Crystallization Behavior of Poly(Tetramethylene Oxide) Influenced by the Crystallization Condition of Poly(Butylene Succinate) in Their Copolymers
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摘要
The effect of crystallization conditions of poly(butylene succinate)(PBS) component on the crystallization of poly(tetramethylene oxide)(PTMO) component in their segment block copolymer, with a higher PTMO content(PTMO mass fraction is 67%), was investigated by DSC and temperature-dependent FTIR. It is found that the isothermal crystallization time(tIC) of PBS has an effect on the crystallization behavior of PTMO component. Perturbation correlation move-window two-dimensional(PCMW2 D) correlation analysis and generalized 2 D correlation analysis(2 DIR) were performed to explore the origin of this phenomenon. The PCMW2 D and 2 DIR results show that the correlation intensity peak observed at around 20 ℃ for PTMO is due to the PTMO chains movements forced by the PBS chains folded movements. If tIC of PBS at temperature of 20 ℃ is prolonged, more PTMO components are incorporated in the region between PBS lamellae and the peak at-7.6 ℃(belonging to less-constricted PTMO chains) changes smaller and even disappears, while the peak at-16.3 ℃ belonging to more-constricted PTMO chains gets bigger. A crystallization model was also established in this study. The results of tensile testing showed that tensile strength slightly increased and elongation at break decreased with increasing heat treatment time at 40 ℃.
The effect of crystallization conditions of poly(butylene succinate)(PBS) component on the crystallization of poly(tetramethylene oxide)(PTMO) component in their segment block copolymer, with a higher PTMO content(PTMO mass fraction is 67%), was investigated by DSC and temperature-dependent FTIR. It is found that the isothermal crystallization time(tIC) of PBS has an effect on the crystallization behavior of PTMO component. Perturbation correlation move-window two-dimensional(PCMW2 D) correlation analysis and generalized 2 D correlation analysis(2 DIR) were performed to explore the origin of this phenomenon. The PCMW2 D and 2 DIR results show that the correlation intensity peak observed at around 20 ℃ for PTMO is due to the PTMO chains movements forced by the PBS chains folded movements. If tIC of PBS at temperature of 20 ℃ is prolonged, more PTMO components are incorporated in the region between PBS lamellae and the peak at-7.6 ℃(belonging to less-constricted PTMO chains) changes smaller and even disappears, while the peak at-16.3 ℃ belonging to more-constricted PTMO chains gets bigger. A crystallization model was also established in this study. The results of tensile testing showed that tensile strength slightly increased and elongation at break decreased with increasing heat treatment time at 40 ℃.
The effect of crystallization conditions of poly(butylene succinate)(PBS) component on the crystallization of poly(tetramethylene oxide)(PTMO) component in their segment block copolymer, with a higher PTMO content(PTMO mass fraction is 67%), was investigated by DSC and temperature-dependent FTIR. It is found that the isothermal crystallization time(tIC) of PBS has an effect on the crystallization behavior of PTMO component. Perturbation correlation move-window two-dimensional(PCMW2 D) correlation analysis and generalized 2 D correlation analysis(2 DIR) were performed to explore the origin of this phenomenon. The PCMW2 D and 2 DIR results show that the correlation intensity peak observed at around 20 ℃ for PTMO is due to the PTMO chains movements forced by the PBS chains folded movements. If tIC of PBS at temperature of 20 ℃ is prolonged, more PTMO components are incorporated in the region between PBS lamellae and the peak at-7.6 ℃(belonging to less-constricted PTMO chains) changes smaller and even disappears, while the peak at-16.3 ℃ belonging to more-constricted PTMO chains gets bigger. A crystallization model was also established in this study. The results of tensile testing showed that tensile strength slightly increased and elongation at break decreased with increasing heat treatment time at 40 ℃.
引文
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[25]Yu J,Wu PY,Crystallization Process of Poly(e-caprolactone)-Poly(ethylene oxide)-Poly(e-caprolactone)Investigated by Infrared and Two-Dimensional Infrared Correlation Spectroscopy[J].Polymer,2007,48(12):3 477-3 485
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[2]Pepic D,Nikolic MS,Djonlagic J.Synthesis and Characterization of Biodegradable Aliphatic Copolyesters with Poly(tetramethylene oxide)Soft Segments[J].J.Appl.Polym.Sci.,2008,106(3):1 777-1 786
[3]Nikolic MS,Poleti D,Djonlagic J.Synthesis and Characterization of Biodegradable Poly(butylene succinate-co-Butylene Fumarate)s[J].Eur.Polym.J.,2003;39(11):2 183-2 192
[4]Ihn KJ,Yoo ES,Im SS.Structure and Morphology of Poly(tetramethy-1ene succinate)[J].Macromolecules,1995,28:2 460-2 464
[5]Xu J,Guo BH.Poly(butylene succinate)and Its Copolymers:Research,Development and Industrialization[J].Biotechnol.J.,2010,5(5):1 149-1 163
[6]Gabri?lse W,Soliman M,Dijkstra K.Microstructure and Phase Behavior of Block Copoly(ether ester)Thermoplastic Elastomers[J].Macromolecules,2001,34(6):1 685-1 693
[7]Jovanovic D,Nikolic MS,Djonlagic J.Synthesis and Characterisation of Biodegradable Aliphatic Copolyesters with Hydrophilic Soft Segments[J].J.Serb.Chem.Soc.,2004,69(12):1 013-1 028
[8]Lee HS,Park HD,Cho CK.Domain and Segment Orientation Behavior of PBS-PTMG Segmented Block Copolymers[J].J.Appl.Polym.Sci.,2000,77(3):699-709
[9]Park YH,Cho CG.Synthesis and Characterization of Poly[(butylene succinate)-co-(butylene terephthalate)]-b-Poly(tetramethylene glycol)Segmented Block Copolymer[J].J.Appl.Polym.Sci.,2001,79:2 067-2 075
[10]Huang Y,Liu JH,Zhou T.Composition Dependence of the Thermal Behavior,Morphology and Properties of Biodegradable PBS/PTMOSegment Block Copolymer[J].Journal of Wuhan University of Technology-Materials Science Edition,2016,31(1):219-226
[11]Müller AJ,Balsamo V,Arnal ML.Nucleation and Crystallization in Diblock and Triblock Copolymers[J].Adv.Polym.Sci.,2005;190:1-63
[12]Shin D,Shin K,Aamer KA,et al.A Morphological Study of a Semicrystalline Poly(l-lactic acid-b-ethylene oxide-b-l-lactic acid)Triblock Copolymer[J].Macromolecules,2004,38(1):104-109
[13]Shiomi T,Imai K,Takenaka K,et al.Appearance of Double Spherulites like Concentric Circles for Poly(ε-caprolactone)-Block-Poly(ethylene glycol)-Block-Poly(ε-caprolactone)[J].Polymer,2001,42(7):3 233-3 239
[14]Albuerne J,Márquez L,Müller AJ,et al.Nucleation and Crystallization in Double Crystalline Poly(p-dioxanone)-b-Poly(ε-caprolactone)Diblock Copolymers[J].Macromolecules,2014,36(5):231
[15]Castillo RV,Muller AJ.Crystallization and Morphology of Biodegradable or Biostable Single and Double Crystalline Block Copolymers[J].Progress in Polymer Science,2009,34:516-560
[16]Castillo RV,Müller AJ,Raquez JM,et al.Crystallization Kinetics and Morphology of Biodegradable Double Crystalline PLLA-b-PCLBlock Copolymers[J].Macromolecules,2010,43:4 149-4 160
[17]Nojima S,Fukagawa Y,Ikeda H.Interactive Crystallization of a Strongly Segregated Double Crystalline Block Copolymer with Close Crystallizable Temperatures[J].Macromolecules,2009,42(24):9 515-9 522
[18]Castillo RV,Arnal ML,Muller AJ,et al.Fractionated Crystallization and Fractionated Melting of Confined PEO Microdomains in PB-bPEO and PE-b-PEO Diblock Copolymers[J].Macromolecules,2008,41(3):879-889
[19]Lin MC,Chen HL,Su WB,et al.Interactive Crystallization Kinetics in Double-Crystalline Block Copolymer[J].Macromolecules,2012,45(12):5 114-5 127
[20]Ghoroghchian PP,Li G,Levine DH,et al.Bioresorbable Vesicles Formed Through Spontaneous Self-assembly of Amphiphilic Poly(ethylene oxide)-block-Polycaprolactone[J].Macromolecules,2010,39(5):1 673-1 675
[21]He C,Sun JR,Zhao T,et al..Formation of a Unique Crystal Morphology for the Poly(ethylene glycol)-Poly(ε-caprolactone)Diblock Copolymer[J].Biomacromolecules,2006,7(1):252-258
[22]Takeshita H,Fukumoto K,Ohnishi T,et al..Formation of Lamellar Structure by Competition in Crystallization of both Components for Crystalline-Crystalline Block Copolymers[J].Polymer,2006,47(24):8 210-8 218
[23]Du ZX,Yang Y,Xu JT,et al.Synthesis and Characterization of Poly(?-caprolactone)-b-Poly(ethylene glycol)Block Copolymers Prepared by a Salicylaldimine-Aluminum Complex[J].Appl.Polym.Sci.,2007,104:2 986
[24]He C,Sun JR,Ma J,et al.Composition Dependence of the Crystallization Behavior and Morphology of the Poly(ethylene oxide)-Poly(epsilon-caprolactone)Diblock Copolymer[J].Macromolecules,2006,7(12):3 482-3 489
[25]Yu J,Wu PY,Crystallization Process of Poly(e-caprolactone)-Poly(ethylene oxide)-Poly(e-caprolactone)Investigated by Infrared and Two-Dimensional Infrared Correlation Spectroscopy[J].Polymer,2007,48(12):3 477-3 485
[26]Noda I.Generalized Two-Dimensional Correlation Method Applicable to Infrared,Raman,and other Types of Spectroscopy[J].Appl.Spectrosc.,1993,47(9):1 329-1 336
[27]Noda I,Dowrey AE,Marcott C.Recent Developments in Two-Dimensional Infrared(2D IR)Correlation Spectroscopy[J].Appl.Spectrosc.,1993,47(9):1 317-1 323
[28]Zhou T,Zhang AM,Zhao CS,et al.Molecular Chain Movements and Transitions of SEBS above Room Temperature Studied by Moving-Window Two-Dimensional Correlation Infrared Spectroscopy[J].Macromolecules,2007,40(25):9 009-9 017
[29]Zhou T,Wu ZY,Li YY,et al.Order-Order,Lattice Disordering,and Order-Disorder Transition in SEBS Studied by Two-dimensional Correlation Infrared Spectroscopy[J].Polymer,2010,51:4 249-4 258
[30]He Y,Zhu B,Kai W,et al.Nanoscale-Confined and Fractional Crystallization of Poly(ethylene oxide)in the Interlamellar Region of Poly(butylene succinate)[J].Macromolecules,2004,37:3 337-3 345
[31]He Y,Zhu B,Kai W,et al.Effects of Crystallization Condition of Poly(butylene succinate)Component on the Crystallization of Poly(ethylene oxide)Component in Their Miscible Blends[J].Macromolecules,2004,37:8 050-8 056