1
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Bexis P, Husband JT, Sardon H, Coulembier O, Dove AP. Stereocomplexed Functional and Statistical Poly(lactide-carbonate)s via a Simple Organocatalytic System. Macromolecules 2024; 57:2287-2294. [PMID: 38495388 PMCID: PMC10938874 DOI: 10.1021/acs.macromol.3c02485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/09/2024] [Accepted: 02/19/2024] [Indexed: 03/19/2024]
Abstract
The stereocomplexation of polylactide (PLA) has been widely relied upon to develop degradable, sustainable materials with increased strength and improved material properties in comparison to stereopure PLA. However, forming functionalized copolymers of PLA while retaining high crystallinity remains elusive. Herein, the controlled ring-opening copolymerization (ROCOP) of lactide (LA) and functionalized cyclic carbonate monomers is undertaken. The produced polymers are shown to remain crystalline up to 25 mol % carbonate content and are efficiently stereocomplexed with homopolymer PLA and copolymers of opposite chirality. Polymers with alkene and alkyne pendent handles are shown to undergo efficient derivatization with thiol-ene click chemistry, which would allow both the covalent conjugation of therapeutic moieties and tuning of material properties.
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Affiliation(s)
- Panagiotis Bexis
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - Jonathan T. Husband
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - Haritz Sardon
- POLYMAT, University of the Basque Country
UPV/EHU, Joxe Mari
Korta Center, Avda. Tolosa
72, 20018 Donostia-San
Sebastian, Spain
| | - Olivier Coulembier
- Center
of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory
of Polymeric and Composite Materials, University
of Mons, Mons B-7000, Belgium
| | - Andrew P. Dove
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
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2
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Shakoor Shar A, Wang N, Chen T, Zhao X, Weng Y. Development of PLA/Lignin Bio-Composites Compatibilized by Ethylene Glycol Diglycidyl Ether and Poly (ethylene glycol) Diglycidyl Ether. Polymers (Basel) 2023; 15:4049. [PMID: 37896293 PMCID: PMC10610451 DOI: 10.3390/polym15204049] [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: 09/09/2023] [Revised: 09/17/2023] [Accepted: 09/19/2023] [Indexed: 10/29/2023] Open
Abstract
Poly (lactic acid) (PLA) is a promising green substitute for conventional petroleum-based plastics in a variety of applications. However, the wide application of PLA is still limited by its disadvantages, such as slow crystallization rate, inadequate gas barrier, thermal degradation, etc. In this study, lignin (1, 3, 5 PHR) was incorporated into PLA to improve the thermal, mechanical, and barrier properties of PLA. Two low-viscosity epoxy resins, ethylene glycol diglycidyl ether (EGDE) and poly (ethylene glycol) diglycidyl ether (PEGDE), were used as compatibilizers to enhance the performance of the composites. The addition of lignin improved the onset degradation temperature of PLA by up to 15 °C, increased PLA crystallinity, improved PLA tensile strength by approximately 15%, and improved PLA oxygen barrier by up to 58.3%. The addition of EGDE and PEGDE both decreased the glass transition, crystallization, and melting temperatures of the PLA/lignin composites, suggesting their compatabilizing and plasticizing effects, which contributed to improved oxygen barrier properties of the PLA/lignin composites. The developed PLA/lignin composites with improved thermal, mechanical, and gas barrier properties can potentially be used for green packaging applications.
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Affiliation(s)
- Abdul Shakoor Shar
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China; (A.S.S.); (N.W.); (T.C.)
| | - Ningning Wang
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China; (A.S.S.); (N.W.); (T.C.)
| | - Tianyu Chen
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China; (A.S.S.); (N.W.); (T.C.)
| | - Xiaoying Zhao
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China; (A.S.S.); (N.W.); (T.C.)
| | - Yunxuan Weng
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China; (A.S.S.); (N.W.); (T.C.)
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing 100048, China
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3
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Enhanced Crystallization Rate of Poly(L-lactide)/Hydroxyapatite-graft-poly(D-lactide) Composite with Different Processing Temperatures. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-020-2374-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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4
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Mechanical properties and heat resistance of stereocomplex polylactide/copolyester blend films prepared by in situ melt blending followed with compression molding. Heliyon 2018; 4:e01082. [PMID: 30603714 PMCID: PMC6307044 DOI: 10.1016/j.heliyon.2018.e01082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 10/26/2018] [Accepted: 12/18/2018] [Indexed: 11/26/2022] Open
Abstract
This work focuses on the process to obtain high heat-resistant stereocomplex polylactide (scPLA)/copolyester blend films by in situ melt blending of high molecular-weight poly(L-lactide) (PLLA), low molecular-weight poly(D-lactide) (PDLA) and copolyester followed with compression molding. A copolyester of poly(ε-caprolactone-co-L-lactide) was used as a film former. Stereocomplexation, mechanical properties and heat resistance of the scPLA/copolyester blend films were investigated by differential scanning calorimetry (DSC), tensile testing and dynamic mechanical analysis (DMA), respectively. The PDLA fractions enhanced stereocomplexation and heat resistance of the blend films while the copolyester fraction reduced film brittleness. Dimensional stability to heat of blend films was also determined and was accorded to their DMA results. It was concluded that the high heat-resistant and less brittle scPLA films could be prepared using 70/30 (w/w) PLLA/PDLA with 20 wt% copolyester through melt blending before compression molding. This film showed similar stress at break and heat resistance to those of polypropylene film but with lower strain at break.
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5
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Baimark Y, Kittipoom S. Influence of Chain-Extension Reaction on Stereocomplexation, Mechanical Properties and Heat Resistance of Compressed Stereocomplex-Polylactide Bioplastic Films. Polymers (Basel) 2018; 10:E1218. [PMID: 30961143 PMCID: PMC6290629 DOI: 10.3390/polym10111218] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 10/31/2018] [Accepted: 10/31/2018] [Indexed: 12/02/2022] Open
Abstract
Stereocomplex polylactide (scPLA) films were prepared by melt blending of poly(l-lactide) (PLLA) and poly(d-lactide) (PDLA) with and without an epoxy-based chain extender before compression molding. The obtained scPLA films were characterized through differential scanning calorimetry, X-ray diffractometry (XRD), tensile testing and dimensional stability to heat. XRD patterns revealed that all the scPLA films had only stereocomplex crystallites. The obtained results showed that the chain-extension reaction improved mechanical properties of the scPLA films, however, it suppressed stereocomplexation and heat resistance.
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Affiliation(s)
- Yodthong Baimark
- Biodegradable Polymers Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand.
| | - Sumet Kittipoom
- Faculty of Science, Mahidol University, 272 Rama VI Road, Ratchathewi, Bangkok 10400, Thailand.
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6
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Srisuwan Y, Baimark Y. Controlling stereocomplexation, heat resistance and mechanical properties of stereocomplex polylactide films by using mixtures of low and high molecular weight poly(D-lactide)s. E-POLYMERS 2018. [DOI: 10.1515/epoly-2018-0115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractStereocomplex polylactide (scPLA) films were prepared by blending poly(L-lactide) (PLLA) and poly(D-lactide) (PDLA) solutions before solvent evaporation. The PLLA/PDLA ratios were 80/20 and 60/40 (w/w). PDLAs with low and high molecular weights (M.W.) were used as PDLA mixtures. The scPLA films with different low/high M.W. PDLA ratios were investigated for both the 80/20 and 60/40 (w/w) scPLA film series. Stereocomplexation, heat resistance and the mechanical properties of the scPLA films were studied by differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and tensile testing, respectively. The results indicated that low M.W. PDLA can enhance the stereocomplexation and heat resistance of scPLA films while the high M.W. PDLA can improve tensile properties of scPLA films. It was concluded that the stereocomplexation, heat resistance and tensile properties of scPLA films could be controlled by adjusting the low/high M.W. PDLA ratio in PDLA fraction.
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Affiliation(s)
- Yaowalak Srisuwan
- Biodegradable Polymers Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand
| | - Yodthong Baimark
- Biodegradable Polymers Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand
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7
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Luo C, Yang M, Xiao W, Yang J, Wang Y, Chen W, Han X. Relationship between the crystallization behavior of poly(ethylene glycol) and stereocomplex crystallization of poly(L-lactic acid)/poly(D-lactic acid). POLYM INT 2018. [DOI: 10.1002/pi.5506] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Chunyan Luo
- School of Materials and Chemical Engineering; Xi'an Technological University; Xi'an China
| | - Minrui Yang
- School of Materials and Chemical Engineering; Xi'an Technological University; Xi'an China
| | - Wei Xiao
- School of Materials and Chemical Engineering; Xi'an Technological University; Xi'an China
| | - Jingjing Yang
- School of Materials and Chemical Engineering; Xi'an Technological University; Xi'an China
| | - Yan Wang
- School of Materials and Chemical Engineering; Xi'an Technological University; Xi'an China
| | - Weixing Chen
- School of Materials and Chemical Engineering; Xi'an Technological University; Xi'an China
| | - Xia Han
- Key Laboratory for Advanced Material and School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai China
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8
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Combined effect of nucleating agent and plasticizer on the crystallization behaviour of polylactide. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-1989-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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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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10
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Zhang ZC, Gao XR, Hu ZJ, Yan Z, Xu JZ, Xu L, Zhong GJ, Li ZM. Inducing Stereocomplex Crystals by Template Effect of Residual Stereocomplex Crystals during Thermal Annealing of Injection-Molded Polylactide. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02169] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zheng-Chi Zhang
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xin-Rui Gao
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Zhong-Jie Hu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Zheng Yan
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jia-Zhuang Xu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Ling Xu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Gan-Ji Zhong
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Zhong-Ming Li
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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11
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Role of carbon nanotube grafted poly(l-lactide)-block-poly(d-lactide) in the crystallization of poly(l-lactic acid)/poly(d-lactic acid) blends: Suppressed homocrystallization and enhanced stereocomplex crystallization. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.08.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Jing Z, Shi X, Zhang G. Rheology and crystallization behavior of asymmetric PLLA/PDLA blends based on linear PLLA and PDLA with different structures. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3841] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhanxin Jing
- MOE Key Lab of Applied Physics and Chemistry in Space, School of Science; Northwestern Polytechnical University; Xi'an 710072 China
| | - Xuetao Shi
- MOE Key Lab of Applied Physics and Chemistry in Space, School of Science; Northwestern Polytechnical University; Xi'an 710072 China
| | - Guangcheng Zhang
- MOE Key Lab of Applied Physics and Chemistry in Space, School of Science; Northwestern Polytechnical University; Xi'an 710072 China
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13
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The effect of the grafted chains on the crystallization of PLLA/PLLA-grafted SiO2 nanocomposites. Colloid Polym Sci 2016. [DOI: 10.1007/s00396-016-3830-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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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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15
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Yin Y, Song Y, Xiong Z, Zhang X, de Vos S, Wang R, Joziasse CAP, Liu G, Wang D. Effect of the melting temperature on the crystallization behavior of a poly(l-lactide)/poly(d-lactide) equimolar mixture. J Appl Polym Sci 2015. [DOI: 10.1002/app.43015] [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)
- Yongai Yin
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Yan Song
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Zujiang Xiong
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Xiuqin Zhang
- School of Materials Science and Engineering; Beijing Institute of Fashion Technology; Beijing 100029 China
| | - Sicco de Vos
- Corbion Purac; P.O. Box 21 4200AA Gorinchem The Netherlands
| | - Ruyin Wang
- Corbion Purac China; Unit 08-09, 30F, 6088 Humin Road, Minhang District Shanghai 201100 China
| | | | - Guoming Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
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16
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Torres L, McMahan C, Ramadan L, Holtman KM, Tonoli GHD, Flynn A, Orts WJ. Effect of multi-branched PDLA additives on the mechanical and thermomechanical properties of blends with PLLA. J Appl Polym Sci 2015. [DOI: 10.1002/app.42858] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
| | - Colleen McMahan
- ARS US Department of Agriculture; Bioproducts Research Unit, WRRC; Albany California 94710
| | - Lucas Ramadan
- ARS US Department of Agriculture; Bioproducts Research Unit, WRRC; Albany California 94710
| | - Kevin M. Holtman
- ARS US Department of Agriculture; Bioproducts Research Unit, WRRC; Albany California 94710
| | - Gustavo H. D. Tonoli
- ARS US Department of Agriculture; Bioproducts Research Unit, WRRC; Albany California 94710
- Department of Forest Science (DCF); Universidade Federal De Lavras; C.P. 3037 Lavras MG 37200-000 Brazil
| | | | - William J. Orts
- ARS US Department of Agriculture; Bioproducts Research Unit, WRRC; Albany California 94710
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17
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Tsuji H, Tajima T. Non-isothermal crystallization behavior of stereo diblock polylactides with relatively short poly(d-lactide) segments from the melt. POLYM INT 2014. [DOI: 10.1002/pi.4806] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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
| | - Tomohiko Tajima
- 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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18
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19
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Fox DM, Novy M, Brown K, Zammarano M, Harris RH, Murariu M, McCarthy ED, Seppala JE, Gilman JW. Flame retarded poly(lactic acid) using POSS-modified cellulose. 2. Effects of intumescing flame retardant formulations on polymer degradation and composite physical properties. Polym Degrad Stab 2014. [DOI: 10.1016/j.polymdegradstab.2014.01.007] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Dong J, Wang B, Xiong Z, Bai W, Xiong C. The formation of stereocomplex in asymmetric blends of PLLGA and PDLA and the effect of stereocomplex on PLLGA crystallization. CRYSTAL RESEARCH AND TECHNOLOGY 2014. [DOI: 10.1002/crat.201400113] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jun Dong
- Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu Sichuan 610041 P. R. China
| | - Bing Wang
- Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu Sichuan 610041 P. R. China
| | - Zuochun Xiong
- Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu Sichuan 610041 P. R. China
| | - Wei Bai
- Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu Sichuan 610041 P. R. China
| | - Chengdong Xiong
- Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu Sichuan 610041 P. R. China
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21
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Wei XF, Bao RY, Cao ZQ, Yang W, Xie BH, Yang MB. Stereocomplex Crystallite Network in Asymmetric PLLA/PDLA Blends: Formation, Structure, and Confining Effect on the Crystallization Rate of Homocrystallites. Macromolecules 2014. [DOI: 10.1021/ma402653a] [Citation(s) in RCA: 227] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Xin-Feng Wei
- State Key Laboratory of Polymer
Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Rui-Ying Bao
- State Key Laboratory of Polymer
Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Zhi-Qiang Cao
- State Key Laboratory of Polymer
Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Wei Yang
- State Key Laboratory of Polymer
Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Bang-Hu Xie
- State Key Laboratory of Polymer
Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Ming-Bo Yang
- State Key Laboratory of Polymer
Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
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22
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Wei XF, Bao RY, Gu L, Wang Y, Ke K, Yang W, Xie BH, Yang MB, Zhou T, Zhang AM. Synergistic effect of stereocomplex crystals and shear flow on the crystallization rate of poly(l-lactic acid): A rheological study. RSC Adv 2014. [DOI: 10.1039/c3ra45402a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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