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Phuangthong P, Li W, Shen J, Nofar M, Worajittiphon P, Srithep Y. The Effect of Polyethylene Glycol on the Non-Isothermal Crystallization of Poly(L-lactide) and Poly(D-lactide) Blends. Polymers (Basel) 2024; 16:2129. [PMID: 39125155 PMCID: PMC11313765 DOI: 10.3390/polym16152129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 07/12/2024] [Accepted: 07/24/2024] [Indexed: 08/12/2024] Open
Abstract
The formation of polylactide stereocomplex (sc-PLA), involving the blending of poly(L-lactide) (PLLA) and poly(D-lactide) (PDLA), enhances PLA materials by making them stronger and more heat-resistant. This study investigated the competitive crystallization behavior of homocrystals (HCs) and stereocomplex crystals (SCs) in a 50/50 PLLA/PDLA blend with added polyethylene glycol (PEG). PEG, with molecular weights of 400 g/mol and 35,000 g/mol, was incorporated at concentrations ranging from 5% to 20% by weight. Differential scanning calorimetry (DSC) analysis revealed that PEG increased the crystallization temperature, promoted SC formation, and inhibited HC formation. PEG also acted as a plasticizer, lowering both melting and crystallization temperatures. The second heating DSC curve showed that the pure PLLA/PDLA blend had a 57.1% fraction of SC while adding 5% PEG with a molecular weight of 400 g/mol resulted in complete SC formation. In contrast, PEG with a molecular weight of 35,000 g/mol was less effective, allowing some HC formation. Additionally, PEG consistently promoted SC formation across various cooling rates (2, 5, 10, or 20 °C/min), demonstrating a robust influence under different conditions.
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Affiliation(s)
- Panthima Phuangthong
- Manufacturing and Materials Research Unit, Department of Manufacturing Engineering, Faculty of Engineering, Mahasarakham University, Mahasarakham 44150, Thailand; (P.P.); (W.L.); (J.S.)
| | - Wenwei Li
- Manufacturing and Materials Research Unit, Department of Manufacturing Engineering, Faculty of Engineering, Mahasarakham University, Mahasarakham 44150, Thailand; (P.P.); (W.L.); (J.S.)
- College of Mechanical Engineering, Hunan Mechanical & Electrical Polytechnic, Changsha 410151, China
| | - Jun Shen
- Manufacturing and Materials Research Unit, Department of Manufacturing Engineering, Faculty of Engineering, Mahasarakham University, Mahasarakham 44150, Thailand; (P.P.); (W.L.); (J.S.)
- College of Mechanical Engineering, Hunan Mechanical & Electrical Polytechnic, Changsha 410151, China
| | - Mohammadreza Nofar
- Sustainable & Green Plastics Laboratory, Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Istanbul 34469, Turkey;
| | - Patnarin Worajittiphon
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
- Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Yottha Srithep
- Manufacturing and Materials Research Unit, Department of Manufacturing Engineering, Faculty of Engineering, Mahasarakham University, Mahasarakham 44150, Thailand; (P.P.); (W.L.); (J.S.)
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2
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Wei Y, Wang Z, Zhou S, Li Z. Toughened transparent poly(L-lactic acid)/poly(D-lactide)-b-poly(butadiene)-b-poly(D-lactide) blended film with balanced strength. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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3
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Guo M, Zhao Z, Xie Z, Wu W, Wu W, Gao Q. Role of the Branched PEG- b-PLLA Block Chain in Stereocomplex Crystallization and Crystallization Kinetics for PDLA/MPEG- b-PLLA- g-glucose Blends with Different Architectures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15866-15879. [PMID: 36469019 DOI: 10.1021/acs.langmuir.2c02867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The isothermal crystallization behavior and corresponding morphology evolution of poly(d-lactic acid) (PDLA) blends with PLLA6.7k or MPEG-b-PLLA6.7k-g-glucose with different architectures and different PLLA-grafted copolymer contents were investigated. The formation of stereocomplexes (SCs) in between the chain branched structure of MPEG-b-PLLA6.7k-g-glucose and PDLA chains acting as the physical crosslinking points slows down the motion of PDLA chains, but the SCs could act as a heterogeneous nucleating agent for the late formation of homocrystals (HCs) in the blend system, accelerating the crystallization kinetics of HCs through enhancing the nucleation density. For PDLA/MPEG-b-PLLA6.7k-g-glucose blends, the mobility of SCs in the blend system and the nucleation density of SCs in the blends exhibit oppositional behavior during the isothermal crystallization at a Tc of 130 °C. The evolution of the crystal growth and structure during the isothermal crystallization process by rheometry has revealed the interesting role of the branched chains of MPEG-b-PLLA6.7k-g-glucose in the mechanism of the crystallization in PDLA blends.
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Affiliation(s)
- Mingwei Guo
- College of Chemical Engineering, Nanjing Forestry University, Nanjing210037, China
| | - Zhifeng Zhao
- College of Chemical Engineering, Hebei University of Technology, Tianjin300130, China
| | - Zhongyuan Xie
- College of Chemical Engineering, Nanjing Forestry University, Nanjing210037, China
| | - Weixin Wu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing210037, China
| | - Wenjing Wu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing210037, China
| | - Qinwei Gao
- College of Chemical Engineering, Nanjing Forestry University, Nanjing210037, China
- Jiangsu Key Lab for the Chemistry and Utilization of Agricultural and Forest Biomass, Nanjing Forestry University, Nanjing210037, China
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4
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Gu Z, Zhang J, Cao W, Liu X, Wang J, Zhang X, Chen W, Bao J. Extraordinary toughness and heat resistance enhancement of biodegradable PLA/PBS blends through the formation of a small amount of interface-localized stereocomplex crystallites during melt blending. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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5
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Jing Z, Huang X, Liu X, Liao M, Zhang Z, Li Y. Crystallization, thermal and mechanical properties of stereocomplexed poly(lactide) with flexible PLLA/PCL multiblock copolymer. RSC Adv 2022; 12:13180-13191. [PMID: 35520119 PMCID: PMC9063687 DOI: 10.1039/d2ra00461e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 03/29/2022] [Indexed: 11/21/2022] Open
Abstract
In this work, the synthesized PLLA/PCL multi-block copolymers with different compositions were introduced into a stereocomplexed poly(lactide) (sc-PLA) matrix to accelerate the stereocomplexation of PLA enantiomers and improve its inherent brittleness. The PLLA/PCL multi-block copolymers were in different compositions to adjust the molecular weight of the PLLA block. The structure, molecular weight, crystallization behavior, crystal structure and thermal stability of PLLA/PCL multi-block copolymers were investigated. The results indicated that PLLA/PCL multi-block copolymers with controllable structure and composition were successfully synthesized. On this basis, the blends of sc-PLA and PLLA/PCL multi-block copolymers were prepared by solution casting, and characterized. The results revealed that the introduction of PLLA/PCL multi-block copolymers promoted the stereocomplexation of the PLA enantiomers during the melting crystallization process to obtain a complete stereocomplexed material. But the presence of the PCL block leads to a decrease in the melting temperature of the stereocomplex and difficulty in homogeneous nucleation. Compared with sc-PLA, the elongation at break of the blends was significantly improved and their tensile strengths were only slightly reduced. And the thermal stability and mechanical properties of the blends could be adjusted by controlling the content and composition of PCL/PLLA multi-block copolymers. These results revealed that the degree of stereocomplexation and toughness of sc-PLA were improved, which may expand the application fields of PLA-based materials. The PLLA/PCL multi-block copolymer was introduced into the stereocomplexed PLA matrix, and its effect on the crystallization, thermal and mechanical properties of the stereocomplexed PLA was discussed.![]()
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Affiliation(s)
- Zhanxin Jing
- Department of Applied Chemistry, College of Chemistry and Environment, Guangdong Ocean University Zhanjiang China
| | - Xiaolan Huang
- Department of Applied Chemistry, College of Chemistry and Environment, Guangdong Ocean University Zhanjiang China
| | - Xinqi Liu
- Department of Applied Chemistry, College of Chemistry and Environment, Guangdong Ocean University Zhanjiang China
| | - Mingneng Liao
- Department of Applied Chemistry, College of Chemistry and Environment, Guangdong Ocean University Zhanjiang China
| | - Zhaoxia Zhang
- Department of Applied Chemistry, College of Chemistry and Environment, Guangdong Ocean University Zhanjiang China
| | - Yong Li
- Department of Applied Chemistry, College of Chemistry and Environment, Guangdong Ocean University Zhanjiang China
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Qi J, Xiao J, Zhang T, Zhang Y, Xiong C. Investigation of the nano-hydroxyapatite with different surface modifications on the properties of poly(lactide-co-glycolide acid)/poly(trimethylene carbonate)/nano-hydroxyapatite composites. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-020-04783-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Puthumana M, Santhana Gopala Krishnan P, Nayak SK. Chemical modifications of PLA through copolymerization. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2020. [DOI: 10.1080/1023666x.2020.1830650] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Manju Puthumana
- Department of Plastics Technology, Central Institute of Plastics Engineering and Technology, Institute of Plastics Technology, Chennai, India
| | - P. Santhana Gopala Krishnan
- Department of Plastics Technology, Central Institute of Plastics Engineering and Technology, Institute of Plastics Technology, Chennai, India
| | - Sanjay Kumar Nayak
- Department of Plastics Technology, Central Institute of Plastics Engineering and Technology, Institute of Plastics Technology, Chennai, India
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Van Gheluwe L, Buchy E, Chourpa I, Munnier E. Three-Step Synthesis of a Redox-Responsive Blend of PEG- block-PLA and PLA and Application to the Nanoencapsulation of Retinol. Polymers (Basel) 2020; 12:E2350. [PMID: 33066418 PMCID: PMC7602167 DOI: 10.3390/polym12102350] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/01/2020] [Accepted: 10/12/2020] [Indexed: 01/06/2023] Open
Abstract
Smart polymeric nanocarriers have been developed to deliver therapeutic agents directly to the intended site of action, with superior efficacy. Herein, a mixture of poly(lactide) (PLA) and redox-responsive poly(ethylene glycol)-block-poly(lactide) (PEG-block-PLA) containing a disulfide bond was synthesized in three steps. The nanoprecipitation method was used to prepare an aqueous suspension of polymeric nanocarriers with a hydrodynamic diameter close to 100 nm. Retinol, an anti-aging agent very common in cosmetics, was loaded into these smart nanocarriers as a model to measure their capacity to encapsulate and to protect a lipophilic active molecule. Retinol was encapsulated with a high efficiency with final loading close to 10% w/w. The stimuli-responsive behavior of these nanocarriers was demonstrated in vitro, in the presence of l-Glutathione, susceptible to break of disulfide bond. The toxicity was low on human keratinocytes in vitro and was mainly related to the active molecule. Those results show that it is not necessary to use 100% of smart copolymer in a nanosystem to obtain a triggered release of their content.
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Affiliation(s)
- Louise Van Gheluwe
- EA 6295 Nanomédicaments et Nanosondes, Faculté de Pharmacie, Université de Tours, 31 Avenue Monge, 37 200 Tours, France; (L.V.G.); (I.C.)
| | - Eric Buchy
- Laboratoires Eriger, 39 Rue des Granges Galand, 37550 Saint-Avertin, France;
| | - Igor Chourpa
- EA 6295 Nanomédicaments et Nanosondes, Faculté de Pharmacie, Université de Tours, 31 Avenue Monge, 37 200 Tours, France; (L.V.G.); (I.C.)
| | - Emilie Munnier
- EA 6295 Nanomédicaments et Nanosondes, Faculté de Pharmacie, Université de Tours, 31 Avenue Monge, 37 200 Tours, France; (L.V.G.); (I.C.)
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9
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Thermal and Morphological Properties of Poly(L-Lactic Acid)/Poly(D-Lactic Acid)-B-Polycaprolactone Diblock Copolymer Blends. MATERIALS 2020; 13:ma13112550. [PMID: 32503268 PMCID: PMC7321447 DOI: 10.3390/ma13112550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/28/2020] [Accepted: 05/30/2020] [Indexed: 12/04/2022]
Abstract
Due to the brittle nature of poly(lactic acid) many attempts have been made to flexibilize this polyester for applications such as thin films and foils. However, due to complex phase behavior, many drawbacks for plasticizer and blend components are described. To overcome miscibility, post crystallization and migration issues a principle of click-chemistry was employed to change the molecular characteristics from external to internal plasticization by fixation of a plastisizing unit with help of a stereocomplex crystallization. Hydroxyl terminated polycaprolactone oligomers were used as a macroinitiator for the ring opening polymerization of d-lactide, resulting in blockcopolymers with plasticizing unit polycaprolactone and compatibilizing poly(d-lactic acid)-blocks. The generated block copolymers were blended with a poly(l-lactic acid)-matrix and formed so called stereocomplex crystals. In comparison to unbound polycaprolactone the polycaprolactone blocks show a lower migration tendency regarding a solution test in toluene. Besides that, trapping the plasticizing units via stereocomplex also improves the efficiency of the plasticizer. In comparison to polymer blends with the same amount of non-bonded polycaprolactone oligomers of the same molecular weight, block copolymers with poly(d-lactic acid) and polycaprolactone can shift the glass transition temperature to lower values. This effect can be explained by the modulated crystallization of the polycaprolactone-blocks trapped into the matrix, so that a higher effective amount can interact with the poly(l-lactic acid)-matrix.
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10
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Investigations on the compatibilization between poly(lactic-co-glycolic acid)/poly(trimethylene carbonate) blends and poly(lactide-co-trimethylene carbonate). Colloid Polym Sci 2020. [DOI: 10.1007/s00396-019-04595-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Zhao X, Hu H, Wang X, Yu X, Zhou W, Peng S. Super tough poly(lactic acid) blends: a comprehensive review. RSC Adv 2020; 10:13316-13368. [PMID: 35492128 PMCID: PMC9051451 DOI: 10.1039/d0ra01801e] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 03/21/2020] [Indexed: 12/18/2022] Open
Abstract
Poly(lactic acid) or poly(lactide) (PLA) is a renewable, bio-based, and biodegradable aliphatic thermoplastic polyester that is considered a promising alternative to petrochemical-derived polymers in a wide range of commodity and engineering applications. However, PLA is inherently brittle, with less than 10% elongation at break and a relatively poor impact strength, which limit its use in some specific areas. Therefore, enhancing the toughness of PLA has been widely explored in academic and industrial fields over the last two decades. This work aims to summarize and organize the current development in super tough PLA fabricated via polymer blending. The miscibility and compatibility of PLA-based blends, and the methods and approaches for compatibilized PLA blends are briefly discussed. Recent advances in PLA modified with various polymers for improving the toughness of PLA are also summarized and elucidated systematically in this review. Various polymers used in toughening PLA are discussed and organized: elastomers, such as petroleum-based traditional polyurethanes (PUs), bio-based elastomers, and biodegradable polyester elastomers; glycidyl ester compatibilizers and their copolymers/elastomers, such as poly(ethylene-co-glycidyl methacrylate) (EGMA), poly(ethylene-n-butylene-acrylate-co-glycidyl methacrylate) (EBA-GMA); rubber; petroleum-based traditional plastics, such as PE and PP; and various biodegradable polymers, such as poly(butylene adipate-co-terephthalate) (PBAT), polycaprolactone (PCL), poly(butylene succinate) (PBS), and natural macromolecules, especially starch. The high tensile toughness and high impact strength of PLA-based blends are briefly outlined, while the super tough PLA-based blends with impact strength exceeding 50 kJ m−2 are elucidated in detail. The toughening strategies and approaches of PLA based super tough blends are summarized and analyzed. The relationship of the properties of PLA-based blends and their morphological parameters, including particle size, interparticle distance, and phase morphologies, are presented. PLA is a renewable, bio-based, and biodegradable aliphatic thermoplastic polyester that is considered a promising alternative to petrochemical-derived polymers in a wide range of commodity and engineering applications.![]()
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Affiliation(s)
- Xipo Zhao
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
| | - Huan Hu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
| | - Xin Wang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
| | - Xiaolei Yu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
| | - Weiyi Zhou
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
| | - Shaoxian Peng
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
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12
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Tu C, Cao X, Zhang RD, Wang DW, Cui L. Effects of posttreatment on the properties of modified PLLA/PDLA fibers. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4460] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chao Tu
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing; Wuhan Textile University; Wuhan China
| | - Xing Cao
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing; Wuhan Textile University; Wuhan China
| | - Run-dong Zhang
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing; Wuhan Textile University; Wuhan China
| | - Da-wei Wang
- Province Key Lab of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering; Wuhan Institute of Technology; Wuhan China
| | - Li Cui
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing; Wuhan Textile University; Wuhan China
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13
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Xu LQ, Zhao YQ. Preparation, Foaming and Characterization of Poly(l-lactic acid))/Poly(d-lactic acid)-Grafted Graphite Oxide Blends. INT POLYM PROC 2018. [DOI: 10.3139/217.3492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Commercial poly(l-lactic acid) (PLLA) was blended with different contents of graphene oxide-graft-poly(d-lactic acid) (GO-g-PDLA), which was synthesized via ring-opening polymerization using modified GO as initiator. PLLA and PLLA/GO-g-PDLA blend foams were prepared in a batch process via varying-temperature mode using supercritical carbon dioxide as physical foaming agent. The results showed that the addition of GO-g-PDLA in PLLA leads to the formation of stereocomplex (sc)-crystallites. Increase in the GO-g-PDLA content enhances the IR absorption, diffraction peak and melting peak corresponding to the sc-crystallites. The addition of GO-g-PDLA to PLLA leads to the decrease of the cell diameter, increase of the cell density and to a little change in expansion ratio, which is attributed to the fact that the enhancement of PLLA crystallization restricts cell growth and GO-g-PDLA acts as nucleation point.
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Affiliation(s)
- L. Q. Xu
- The Key Laboratory of Polymer Processing Engineering of Ministry of Education , South China University of Technology, Guangzhou, Guangdong , PRC
- School of Materials Science and Chemical Engineering , Ningbo University, Ningbo, Zhejiang , PRC
| | - Y. Q. Zhao
- The Key Laboratory of Polymer Processing Engineering of Ministry of Education , South China University of Technology, Guangzhou, Guangdong , PRC
- Ningbo Key Lab of Polymer Materials , Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang , PRC
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14
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Li X, Zhang X, Liu G, Yang Z, Yang B, Qi Y, Wang R, Wang DY. Effect of stereocomplex crystal and flexible segments on the crystallization and tensile behavior of poly(l-lactide). RSC Adv 2018; 8:28453-28460. [PMID: 35542484 PMCID: PMC9083944 DOI: 10.1039/c8ra05355c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 07/30/2018] [Indexed: 12/12/2022] Open
Abstract
Effect of stereocomplex crystal and PEG segments in blends on the crystallization and tensile behavior of PLLA.
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Affiliation(s)
- Xiaolu Li
- Beijing Key Laboratory of Clothing Materials R & D and Assessment
- Beijing Engineering Research Center of Textile Nanofiber
- School of Materials Science & Engineering
- Beijing Institute of Fashion Technology
- Beijing 100029
| | - Xiuqin Zhang
- Beijing Key Laboratory of Clothing Materials R & D and Assessment
- Beijing Engineering Research Center of Textile Nanofiber
- School of Materials Science & Engineering
- Beijing Institute of Fashion Technology
- Beijing 100029
| | - Guoming Liu
- CAS Key Laboratory of Engineering Plastics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Zhongkai Yang
- Beijing Key Laboratory of Clothing Materials R & D and Assessment
- Beijing Engineering Research Center of Textile Nanofiber
- School of Materials Science & Engineering
- Beijing Institute of Fashion Technology
- Beijing 100029
| | - Bo Yang
- Beijing Key Laboratory of Clothing Materials R & D and Assessment
- Beijing Engineering Research Center of Textile Nanofiber
- School of Materials Science & Engineering
- Beijing Institute of Fashion Technology
- Beijing 100029
| | - Yue Qi
- Beijing Key Laboratory of Clothing Materials R & D and Assessment
- Beijing Engineering Research Center of Textile Nanofiber
- School of Materials Science & Engineering
- Beijing Institute of Fashion Technology
- Beijing 100029
| | - Rui Wang
- Beijing Key Laboratory of Clothing Materials R & D and Assessment
- Beijing Engineering Research Center of Textile Nanofiber
- School of Materials Science & Engineering
- Beijing Institute of Fashion Technology
- Beijing 100029
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15
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D'Ambrosio RM, Michell RM, Mincheva R, Hernández R, Mijangos C, Dubois P, Müller AJ. Crystallization and Stereocomplexation of PLA-mb-PBS Multi-Block Copolymers. Polymers (Basel) 2017; 10:polym10010008. [PMID: 30966043 PMCID: PMC6414904 DOI: 10.3390/polym10010008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 12/13/2017] [Accepted: 12/20/2017] [Indexed: 11/16/2022] Open
Abstract
The crystallization and morphology of PLA-mb-PBS copolymers and their corresponding stereocomplexes were studied. The effect of flexible blocks (i.e., polybutylene succinate, PBS) on the crystallization of the copolymers and stereocomplex formation were investigated using polarized light optical microscopy (PLOM), differential scanning calorimetry (DSC), infrared spectroscopy (FTIR), and carbon-13 nuclear magnetic resonance spectroscopy (13C-NMR). The PLA and PBS multiple blocks were miscible in the melt and in the glassy state. When the PLA-mb-PBS copolymers are cooled from the melt, the PLA component crystallizes first creating superstructures, such as spherulites or axialites, which constitute a template within which the PBS component has to crystallize when the sample is further cooled down. The Avrami theory was able to fit the overall crystallization kinetics of both semi-crystalline components, and the n values for both blocks in all the samples had a correspondence with the superstructural morphology observed by PLOM. Solution mixtures of PLLA-mb-PBS and PLDA-mb-PBS copolymers were prepared, as well as copolymer/homopolymer blends with the aim to study the stereocomplexation of PLLA and PDLA chain segments. A lower amount of stereocomplex formation was observed in copolymer mixtures as compared to neat L100/D100 stereocomplexes. The results show that PBS chain segments perturb the formation of stereocomplexes and this perturbation increases with the amount of PBS in the samples. However, when relatively low amounts of PBS in the copolymer blends are present, the rate of stereocomplex formation is enhanced. This effect dissappears when higher amounts of PBS are present. The stereocomplexation was confirmed by FTIR and solid state 13C-NMR analyses.
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Affiliation(s)
- Rosa M D'Ambrosio
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, 1080-A Caracas, Venezuela.
| | - Rose Mary Michell
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, 1080-A Caracas, Venezuela.
| | - Rosica Mincheva
- Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials & Polymers (CIRMAP), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium.
| | - Rebeca Hernández
- Instituto de Ciencia y Tecnología de Polímeros, CSIC, c/Juan de la Cierva 3, 28006 Madrid, Spain.
| | - Carmen Mijangos
- Instituto de Ciencia y Tecnología de Polímeros, CSIC, c/Juan de la Cierva 3, 28006 Madrid, Spain.
| | - Philippe Dubois
- Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials & Polymers (CIRMAP), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium.
| | - Alejandro J Müller
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, 1080-A Caracas, Venezuela.
- Polymat and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain.
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain.
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16
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Li L, Cao ZQ, Bao RY, Xie BH, Yang MB, Yang W. Poly(l-lactic acid)-polyethylene glycol-poly(l-lactic acid) triblock copolymer: A novel macromolecular plasticizer to enhance the crystallization of poly(l-lactic acid). Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.10.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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17
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Cui L, Wang Y, Zhang R, Liu Y. Design high heat-resistant stereocomplex poly(lactide acid) by cross-linking and plasticizing. ADVANCES IN POLYMER TECHNOLOGY 2017. [DOI: 10.1002/adv.21917] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Li Cui
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing; Wuhan Textile University; Wuhan China
| | - Yahui Wang
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing; Wuhan Textile University; Wuhan China
| | - Rundong Zhang
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing; Wuhan Textile University; Wuhan China
| | - Yun Liu
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing; Wuhan Textile University; Wuhan China
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18
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Jing Z, Shi X, Zhang G. Competitive Stereocomplexation and Homocrystallization Behaviors in the Poly(lactide) Blends of PLLA and PDLA-PEG-PDLA with Controlled Block Length. Polymers (Basel) 2017; 9:E107. [PMID: 30970786 PMCID: PMC6432197 DOI: 10.3390/polym9030107] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/09/2017] [Accepted: 03/12/2017] [Indexed: 11/16/2022] Open
Abstract
Stereocomplex poly(lactide) (PLA) was obtained by solution blending of linear PLLA and PDLA-PEG-PDLA. Effects of the L/D ratios, PEG block, and PDLA block on stereocomplexation of the blends are systemically discussed. The full stereocomplex PLA can be acquired by solution blending when L/D ratios are in the range of 7/3⁻5/5. The experiment results demonstrated that the stereocomplex degree of PLLA/PDLA-PEG-PDLA prepared by melt blending was closely related to the PEG block and PDLA block. POM results indicated that the blends with high L/D ratio showed large disordered spherulites, and the typical Maltese cross pattern was observed as the L/D ratios decreased. The results of PEG block on the stereocomplexation of PLLA/PDLA-PEG-PDLA revealed that the PEG blocks possessed two sides: accelerating agent for the mobility of polymer chains and decreasing nucleation capacity due to their diluting effect. The effect of PDLA block on the stereocomplexation of the blends was also well investigated. The results showed that the crystallization of sc-crystallites and hc-crystallites in the PLLA/PDLA-PEG4k-PDLA blends with different PDLA blocks presents an obvious competition relationship, and this is not beneficial to the formation of sc-crystallites with increasing PDLA block. The melting behavior of PLLA/PDLA-PEG4k-PDLA with different PDLA blocks after isothermal crystallization showed that the blends could achieve full stereocomplex when the crystallization temperature exceeded 160 °C, and a crystallite with high perfection could be formed as the crystallization temperature increased. This study systemically investigated the effects of the L/D ratios, PEG block, PDLA block, and crystallization conditions on stereocomplex crystallization of PLLA/PDLA-PEG-PDLA blends, which can provide potential approaches to control the microstructure and physical performances of PLLA/PDLA-PEG-PDLA blends.
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Affiliation(s)
- Zhanxin Jing
- Ministry of Education Key Lab of Applied Physics and Chemistry in Space, College of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Xuetao Shi
- Ministry of Education Key Lab of Applied Physics and Chemistry in Space, College of Science, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Guangcheng Zhang
- Ministry of Education Key Lab of Applied Physics and Chemistry in Space, College of Science, Northwestern Polytechnical University, Xi'an 710072, China.
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Affiliation(s)
- Ming Wang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, P. R. China
| | - Ying Wu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, P. R. China
| | - Yi-Dong Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, P. R. China
| | - Jian-Bing Zeng
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, P. R. China
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Abstract
Upon blending enantiomeric poly(l-lactide) [i.e., poly(l-lactic acid) (PLLA)] and poly(d-lactide) (PDLA) [i.e., poly(d-lactic acid) (PDLA)] or synthesis of stereo block poly(lactide) [i.e., poly(lactic acid) (PLA)], a stereocomplex (SC) is formed. PLA SC has a higher melting temperature (or heat resistance), mechanical performance, and hydrolysis-resistance compared to those of neat PLLA and PDLA. Because of such effects, PLA SC has been extensively studied in terms of biomedical and pharmaceutical applications as well as commodity, industrial, and environmental applications. Stereocomplexation stabilizes and strengthens PLA-based hydrogel or nanoparticles for biomedical applications. Stereocomplexation increases the barrier property of PLA-based materials and thereby prolongs drug release from PLA based materials. In addition, PLA SC is attracting significant attention because it can act as a nucleating agent for the widely used biobased polymer PLLA and thereby the heat resistance of PLLA-based materials can be enhanced. Interestingly, a wide variety of SCs other than PLA SC are found to have been formed in the enantiomeric substituted PLA blends and stereo block substituted PLA polymers. In the present review article, a decade of progress in investigation of PLA SCs is summarized.
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Affiliation(s)
- Hideto Tsuji
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan.
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21
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Li Z, Tan BH, Lin T, He C. Recent advances in stereocomplexation of enantiomeric PLA-based copolymers and applications. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2016.05.003] [Citation(s) in RCA: 190] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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22
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Cui L, Wang Y, Guo Y, Liu Y, Zhao J, Zhang C, Zhu P. Cooperative effects of nucleation agent and plasticizer on crystallization properties of stereocomplex-type poly(lactide acid). POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3795] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Li Cui
- Hubei Biomass Fibers and Eco-dyeing and Finishing Key Laboratory; Wuhan Textile University; Wuhan 430073 China
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies; Wuhan Textile University; Wuhan 430073 China
| | - Yahui Wang
- Hubei Biomass Fibers and Eco-dyeing and Finishing Key Laboratory; Wuhan Textile University; Wuhan 430073 China
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies; Wuhan Textile University; Wuhan 430073 China
| | - Yi Guo
- Hubei Biomass Fibers and Eco-dyeing and Finishing Key Laboratory; Wuhan Textile University; Wuhan 430073 China
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies; Wuhan Textile University; Wuhan 430073 China
| | - Yun Liu
- Hubei Biomass Fibers and Eco-dyeing and Finishing Key Laboratory; Wuhan Textile University; Wuhan 430073 China
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies; Wuhan Textile University; Wuhan 430073 China
| | - Jinchao Zhao
- Hubei Biomass Fibers and Eco-dyeing and Finishing Key Laboratory; Wuhan Textile University; Wuhan 430073 China
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies; Wuhan Textile University; Wuhan 430073 China
| | - Chuanjie Zhang
- Hubei Biomass Fibers and Eco-dyeing and Finishing Key Laboratory; Wuhan Textile University; Wuhan 430073 China
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies; Wuhan Textile University; Wuhan 430073 China
| | - Ping Zhu
- Hubei Biomass Fibers and Eco-dyeing and Finishing Key Laboratory; Wuhan Textile University; Wuhan 430073 China
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies; Wuhan Textile University; Wuhan 430073 China
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23
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Compatibility, mechanical properties and stability of blends of polylactide and polyurethane based on poly(ethylene glycol)-b-polylactide copolymers by chain extension with diisocyanate. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2015.12.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Tsuji H. WITHDRAWN: PLA Stereocomplexes: A Decade of Progress. Adv Drug Deliv Rev 2016:S0169-409X(16)30009-6. [PMID: 26785171 DOI: 10.1016/j.addr.2015.12.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 12/31/2015] [Indexed: 12/16/2022]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
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Affiliation(s)
- Hideto Tsuji
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan.
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25
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Sun B, Liu Y, Zhang B, Bian X, Li G, Chen X. Enhanced toughness and strength of poly (d-lactide) by stereocomplexation with 5-arm poly (l-lactide). J Appl Polym Sci 2015. [DOI: 10.1002/app.42857] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bin Sun
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
- Zhejiang Hisun Biomaterials Co., Ltd; Taizhou Zhejiang 318000 China
- University of Chinese Academy of Sciences; Beijing 100039 China
| | - Yanlong Liu
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
- Zhejiang Hisun Biomaterials Co., Ltd; Taizhou Zhejiang 318000 China
| | - Bao Zhang
- 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
- Zhejiang Hisun Biomaterials Co., Ltd; Taizhou Zhejiang 318000 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
- Zhejiang Hisun Biomaterials Co., Ltd; Taizhou Zhejiang 318000 China
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26
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Tacha S, Saelee T, Khotasen W, Punyodom W, Molloy R, Worajittiphon P, Meepowpan P, Manokruang K. Stereocomplexation of PLL/PDL–PEG–PDL blends: Effects of blend morphology on film toughness. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.06.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Cheng HY, Yang YJ, Li SC, Hong JY, Jang GW. Modification and extrusion coating of polylactic acid films. J Appl Polym Sci 2015. [DOI: 10.1002/app.42472] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Hsiu-Yu Cheng
- Chemical Engineering Division; Material and Chemical Laboratories, Industrial Technology Research Institute; 321 Kuang Fu Road sec. 2 Hsinchu 30011 Taiwan Republic of China
| | - Yin-Ju Yang
- Chemical Engineering Division; Material and Chemical Laboratories, Industrial Technology Research Institute; 321 Kuang Fu Road sec. 2 Hsinchu 30011 Taiwan Republic of China
| | - Shu-Chen Li
- Chemical Engineering Division; Material and Chemical Laboratories, Industrial Technology Research Institute; 321 Kuang Fu Road sec. 2 Hsinchu 30011 Taiwan Republic of China
| | - Jian-Yi Hong
- Chemical Engineering Division; Material and Chemical Laboratories, Industrial Technology Research Institute; 321 Kuang Fu Road sec. 2 Hsinchu 30011 Taiwan Republic of China
| | - Guang-Way Jang
- Chemical Engineering Division; Material and Chemical Laboratories, Industrial Technology Research Institute; 321 Kuang Fu Road sec. 2 Hsinchu 30011 Taiwan Republic of China
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28
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Xie X, Bai W, Wu A, Chen D, Xiong C, Tang C, Pang X. Increasing the compatibility of poly( l-lactide)/poly( para-dioxanone) blends through the addition of poly( para-dioxanone- co- l-lactide). J Appl Polym Sci 2015. [DOI: 10.1002/app.41323] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xulong Xie
- Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041 People's Republic of China
- University of Chinese Academy of Sciences; Beijing 100039 People's Republic of China
| | - Wei Bai
- Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041 People's Republic of China
| | - Ai Wu
- Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041 People's Republic of China
- University of Chinese Academy of Sciences; Beijing 100039 People's Republic of China
| | - Dongliang Chen
- Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041 People's Republic of China
| | - Chengdong Xiong
- Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041 People's Republic of China
| | - Congming Tang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering; China West Normal University; Nanchong 637009 People's Republic of China
| | - Xiubing Pang
- Zhejiang Engineering Research Center in Biodegradable Medical Materials; Dongyang 322100 People's Republic of China
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29
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MacDonald JP, Parker MP, Greenland BW, Hermida-Merino D, Hamley IW, Shaver MP. Tuning thermal properties and microphase separation in aliphatic polyester ABA copolymers. Polym Chem 2015. [DOI: 10.1039/c4py01459f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Four alkyl substituted β-lactones were investigated in ring opening polymerisation to produce a family of poly(3-hydroxyalkanoate)s and their block copolymers.
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Affiliation(s)
| | - M. P. Parker
- School of Chemistry
- Pharmacy and Food Biosciences
- University of Reading
- Berkshire RG6 6AD
- UK
| | - B. W. Greenland
- School of Chemistry
- Pharmacy and Food Biosciences
- University of Reading
- Berkshire RG6 6AD
- UK
| | - D. Hermida-Merino
- DUBBLE @ ESRF – The European Synchrotron
- 38043 Grenoble Cedex 9
- France
| | - I. W. Hamley
- School of Chemistry
- Pharmacy and Food Biosciences
- University of Reading
- Berkshire RG6 6AD
- UK
| | - M. P. Shaver
- School of Chemistry
- University of Edinburgh
- Edinburgh
- UK
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30
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Bao RY, Yang W, Liu ZY, Xie BH, Yang MB. Polymorphism of a high-molecular-weight racemic poly(l-lactide)/poly(d-lactide) blend: effect of melt blending with poly(methyl methacrylate). RSC Adv 2015. [DOI: 10.1039/c5ra00691k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The polymorphic crystallization of a high-molecular-weight PLLA/PDLA blend can be tailored by the amount of PMMA and dynamic and isothermal crystallization conditions.
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Affiliation(s)
- Rui-Ying Bao
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
| | - Wei Yang
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
| | - Zheng-Ying Liu
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
| | - Bang-Hu Xie
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
| | - Ming-Bo Yang
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
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31
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Ning Z, Jiang N, Gan Z. Four-armed PCL-b-PDLA diblock copolymer: 1. Synthesis, crystallization and degradation. Polym Degrad Stab 2014. [DOI: 10.1016/j.polymdegradstab.2014.05.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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32
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Maintaining Structural Stability of Poly(lactic acid): Effects of Multifunctional Epoxy based Reactive Oligomers. Polymers (Basel) 2014. [DOI: 10.3390/polym6041232] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Rathi SR, Ng D, Coughlin EB, Hsu SL, Golub CS, Ling GH, Tzivanis MJ. Effects of Molecular Architecture on the Stereocomplex Crystallization in Poly(lactic acid) Blends. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300589] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sahas R. Rathi
- Polymer Science and Engineering; University of Massachusetts; Amherst MA 01003 USA
| | - David Ng
- Polymer Science and Engineering; University of Massachusetts; Amherst MA 01003 USA
| | - E. Bryan Coughlin
- Polymer Science and Engineering; University of Massachusetts; Amherst MA 01003 USA
| | - Shaw Ling Hsu
- Polymer Science and Engineering; University of Massachusetts; Amherst MA 01003 USA
| | - Charles S. Golub
- Saint Gobain Northborough Research & Development Center; 9 Goddard Road Northborough MA 01532 USA
| | - Gerald H. Ling
- Saint Gobain Northborough Research & Development Center; 9 Goddard Road Northborough MA 01532 USA
| | - Michael J. Tzivanis
- Saint Gobain Northborough Research & Development Center; 9 Goddard Road Northborough MA 01532 USA
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35
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Feng L, Bian X, Chen Z, Li G, Chen X. Mechanical, aging, optical and rheological properties of toughening polylactide by melt blending with poly(ethylene glycol) based copolymers. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2013.06.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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36
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Kutikov AB, Song J. An amphiphilic degradable polymer/hydroxyapatite composite with enhanced handling characteristics promotes osteogenic gene expression in bone marrow stromal cells. Acta Biomater 2013; 9:8354-64. [PMID: 23791675 PMCID: PMC3745304 DOI: 10.1016/j.actbio.2013.06.013] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 05/31/2013] [Accepted: 06/10/2013] [Indexed: 01/13/2023]
Abstract
Electrospun polymer/hydroxyapatite (HA) composites combining biodegradability with osteoconductivity are attractive for skeletal tissue engineering applications. However, most biodegradable polymers such as poly(lactic acid) (PLA) are hydrophobic and do not blend with adequate interfacial adhesion with HA, compromising the structural homogeneity, mechanical integrity and biological performance of the composite. To overcome this challenge, we combined a hydrophilic polyethylene glycol (PEG) block with poly(d,l-lactic acid) to improve the adhesion of the degradable polymer with HA. The amphiphilic triblock copolymer PLA-PEG-PLA (PELA) improved the stability of HA-PELA suspension at 25wt.% HA content, which was readily electrospun into HA-PELA composite scaffolds with uniform fiber dimensions. HA-PELA was highly extensible (failure strain>200% vs. <40% for HA-PLA), superhydrophilic (∼0° water contact angle vs. >100° for HA-PLA), and exhibited an 8-fold storage modulus increase (unlike deterioration for HA-PLA) upon hydration, owing to the favorable interaction between HA and PEG. HA-PELA also better promoted osteochondral lineage commitment of bone marrow stromal cells in unstimulated culture and supported far more potent osteogenic gene expression upon induction than HA-PLA. We demonstrate that the chemical incorporation of PEG is an effective strategy to improve the performance of degradable polymer/HA composites for bone tissue engineering applications.
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Affiliation(s)
- Artem B. Kutikov
- Department of Orthopedics & Physical Rehabilitation, Department of Cell and Developmental Biology. University of Massachusetts Medical School, 55 Lake Ave North, Worcester, MA 01655, USA
| | - Jie Song
- Department of Orthopedics & Physical Rehabilitation, Department of Cell and Developmental Biology. University of Massachusetts Medical School, 55 Lake Ave North, Worcester, MA 01655, USA
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Geschwind J, Rathi S, Tonhauser C, Schömer M, Hsu SL, Coughlin EB, Frey H. Stereocomplex Formation in Polylactide Multiarm Stars and Comb Copolymers with Linear and Hyperbranched Multifunctional PEG. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300074] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Bao RY, Yang W, Jiang WR, Liu ZY, Xie BH, Yang MB. Polymorphism of Racemic Poly(l-lactide)/Poly(d-lactide) Blend: Effect of Melt and Cold Crystallization. J Phys Chem B 2013; 117:3667-74. [DOI: 10.1021/jp311878f] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Rui-Ying Bao
- College of Polymer Science and Engineering, Sichuan University, State Key Laboratory of Polymer
Materials Engineering, Chengdu, 610065, Sichuan, China
| | - Wei Yang
- College of Polymer Science and Engineering, Sichuan University, State Key Laboratory of Polymer
Materials Engineering, Chengdu, 610065, Sichuan, China
| | - Wen-Rou Jiang
- College of Polymer Science and Engineering, Sichuan University, State Key Laboratory of Polymer
Materials Engineering, Chengdu, 610065, Sichuan, China
| | - Zheng-Ying Liu
- College of Polymer Science and Engineering, Sichuan University, State Key Laboratory of Polymer
Materials Engineering, Chengdu, 610065, Sichuan, China
| | - Bang-Hu Xie
- College of Polymer Science and Engineering, Sichuan University, State Key Laboratory of Polymer
Materials Engineering, Chengdu, 610065, Sichuan, China
| | - Ming-Bo Yang
- College of Polymer Science and Engineering, Sichuan University, State Key Laboratory of Polymer
Materials Engineering, Chengdu, 610065, Sichuan, China
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39
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Feng L, Bian X, Cui Y, Chen Z, Li G, Chen X. Flexibility Improvement of Poly(L
-lactide) by Reactive Blending With Poly(ether urethane) Containing Poly(ethylene glycol) Blocks. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201200696] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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40
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