1
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de Melo Morgado GF, de Moura NK, Martins EF, Escanio CA, Backes EH, Marini J, Passador FR. Effect of blend ratio on thermal, mechanical, and shape memory properties of poly (lactic acid)/thermoplastic polyurethane bio-blends. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03389-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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2
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Muhammad Ghozali, Triwulandari E, Restu WK, Meliana Y, Haryono A. Synthesis of Polyethylene Glycol-9,10-dihydroxy Monostearate as Palm Oil-Based Polyol and Its Application on the Preparation of Polylactic acid/Polyurethane Block Copolymer. POLYMER SCIENCE SERIES A 2022. [DOI: 10.1134/s0965545x23700621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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3
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Poly(L‐lactic acid) and poly(ε‐caprolactone) based
ultra‐strong
and tough thermoplastic polyurethane‐urea with multi‐urea segments and oriented microstructures. J Appl Polym Sci 2022. [DOI: 10.1002/app.53145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Wang W, Liu Y, Ye L, Coates P, Caton-Rose F, Zhao X. Biocompatibility improvement and controlled in vitro degradation of poly (lactic acid)-b-poly(lactide-co-caprolactone) by formation of highly oriented structure for orthopedic application. J Biomed Mater Res B Appl Biomater 2022; 110:2480-2493. [PMID: 35674722 DOI: 10.1002/jbm.b.35106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 04/25/2022] [Accepted: 05/20/2022] [Indexed: 12/21/2022]
Abstract
Poly (lactic acid) (PLA) has been proposed as a promising orthopedic implant material, whereas insufficient mechanical strength, unsatisfied biocompatibility and inappropriate degradation rate restrict its further application. In this work, self-reinforced poly (lactic acid)-b-poly(lactide-co-caprolactone) (PLA-b-PLCL) block copolymer with long-chain branches was fabricated through two-stage orientation. Compared with smooth and hydrophobic PLA surface, the surface of PLA-b-PLCL presented micro-phase separated structure with improved hydrophilicity, and cells seeded on it showed improved adhesion/proliferation and high alkaline phosphatase (ALP) activity. After the 1st stage orientation at temperature higher than Tg1 (glass transition temperature of PLA phase), the amount of CH3 and CO groups on surface of PLA-b-PLCL increased, while "groove-ridge" structure formed, resulting in enhancement of surface hydrophobicity. After the 2nd stage orientation at Tg1 ~ Tg2 (glass transition temperature of PLCL phase), surface hydrophobicity/amount of CO groups further increased and "groove-ridge" structure became more significant. Due to suitable wettability and enhanced material-cell mechanical interlocking, cell proliferation/ALP activity were improved and a continuous cell layer formed on sample surface. During in vitro degradation in phosphate buffered saline solution, by introduction of PLCL segments, the crystallinity decreased and solution absorption increased, resulting in a rapid deterioration of mechanical properties. After the 1st stage orientation, a dense microfibrillar structure with high crystallinity formed, which hindered diffusion of solution and delay hydrolytic degradation. After the 2nd stage orientation, PLCL segments were arranged more closely, resulting in a further inhibition of degradation, which was helpful for controlling the strength decay rate of PLA as bone fixation materials.
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Affiliation(s)
- Wuyou Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, China
| | - Yalong Liu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, China
| | - Lin Ye
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, China
| | - Phil Coates
- School of Engineering, Design and Technology, University of Bradford, Bradford, UK
| | - Fin Caton-Rose
- School of Engineering, Design and Technology, University of Bradford, Bradford, UK
| | - Xiaowen Zhao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, China
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5
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Su X, Jia S, Cao L, Yu D. High performance polylactic acid/thermoplastic polyurethane blends with in‐situ fibrillated morphology. J Appl Polym Sci 2021. [DOI: 10.1002/app.51014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaolong Su
- School of Chemistry, State Key Laboratory of Electrical Insulation and Power Equipments Xi'an Jiaotong University Xi'an Shaanxi China
| | - Shikui Jia
- School of Materials Science and Engineering Shaanxi University of Technology Hanzhong Shaanxi China
| | - Le Cao
- School of Materials Science and Engineering Shaanxi University of Technology Hanzhong Shaanxi China
| | - Demei Yu
- School of Chemistry, State Key Laboratory of Electrical Insulation and Power Equipments Xi'an Jiaotong University Xi'an Shaanxi China
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6
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Hu Q, Zhang R, Zhang H, Yang D, Liu S, Song Z, Gu Y, Ramalingam M. Topological Structure Design and Fabrication of Biocompatible PLA/TPU/ADM Mesh with Appropriate Elasticity for Hernia Repair. Macromol Biosci 2021; 21:e2000423. [PMID: 33870647 DOI: 10.1002/mabi.202000423] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/21/2021] [Indexed: 11/06/2022]
Abstract
The meshes for hernia repair result in many problems that are related to complications including chronic pain and limited movement due to inadequate mechanical strength, non-absorbability, or low elasticity. In this study, degradable polylactic acid (PLA), synthetic thermoplastic polyurethane (TPU), and acellular dermal matrix (ADM) powders are combined to prepare a novel PLA/TPU/ADM mesh with three different topological structures (square, circular, and diamond) by 3D printing. The physicochemical properties and structural characteristics of mesh are studied, the results show that the diamond structure mesh with the pore size of 3 mm has sufficient elasticity and tensile strength, which provides the efficient mechanical strength required for hernia repair (16 N cm-1 ) and the value more than polypropylene(PP) mesh. Besides, in vitro and in vivo experiments demonstrate human umbilical vein endothelial cells could successfully proliferate on the PLA/TPU/ADM mesh whose biocompatibility with the host is shown using a rat model of abdominal wall defect. In conclusion, the results of this study demonstrate that the PLA/TPU/ADM mesh may be considered a good choice for hernia repair as its potential to overcome the elastic and strength challenges associated with a highly flexible abdominal wall, as well as its good biocompatibility.
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Affiliation(s)
- Qingxi Hu
- Rapid Manufacturing Engineering Center, Shanghai University, Shanghai, 200444, China.,Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai, 200072, China
| | - Rennan Zhang
- Rapid Manufacturing Engineering Center, Shanghai University, Shanghai, 200444, China
| | - Haiguang Zhang
- Rapid Manufacturing Engineering Center, Shanghai University, Shanghai, 200444, China.,Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai, 200072, China
| | - Dongchao Yang
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Suihong Liu
- Rapid Manufacturing Engineering Center, Shanghai University, Shanghai, 200444, China
| | - Zhicheng Song
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Yan Gu
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Murugan Ramalingam
- Biomaterials and Organ Engineering Group, Centre for Biomaterials, Cellular and Molecular Theranostics, School of Mechanical Engineering, Vellore Institute of Technology, Vellore, 632014, India
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7
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Penhasi A, Gertler A, Baluashvili I, Elzinaty O, Shalev DE. High modulus thermoplastic segmented polyurethane/poly(L‐lactide) blends as potential candidates for structural implantable drug delivery systems: I. Structure‐properties relationship study. J Appl Polym Sci 2020. [DOI: 10.1002/app.49517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Adel Penhasi
- Department of Pharmaceutical EngineeringAzrieli College of Engineering Jerusalem Jerusalem Israel
- Department of Research and DevelopmentPolyCaps Ltd. Tel Aviv Israel
| | - Aharon Gertler
- Department of Research and DevelopmentTremco‐ Rubber and Plastic Products Netanya Israel
| | | | - Omar Elzinaty
- Department of Pharmaceutical EngineeringAzrieli College of Engineering Jerusalem Jerusalem Israel
| | - Deborah E. Shalev
- Department of Pharmaceutical EngineeringAzrieli College of Engineering Jerusalem Jerusalem Israel
- Wolfson Centre for Applied Structural BiologyThe Hebrew University of Jerusalem Jerusalem Israel
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8
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Li R, Ye L, Zhao X, Coates P, Caton-Rose F. Enhancing Poly(lactic acid) Microcellular Foams by Formation of Distinctive Crystalline Structures. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00537] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ruiguang Li
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Lin Ye
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Xiaowen Zhao
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Phil Coates
- School of Engineering, Design and Technology, University of Bradford, Bradford BD7 1AZ, U.K
| | - Fin Caton-Rose
- School of Engineering, Design and Technology, University of Bradford, Bradford BD7 1AZ, U.K
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9
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Song D, Wang K, Shen J, Zhao L, Xu N, Pang S, Pan L. Effects of Organic Montmorillonite (OMMT) and Pre-Orientation on Property of Poly(l-lactic acid) (PLLA)/Ethylene Propylene Diene Monomer (EPDM) Blends. Polymers (Basel) 2020; 12:polym12010106. [PMID: 31948006 PMCID: PMC7023235 DOI: 10.3390/polym12010106] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/13/2019] [Accepted: 01/01/2020] [Indexed: 11/17/2022] Open
Abstract
Poly(l-lactic acid)/ethylene propylene diene monomer/organic montmorillonite (PLLA/EPDM/OMMT) samples were melt-compounded and then processed into sheets via two routes, namely, compression-molding and calendering. Tensile performance, morphology, and thermal property of the samples were investigated. Tensile test showed that the incorporation of OMMT resulted in significant enhancement in the tensile ductility of the PLLA/EPDM samples. SEM observation revealed that EPDM domain size decreased largely with increasing OMMT loading, indicating the compatibility of OMMT with PLLA/EPDM blends. Moreover, the elongation at break, tensile yield strength, and modulus of the calendered samples were found to be much higher than those of the compression-molded samples. It can be attributed to the pre-oriented rigid amorphous fraction of PLLA matrix and pre-stretched EPDM phases in the calendered samples produced by the stretching/shearing effect of calendering. Compared to the spherical/ellipsoidal EPDM particles in the compression-molded samples, these stretched EPDM phases with higher aspect ratio in the calendered samples can be more effective to initiate craze, and terminate the craze growing to a crack along transversal direction. Therefore, the calendered samples show a better tensile ductility than the compression-molded ones. Moreover, annealing was carried out to increase the crystallinity of the samples. Tensile performance, morphology, and thermal property of the annealed samples were also systematically investigated.
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Affiliation(s)
- Di Song
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China; (D.S.); (K.W.); (J.S.); (L.Z.)
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China; (S.P.); (L.P.)
| | - Kai Wang
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China; (D.S.); (K.W.); (J.S.); (L.Z.)
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China; (S.P.); (L.P.)
| | - Jianing Shen
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China; (D.S.); (K.W.); (J.S.); (L.Z.)
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China; (S.P.); (L.P.)
| | - Long Zhao
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China; (D.S.); (K.W.); (J.S.); (L.Z.)
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China; (S.P.); (L.P.)
| | - Nai Xu
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China; (D.S.); (K.W.); (J.S.); (L.Z.)
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China; (S.P.); (L.P.)
- Correspondence: ; Tel.: +86-1313-602-3445
| | - Sujuan Pang
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China; (S.P.); (L.P.)
- School of Science, Hainan University, Haikou 570228, China
| | - Lisha Pan
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China; (S.P.); (L.P.)
- School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
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10
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Poly(lactic acid)/p-phenylenediamine functionalized graphene oxidized nanocomposites: Preparation, rheological behavior and biodegradability. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109341] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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11
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Haugan IN, Lee B, Maher MJ, Zografos A, Schibur HJ, Jones SD, Hillmyer MA, Bates FS. Physical Aging of Polylactide-Based Graft Block Polymers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01434] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
| | | | | | | | | | - Seamus D. Jones
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
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12
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Li R, Li J, Zhao X, Ye L, Coates P, Caton-Rose F. Controlled in vitro degradation behavior of highly oriented long-chain-branched poly(lactic acid) produced by solid-phase die drawing. J Biomed Mater Res A 2019; 107:1522-1531. [PMID: 30821039 DOI: 10.1002/jbm.a.36665] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 01/31/2019] [Accepted: 02/21/2019] [Indexed: 11/12/2022]
Abstract
Highly oriented long-chain-branched poly(lactic acid) (LCB-PLA) was fabricated through solid-phase die drawing technology, and the in vitro degradation behavior of the oriented samples in phosphate-buffered saline (PBS) was studied. During degradation, the weight retention and molecular weight for both PLA and LCB-PLA increased with the increase of draw ratio. Moreover, the degradation autocatalytic effect was delayed, and the deterioration of mechanical strength was reduced by orientation, which was beneficial for controlling the degradation degree and decay rate of strength for PLA as bone fixation materials. The influence mechanism of orientation on the in vitro degradation of PLA was explored. The degradation of PLA in PBS was ascribed to the hydrolytic degradation of ester bonds on the molecular chain. By orientation, a dense microfibrillar crystalline structure formed both on the surface and inside of PLA samples, limiting the diffusion and absorption of PBS molecules into the PLA matrix effectively, inhibiting the hydrolytic degradation of ester bonds, and thus delaying the deterioration of mechanical properties of PLA. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2019.
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Affiliation(s)
- Ruiguang Li
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu, China
| | - Jiafeng Li
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu, China
| | - Xiaowen Zhao
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu, China
| | - Lin Ye
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu, China
| | - Phil Coates
- School of Engineering, Design and Technology, University of Bradford, Bradford, United Kingdom
| | - Fin Caton-Rose
- School of Engineering, Design and Technology, University of Bradford, Bradford, United Kingdom
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13
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Xiaochun Y, Yang L, Di C, Yanhong F, Guangjian H. Improvements in thermal conductivity and mechanical properties of HDPE/nano‐SiC composites by the synergetic effect of extensional deformation and ISBS. J Appl Polym Sci 2019. [DOI: 10.1002/app.47648] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yin Xiaochun
- Key Laboratory of Polymer Processing Engineering of Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSouth China University of Technology Guangzhou 510640 China
| | - Li Yang
- Key Laboratory of Polymer Processing Engineering of Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSouth China University of Technology Guangzhou 510640 China
| | - Cheng Di
- Key Laboratory of Polymer Processing Engineering of Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSouth China University of Technology Guangzhou 510640 China
| | - Feng Yanhong
- Key Laboratory of Polymer Processing Engineering of Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSouth China University of Technology Guangzhou 510640 China
| | - He Guangjian
- Key Laboratory of Polymer Processing Engineering of Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSouth China University of Technology Guangzhou 510640 China
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14
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Ahmed MF, Li Y, Yao Z, Cao K, Zeng C. TPU/PLA blend foams: Enhanced foamability, structural stability, and implications for shape memory foams. J Appl Polym Sci 2018. [DOI: 10.1002/app.47416] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mohammad Faisal Ahmed
- Industrial and Manufacturing Engineering; FAMU-FSU College of Engineering; Tallahassee Florida 32310
| | - Yan Li
- Industrial and Manufacturing Engineering; FAMU-FSU College of Engineering; Tallahassee Florida 32310
- High-Performance Materials Institute; Florida State University; Tallahassee Florida 32310
| | - Zhen Yao
- Institute of Polymerization and Polymer Engineering, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Kun Cao
- Institute of Polymerization and Polymer Engineering, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Changchun Zeng
- Industrial and Manufacturing Engineering; FAMU-FSU College of Engineering; Tallahassee Florida 32310
- High-Performance Materials Institute; Florida State University; Tallahassee Florida 32310
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15
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Geng Z, Zhen W, Song Z, Wang X. Synthesis, characterization of layered double hydroxide-poly(methylmethacrylate) graft copolymers via activators regenerated by electron transfer for atom transfer radical polymerization and its effect on the performance of poly(lactic acid). POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4283] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhongxing Geng
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region; Xinjiang University; Urumqi 830046 China
| | - Weijun Zhen
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region; Xinjiang University; Urumqi 830046 China
| | - Zhongbo Song
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region; Xinjiang University; Urumqi 830046 China
| | - Xuefeng Wang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region; Xinjiang University; Urumqi 830046 China
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16
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Li J, Li Z, Ye L, Zhao X, Coates P, Caton-Rose F. Structure and biocompatibility improvement mechanism of highly oriented poly(lactic acid) produced by solid die drawing. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.09.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Yin X, Wang L, Li S, He G, Yang Z, Feng Y, Qu J. Preparation and characterization of carbon fiber/polylactic acid/thermoplastic polyurethane (CF/PLA/TPU) composites prepared by a vane mixer. JOURNAL OF POLYMER ENGINEERING 2017. [DOI: 10.1515/polyeng-2016-0144] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Various quantities of carbon fibers (CFs) (from 5% to 20% in weight) were added to matrix by melt blending to produce polylactic acid (PLA)/thermoplastic polyurethane (TPU)/CF composites. Differential scanning calorimetry measurements revealed that the CF content and mixing time had little influence on the crystallization and melting behavior of PLA. Thermogravimetric analysis showed that the introduction of CFs tended to decrease the thermal stability of PLA/TPU/CF composites, and the increase of mixing time tended to increase the thermal stability of PLA/TPU/CF composites when the mixing time is <5 min. Rheological results showed that all the samples exhibited non-Newtonian and shear thinning characteristics. The storage modulus and complex viscosity both increased with the increase of the CF content. It also showed that the increase of mixing time tended to increase the storage modulus and complex viscosity of PLA/TPU/CF composites when the mixing time is <5 min. Scanning electron microscopy images showed that the TPU/PLA blends contain a continuous PLA phase with evenly distributed TPU particles in the size range of 0.25–3 μm, and the blends are immiscible at the micron scale. Mechanical properties showed that the addition of proper CF content could lead to an obvious increase (about 11.43%) in tensile strength.
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18
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Preparation of carboxymethyl chitosan nanofibers through electrospinning the ball-milled nanopowders with poly (lactic acid) and the blood compatibility of the electrospun NCMC/PLA mats. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1224-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Chen Y, Han L, Li Z, Kong J, Wu D, Cao Z, Dong L. Effect of uniaxial pre-stretching on the microstructure and mechanical properties of poly[(ethylene oxide)-block-(amide-12)]-toughened poly(lactic acid) blend. RSC Adv 2017. [DOI: 10.1039/c6ra25729a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The mechanical strength of the pre-stretched blend was dramatically improved without too much sacrifice of the toughness.
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Affiliation(s)
- Yunjing Chen
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Changchun 130022
- China
- University of Science and Technology of China
| | - Lijing Han
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Changchun 130022
- China
| | - Zonglin Li
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Changchun 130022
- China
- University of Chinese Academy of Sciences
| | - Junjun Kong
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Changchun 130022
- China
- University of Chinese Academy of Sciences
| | - Dandan Wu
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Changchun 130022
- China
- University of Chinese Academy of Sciences
| | - Zengwen Cao
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Changchun 130022
- China
- University of Science and Technology of China
| | - Lisong Dong
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Changchun 130022
- China
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20
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Špírková M, Machová L, Kobera L, Brus J, Poręba R, Serkis M, Zhigunov A. Multiscale approach to the morphology, structure, and segmental dynamics of complex degradable aliphatic polyurethanes. J Appl Polym Sci 2014. [DOI: 10.1002/app.41590] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Milena Špírková
- Institute of Macromolecular Chemistry AS CR; v.v.i., Heyrovského nám. 2, 162 06 Praha 6 Czech Republic
| | - Luďka Machová
- Institute of Macromolecular Chemistry AS CR; v.v.i., Heyrovského nám. 2, 162 06 Praha 6 Czech Republic
| | - Libor Kobera
- Institute of Macromolecular Chemistry AS CR; v.v.i., Heyrovského nám. 2, 162 06 Praha 6 Czech Republic
| | - Jiří Brus
- Institute of Macromolecular Chemistry AS CR; v.v.i., Heyrovského nám. 2, 162 06 Praha 6 Czech Republic
| | - Rafał Poręba
- Institute of Macromolecular Chemistry AS CR; v.v.i., Heyrovského nám. 2, 162 06 Praha 6 Czech Republic
| | - Magdalena Serkis
- Institute of Macromolecular Chemistry AS CR; v.v.i., Heyrovského nám. 2, 162 06 Praha 6 Czech Republic
| | - Alexander Zhigunov
- Institute of Macromolecular Chemistry AS CR; v.v.i., Heyrovského nám. 2, 162 06 Praha 6 Czech Republic
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21
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Jašo V, Cvetinov M, Rakić S, Petrović ZS. Bio-plastics and elastomers from polylactic acid/thermoplastic polyurethane blends. J Appl Polym Sci 2014. [DOI: 10.1002/app.41104] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Vladislav Jašo
- Kansas Polymer Research Center, Pittsburg State University; Pittsburg Kansas 66762 USA
| | - Miroslav Cvetinov
- Department of Physics, Faculty of Sciences; University of Novi Sad; 21000 Novi Sad Serbia
| | - Srđan Rakić
- Department of Physics, Faculty of Sciences; University of Novi Sad; 21000 Novi Sad Serbia
| | - Zoran S. Petrović
- Kansas Polymer Research Center, Pittsburg State University; Pittsburg Kansas 66762 USA
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