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Chen X, Li C, Ding Y, Li Y, Li J, Sun L, Wei J, Wei X, Wang H, Zhang K, Pan L, Li Y. Fully Bio-Based and Supertough PLA Blends via a Novel Interlocking Strategy Combining Strong Dipolar Interactions and Stereocomplexation. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiangjian Chen
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Chuanxi Li
- Advanced Materials Research Center, Petrochemical Research Institute, Petro China Company Limited, Beijing 102206, China
| | - Yingli Ding
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Yang Li
- Advanced Materials Research Center, Petrochemical Research Institute, Petro China Company Limited, Beijing 102206, China
| | - Jinshan Li
- Advanced Materials Research Center, Petrochemical Research Institute, Petro China Company Limited, Beijing 102206, China
| | - Liming Sun
- Advanced Materials Research Center, Petrochemical Research Institute, Petro China Company Limited, Beijing 102206, China
| | - Jie Wei
- Advanced Materials Research Center, Petrochemical Research Institute, Petro China Company Limited, Beijing 102206, China
| | - Xiaohui Wei
- Advanced Materials Research Center, Petrochemical Research Institute, Petro China Company Limited, Beijing 102206, China
| | - Hao Wang
- State Key Laboratory of Heavy Oil Processing and the Key Laboratory of Catalysis of CNPC, China University of Petroleum, Beijing 102249, China
| | - Kunyu Zhang
- Advanced Materials Research Center, Petrochemical Research Institute, Petro China Company Limited, Beijing 102206, China
| | - Li Pan
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Yuesheng Li
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
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Fan T, Qin J, Dong F, Meng X, Li Y, Wang Y, Liu Q, Wang G. Effects on the crystallization behavior and biocompatibility of poly(LLA-ran-PDO-ran-GA) with poly(d-lactide) as nucleating agents. RSC Adv 2022; 12:10711-10724. [PMID: 35424991 PMCID: PMC8985167 DOI: 10.1039/d2ra00525e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/29/2022] [Indexed: 11/23/2022] Open
Abstract
The blends of poly(l-lactide acid-p-dioxanone-glycolide) (PLPG) with poly(d-lactide) (PDLA) (PLPG/PDLA) were prepared by a solution-casting method. The effects of PDLA on the properties of the PLPG were studied. DSC and WAXD results confirmed that PLA stereocomplex (sc-PLA) crystals were formed by blending PLLA segments in PLPG with PDLA, and the melting endotherm for both PLLA and sc-PLA relied on PDLA content. The non-isothermal crystallization results indicated that the crystallization process was remarkably accelerated by the addition of PDLA. Meanwhile, the results of isothermal crystallization indicated that the half-time of crystallization decreased with the increase of PDLA content. Besides, the enzymatic degradation behavior of the samples showed that with the increase of PDLA content, the mass loss gradually decreased. Furthermore, TGA and DTG results indicated that the thermal degradation of the samples was a complex process. Moreover, the biocompatibility of the samples was tested by cell culture and using CCK-8 and live/dead staining. Results showed that the samples possessed lower cytotoxicity. Therefore, the PLPG/PDLA blends are promising candidate materials in biomedical applications.
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Affiliation(s)
- Tiantang Fan
- College of Medical Engineering & the Key Laboratory for Medical Functional Nanomaterials, Jining Medical University Jining 272067 P. R. China
| | - Jingwen Qin
- The Institute for Translational Nanomedicine, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine Shanghai 200092 P. R. China
| | - Fen Dong
- Affiliated Hospital of Jianghan University Wuhan City 430015 P. R. China
| | - Xiao Meng
- Nanjing Recongene Biomedical Technologies, Ltd Inc. Nanjing 210032 P. R. China
| | - Yanqi Li
- College of Medical Engineering & the Key Laboratory for Medical Functional Nanomaterials, Jining Medical University Jining 272067 P. R. China
| | - Ying Wang
- College of Medical Engineering & the Key Laboratory for Medical Functional Nanomaterials, Jining Medical University Jining 272067 P. R. China
| | - Qing Liu
- The Institute for Translational Nanomedicine, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine Shanghai 200092 P. R. China
- Beijing Advanced Medical Technologies, Ltd Inc. Beijing 100085 People's Republic of China
| | - Guannan Wang
- College of Medical Engineering & the Key Laboratory for Medical Functional Nanomaterials, Jining Medical University Jining 272067 P. R. China
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Deokar M, Garnaik B, Sivaram S. Toughening Poly(l-lactide) Blends: Effectiveness of Sequence-Controlled Six-Arm Star-Branched Block Copolymers of Poly(l-lactide) and Poly(ε-caprolactone). ACS OMEGA 2022; 7:9118-9129. [PMID: 35350312 PMCID: PMC8945082 DOI: 10.1021/acsomega.1c04486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 02/23/2022] [Indexed: 05/14/2023]
Abstract
Well-defined six-arm star-branched bio-degradable block copolymers of l-lactide and ε-caprolactone were prepared using controlled ring-opening polymerization and a sequential monomer addition method using dipentaerythritol as the initiator core and organocatalysts at low temperatures in solution. Sequence of enchainment was changed by reversing the order of monomer addition giving, either, a crystalline PLA block or an amorphous PCL block as the outer segment. Well-defined six-arm poly(ε-caprolactone-b-l-lactide, 6s-PCL-b-PLA) block copolymers were obtained with a range of segment molecular weights. However, in the case of six-arm poly(l-lactide-b-ε-caprolactone, 6s-PLA-b-PCL), disruption of the block structure was observed on account of competing transesterification reactions accompanying a chain-growth reaction. Such sequence-controlled block copolymers showed interesting phase morphologies, as evidenced by differential scanning calorimetry (DSC) studies. 6s-PCL-b-PLA showed two glass-transition temperatures and two melting temperatures characteristic of the amorphous and crystalline blocks. 6s-PCL-b-PLA and 6s-PLA-b-PCL with different segment chain lengths were solution blended (10 wt %) with a commercially sourced PLA. All the blends were highly transparent. The structure and properties of the blend were examined by DSC, measurement of mechanical properties, and scanning electron microscopy. The results show that a phase-separated 6s-PCL-b-PLA copolymer results in two- to three-fold improvement in tensile toughness without the loss of modulus. A possible hypothesis for the mechanism of tensile toughness in the blend has been proposed.
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Affiliation(s)
- Megha
D. Deokar
- Polymer
Science and Engineering Division, Council
of Scientific and Industrial Research-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411008, India
- Academy
of Scientific and Innovative Research AcSIR Headquarters, Council of Scientific and Industrial Research-Human
Resource Development Centre Campus Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh 201002, India
| | - Baijayantimala Garnaik
- Polymer
Science and Engineering Division, Council
of Scientific and Industrial Research-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411008, India
- Academy
of Scientific and Innovative Research AcSIR Headquarters, Council of Scientific and Industrial Research-Human
Resource Development Centre Campus Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh 201002, India
| | - Swaminathan Sivaram
- Indian
Institute of Science Education and Research, Dr Homi Bhabha Road, Pune 411008, India
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Chen Y, Wang L, Zhong C, Chen WS, Li SC, Shao J, Li G, Hou HQ. The isothermal crystallization kinetic of poly(L-lactide)-block-poly(ethylene glycol) block copolymers (PLLA-PEG): Effect of block lengths of PEG and PLLA. CrystEngComm 2022. [DOI: 10.1039/d2ce00448h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Poly(ethylene glycol)-block-poly(L-lactide) (PEG-PLLA) is a biodegradable copolymer which widely applied to medicine and drug system, and the morphology, organization and mechanical properties were extensively investigated. However, the crystallization kinetic were...
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Huang S, Li H, Jiang S. Pressure induced crystallization and in situ simultaneous SAXS/WAXS investigations on structure transitions. CrystEngComm 2020. [DOI: 10.1039/d0ce00548g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A phase diagram of PLLA crystal structures as a function of crystallization temperature (Tc) and pressure (Pc).
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Affiliation(s)
- Shaoyong Huang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Hongfei Li
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Shichun Jiang
- School of Materials Science and Engineering
- Tianjin University
- Tianjin
- China
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Generalized kinetics for thermal degradation and melt rheology for poly (lactic acid)/poly (butylene succinate)/functionalized chitosan based reactive nanobiocomposite. Int J Biol Macromol 2019; 141:831-842. [DOI: 10.1016/j.ijbiomac.2019.09.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 09/06/2019] [Accepted: 09/07/2019] [Indexed: 02/07/2023]
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7
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Zhou D, Huang S, Sun J, Bian X, Li G, Chen X. Unique Fractional Crystallization of Poly(l-lactide)/Poly(l-2-hydroxyl-3-methylbutanoic acid) Blend. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00855] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dongdong Zhou
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of
Chinese Academy of Sciences, Beijing 100049, China
| | - Shaoyong Huang
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jingru Sun
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xinchao Bian
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Gao Li
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xuesi Chen
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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Zhang B, Bian X, Xiang S, Li G, Chen X. Synthesis of PLLA-based block copolymers for improving melt strength and toughness of PLLA by in situ reactive blending. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2016.11.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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