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Ma F, Jiang C, Xie W, Wu D. Effect of chitin nanocrystals on stereocomplexation of poly( -lactide)/poly( -lactide) blends. Int J Biol Macromol 2023; 239:124372. [PMID: 37030462 DOI: 10.1016/j.ijbiomac.2023.124372] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/08/2023] [Accepted: 04/04/2023] [Indexed: 04/08/2023]
Abstract
Using polysaccharide nanocrystals such as chitin nanocrystals (ChNCs) as nanofiller for biodegradable aliphatic polymers is an attractive way of developing all-degradable nanocomposites. Crystallization study is vital for well regulating final performance of these type polymeric nanocomposites. In this work, ChNCs were incorporated with the poly(l-lactide)/poly(d-lactide) blends and as-obtained nanocomposites were used as target samples for the study. The results showed that ChNCs acted as nucleating agent, promoting the formation of stereocomplex (SC) crystallites and accelerating overall crystallization kinetics as a result. Therefore, the nanocomposites possessed higher SC crystallization temperatures and lower apparent activation energy as compared to the blend. However, the formation of homocrystallites (HC) was dominated by nucleation effect of SC crystallites and accordingly, the fraction of SC crystallites reduced more or less in the presence of ChNCs, despite the nanocomposites possessed higher rate of HC crystallization. This study also provided valuable information on accessing more applications of ChNCs to be used as SC nucleator for polylactide.
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Affiliation(s)
- Fen Ma
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China
| | - Chenguang Jiang
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China
| | - Wenyuan Xie
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China; Institute for Innovative Materials & Energy, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China
| | - Defeng Wu
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China; Provincial Key Laboratories of Environmental Materials & Engineering, Yangzhou, Jiangsu Province 225002, PR China.
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2
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Critical Review on Polylactic Acid: Properties, Structure, Processing, Biocomposites, and Nanocomposites. MATERIALS 2022; 15:ma15124312. [PMID: 35744371 PMCID: PMC9228835 DOI: 10.3390/ma15124312] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/20/2022] [Accepted: 05/26/2022] [Indexed: 12/20/2022]
Abstract
Composite materials are emerging as a vital entity for the sustainable development of both humans and the environment. Polylactic acid (PLA) has been recognized as a potential polymer candidate with attractive characteristics for applications in both the engineering and medical sectors. Hence, the present article throws lights on the essential physical and mechanical properties of PLA that can be beneficial for the development of composites, biocomposites, films, porous gels, and so on. The article discusses various processes that can be utilized in the fabrication of PLA-based composites. In a later section, we have a detailed discourse on the various composites and nanocomposites-based PLA along with the properties’ comparisons, discussing our investigation on the effects of various fibers, fillers, and nanofillers on the mechanical, thermal, and wear properties of PLA. Lastly, the various applications in which PLA is used extensively are discussed in detail.
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3
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Guo N, Zhao M, Li S, Hao J, Wu Z, Zhang C. Stereocomplexation Reinforced High Strength Poly(L-lactide)/Nanohydroxyapatite Composites for Potential Bone Repair Applications. Polymers (Basel) 2022; 14:645. [PMID: 35160634 PMCID: PMC8915188 DOI: 10.3390/polym14030645] [Citation(s) in RCA: 2] [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: 01/09/2022] [Revised: 02/03/2022] [Accepted: 02/05/2022] [Indexed: 02/01/2023] Open
Abstract
Composite materials composed of polylactide (PLA) and nano-hydroxyapatite (n-HA) have been recognized as excellent candidate material in bone repai The difference in hydrophilicity/hydrophobicity and poor interfacial compatibility between n-HA filler and PLA matrix leads to non-uniform dispersion of n-HA in PLA matrix and consequent poor reinforcement effect. In this study, an HA/PLA nanocomposite was designed based on the surface modification of n-HA with poly(D-lactide) (PDLA), which not only can improve the dispersion of n-HA in the poly(L-lactide) (PLLA) matrix but also could form a stereocomplex crystal with the matrix PLLA at the interface and ultimately lead to greatly enhanced mechanical performance The n-HA/PLA composites were characterized by means of scanning electron microscopy, Fourier transform infrared spectroscopy, X-Ray diffraction, thermal gravity analysis, differential scanning calorimetry, and a mechanical test; in vitro cytotoxicity of the composite material as well as its efficacy in inducing osteogenic differentiation of rat bone marrow stromal cells (rMSCs) were also evaluated. Compared with those of neat PLLA, the tensile strength, Young's modulus, interfacial shear strength, elongation at break and crystallinity of the composites increased by 34%, 53%, 26%, 70%, and 17%, respectively. The adhesion and proliferation as well as the osteogenic differentiation of rMSCs on HA/PLA composites were clearly evidenced. Therefore, the HA/PLA composites have great potential for bone repai.
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Affiliation(s)
| | | | | | | | - Zhaoying Wu
- School of Biomedical Engineering, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (N.G.); (M.Z.); (S.L.); (J.H.)
| | - Chao Zhang
- School of Biomedical Engineering, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (N.G.); (M.Z.); (S.L.); (J.H.)
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Venkatesh C, Chen Y, Cao Z, Brennan S, Major I, Lyons JG, Devine DM. Influence of extrusion screw speed on the properties of halloysite nanotube impregnated polylactic acid nanocomposites. JOURNAL OF POLYMER ENGINEERING 2021. [DOI: 10.1515/polyeng-2020-0228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Abstract
Poly (lactic acid)/halloysite nanotube (PLA/HNT) nanocomposites have been studied extensively over the past few years owing to the interesting properties of the polymer, PLA, and the nanoclay, HNT, individually and as composites. In this paper, the influence of the screw speed during extrusion was investigated and was found to have a significant impact on the mechanical and thermal performance of the extruded PLA/HNT nanocomposites. To determine the effect of screw speed on PLA/HNT nanocomposites, 5 and 10 wt% of HNTs were blended into the PLA matrix through compounding at screw speeds of 40, 80, and 140 rpm. Virgin PLA was compounded for comparison. The resultant polymer melt was quench cooled onto a calendar system to produce composite films which were assessed for mechanical, thermal, chemical, and surface properties. Results illustrate that in comparison to 40 and 80 rpm, the virgin PLA when compounded at 140 rpm, indicated a significant increase in the mechanical properties. The PLA/HNT 5 wt% nanocomposite compounded at 140 rpm showed significant improvement in the dispersion of HNTs in the PLA matrix which in turn enhanced the mechanical and thermal properties. This can be attributed to the increased melt shear at higher screw speeds.
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Affiliation(s)
- Chaitra Venkatesh
- Materials Research Institute, Athlone Institute of Technology , Dublin Road , Athlone , Co. Westmeath , Ireland
| | - Yuanyuan Chen
- Materials Research Institute, Athlone Institute of Technology , Dublin Road , Athlone , Co. Westmeath , Ireland
| | - Zhi Cao
- Materials Research Institute, Athlone Institute of Technology , Dublin Road , Athlone , Co. Westmeath , Ireland
| | - Shane Brennan
- Materials Research Institute, Athlone Institute of Technology , Dublin Road , Athlone , Co. Westmeath , Ireland
| | - Ian Major
- Materials Research Institute, Athlone Institute of Technology , Dublin Road , Athlone , Co. Westmeath , Ireland
| | - John G. Lyons
- Faculty of Engineering and Informatics , Athlone Institute of Technology , Dublin Road , Athlone , Co. Westmeath , Ireland
| | - Declan M. Devine
- Materials Research Institute, Athlone Institute of Technology , Dublin Road , Athlone , Co. Westmeath , Ireland
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5
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Li Y, Zhao L, Han C, Xiao L. Thermal and mechanical properties of stereocomplex polylactide enhanced by nanosilica. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-021-04839-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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6
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Zhao Y, Wei B, Wu M, Zhang H, Yao J, Chen X, Shao Z. Preparation and characterization of antibacterial poly(lactic acid) nanocomposites with N-halamine modified silica. Int J Biol Macromol 2020; 155:1468-1477. [DOI: 10.1016/j.ijbiomac.2019.11.125] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 11/13/2019] [Accepted: 11/13/2019] [Indexed: 10/25/2022]
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7
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Biodegradable blends of poly(butylene adipate-co-terephthalate) and stereocomplex polylactide with enhanced rheological, mechanical properties and thermal resistance. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04636-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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8
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The Role of Multiwalled Carbon Nanotubes in the Mechanical, Thermal, Rheological, and Electrical Properties of PP/PLA/MWCNTs Nanocomposites. JOURNAL OF COMPOSITES SCIENCE 2019. [DOI: 10.3390/jcs3030064] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Polypropylene/polylactic acid (PP/PLA) blend (10–40% of PLA) and PP/PLA/MWCNTs nanocomposites (0.5, 1, and 2 wt% of MWCNTs) were prepared via melt compounding. Scanning electron microscopy revealed a co-continuous PLA phase in the PP/PLA blends with high PLA content. Moreover, the addition of 2 wt% multi-walled carbon nanotubes (MWCNTs) increased the tensile modulus and tensile strength of the PP/PLA40% by 60% and 95%, respectively. A conductive network was found with the addition of 2 wt% MWCNTs, where the electrical conductivity of the PP/PLA increased by nine orders of magnitude. At 2 wt% MWCNTs, a solid network within the composite was characterized by rheological assessment, where the composite turned from nonterminal to terminal behavior. Soil burial testing of the PP/PLA blend within 30 days in natural humus compost soil featured suitable biodegradation, which indicates the PP/PLA blend is as an appropriate candidate for food packing applications.
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Poly(L-lactide) nanocomposites containing poly(D-lactide) grafted nanohydroxyapatite with improved interfacial adhesion via stereocomplexation. J Mech Behav Biomed Mater 2018; 78:10-19. [DOI: 10.1016/j.jmbbm.2017.10.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 10/24/2017] [Accepted: 10/30/2017] [Indexed: 01/27/2023]
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10
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Basu A, Nazarkovsky M, Ghadi R, Khan W, Domb AJ. Poly(lactic acid)-based nanocomposites. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3985] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Arijit Basu
- School of Pharmacy, Faculty of Medicine; The Hebrew University of Jerusalem; Jerusalem 91120 Israel
| | - Michael Nazarkovsky
- School of Pharmacy, Faculty of Medicine; The Hebrew University of Jerusalem; Jerusalem 91120 Israel
| | - Rohan Ghadi
- Department of Pharmaceutics; National Institute of Pharmaceutical Education and Research (NIPER); Hyderabad 500037 India
| | - Wahid Khan
- Department of Pharmaceutics; National Institute of Pharmaceutical Education and Research (NIPER); Hyderabad 500037 India
| | - Abraham J. Domb
- School of Pharmacy, Faculty of Medicine; The Hebrew University of Jerusalem; Jerusalem 91120 Israel
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11
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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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12
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Montesanto S, Brucato V, La Carrubba V. Evaluation of mechanical and morphologic features of PLLA membranes as supports for perfusion cells culture systems. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 69:841-9. [PMID: 27612778 DOI: 10.1016/j.msec.2016.07.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 04/12/2016] [Accepted: 07/13/2016] [Indexed: 11/24/2022]
Abstract
Porous biodegradable PLLA membranes, which can be used as supports for perfusion cell culture systems were designed, developed and characterized. PLLA membranes were prepared via diffusion induced phase separation (DIPS). A glass slab was coated with a binary PLLA-dioxane solution (8wt.% PLLA) via dip coating, then pool immersed in two subsequent coagulation baths, and finally dried in a humidity-controlled environment. Surface and mechanical properties were evaluated by measuring pore size, porosity via scanning electron microscopy, storage modulus, loss modulus and loss angle by using a dynamic mechanical analysis (DMA). Cell adhesion assays on different membrane surfaces were also performed by using a standard count method. Results provide new insights into the foaming methods for producing polymeric membranes and supply indications on how to optimise the fabrication parameters to design membranes for tissue cultures and regeneration.
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Affiliation(s)
- S Montesanto
- Department of Civil, Environmental, Aerospace, Materials Engineering (DICAM), University of Palermo, Viale delle Scienze Ed. 8, 90128 Palermo, Italy.
| | - V Brucato
- Department of Civil, Environmental, Aerospace, Materials Engineering (DICAM), University of Palermo, Viale delle Scienze Ed. 8, 90128 Palermo, Italy
| | - V La Carrubba
- Department of Civil, Environmental, Aerospace, Materials Engineering (DICAM), University of Palermo, Viale delle Scienze Ed. 8, 90128 Palermo, Italy; Euro-Mediterranean Institute of Science and Technology (IEMEST), Via Michele Miraglia, 20, 90128 Palermo, Italy
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13
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Karami S, Lafleur PG. Toughening of polylactide nanocomposites with an ethylene alkyl acrylate copolymer: Effects of the addition of nanoparticles on phase morphology and fracture mechanisms. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24377] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Shahir Karami
- Chemical Engineering Department; CREPEC, École Polytechnique de Montréal; C.P. 6079, Succ. Centre ville Montréal Québec Canada H3C 3A7
| | - Pierre G. Lafleur
- Chemical Engineering Department; CREPEC, École Polytechnique de Montréal; C.P. 6079, Succ. Centre ville Montréal Québec Canada H3C 3A7
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14
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Lamellae Evolution of Stereocomplex-Type Poly(Lactic Acid)/Organically-Modified Layered Zinc Phenylphosphonate Nanocomposites Induced by Isothermal Crystallization. MATERIALS 2016; 9:ma9030159. [PMID: 28773284 PMCID: PMC5456693 DOI: 10.3390/ma9030159] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Revised: 02/19/2016] [Accepted: 02/29/2016] [Indexed: 11/16/2022]
Abstract
Stereocomplex-type poly(lactic acid) (SC-PLA)/oleylamine-modified layered zinc phenylphosphonate (SC-PLA/m-PPZn) nanocomposites are successfully fabricated using a solution mixing process. Wide-angle X-ray diffraction (WAXD) analysis reveals that the structural arrangement of the oleylamine-modified PPZn exhibits a large interlayer spacing of 30.3 Å. In addition, we investigate the temperature effect on the real-time structural arrangement of PPZn and m-PPZn. The results indicated that the lattice expansion of m-PPZn with increasing temperature leads to an increase in the interlayer spacing from 30.3 to 37.1 Å as the temperature increases from 30 to 150 °C. The interlayer spacing decreases slightly as the temperature further increases to 210 °C. This behavior might be attributed to interlayer oleylamine elimination, which results in hydrogen bonding destruction between the hydroxide sheets and water molecules. As the temperature reaches 240 °C, the in situ WAXD patterns show the coexistence of m-PPZn and PPZn. However, the layered structures of m-PPZn at 300 °C are almost the same as those of PPZn, after the complete degradation temperature of oleylamine. The morphology of the SC-PLA/m-PPZn nanocomposites characterized using WAXD and transmission electron microscopy (TEM) demonstrates that most partial delamination layered materials are randomly dispersed in the SC-PLA matrix. Small-angle X-ray scattering reveals that higher crystal layer thickness and lower surface free energy is achieved in 0.25 wt% SC-PLA/m-PPZn nanocomposites. These results indicate that the introduction of 0.25 wt% m-PPZn into SC-PLA reduces the surface free energy, thereby increasing the polymer chain mobility.
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15
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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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16
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Samthong C, Deetuam C, Yamaguchi M, Praserthdam P, Somwangthanaroj A. Effects of size and shape of dispersed poly(butylene terephthalate) on isothermal crystallization kinetics and morphology of poly(lactic acid) blends. POLYM ENG SCI 2015. [DOI: 10.1002/pen.24246] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Chavakorn Samthong
- Department of Chemical Engineering, Faculty of Engineering; Chulalongkorn University; Bangkok 10330 Thailand
| | - Chutimar Deetuam
- Department of Chemical Engineering, Faculty of Engineering; Chulalongkorn University; Bangkok 10330 Thailand
| | - Masayuki Yamaguchi
- School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
| | - Piyasan Praserthdam
- Department of Chemical Engineering, Faculty of Engineering; Chulalongkorn University; Bangkok 10330 Thailand
| | - Anongnat Somwangthanaroj
- Department of Chemical Engineering, Faculty of Engineering; Chulalongkorn University; Bangkok 10330 Thailand
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17
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Feldman D. Polyblend Nanocomposites. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2015. [DOI: 10.1080/10601325.2015.1050638] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Saeidlou S, Huneault MA, Li H, Park CB. Poly(lactic acid) stereocomplex formation: Application to PLA rheological property modification. J Appl Polym Sci 2014. [DOI: 10.1002/app.41073] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sajjad Saeidlou
- Department of Chemical and Biotechnological Engineering; Université de Sherbrooke; Sherbrooke Quebec J1K 2R1 Canada
| | - Michel A. Huneault
- Department of Chemical and Biotechnological Engineering; Université de Sherbrooke; Sherbrooke Quebec J1K 2R1 Canada
| | - Hongbo Li
- National Research Council of Canada; 75 de Mortagne Boucherville Quebec J4B 6Y4 Canada
| | - Chul B. Park
- Department of Mechanical and Industrial Engineering; University of Toronto; Toronto Ontario M5S 3G8 Canada
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