC, Lee JY, Hsieh CT, Huang YC, Wang KS, Wu CH, Hu CC, Chiang SC, Jeng RJ. Synthesis and Properties of Cyclopentyl Cardo-Type Polyimides Based on Dicyclopentadiene. Polymers (Basel) 2019; 11:E2029. [PMID: 31817775 PMCID: PMC6960653 DOI: 10.3390/polym11122029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/02/2019] [Accepted: 12/05/2019] [Indexed: 01/25/2023] Open
Abstract
A crucial polymer intermediate, 4-[1-(4-hydroxyphenyl)cyclopentyl]-phenol (bisphenol CP), was developed from dicyclopentadiene (DCPD), a key byproduct of the C5 fraction in petrochemicals. On the basis of bisphenol CP, a diamine, 4,4'-((cyclopentane-1,1-diylbis(4,1-phenylene))bis(oxy))-dianiline (cyclopentyl diamine; CPDA) was subsequently obtained through a nucleophilic substitution of bisphenol CP, followed by the hydrogenation process. By using the CPDA diamine, a series of polyimides with cyclopentyl (cardo) units on the backbone were prepared along with a reference polyimide (API-6F) based on 4,4'-(4,4'-(propane-2,2-diyl)bis(4,1-phenylene))bis(oxy)dianiline (BPAA), and 4,4'-(hexafluoroisopropylidene)-diphthalic anhydride (6FDA) for the exploration of structure-properties relationship. Thanks to the presence of cyclopentyl units, this type of cardo polyimides exhibited comparable tensile properties, especially a large elongation (25.4%). It is also worth noting that CPI-6F exhibited better solubility in organic solvents, such as NMP, DMAc, THF, and chloroform, than the other PIs. Gas separation properties were also evaluated for these cardo-type polyimides.
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Affiliation(s)
- Shih-Chieh Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (S.-C.Y.); (J.-Y.L.); (C.-T.H.); (Y.-C.H.); (K.-S.W.)
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan
| | - Jen-Yu Lee
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (S.-C.Y.); (J.-Y.L.); (C.-T.H.); (Y.-C.H.); (K.-S.W.)
| | - Chung-Ta Hsieh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (S.-C.Y.); (J.-Y.L.); (C.-T.H.); (Y.-C.H.); (K.-S.W.)
| | - Ya-Chin Huang
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (S.-C.Y.); (J.-Y.L.); (C.-T.H.); (Y.-C.H.); (K.-S.W.)
| | - Kuan-Syun Wang
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (S.-C.Y.); (J.-Y.L.); (C.-T.H.); (Y.-C.H.); (K.-S.W.)
| | - Chien-Hsin Wu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (S.-C.Y.); (J.-Y.L.); (C.-T.H.); (Y.-C.H.); (K.-S.W.)
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan
| | - Chien-Chieh Hu
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Shu-Chen Chiang
- Chung Shan Institute of Science and Technology, Taoyuan 325, Taiwan;
| | - Ru-Jong Jeng
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (S.-C.Y.); (J.-Y.L.); (C.-T.H.); (Y.-C.H.); (K.-S.W.)
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan
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